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Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these...

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74. Nubeena Mine • ... The wor't.:l:1nC;B of the Nubeena Mine are located on Hubeena, Hill a 11 t·tle lamJ C;ha.n L-mile east... north-east from t s Mine, rmd are ren-ohed bjr a. br::mch li.ne from the Grubb's tram. Accordin(,;, to Dl1.asett (1962) the hOB t rocJrs a.re ttf'olde<l and distu.rbed shale t slate and pale grey e!lccharoid.al qua:r-t- si te \<v1110h a.re part of the Oonah Quartz! te anO Sln:l:ic tl Descrir:rtions of the have boen inclu(lEHl in Montgomery (1893), \'JaIler (1904) and Twelvetrees and Ward (1910)j1 A total of :five lodes were recognized, viz. No 1, Hubeena, Jaeger's, Barnett's, and· I;lewel11n's, hut Lode and No. f Lode wero api:<1rent1.;/ of 1 i "t-tle importance. The Nubeena 1,o(le was, 11Cco!'(ling to rJ:'welvetrees and 'Nrlrd t IJmall but high in si:1rer conterrt. 1:he minera11zo;tton was repor';oc1 to com'diDt of clean go..lena asonytng 78% lend and 950zs. of silver per ton. H rnett' f.J IJode WfHj desoribe!l by 'rwelvetreos nnll V/o.rd as a. lode, and the) folloWing a "::ays ,"Ierc too bo lnclica,t:lv0 0'-' tho average vnlu.e of tihe ore sold.• Ag (ass. Del' ton) 1. 59.00 38.00 2. 60.00 40.00 3. 61,,50 42.85 4. 56.50 37.30 f1 Llewellin's IJode was a oscrj. bed by';nl: er [;\s a very large loo·se f'tsou.re-forrnation" with up 1:;0 four feet of so11.d galena. T'\(1 width of 10,1',19 lodt1 rJP:p' vartod concdderably. No assay fi i f1,'Ures are ava.iloble for 01'0 IJlevJollin f s lo(]e.
Transcript
Page 1: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

74 Nubeena Mine bull

The wortl1nCB of the Nubeena Mine are located on Hubeena

Hill a 11tmiddottle lamJ Chan L-mile eastnorth-east from (~rubb t s

Mine rmd are ren-ohed bjr a brmch line from the Grubbs tram

Accordin( to Dl1asett (1962) the hOB t rocJrs are ttfoldeltl

and disturbed shale t slate and pale grey elccharoidal quar-tshy

site ltv1110h are part of the Oonah Quartzte anO Slnlic tl bull

Descrirrtions of the worl~ings have boen inclu(lEHl in

Montgomery (1893) JaIler (1904) and Twelvetrees and Ward

(1910)j1 A total of five lodes were recognized viz No 1

Hubeena Jaegers Barnetts andmiddot Ilewel11ns hut JHegE~rmiddota

Lode and No f Lode wero apilt1rent1 of 1i t-tle importance

The Nubeena 1o(le was 11Cco(ling to rJwelvetrees and Nrlrd t IJmall

but high in si1rer conterrt 1he minera11zotton was reporoc1

to comdiDt of clean golena asonytng 78 lend and 950zs of

silver per ton H rnett fJ IJode WfHj desoribel by rwelvetreos

nnll Vord as a pyrltic~fl1enn lode and the) folloWing a ays

Ierc r()por~e1 too bo lnclicatlv0 0- tho average vnlue of tihe

ore soldbull

Pb(~) Ag (ass Del ton)

1 5900 3800 2 6000 4000 3 6150 4285 4 5650 3730

f1Llewellins IJode was a oscrjbed bynl er [s a very

large loomiddotse ftsoure-forrnation with up 10 four feet of so11d

galena T(1 width of 10119 lodt1 rJPp rcn~ly vartod concdderably

No assay fi if1Ures are availoble for 010 frop~ IJlevJollin f s lo(]e

75 r~iner~tltzot) f1~middottGril is not abund=Jl1t in the lt1tUps HToUnd

t e workingE of the Nubeena f1ins but lC snpl(l col1ecteCl

nrerG10rnl1y in keeptng witjl1 the dEH~cr1ptlono of a1 er( 1904

Gnd rwelvetre(~s aucl0rd (1910) The main metallic connshy

tmiddotituPo t of f (~middotmiddot)r1tmiddot10(omiddot_~ t ~ t)Ilaryl_iLnor 1401~_t OC~1C~fI LJ I (1 lrngue~d1 VI LI l~ h3 J t Jr lamp cCb

of eiderite lturtz cmd Dhle Small petches of Ilyr1 ~e are

t~lso vlBihle in htlml apecimen while boulnneerite bournonito

tetrl1hedrito sjhc11erite aIHerlOpyrite 1Imrcaf-dte Psrarpyri te

GUlI~ gold were ohervec1 in polished sections

The atu71plof1 exrun1nml Dhow n close res(0mbLlnc~e to the

galena-rich mnterinl from Gruhbs Mine

The ampnlena corrtains abundlJnt 1nclusion~j of boulnnW~3J11e

Vihich vnry conEi(1erably i fJhnpe Hn(~ t~ize nlO most (ormQon

form io a blde-1He shape ranging from OQ02mEl up to 005mm

tn len~th but other shaper observed arc rounrl Qvnte and

trreGulor The totel size rnnee o~thc hODlang f rite bodies

io from 0 001mn for thO small rOUl11 scctionD upto 003rnrn

for the largest of t~l(~ irreeulorly ~h(Ie( bodiGEJ Some of

th8 olonatc bocl 1os fJho~ nn nlignmen l~ lone crysinllornphic

plnnea in the calena

Dmlrnoni to occurs 08 occa~lon81 8rJnJl (O02mm) round

lllcluoionn d t1dn the) gnleml hut ls mOIE) common no 01010 up

to 1mm in overoll wi(lth (P 341) These t=lrens occur vi thin

tl1 ~ 1Ylmiddotlt)-d ~13L v t~ 001non - 1~1(I tllO l)ournoni+cmiddott -1middottJ t tbuttl ~ r~ ~ U flcmiddot0ntly1_ nolJ tJ

olwy te r middot1rn 1 -tyom th rQl-nl by ~ nnro (0 OOtifl1 to( 10 iO1 t iJ- 1~ ( J~i 1 _ t ~(~ vmiddot ~ C(~ - J_ if bull r li ~

O01mrn) rim of boult1n~oritj(l whioh ourrl)unds th~ bournon1te

Incluf3iom~ of galena boulnnrcrite no1 -tetr~)ie(lr1 to are

76

present vd thin -these bournoni to areas

rratraheclrite Hlso occurs as occaelon~tl lnelJsjons with-

in the galena but the distribution is rather sporadic

ThefH1 inclusions are more common in r339 thfln in other

sections the maxtmum si2e ObiJerved betng O)mm x O1mm

Th(~ majority of the 1etrahedrite bodies aIE~ within the size

rHnge O02mrn to O06ni anll the ~JhGr)e ia gcnerally irregular

Occasional composj te bcmlnngeri te - ietrahedrl te tnclus1ons

are also preuent~ wj thin the galena_ Pyrargyri e occurs in

the gr~lena 1tIS rare frn]~tll incluBions (O01mm to O035rnm)

~xpproxtmately ovate in shape (P339 340) Composite

boulangerite - pyrar~yrie 1neludcm~ vdthin lh( galena were

also noted

1yrite is dtssemtrHltted 1hroughou1 the gangue alj floe

idiomori~hic and m1bicUomOThic crystalG but shows as Varishy

ahle dist1tbution in thegalenJ Pyri te 18 common within

the galena in P338 and 341 but io not common in the olhE~r

sectiOYlH In P338 and 341 t~le pyr5te forum pnfiches up to

sever~~J_ nil1irl1etres in overall width Hnd shows cvL] ()flCe of

iKtrtatci1 repltC~~ment by galena Prri to occurs ion P bull 339 and

340 as only EHIlal1Jncl1H3OUH in the gfllenn and h)~lS appaTcJntly

been ewtoneively re)laee(l hythe galena

ArfJenopyri+o fOtpound clusters of small ldiomorphic

crystahi O02mm to O05mrl1 vdthin the f~(tlena and ttH quartz

Mnrcnsi t(~ is no common but ooca~ onal tnclulons up to

OOlrnm Iere noted Nimiddotthln galena in 2338 ltJmd 340 B(rth the

arselloprri te and t~lc~mlt~rCilsite appeflr to h~tve ufl(hJgone

77

partial repaeement by the galena

S])hal~ri0 10 j)IEH3euron1t in hene smnplen (un only a minor

constituent and OCCUrIJ8S small incluDionu Jlth1nt [J10

apIiarently extfiivoly rellacefl by golonn Some of thoEle

sphelerito bol1os contain minute axsolution blabs of chnlshy

copyrite ~ ~Jn1 a noticoable feJtiure 01 the~3e Is tIll zonal

relatiorlsbi with re~3pe(~t to the uhujG ofthe sph~~lerie

body l~hese ip~l~lorito bodieH ithin the alena are often

rov~hly oV8te am~ rn-rely have a maximvm dimension grelter

-than 0 1n11I1

Hare fine (0 01r1m) paricleo of old were noted w1 th5n

middotPl ~ 1 2 ceop ampr -he smiddotmiddotmiddotmiddot I b ~ n f 1middotmiddotmiddot0 middot11 (p 338 340)u llt o~~- ~t~ tjt~If)V J~ ~Aj t t3 1 _~~ _ 1 middotu- ~ ) ~

J7

lmiddotmiddot~o-Jq~td) Cv~91 ~~ __

04It-JILl

0middotmiddotv iAl~ 1 ~H IJ~~~111I F bull I

eon10n~ Dou [iInpor1 tiC - emiddot~Jonc1 1111 ~l ob ~ u~~ ~~( tjt~lri- ~J

Uournoni 0 - nnJena

1 nfr(VpHmt rSH~olW11 to- hOtlY It1(or-j ~e - middot1 (y111 lt~~o~~1r~ i + f 1(middotmiddot~- ~ ~) iJ ~i ftJ l~~ lt r

middotI~)middotl-in~middotmiddot ~ ~ _ 1()lP1f~ j~1gta~ 1 )_bull L _(~ij ~ iQ o~ f_Jrt ~ ~

rtoul~)n erie - r)ournon1te -nJnn middotllQ~)lnnfnito - f~l((~ - to middotrnl~odr~I to no~llongertte - P) r~te

Hournoni fe - EwrJ to Jknlrnrm1 o -ratrn~1(i1rto

Cho10oi)ymiddotrit-f) - fF~~~nl~rmiddotte bull f J ~ 1 shy ~vmiddot

G lcna - mnrCt~~1tte

(~~iLontl - r T1in~ cri to I nl~nltI f )1 t 4 I + ~lt~ 0 1~ ~Lr-r~ j - 91tOiJ ~JJJA lIJt Vl ~_ Imiddot_~J ~~J J~ IJ1iJ

(kl1~na - t(ftrc~lndJt 0 ry1t 0 - fJph0~crte

11101 n~)ln~~nrdtm - r~pr~ ~lo cJ J 0 __ bully

~_ ~~ 1(n I r~ r ) J~ ~l r~~l1 t~ bull - rru(~yrj te

79

Houth Nueena ronpect lltO

rrhe 1Norlclngn kn(Jwn os the South NVbeena Prospect are

~~~ 1middotmiddotmiddot(1 rox4 rn1 Cll J~ rn- J It bull ou+1 of -ll( 11ut)eeYl- JUfilJ t ~dJ(rUO t-tlj J _ - rt~~ lt 1) 1-- J _~O ~ ~J L Ut 3 rclJ d 11

Ill) rkt ngs

1 urrtF b c eVlint-1on 1 C1ilri -iJ i-- ( lclo1) 1 middot~middot~101middottIJ1middot~v ~ v t5 r l0 4 ~ ) t C t _~

(f Tlo14nsbullbullbull A t middot J olt~ la~I C (I COVr(0 ~~ lFnonltloi1~amp rL lJ -le in tIOmiddotKmiddotmiddotIUmiddotSI - (~)0~ - (1 t L) ~ I

middotnmiddotfmiddotlr~t Q 1n1nnel ( ~ _v ) 10 (J4middot ~lvemiddottmiddotmiddotoe1- rl~~~-(1 middotqmiddotmiddot1 1910) bull_ 0 1 (t~11r JtJ t1 bull _ bullbull t~~) _

Tho lodc~ cont~1in(~(1 a BElFtm of galeml from one to two inched

in thic1mes8 8oood1oC to iJaIler nnd assu7S 0 tbEl galemshy

middotvcgt ~middotltmiddotmiddot~lto If 7v emiddotn (l -(j 1(00 ~ver per middottonts v 11 c ~Ow l _ vv J tlLmiddot J 4JO ~ ~l f No rninernlized material is now prEwent in tho dumps

ne8Itlw worldns

80

Colonel north Minos I _ iiIl i bull bull

11 1 tmiddot I (gt- ~11 1 1 ~ b ~middotiir 0Ibull ~ lt Cf 0 viean ullC Ujjray ne nt vlO uU OU) 11 n

incluc1es nuruorou8 rWJDll vorkinCG which wore on 10[1800 hold

a~~ varieruJ times 1Jy te Colonel North TlneCl nwl Itilway

Co bull N J and nre norr1nJl~r reftirre(~ to a8 tho Colonel North

j1lnes These worln[~G in~lud( the Colonel North hnft the

Vtctorltl - ZeohcH1 hnfmiddott the Silver POWTI lt1l1it the Silver

Lnc ~r1middotitmiddot ~ntl tmiddotmiddotc t1lvI Vjvo ~rorltinc TlIO (1 b~middotmiddotSmiddotlrina ) u 11 bullmiddot ~ l bull -_ ___ v Ci (tt V H lo-J 1- 7Jo A kJ Q furtIer BOUt waG -Iso operated by hiB Company aml I[U3 rcshy

farred to in some ropor0s ~JD th~ Colonel North rfine

Bljssott (1962) has r1escribod ~h0 country ro~ks in the

Colonel North iaren a~l IIfolltled nnd 4io urbcc1 ohnle ilate and

nn] e 11l-rt7ite rl (1 onn Kh~ ch ~e et 0(gt 1- ( () 011 gt n Ttff~- -4- JJ 1 iJI middot~otJ ( I~L ~~ (~ ~J~middot-1~ )_ lJi~ ~~ fjCil~ lft

z1t 0 lt1l1(1 SIft1gt0 bull

The mineralogy of th( ore found in tIJo v~~riOuH worlrin(o

nppe1ro to have been mVJOnt1r111y uniform 1)escription8 by

m~lemiddotlv~middotlmiddot1el~u ~ rd Fnll~a (19middotmiddot10) inaiU - 1-1+c~(b Cltgtlrgtn~wnl--t- C~IV 0J) C LA middot 1gt(1 thi~ ~IJIIj

matn rletallic rn1n rrDl vllth EJr1811 amounts ofyri e sphalshy

orj(e Gnd an at1t5mony-bear1ngr~tntn~al (probably boulangerito)

in a gangue of qtlart~ nnd s1Grite The minoralization was

pDtob anltl of low Brad e overall

The Chlori1e TJodo in ~he north-eoJJt 1)[11( of the Colonel

North area was described by Twclvet1oEH1 ml rrnId ne c8rrying

bands and noduleo of hematite and memillnry I1monita the

nodules containing Dil1er chlorl(1e nncl native silver Some

high gr(l e pat(hes nosyed as hi-gh as 1000 OZB oilver per

81

ton but the average ~Jilver content of the materinl exshy

tracterl was 40 ozs silver per ton

Dumps in the vicinl tV of the vsrioufl Nokingr~ have

been eXHmined for samples afore but most contain only traces

of galena ill ahnle qiL1irtz and siieri tee Jhe only useful

mateltl~ifll for miner1l1ogical examtnation W8S founfJ in the

dumps of ~J01rle sffi1ill workings in what TJolvetreer rnd lacd

(1910 p_118) lleserib(d IMl thH fUrra-may Formr1tion u bull rfhese

workingg arlt~ in tha southern pHrt of the Colonel North area

Hnd Bre situated close to thE Grubb t El tram Twelvetrees and

Viard sta ted that tho vein of ore was about 18 inches in

W-rlth d middot t~at middotmiddotl1middotltnl~it C aomV1~V 1middot1middot1 ~Iith r-JJ-lbullLII J~ t (~~lt Jt JgtJi(~ ~i v VOv af-oltllt ~-dl-iJl~l ~ v E~~T~ 1lJ4t

occurri tl onl~ in spots lrde dCGer pt100 is in accon~~1nce with the samples collected In addition to ephalerite and

galena minor amourrts of boulangeri to tetrahedr1 te bourshy

nord te pyri to nnr1 egthJlcopjrri te were observed in p(11iD J ed

secmiddottionn of the poundpecimerm

1he g~11ena spotstt (P342 34)) are patches of galena

from 1mm up -to 25em in overall width in mas8l~le white

quertz Some ~lp0cimene of quartz are -the h1clred H or chopshy

d tl f) re+xr~ to by nr (J~ tt (11gt10 t - 1qJIg) r-o 11bull iJvmiddot LP tli ) t cmiddottmiddotrl p ~4 ~ +ne

north-etuJt of Taamnnia let ietd attrHmted the svrp angular

impreslJions tn the (lut3rtz to feldspar crystals but it 3IJJGars

l11oly that the im1ressions in this material fror the

Colonnl North 8ea have been CE1USG(1 hy Cl cryst~al1ine Cflfrbshy

onate ]rObtol1l1y sid eri ta which naB siu(~G bean leachefl Ollt

82

~flhe gelena i~3 ric) in inclusions of bou13n~erlte and

inclnsiollS ofte-trchedri te and bOUXtlOl1i te Elre rllao common

I1lC bonlaneri-te occurs as fine needle-l1ke bodies riwging

in length from OOf)2mrn up to O08mm Thena shmv an even

distribution through most of ihe gcllena but are occasionally

conoentratef~ inmiddotto erneI1 pfttches (up to O3mm in width) eonshy

slstillg of cllJBters ofthef-Je tine needles Tetrohedri to is

leGs evenly dist~rHUted and occurs as irregolarly shaped

bodje~3 ran~inf5 in overall w1dth from O01mrn to O075mrn

These t0trahedri te bodies always occur tn the alena but are

freiuently observHd on the borders of sphalerite inclusions

in the galena Bournoni te is present inmiddotthe palcf1m as very

fine bodies COITIWOn and evenly diatr111uted ioP 34 hut less

_ 343common Ifl 1~ bull PleCle bocH-ea clre getlerally roil-like or

round in Bhnpe gltlou~h it ia quj te lihely that many of the

rouni~ hodi(~s are merely eross-secmiddottions of rod-li1H2J bodies

Th 1 - lhrJ 0 tmiddot1Ilt1lt 11 vJr1 f 011 0 (10)1n t Omiddot ()15-m ndv vt~iU-- 1 tA Ij- LJ3 middot~O t4 ~ 1 bull tmiddotv v bull middotLmiddot9 ttmiddotmiddot

tho diameters of the round boriies rnge from O 001mm to

O005rm1 In 12342 SOftie of the bourmmite tnclttsions dnow

) M(lnl~ltmiddot j r middotmiddotymiddot~tnmiddott IF -lj 3J rn-tJ 1middot -Ftl lt~ en(~ ~~ ampi- ~ A - 17- 1_bull ~_ gt l~J ~ bull v tt J v P 1 v~t-l v JIJ (Jr ~~) ~ J Ql bull

Pyrtte is not common in the coarse gf~Jgteila where 11

occurs only ao vcry SIWJll1 (o 01ryn) idiornor(c cr~i8tals

which appear 1~o have hCEm eXtelh3i vely rejh)cel by the gn1ena

P~lrite is 8 lit~middottle morc common ln the sph11erite-rich ore

where it olcurs in tllC1 mCSrlive SphD lerl te as ldiomoIgthic

lYltmiddot1~ (0 Omiddot1rT t r Q O~~l) middot-amiddotr -tIn r 4middot Cl J 1y r )middotmiddotlmiddotcl by~ ~t~ (I)lJgt f~_1 gtt ~ 11 ~lJ1Jc~ llWtA J t-(ci 1-- ~j__ ~Cgtj~

83

the aphalerito

Sphelertte occurs tn tiQ coarse galena nD fJllall nref~S

wldc 1 appear to have boon ClXtOU i v(~ly rp1nced The 3120

of Chost) 1ufLntol1 rtr() y exceeds O1mn The cpecimens

Oof rlltHJve~ ~ln)J)e-vgt S~j P-lt 3444(~) CJ_ - 011110~- ~I ~~~~~~~J~ ~~ _ ) 0ouiflt ( ~ e~11rAly gtJ

of fl)llalelt gt 71th sID11 f3ffiOUn (~) ofu rtz gCH1gUG Jhe

E1p1l~lorj -to 11 modorately dxk tn hnnd BPOC1I1n

Minor nmount~J of Br-Ionl occur l OUg10Ut t1o spht~lertte

DS mloll 1rrcgvJr1rly 11)011 PflliChes t ntrell grenter than

C25mm in overclll width rrhbJ BlI a ap (~nrsto rOl)reemlt

Jncident Toacmnmiddotnt of 1ihe sphalerito

C1H1 COT7~ -j ] a] 0 ~lsrgtY1of- 11 )OJI1 ~middotlmiddotn-q 0-( ~he- JtJJ1u ~ lt) t-v middot l]U - (~-r h~ f I~ ~

SPHiJ erito ClS ex-tremely minute blobs moot of which (IO 10sa

than O0005mmOl in size am1 ~Jhow rnnclom oriontabion Some

minute bleba in thene nrE)rS may be pyrrhoti-be but the fine

naturo prevents procise idClTjfication

84

ASDCll1blape t

of ore bull

minerelsr

Common 13oulangClt-i0 - goJena Gona - sphnleri-te G~lena - tetrahoc1rj to Bournonie - galena Plri to - sjhalerlte

Infra l1ent Boulangeri te - bournonite - galena n01l1nnfJ~eite - gelona - sphalerite Boulangeritc - galena - tctrahedrito ChHlcoPJrrtte - sphnlerite Cklena - pyrito ~~lftn~ ~urit~middot A-~1D~i~middot~_~V_ c -shy JJ t~ - 0L~oC4-j~1 llo G-rltlema - f3pbi~l()ri to - tetrrec1rite

Uue BournoniLe - gDIena - spJolerite Galena -write - sp7Jn1erite - tetrahe(lri~E

f3S

Spray Mine

The rnaln worlring0 of the Spray [)iine are located on the

nor1l~ern slopes of Spray Hill south of manganese Hill and

on the southern side of the Comstock trern formation

The host rocks of the ore-bodies are quartzi toe ond

slflOB of the Oonahllartzite and Slate (BliElBstt 1962)

A(cording to WaIler (19(4) the Main Lode cont1nued north

and entered rocks which Bllssett (1962) oonsiderfJ to be

prohably pori oftihG Cambri9n Crimson Creek Formation

~111er oboe ved thot the lode was produotive onl in the

Jreoombrlan quartzite and sl0te as the workings in the

Carnbrian rockswere shallow nnlllhe ore completely oxidized

Detailed descriptions of the workings were given by

WaIler (19(14) and fiwelvetrels and Ward (1910) A total of

four ore-bodies were repormiddotted all of which were parnllel

strik ng NNW and steeply tlipfing The rost important lodes

ore No 1 (Main) ftnd No 3 (Gurnj_Els) Nos 2 nnd 4 were of

11ttle economic importance Valler describ(~d VIC lodcs as

well doff ned fismre formmiddotti one

The ore was reported 10 comliot of g81enand a leodshy

antiJrony SUlp11ide (re erred to as jarnesoni te) with pfrie

in a gangne of ioerimiddotto md quortz AccoTf1inglo WaIler one

of the richest ore shoots discovHred in the Zeehatl ltliatrict

oocurrsc1 in the l1inin Lode in Page and [loDermottts Jorkings

The ore in thiltl shoot renched a maximum width of 16 feet ana

the leJlgl~h of ~he shoot was reported to be 400 feet WalleI

86

esttmated DppIoxirrltrt l )ly two-tl-drde of ~Ilc~ ore to be galena

Ri~ports in1icate thaL the silver content of th ore

vlrjed connider~tblyhr()llghout the mine but =Lt woulcl apreac

from th~~ avatlllble fi lturea that tho average aUvcr con L(mt

of the ore Nas of the order of 100 ozeper ton TwelvetrHGc

and WeIrd nocl a cnrreltion between high BDver ana imtimony

content8 in the ore and Twelvetrees (1901a) refcrted that

some rich untimonhtl-leail ore neayed ov(~r ~) ODe) ozs of

silver ler ton in-ITer (op ci t) staterl thattho ntimony

content of ho ore WGf-J higher in upfer levels rtnc1 that

psrtte increq~ec1 in abUDrlmce at lOer levels

ThepreS6flce of small Cluntt tje~1 of argentitc flsfjociaterl

ttl _ 1 l~rjteI

CO-~ ~ revmiddotr~middotJ1J brt1Pemiddott+e~gtJ (1910) t-lmiddotJ~eClmnI) ~ imiddotr lmiddoto1 lmiddotJtt ~1Jmiddot ~l ~~O

(X235P52) tnlhe T(sm9nian Museum colloction confirms this

recurt This ~-)pecimen which Hl originc1lly in the W 1

Pettord col1ection contnins patches of rlrgcntite up to 3cm

x 2cm occurring ~lS thin films on ~ddlrt Ca 111088 of galena

covell~lte and lwrttC dt1iin lihe arge1titc flere noted in

polished section

Pett~erll (op cit p9 ) Chl0 recoriled the presence of

mltive antimony nil thin rillfJ~tjng patches about 811 inch

ln (Hameter irnplantec1 on H si l1Coovs matr-Ix tt T~jf) ikntt shy

fic~~ljon mal be ttnrl-iable as a sicoimcn from PettorO to col-

lectiton (now eclmen no Xf17 in -thCl lHDInnian V)USCWfi Col1ecshy

h nqt l n(lI 1 0 U ~ -ion)J lltbi1 rlt) J __ ~ J ~ IPJ11 -l4V(J 41~14monyVL Unmiddotmiddotmiddotbmiddotnnw t~~~Jbn9

1dmtified flO EJtHmite In Ihe abtHmce of any reports of

n bullJ v Q timiddoton1 dgtro 711 () rgtlfj bullbullf _ in +lC~I 14O~~J ~han bull no rnV(J

i

~~lj I~l )~ -1 bull 10l1 L tle~Jc ibull it

e lik-]middot lllt 1111 Cl-ITIOYl i ~ro ~t ( r poi cy fJ 1 - J IJdJP ~y t) no

87

Ietterd (opeit) also liste( small amounts of the secondary

minerals ke1mesi te and atjblconite in the Spray workingth

The gOS3ftfi outcrop of Gurniemiddot s Lode at trw tcrp of the

Spray Hill wao reported h~ ~rw)lvetrees and Nard (1910) to

be rich in naltive silver and silver chlor14n

Sr9cimens of ore in thc) tt1rlSmtln1anMuseum collectt on

fnd rtt9tertal collected from the tmrfaee dumps near the

lJorkj ngs were found to contain boulangerite galcma pyri te

and 9phalerite atl the-major metallic corJst1tttents in a

gIFtUg119 of aideri teurol Imd (lUJ)rtz Minor cOflsti tuents irlentified

in l)olisrH~dsectjonB were arsenopyrite tetlahedrl ta bourshy

nordta ehale~pyrite rnd pyrrl1oti ie T1H pIoportions of

the v~ril)lJs cOlUrtituents nhow 0 cOrlsideehle vUriation

between flpec1mens

Stil1wel1 (1947) (lesoribedsome npecimens from the

S~ray Mtue andtlHSlre i~J good agreement between Stil1well 8

deeeri pt1ons and the Beeimens exrunined in this investigation

All of the rninera1a and feaures de~lcrfbed by Stil1wel1 hOva

been observed and s(ma~ ~~dditiol1alminen~la (bournonlte and

pyrrhotite) have been noted Sphalerimiddotte is considerably

more aburldant in some of tihase specimenathan 1n tllOse

described by SIil1wel1

Boulan~erita wlieh istho most abundarrt ore rrdneral in

the sulle of opecif)en8 examined replesena t~je Inineral reshy

farred to Q8 jilmcsonite in many eerljer nccountg of the

geology d~ thn Zeehnn area Theproperties and identifictltion

ObL ~l ho~lQn()Iri~ ~~ lttT 11ltigt~crlj(bull Lsewneret ( PlO1011) orne~t L ( I ~~ S

88

specimens of ore (etg 1202) consist essentlally of rrtaseive

boulallgi~rite with minor aliOunts of tetrnhedrito gmlema

bournonitat pyrite RllG arsenopri to ~prescnt as inclu8l ona

INittdn th~~ boulangegtrite fIetraheltiri te is fl comrlOfl assooshy

late of the llOulan eri te in these specimens and in ono

sarrlple (1 50) constitutes apIuoximately 10 of the ore The

size of the tmlivilu81 areas of ter-rahedrite within the

boulangenite rftLngf from very Ftne up to O 25mrn 2l1f1 the

tlLxturul rc~lBiionahip suggGSts thst ie1rahedrite hrupound undeI shy

ponepartial replacement by boulrmgertte frhe fremiddot~uenoy of

middotthe fU38ernblJge bOl)I~ngerite-tetrnlHedrito io in Iteeplng Iidth

the ohservtation of tltel vetrees and Ward (1910) that h1gh

silver valuog were often related to hilth antimollY content

in ore from the SPlI~y iine

ECHJI~~lnged ta alf3o occurs throughout much 01 the 813erite

gengue SJJmiddot fine rod-li ke (md nasdle-11ke crys tal~ (eg P 181)

lt ~Wimiddottlt the longthe of ihe individual crystals rarely exceeding

O05mm fhese fin(~ cryfdals ar~ common in sm~111 clusters

lEUld velnleta and ()cctudcmally merge to form areas consi~3ting

of mFUfH~S of thfHH3 ftne ftroa~Jf and nnEHtl1es u (Plate ~59No 1)

fli(J vdltlth of the individual mamdve HreaEl reoches a mflximum

OT evE~ral centimetres (Si P 00)

GHlena is leSfl atl11ndantmiddot than boult3ngerite in tlH~se

spocimens and 2H rsrely observed lfUihout some aHwciated

k 1 J f 1 ( on 1(~)t )Ut)Vd angen e E~ argor CUeuroUJS 0 ga~3Fl e J J) ~re

up to sEnreral ce1ttmetres in overill l11i dth I~nd are surrounded

by gangnet nnd cont]in 1~j_ne inclusions of boulHngeri ta

- -------------------------------- ------

89shy

tetr51hedri te sphalerita pyrl te and arsenopyri te Grdena

~lao oonurs ~l8 freqlltmt fine (O01-007mm) 1ncluslons

of irregular outline within 1he maas1ve houlangeri tee

130urnoni te focrns sm11 irrerularly-shaped pt~tehm

within the massive boulangarite the overall width ()f these

inclnsions ranging from O025mrn ul) to O )rnm A small

amount of hournonite W~JS also observed as nstrrow veinlete

(oOOmm to O015mm jn v1dth) in Sl)hsJeri te and pyr1 te

(P 196) bull Cbaleopyri t( t tertrahe(1rite tmd galena are Jgtresent

pound$ inelusiona within the bournonite in these veinlemiddotts

Pllite and arsenopyri te are Invjuiahly associated hut

in VtiriOttS prop()rtions and occur as idiomorrhie and 6ubidshy

iomorphic crYHtala di flseminated through the other sLlphides

and tllr~ gnngtte Masavs areas up 10 several centimetres in

i1idth 8re alao resent (eg middotP H39 192) in ~ome speclmens

In tle[H~ l3reas pyri to is generally the lJl()re alnlndarrt of the

two rninerals but occasionally arEHt101)yrito ia the matn conshy

sti tuantThe in(1jviduol erystnlG of each mineral range from

O01rmn up to O 5r1l Both minereh1 have apparerltly undershy

one ext~cnsive replacement by boulatlgerite gaJsna tetrashy

hedrite nrdl bournQnite and partinl replacernent by sphaJerif(2)o

J3cmlarlgeri te temiddottrahettrimiddotte and gal~~na occupy trrtorsti tial

areas in the m~lSt3ive pyr1te and arsenopyrite liltla also occur

as fine inclusionn and veLnle~s withinthese minerals

middot~hltlari+ll Cl nblimiddotd middot in ~Omiddot1middotp -)ir1lt~nr1 (Q 1) 18middot 191)- i~L~gt ~ bull ~ v JJ c1 JL) c~tj J 71 (1 l-~~ ~v bullt~~t~ ~~)t t le

but is absent or rare in others In hand specimen te sJihalshy

arife ia moderately dark

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 2: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

75 r~iner~tltzot) f1~middottGril is not abund=Jl1t in the lt1tUps HToUnd

t e workingE of the Nubeena f1ins but lC snpl(l col1ecteCl

nrerG10rnl1y in keeptng witjl1 the dEH~cr1ptlono of a1 er( 1904

Gnd rwelvetre(~s aucl0rd (1910) The main metallic connshy

tmiddotituPo t of f (~middotmiddot)r1tmiddot10(omiddot_~ t ~ t)Ilaryl_iLnor 1401~_t OC~1C~fI LJ I (1 lrngue~d1 VI LI l~ h3 J t Jr lamp cCb

of eiderite lturtz cmd Dhle Small petches of Ilyr1 ~e are

t~lso vlBihle in htlml apecimen while boulnneerite bournonito

tetrl1hedrito sjhc11erite aIHerlOpyrite 1Imrcaf-dte Psrarpyri te

GUlI~ gold were ohervec1 in polished sections

The atu71plof1 exrun1nml Dhow n close res(0mbLlnc~e to the

galena-rich mnterinl from Gruhbs Mine

The ampnlena corrtains abundlJnt 1nclusion~j of boulnnW~3J11e

Vihich vnry conEi(1erably i fJhnpe Hn(~ t~ize nlO most (ormQon

form io a blde-1He shape ranging from OQ02mEl up to 005mm

tn len~th but other shaper observed arc rounrl Qvnte and

trreGulor The totel size rnnee o~thc hODlang f rite bodies

io from 0 001mn for thO small rOUl11 scctionD upto 003rnrn

for the largest of t~l(~ irreeulorly ~h(Ie( bodiGEJ Some of

th8 olonatc bocl 1os fJho~ nn nlignmen l~ lone crysinllornphic

plnnea in the calena

Dmlrnoni to occurs 08 occa~lon81 8rJnJl (O02mm) round

lllcluoionn d t1dn the) gnleml hut ls mOIE) common no 01010 up

to 1mm in overoll wi(lth (P 341) These t=lrens occur vi thin

tl1 ~ 1Ylmiddotlt)-d ~13L v t~ 001non - 1~1(I tllO l)ournoni+cmiddott -1middottJ t tbuttl ~ r~ ~ U flcmiddot0ntly1_ nolJ tJ

olwy te r middot1rn 1 -tyom th rQl-nl by ~ nnro (0 OOtifl1 to( 10 iO1 t iJ- 1~ ( J~i 1 _ t ~(~ vmiddot ~ C(~ - J_ if bull r li ~

O01mrn) rim of boult1n~oritj(l whioh ourrl)unds th~ bournon1te

Incluf3iom~ of galena boulnnrcrite no1 -tetr~)ie(lr1 to are

76

present vd thin -these bournoni to areas

rratraheclrite Hlso occurs as occaelon~tl lnelJsjons with-

in the galena but the distribution is rather sporadic

ThefH1 inclusions are more common in r339 thfln in other

sections the maxtmum si2e ObiJerved betng O)mm x O1mm

Th(~ majority of the 1etrahedrite bodies aIE~ within the size

rHnge O02mrn to O06ni anll the ~JhGr)e ia gcnerally irregular

Occasional composj te bcmlnngeri te - ietrahedrl te tnclus1ons

are also preuent~ wj thin the galena_ Pyrargyri e occurs in

the gr~lena 1tIS rare frn]~tll incluBions (O01mm to O035rnm)

~xpproxtmately ovate in shape (P339 340) Composite

boulangerite - pyrar~yrie 1neludcm~ vdthin lh( galena were

also noted

1yrite is dtssemtrHltted 1hroughou1 the gangue alj floe

idiomori~hic and m1bicUomOThic crystalG but shows as Varishy

ahle dist1tbution in thegalenJ Pyri te 18 common within

the galena in P338 and 341 but io not common in the olhE~r

sectiOYlH In P338 and 341 t~le pyr5te forum pnfiches up to

sever~~J_ nil1irl1etres in overall width Hnd shows cvL] ()flCe of

iKtrtatci1 repltC~~ment by galena Prri to occurs ion P bull 339 and

340 as only EHIlal1Jncl1H3OUH in the gfllenn and h)~lS appaTcJntly

been ewtoneively re)laee(l hythe galena

ArfJenopyri+o fOtpound clusters of small ldiomorphic

crystahi O02mm to O05mrl1 vdthin the f~(tlena and ttH quartz

Mnrcnsi t(~ is no common but ooca~ onal tnclulons up to

OOlrnm Iere noted Nimiddotthln galena in 2338 ltJmd 340 B(rth the

arselloprri te and t~lc~mlt~rCilsite appeflr to h~tve ufl(hJgone

77

partial repaeement by the galena

S])hal~ri0 10 j)IEH3euron1t in hene smnplen (un only a minor

constituent and OCCUrIJ8S small incluDionu Jlth1nt [J10

apIiarently extfiivoly rellacefl by golonn Some of thoEle

sphelerito bol1os contain minute axsolution blabs of chnlshy

copyrite ~ ~Jn1 a noticoable feJtiure 01 the~3e Is tIll zonal

relatiorlsbi with re~3pe(~t to the uhujG ofthe sph~~lerie

body l~hese ip~l~lorito bodieH ithin the alena are often

rov~hly oV8te am~ rn-rely have a maximvm dimension grelter

-than 0 1n11I1

Hare fine (0 01r1m) paricleo of old were noted w1 th5n

middotPl ~ 1 2 ceop ampr -he smiddotmiddotmiddotmiddot I b ~ n f 1middotmiddotmiddot0 middot11 (p 338 340)u llt o~~- ~t~ tjt~If)V J~ ~Aj t t3 1 _~~ _ 1 middotu- ~ ) ~

J7

lmiddotmiddot~o-Jq~td) Cv~91 ~~ __

04It-JILl

0middotmiddotv iAl~ 1 ~H IJ~~~111I F bull I

eon10n~ Dou [iInpor1 tiC - emiddot~Jonc1 1111 ~l ob ~ u~~ ~~( tjt~lri- ~J

Uournoni 0 - nnJena

1 nfr(VpHmt rSH~olW11 to- hOtlY It1(or-j ~e - middot1 (y111 lt~~o~~1r~ i + f 1(middotmiddot~- ~ ~) iJ ~i ftJ l~~ lt r

middotI~)middotl-in~middotmiddot ~ ~ _ 1()lP1f~ j~1gta~ 1 )_bull L _(~ij ~ iQ o~ f_Jrt ~ ~

rtoul~)n erie - r)ournon1te -nJnn middotllQ~)lnnfnito - f~l((~ - to middotrnl~odr~I to no~llongertte - P) r~te

Hournoni fe - EwrJ to Jknlrnrm1 o -ratrn~1(i1rto

Cho10oi)ymiddotrit-f) - fF~~~nl~rmiddotte bull f J ~ 1 shy ~vmiddot

G lcna - mnrCt~~1tte

(~~iLontl - r T1in~ cri to I nl~nltI f )1 t 4 I + ~lt~ 0 1~ ~Lr-r~ j - 91tOiJ ~JJJA lIJt Vl ~_ Imiddot_~J ~~J J~ IJ1iJ

(kl1~na - t(ftrc~lndJt 0 ry1t 0 - fJph0~crte

11101 n~)ln~~nrdtm - r~pr~ ~lo cJ J 0 __ bully

~_ ~~ 1(n I r~ r ) J~ ~l r~~l1 t~ bull - rru(~yrj te

79

Houth Nueena ronpect lltO

rrhe 1Norlclngn kn(Jwn os the South NVbeena Prospect are

~~~ 1middotmiddotmiddot(1 rox4 rn1 Cll J~ rn- J It bull ou+1 of -ll( 11ut)eeYl- JUfilJ t ~dJ(rUO t-tlj J _ - rt~~ lt 1) 1-- J _~O ~ ~J L Ut 3 rclJ d 11

Ill) rkt ngs

1 urrtF b c eVlint-1on 1 C1ilri -iJ i-- ( lclo1) 1 middot~middot~101middottIJ1middot~v ~ v t5 r l0 4 ~ ) t C t _~

(f Tlo14nsbullbullbull A t middot J olt~ la~I C (I COVr(0 ~~ lFnonltloi1~amp rL lJ -le in tIOmiddotKmiddotmiddotIUmiddotSI - (~)0~ - (1 t L) ~ I

middotnmiddotfmiddotlr~t Q 1n1nnel ( ~ _v ) 10 (J4middot ~lvemiddottmiddotmiddotoe1- rl~~~-(1 middotqmiddotmiddot1 1910) bull_ 0 1 (t~11r JtJ t1 bull _ bullbull t~~) _

Tho lodc~ cont~1in(~(1 a BElFtm of galeml from one to two inched

in thic1mes8 8oood1oC to iJaIler nnd assu7S 0 tbEl galemshy

middotvcgt ~middotltmiddotmiddot~lto If 7v emiddotn (l -(j 1(00 ~ver per middottonts v 11 c ~Ow l _ vv J tlLmiddot J 4JO ~ ~l f No rninernlized material is now prEwent in tho dumps

ne8Itlw worldns

80

Colonel north Minos I _ iiIl i bull bull

11 1 tmiddot I (gt- ~11 1 1 ~ b ~middotiir 0Ibull ~ lt Cf 0 viean ullC Ujjray ne nt vlO uU OU) 11 n

incluc1es nuruorou8 rWJDll vorkinCG which wore on 10[1800 hold

a~~ varieruJ times 1Jy te Colonel North TlneCl nwl Itilway

Co bull N J and nre norr1nJl~r reftirre(~ to a8 tho Colonel North

j1lnes These worln[~G in~lud( the Colonel North hnft the

Vtctorltl - ZeohcH1 hnfmiddott the Silver POWTI lt1l1it the Silver

Lnc ~r1middotitmiddot ~ntl tmiddotmiddotc t1lvI Vjvo ~rorltinc TlIO (1 b~middotmiddotSmiddotlrina ) u 11 bullmiddot ~ l bull -_ ___ v Ci (tt V H lo-J 1- 7Jo A kJ Q furtIer BOUt waG -Iso operated by hiB Company aml I[U3 rcshy

farred to in some ropor0s ~JD th~ Colonel North rfine

Bljssott (1962) has r1escribod ~h0 country ro~ks in the

Colonel North iaren a~l IIfolltled nnd 4io urbcc1 ohnle ilate and

nn] e 11l-rt7ite rl (1 onn Kh~ ch ~e et 0(gt 1- ( () 011 gt n Ttff~- -4- JJ 1 iJI middot~otJ ( I~L ~~ (~ ~J~middot-1~ )_ lJi~ ~~ fjCil~ lft

z1t 0 lt1l1(1 SIft1gt0 bull

The mineralogy of th( ore found in tIJo v~~riOuH worlrin(o

nppe1ro to have been mVJOnt1r111y uniform 1)escription8 by

m~lemiddotlv~middotlmiddot1el~u ~ rd Fnll~a (19middotmiddot10) inaiU - 1-1+c~(b Cltgtlrgtn~wnl--t- C~IV 0J) C LA middot 1gt(1 thi~ ~IJIIj

matn rletallic rn1n rrDl vllth EJr1811 amounts ofyri e sphalshy

orj(e Gnd an at1t5mony-bear1ngr~tntn~al (probably boulangerito)

in a gangue of qtlart~ nnd s1Grite The minoralization was

pDtob anltl of low Brad e overall

The Chlori1e TJodo in ~he north-eoJJt 1)[11( of the Colonel

North area was described by Twclvet1oEH1 ml rrnId ne c8rrying

bands and noduleo of hematite and memillnry I1monita the

nodules containing Dil1er chlorl(1e nncl native silver Some

high gr(l e pat(hes nosyed as hi-gh as 1000 OZB oilver per

81

ton but the average ~Jilver content of the materinl exshy

tracterl was 40 ozs silver per ton

Dumps in the vicinl tV of the vsrioufl Nokingr~ have

been eXHmined for samples afore but most contain only traces

of galena ill ahnle qiL1irtz and siieri tee Jhe only useful

mateltl~ifll for miner1l1ogical examtnation W8S founfJ in the

dumps of ~J01rle sffi1ill workings in what TJolvetreer rnd lacd

(1910 p_118) lleserib(d IMl thH fUrra-may Formr1tion u bull rfhese

workingg arlt~ in tha southern pHrt of the Colonel North area

Hnd Bre situated close to thE Grubb t El tram Twelvetrees and

Viard sta ted that tho vein of ore was about 18 inches in

W-rlth d middot t~at middotmiddotl1middotltnl~it C aomV1~V 1middot1middot1 ~Iith r-JJ-lbullLII J~ t (~~lt Jt JgtJi(~ ~i v VOv af-oltllt ~-dl-iJl~l ~ v E~~T~ 1lJ4t

occurri tl onl~ in spots lrde dCGer pt100 is in accon~~1nce with the samples collected In addition to ephalerite and

galena minor amourrts of boulangeri to tetrahedr1 te bourshy

nord te pyri to nnr1 egthJlcopjrri te were observed in p(11iD J ed

secmiddottionn of the poundpecimerm

1he g~11ena spotstt (P342 34)) are patches of galena

from 1mm up -to 25em in overall width in mas8l~le white

quertz Some ~lp0cimene of quartz are -the h1clred H or chopshy

d tl f) re+xr~ to by nr (J~ tt (11gt10 t - 1qJIg) r-o 11bull iJvmiddot LP tli ) t cmiddottmiddotrl p ~4 ~ +ne

north-etuJt of Taamnnia let ietd attrHmted the svrp angular

impreslJions tn the (lut3rtz to feldspar crystals but it 3IJJGars

l11oly that the im1ressions in this material fror the

Colonnl North 8ea have been CE1USG(1 hy Cl cryst~al1ine Cflfrbshy

onate ]rObtol1l1y sid eri ta which naB siu(~G bean leachefl Ollt

82

~flhe gelena i~3 ric) in inclusions of bou13n~erlte and

inclnsiollS ofte-trchedri te and bOUXtlOl1i te Elre rllao common

I1lC bonlaneri-te occurs as fine needle-l1ke bodies riwging

in length from OOf)2mrn up to O08mm Thena shmv an even

distribution through most of ihe gcllena but are occasionally

conoentratef~ inmiddotto erneI1 pfttches (up to O3mm in width) eonshy

slstillg of cllJBters ofthef-Je tine needles Tetrohedri to is

leGs evenly dist~rHUted and occurs as irregolarly shaped

bodje~3 ran~inf5 in overall w1dth from O01mrn to O075mrn

These t0trahedri te bodies always occur tn the alena but are

freiuently observHd on the borders of sphalerite inclusions

in the galena Bournoni te is present inmiddotthe palcf1m as very

fine bodies COITIWOn and evenly diatr111uted ioP 34 hut less

_ 343common Ifl 1~ bull PleCle bocH-ea clre getlerally roil-like or

round in Bhnpe gltlou~h it ia quj te lihely that many of the

rouni~ hodi(~s are merely eross-secmiddottions of rod-li1H2J bodies

Th 1 - lhrJ 0 tmiddot1Ilt1lt 11 vJr1 f 011 0 (10)1n t Omiddot ()15-m ndv vt~iU-- 1 tA Ij- LJ3 middot~O t4 ~ 1 bull tmiddotv v bull middotLmiddot9 ttmiddotmiddot

tho diameters of the round boriies rnge from O 001mm to

O005rm1 In 12342 SOftie of the bourmmite tnclttsions dnow

) M(lnl~ltmiddot j r middotmiddotymiddot~tnmiddott IF -lj 3J rn-tJ 1middot -Ftl lt~ en(~ ~~ ampi- ~ A - 17- 1_bull ~_ gt l~J ~ bull v tt J v P 1 v~t-l v JIJ (Jr ~~) ~ J Ql bull

Pyrtte is not common in the coarse gf~Jgteila where 11

occurs only ao vcry SIWJll1 (o 01ryn) idiornor(c cr~i8tals

which appear 1~o have hCEm eXtelh3i vely rejh)cel by the gn1ena

P~lrite is 8 lit~middottle morc common ln the sph11erite-rich ore

where it olcurs in tllC1 mCSrlive SphD lerl te as ldiomoIgthic

lYltmiddot1~ (0 Omiddot1rT t r Q O~~l) middot-amiddotr -tIn r 4middot Cl J 1y r )middotmiddotlmiddotcl by~ ~t~ (I)lJgt f~_1 gtt ~ 11 ~lJ1Jc~ llWtA J t-(ci 1-- ~j__ ~Cgtj~

83

the aphalerito

Sphelertte occurs tn tiQ coarse galena nD fJllall nref~S

wldc 1 appear to have boon ClXtOU i v(~ly rp1nced The 3120

of Chost) 1ufLntol1 rtr() y exceeds O1mn The cpecimens

Oof rlltHJve~ ~ln)J)e-vgt S~j P-lt 3444(~) CJ_ - 011110~- ~I ~~~~~~~J~ ~~ _ ) 0ouiflt ( ~ e~11rAly gtJ

of fl)llalelt gt 71th sID11 f3ffiOUn (~) ofu rtz gCH1gUG Jhe

E1p1l~lorj -to 11 modorately dxk tn hnnd BPOC1I1n

Minor nmount~J of Br-Ionl occur l OUg10Ut t1o spht~lertte

DS mloll 1rrcgvJr1rly 11)011 PflliChes t ntrell grenter than

C25mm in overclll width rrhbJ BlI a ap (~nrsto rOl)reemlt

Jncident Toacmnmiddotnt of 1ihe sphalerito

C1H1 COT7~ -j ] a] 0 ~lsrgtY1of- 11 )OJI1 ~middotlmiddotn-q 0-( ~he- JtJJ1u ~ lt) t-v middot l]U - (~-r h~ f I~ ~

SPHiJ erito ClS ex-tremely minute blobs moot of which (IO 10sa

than O0005mmOl in size am1 ~Jhow rnnclom oriontabion Some

minute bleba in thene nrE)rS may be pyrrhoti-be but the fine

naturo prevents procise idClTjfication

84

ASDCll1blape t

of ore bull

minerelsr

Common 13oulangClt-i0 - goJena Gona - sphnleri-te G~lena - tetrahoc1rj to Bournonie - galena Plri to - sjhalerlte

Infra l1ent Boulangeri te - bournonite - galena n01l1nnfJ~eite - gelona - sphalerite Boulangeritc - galena - tctrahedrito ChHlcoPJrrtte - sphnlerite Cklena - pyrito ~~lftn~ ~urit~middot A-~1D~i~middot~_~V_ c -shy JJ t~ - 0L~oC4-j~1 llo G-rltlema - f3pbi~l()ri to - tetrrec1rite

Uue BournoniLe - gDIena - spJolerite Galena -write - sp7Jn1erite - tetrahe(lri~E

f3S

Spray Mine

The rnaln worlring0 of the Spray [)iine are located on the

nor1l~ern slopes of Spray Hill south of manganese Hill and

on the southern side of the Comstock trern formation

The host rocks of the ore-bodies are quartzi toe ond

slflOB of the Oonahllartzite and Slate (BliElBstt 1962)

A(cording to WaIler (19(4) the Main Lode cont1nued north

and entered rocks which Bllssett (1962) oonsiderfJ to be

prohably pori oftihG Cambri9n Crimson Creek Formation

~111er oboe ved thot the lode was produotive onl in the

Jreoombrlan quartzite and sl0te as the workings in the

Carnbrian rockswere shallow nnlllhe ore completely oxidized

Detailed descriptions of the workings were given by

WaIler (19(14) and fiwelvetrels and Ward (1910) A total of

four ore-bodies were repormiddotted all of which were parnllel

strik ng NNW and steeply tlipfing The rost important lodes

ore No 1 (Main) ftnd No 3 (Gurnj_Els) Nos 2 nnd 4 were of

11ttle economic importance Valler describ(~d VIC lodcs as

well doff ned fismre formmiddotti one

The ore was reported 10 comliot of g81enand a leodshy

antiJrony SUlp11ide (re erred to as jarnesoni te) with pfrie

in a gangne of ioerimiddotto md quortz AccoTf1inglo WaIler one

of the richest ore shoots discovHred in the Zeehatl ltliatrict

oocurrsc1 in the l1inin Lode in Page and [loDermottts Jorkings

The ore in thiltl shoot renched a maximum width of 16 feet ana

the leJlgl~h of ~he shoot was reported to be 400 feet WalleI

86

esttmated DppIoxirrltrt l )ly two-tl-drde of ~Ilc~ ore to be galena

Ri~ports in1icate thaL the silver content of th ore

vlrjed connider~tblyhr()llghout the mine but =Lt woulcl apreac

from th~~ avatlllble fi lturea that tho average aUvcr con L(mt

of the ore Nas of the order of 100 ozeper ton TwelvetrHGc

and WeIrd nocl a cnrreltion between high BDver ana imtimony

content8 in the ore and Twelvetrees (1901a) refcrted that

some rich untimonhtl-leail ore neayed ov(~r ~) ODe) ozs of

silver ler ton in-ITer (op ci t) staterl thattho ntimony

content of ho ore WGf-J higher in upfer levels rtnc1 that

psrtte increq~ec1 in abUDrlmce at lOer levels

ThepreS6flce of small Cluntt tje~1 of argentitc flsfjociaterl

ttl _ 1 l~rjteI

CO-~ ~ revmiddotr~middotJ1J brt1Pemiddott+e~gtJ (1910) t-lmiddotJ~eClmnI) ~ imiddotr lmiddoto1 lmiddotJtt ~1Jmiddot ~l ~~O

(X235P52) tnlhe T(sm9nian Museum colloction confirms this

recurt This ~-)pecimen which Hl originc1lly in the W 1

Pettord col1ection contnins patches of rlrgcntite up to 3cm

x 2cm occurring ~lS thin films on ~ddlrt Ca 111088 of galena

covell~lte and lwrttC dt1iin lihe arge1titc flere noted in

polished section

Pett~erll (op cit p9 ) Chl0 recoriled the presence of

mltive antimony nil thin rillfJ~tjng patches about 811 inch

ln (Hameter irnplantec1 on H si l1Coovs matr-Ix tt T~jf) ikntt shy

fic~~ljon mal be ttnrl-iable as a sicoimcn from PettorO to col-

lectiton (now eclmen no Xf17 in -thCl lHDInnian V)USCWfi Col1ecshy

h nqt l n(lI 1 0 U ~ -ion)J lltbi1 rlt) J __ ~ J ~ IPJ11 -l4V(J 41~14monyVL Unmiddotmiddotmiddotbmiddotnnw t~~~Jbn9

1dmtified flO EJtHmite In Ihe abtHmce of any reports of

n bullJ v Q timiddoton1 dgtro 711 () rgtlfj bullbullf _ in +lC~I 14O~~J ~han bull no rnV(J

i

~~lj I~l )~ -1 bull 10l1 L tle~Jc ibull it

e lik-]middot lllt 1111 Cl-ITIOYl i ~ro ~t ( r poi cy fJ 1 - J IJdJP ~y t) no

87

Ietterd (opeit) also liste( small amounts of the secondary

minerals ke1mesi te and atjblconite in the Spray workingth

The gOS3ftfi outcrop of Gurniemiddot s Lode at trw tcrp of the

Spray Hill wao reported h~ ~rw)lvetrees and Nard (1910) to

be rich in naltive silver and silver chlor14n

Sr9cimens of ore in thc) tt1rlSmtln1anMuseum collectt on

fnd rtt9tertal collected from the tmrfaee dumps near the

lJorkj ngs were found to contain boulangerite galcma pyri te

and 9phalerite atl the-major metallic corJst1tttents in a

gIFtUg119 of aideri teurol Imd (lUJ)rtz Minor cOflsti tuents irlentified

in l)olisrH~dsectjonB were arsenopyrite tetlahedrl ta bourshy

nordta ehale~pyrite rnd pyrrl1oti ie T1H pIoportions of

the v~ril)lJs cOlUrtituents nhow 0 cOrlsideehle vUriation

between flpec1mens

Stil1wel1 (1947) (lesoribedsome npecimens from the

S~ray Mtue andtlHSlre i~J good agreement between Stil1well 8

deeeri pt1ons and the Beeimens exrunined in this investigation

All of the rninera1a and feaures de~lcrfbed by Stil1wel1 hOva

been observed and s(ma~ ~~dditiol1alminen~la (bournonlte and

pyrrhotite) have been noted Sphalerimiddotte is considerably

more aburldant in some of tihase specimenathan 1n tllOse

described by SIil1wel1

Boulan~erita wlieh istho most abundarrt ore rrdneral in

the sulle of opecif)en8 examined replesena t~je Inineral reshy

farred to Q8 jilmcsonite in many eerljer nccountg of the

geology d~ thn Zeehnn area Theproperties and identifictltion

ObL ~l ho~lQn()Iri~ ~~ lttT 11ltigt~crlj(bull Lsewneret ( PlO1011) orne~t L ( I ~~ S

88

specimens of ore (etg 1202) consist essentlally of rrtaseive

boulallgi~rite with minor aliOunts of tetrnhedrito gmlema

bournonitat pyrite RllG arsenopri to ~prescnt as inclu8l ona

INittdn th~~ boulangegtrite fIetraheltiri te is fl comrlOfl assooshy

late of the llOulan eri te in these specimens and in ono

sarrlple (1 50) constitutes apIuoximately 10 of the ore The

size of the tmlivilu81 areas of ter-rahedrite within the

boulangenite rftLngf from very Ftne up to O 25mrn 2l1f1 the

tlLxturul rc~lBiionahip suggGSts thst ie1rahedrite hrupound undeI shy

ponepartial replacement by boulrmgertte frhe fremiddot~uenoy of

middotthe fU38ernblJge bOl)I~ngerite-tetrnlHedrito io in Iteeplng Iidth

the ohservtation of tltel vetrees and Ward (1910) that h1gh

silver valuog were often related to hilth antimollY content

in ore from the SPlI~y iine

ECHJI~~lnged ta alf3o occurs throughout much 01 the 813erite

gengue SJJmiddot fine rod-li ke (md nasdle-11ke crys tal~ (eg P 181)

lt ~Wimiddottlt the longthe of ihe individual crystals rarely exceeding

O05mm fhese fin(~ cryfdals ar~ common in sm~111 clusters

lEUld velnleta and ()cctudcmally merge to form areas consi~3ting

of mFUfH~S of thfHH3 ftne ftroa~Jf and nnEHtl1es u (Plate ~59No 1)

fli(J vdltlth of the individual mamdve HreaEl reoches a mflximum

OT evE~ral centimetres (Si P 00)

GHlena is leSfl atl11ndantmiddot than boult3ngerite in tlH~se

spocimens and 2H rsrely observed lfUihout some aHwciated

k 1 J f 1 ( on 1(~)t )Ut)Vd angen e E~ argor CUeuroUJS 0 ga~3Fl e J J) ~re

up to sEnreral ce1ttmetres in overill l11i dth I~nd are surrounded

by gangnet nnd cont]in 1~j_ne inclusions of boulHngeri ta

- -------------------------------- ------

89shy

tetr51hedri te sphalerita pyrl te and arsenopyri te Grdena

~lao oonurs ~l8 freqlltmt fine (O01-007mm) 1ncluslons

of irregular outline within 1he maas1ve houlangeri tee

130urnoni te focrns sm11 irrerularly-shaped pt~tehm

within the massive boulangarite the overall width ()f these

inclnsions ranging from O025mrn ul) to O )rnm A small

amount of hournonite W~JS also observed as nstrrow veinlete

(oOOmm to O015mm jn v1dth) in Sl)hsJeri te and pyr1 te

(P 196) bull Cbaleopyri t( t tertrahe(1rite tmd galena are Jgtresent

pound$ inelusiona within the bournonite in these veinlemiddotts

Pllite and arsenopyri te are Invjuiahly associated hut

in VtiriOttS prop()rtions and occur as idiomorrhie and 6ubidshy

iomorphic crYHtala di flseminated through the other sLlphides

and tllr~ gnngtte Masavs areas up 10 several centimetres in

i1idth 8re alao resent (eg middotP H39 192) in ~ome speclmens

In tle[H~ l3reas pyri to is generally the lJl()re alnlndarrt of the

two rninerals but occasionally arEHt101)yrito ia the matn conshy

sti tuantThe in(1jviduol erystnlG of each mineral range from

O01rmn up to O 5r1l Both minereh1 have apparerltly undershy

one ext~cnsive replacement by boulatlgerite gaJsna tetrashy

hedrite nrdl bournQnite and partinl replacernent by sphaJerif(2)o

J3cmlarlgeri te temiddottrahettrimiddotte and gal~~na occupy trrtorsti tial

areas in the m~lSt3ive pyr1te and arsenopyrite liltla also occur

as fine inclusionn and veLnle~s withinthese minerals

middot~hltlari+ll Cl nblimiddotd middot in ~Omiddot1middotp -)ir1lt~nr1 (Q 1) 18middot 191)- i~L~gt ~ bull ~ v JJ c1 JL) c~tj J 71 (1 l-~~ ~v bullt~~t~ ~~)t t le

but is absent or rare in others In hand specimen te sJihalshy

arife ia moderately dark

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 3: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

76

present vd thin -these bournoni to areas

rratraheclrite Hlso occurs as occaelon~tl lnelJsjons with-

in the galena but the distribution is rather sporadic

ThefH1 inclusions are more common in r339 thfln in other

sections the maxtmum si2e ObiJerved betng O)mm x O1mm

Th(~ majority of the 1etrahedrite bodies aIE~ within the size

rHnge O02mrn to O06ni anll the ~JhGr)e ia gcnerally irregular

Occasional composj te bcmlnngeri te - ietrahedrl te tnclus1ons

are also preuent~ wj thin the galena_ Pyrargyri e occurs in

the gr~lena 1tIS rare frn]~tll incluBions (O01mm to O035rnm)

~xpproxtmately ovate in shape (P339 340) Composite

boulangerite - pyrar~yrie 1neludcm~ vdthin lh( galena were

also noted

1yrite is dtssemtrHltted 1hroughou1 the gangue alj floe

idiomori~hic and m1bicUomOThic crystalG but shows as Varishy

ahle dist1tbution in thegalenJ Pyri te 18 common within

the galena in P338 and 341 but io not common in the olhE~r

sectiOYlH In P338 and 341 t~le pyr5te forum pnfiches up to

sever~~J_ nil1irl1etres in overall width Hnd shows cvL] ()flCe of

iKtrtatci1 repltC~~ment by galena Prri to occurs ion P bull 339 and

340 as only EHIlal1Jncl1H3OUH in the gfllenn and h)~lS appaTcJntly

been ewtoneively re)laee(l hythe galena

ArfJenopyri+o fOtpound clusters of small ldiomorphic

crystahi O02mm to O05mrl1 vdthin the f~(tlena and ttH quartz

Mnrcnsi t(~ is no common but ooca~ onal tnclulons up to

OOlrnm Iere noted Nimiddotthln galena in 2338 ltJmd 340 B(rth the

arselloprri te and t~lc~mlt~rCilsite appeflr to h~tve ufl(hJgone

77

partial repaeement by the galena

S])hal~ri0 10 j)IEH3euron1t in hene smnplen (un only a minor

constituent and OCCUrIJ8S small incluDionu Jlth1nt [J10

apIiarently extfiivoly rellacefl by golonn Some of thoEle

sphelerito bol1os contain minute axsolution blabs of chnlshy

copyrite ~ ~Jn1 a noticoable feJtiure 01 the~3e Is tIll zonal

relatiorlsbi with re~3pe(~t to the uhujG ofthe sph~~lerie

body l~hese ip~l~lorito bodieH ithin the alena are often

rov~hly oV8te am~ rn-rely have a maximvm dimension grelter

-than 0 1n11I1

Hare fine (0 01r1m) paricleo of old were noted w1 th5n

middotPl ~ 1 2 ceop ampr -he smiddotmiddotmiddotmiddot I b ~ n f 1middotmiddotmiddot0 middot11 (p 338 340)u llt o~~- ~t~ tjt~If)V J~ ~Aj t t3 1 _~~ _ 1 middotu- ~ ) ~

J7

lmiddotmiddot~o-Jq~td) Cv~91 ~~ __

04It-JILl

0middotmiddotv iAl~ 1 ~H IJ~~~111I F bull I

eon10n~ Dou [iInpor1 tiC - emiddot~Jonc1 1111 ~l ob ~ u~~ ~~( tjt~lri- ~J

Uournoni 0 - nnJena

1 nfr(VpHmt rSH~olW11 to- hOtlY It1(or-j ~e - middot1 (y111 lt~~o~~1r~ i + f 1(middotmiddot~- ~ ~) iJ ~i ftJ l~~ lt r

middotI~)middotl-in~middotmiddot ~ ~ _ 1()lP1f~ j~1gta~ 1 )_bull L _(~ij ~ iQ o~ f_Jrt ~ ~

rtoul~)n erie - r)ournon1te -nJnn middotllQ~)lnnfnito - f~l((~ - to middotrnl~odr~I to no~llongertte - P) r~te

Hournoni fe - EwrJ to Jknlrnrm1 o -ratrn~1(i1rto

Cho10oi)ymiddotrit-f) - fF~~~nl~rmiddotte bull f J ~ 1 shy ~vmiddot

G lcna - mnrCt~~1tte

(~~iLontl - r T1in~ cri to I nl~nltI f )1 t 4 I + ~lt~ 0 1~ ~Lr-r~ j - 91tOiJ ~JJJA lIJt Vl ~_ Imiddot_~J ~~J J~ IJ1iJ

(kl1~na - t(ftrc~lndJt 0 ry1t 0 - fJph0~crte

11101 n~)ln~~nrdtm - r~pr~ ~lo cJ J 0 __ bully

~_ ~~ 1(n I r~ r ) J~ ~l r~~l1 t~ bull - rru(~yrj te

79

Houth Nueena ronpect lltO

rrhe 1Norlclngn kn(Jwn os the South NVbeena Prospect are

~~~ 1middotmiddotmiddot(1 rox4 rn1 Cll J~ rn- J It bull ou+1 of -ll( 11ut)eeYl- JUfilJ t ~dJ(rUO t-tlj J _ - rt~~ lt 1) 1-- J _~O ~ ~J L Ut 3 rclJ d 11

Ill) rkt ngs

1 urrtF b c eVlint-1on 1 C1ilri -iJ i-- ( lclo1) 1 middot~middot~101middottIJ1middot~v ~ v t5 r l0 4 ~ ) t C t _~

(f Tlo14nsbullbullbull A t middot J olt~ la~I C (I COVr(0 ~~ lFnonltloi1~amp rL lJ -le in tIOmiddotKmiddotmiddotIUmiddotSI - (~)0~ - (1 t L) ~ I

middotnmiddotfmiddotlr~t Q 1n1nnel ( ~ _v ) 10 (J4middot ~lvemiddottmiddotmiddotoe1- rl~~~-(1 middotqmiddotmiddot1 1910) bull_ 0 1 (t~11r JtJ t1 bull _ bullbull t~~) _

Tho lodc~ cont~1in(~(1 a BElFtm of galeml from one to two inched

in thic1mes8 8oood1oC to iJaIler nnd assu7S 0 tbEl galemshy

middotvcgt ~middotltmiddotmiddot~lto If 7v emiddotn (l -(j 1(00 ~ver per middottonts v 11 c ~Ow l _ vv J tlLmiddot J 4JO ~ ~l f No rninernlized material is now prEwent in tho dumps

ne8Itlw worldns

80

Colonel north Minos I _ iiIl i bull bull

11 1 tmiddot I (gt- ~11 1 1 ~ b ~middotiir 0Ibull ~ lt Cf 0 viean ullC Ujjray ne nt vlO uU OU) 11 n

incluc1es nuruorou8 rWJDll vorkinCG which wore on 10[1800 hold

a~~ varieruJ times 1Jy te Colonel North TlneCl nwl Itilway

Co bull N J and nre norr1nJl~r reftirre(~ to a8 tho Colonel North

j1lnes These worln[~G in~lud( the Colonel North hnft the

Vtctorltl - ZeohcH1 hnfmiddott the Silver POWTI lt1l1it the Silver

Lnc ~r1middotitmiddot ~ntl tmiddotmiddotc t1lvI Vjvo ~rorltinc TlIO (1 b~middotmiddotSmiddotlrina ) u 11 bullmiddot ~ l bull -_ ___ v Ci (tt V H lo-J 1- 7Jo A kJ Q furtIer BOUt waG -Iso operated by hiB Company aml I[U3 rcshy

farred to in some ropor0s ~JD th~ Colonel North rfine

Bljssott (1962) has r1escribod ~h0 country ro~ks in the

Colonel North iaren a~l IIfolltled nnd 4io urbcc1 ohnle ilate and

nn] e 11l-rt7ite rl (1 onn Kh~ ch ~e et 0(gt 1- ( () 011 gt n Ttff~- -4- JJ 1 iJI middot~otJ ( I~L ~~ (~ ~J~middot-1~ )_ lJi~ ~~ fjCil~ lft

z1t 0 lt1l1(1 SIft1gt0 bull

The mineralogy of th( ore found in tIJo v~~riOuH worlrin(o

nppe1ro to have been mVJOnt1r111y uniform 1)escription8 by

m~lemiddotlv~middotlmiddot1el~u ~ rd Fnll~a (19middotmiddot10) inaiU - 1-1+c~(b Cltgtlrgtn~wnl--t- C~IV 0J) C LA middot 1gt(1 thi~ ~IJIIj

matn rletallic rn1n rrDl vllth EJr1811 amounts ofyri e sphalshy

orj(e Gnd an at1t5mony-bear1ngr~tntn~al (probably boulangerito)

in a gangue of qtlart~ nnd s1Grite The minoralization was

pDtob anltl of low Brad e overall

The Chlori1e TJodo in ~he north-eoJJt 1)[11( of the Colonel

North area was described by Twclvet1oEH1 ml rrnId ne c8rrying

bands and noduleo of hematite and memillnry I1monita the

nodules containing Dil1er chlorl(1e nncl native silver Some

high gr(l e pat(hes nosyed as hi-gh as 1000 OZB oilver per

81

ton but the average ~Jilver content of the materinl exshy

tracterl was 40 ozs silver per ton

Dumps in the vicinl tV of the vsrioufl Nokingr~ have

been eXHmined for samples afore but most contain only traces

of galena ill ahnle qiL1irtz and siieri tee Jhe only useful

mateltl~ifll for miner1l1ogical examtnation W8S founfJ in the

dumps of ~J01rle sffi1ill workings in what TJolvetreer rnd lacd

(1910 p_118) lleserib(d IMl thH fUrra-may Formr1tion u bull rfhese

workingg arlt~ in tha southern pHrt of the Colonel North area

Hnd Bre situated close to thE Grubb t El tram Twelvetrees and

Viard sta ted that tho vein of ore was about 18 inches in

W-rlth d middot t~at middotmiddotl1middotltnl~it C aomV1~V 1middot1middot1 ~Iith r-JJ-lbullLII J~ t (~~lt Jt JgtJi(~ ~i v VOv af-oltllt ~-dl-iJl~l ~ v E~~T~ 1lJ4t

occurri tl onl~ in spots lrde dCGer pt100 is in accon~~1nce with the samples collected In addition to ephalerite and

galena minor amourrts of boulangeri to tetrahedr1 te bourshy

nord te pyri to nnr1 egthJlcopjrri te were observed in p(11iD J ed

secmiddottionn of the poundpecimerm

1he g~11ena spotstt (P342 34)) are patches of galena

from 1mm up -to 25em in overall width in mas8l~le white

quertz Some ~lp0cimene of quartz are -the h1clred H or chopshy

d tl f) re+xr~ to by nr (J~ tt (11gt10 t - 1qJIg) r-o 11bull iJvmiddot LP tli ) t cmiddottmiddotrl p ~4 ~ +ne

north-etuJt of Taamnnia let ietd attrHmted the svrp angular

impreslJions tn the (lut3rtz to feldspar crystals but it 3IJJGars

l11oly that the im1ressions in this material fror the

Colonnl North 8ea have been CE1USG(1 hy Cl cryst~al1ine Cflfrbshy

onate ]rObtol1l1y sid eri ta which naB siu(~G bean leachefl Ollt

82

~flhe gelena i~3 ric) in inclusions of bou13n~erlte and

inclnsiollS ofte-trchedri te and bOUXtlOl1i te Elre rllao common

I1lC bonlaneri-te occurs as fine needle-l1ke bodies riwging

in length from OOf)2mrn up to O08mm Thena shmv an even

distribution through most of ihe gcllena but are occasionally

conoentratef~ inmiddotto erneI1 pfttches (up to O3mm in width) eonshy

slstillg of cllJBters ofthef-Je tine needles Tetrohedri to is

leGs evenly dist~rHUted and occurs as irregolarly shaped

bodje~3 ran~inf5 in overall w1dth from O01mrn to O075mrn

These t0trahedri te bodies always occur tn the alena but are

freiuently observHd on the borders of sphalerite inclusions

in the galena Bournoni te is present inmiddotthe palcf1m as very

fine bodies COITIWOn and evenly diatr111uted ioP 34 hut less

_ 343common Ifl 1~ bull PleCle bocH-ea clre getlerally roil-like or

round in Bhnpe gltlou~h it ia quj te lihely that many of the

rouni~ hodi(~s are merely eross-secmiddottions of rod-li1H2J bodies

Th 1 - lhrJ 0 tmiddot1Ilt1lt 11 vJr1 f 011 0 (10)1n t Omiddot ()15-m ndv vt~iU-- 1 tA Ij- LJ3 middot~O t4 ~ 1 bull tmiddotv v bull middotLmiddot9 ttmiddotmiddot

tho diameters of the round boriies rnge from O 001mm to

O005rm1 In 12342 SOftie of the bourmmite tnclttsions dnow

) M(lnl~ltmiddot j r middotmiddotymiddot~tnmiddott IF -lj 3J rn-tJ 1middot -Ftl lt~ en(~ ~~ ampi- ~ A - 17- 1_bull ~_ gt l~J ~ bull v tt J v P 1 v~t-l v JIJ (Jr ~~) ~ J Ql bull

Pyrtte is not common in the coarse gf~Jgteila where 11

occurs only ao vcry SIWJll1 (o 01ryn) idiornor(c cr~i8tals

which appear 1~o have hCEm eXtelh3i vely rejh)cel by the gn1ena

P~lrite is 8 lit~middottle morc common ln the sph11erite-rich ore

where it olcurs in tllC1 mCSrlive SphD lerl te as ldiomoIgthic

lYltmiddot1~ (0 Omiddot1rT t r Q O~~l) middot-amiddotr -tIn r 4middot Cl J 1y r )middotmiddotlmiddotcl by~ ~t~ (I)lJgt f~_1 gtt ~ 11 ~lJ1Jc~ llWtA J t-(ci 1-- ~j__ ~Cgtj~

83

the aphalerito

Sphelertte occurs tn tiQ coarse galena nD fJllall nref~S

wldc 1 appear to have boon ClXtOU i v(~ly rp1nced The 3120

of Chost) 1ufLntol1 rtr() y exceeds O1mn The cpecimens

Oof rlltHJve~ ~ln)J)e-vgt S~j P-lt 3444(~) CJ_ - 011110~- ~I ~~~~~~~J~ ~~ _ ) 0ouiflt ( ~ e~11rAly gtJ

of fl)llalelt gt 71th sID11 f3ffiOUn (~) ofu rtz gCH1gUG Jhe

E1p1l~lorj -to 11 modorately dxk tn hnnd BPOC1I1n

Minor nmount~J of Br-Ionl occur l OUg10Ut t1o spht~lertte

DS mloll 1rrcgvJr1rly 11)011 PflliChes t ntrell grenter than

C25mm in overclll width rrhbJ BlI a ap (~nrsto rOl)reemlt

Jncident Toacmnmiddotnt of 1ihe sphalerito

C1H1 COT7~ -j ] a] 0 ~lsrgtY1of- 11 )OJI1 ~middotlmiddotn-q 0-( ~he- JtJJ1u ~ lt) t-v middot l]U - (~-r h~ f I~ ~

SPHiJ erito ClS ex-tremely minute blobs moot of which (IO 10sa

than O0005mmOl in size am1 ~Jhow rnnclom oriontabion Some

minute bleba in thene nrE)rS may be pyrrhoti-be but the fine

naturo prevents procise idClTjfication

84

ASDCll1blape t

of ore bull

minerelsr

Common 13oulangClt-i0 - goJena Gona - sphnleri-te G~lena - tetrahoc1rj to Bournonie - galena Plri to - sjhalerlte

Infra l1ent Boulangeri te - bournonite - galena n01l1nnfJ~eite - gelona - sphalerite Boulangeritc - galena - tctrahedrito ChHlcoPJrrtte - sphnlerite Cklena - pyrito ~~lftn~ ~urit~middot A-~1D~i~middot~_~V_ c -shy JJ t~ - 0L~oC4-j~1 llo G-rltlema - f3pbi~l()ri to - tetrrec1rite

Uue BournoniLe - gDIena - spJolerite Galena -write - sp7Jn1erite - tetrahe(lri~E

f3S

Spray Mine

The rnaln worlring0 of the Spray [)iine are located on the

nor1l~ern slopes of Spray Hill south of manganese Hill and

on the southern side of the Comstock trern formation

The host rocks of the ore-bodies are quartzi toe ond

slflOB of the Oonahllartzite and Slate (BliElBstt 1962)

A(cording to WaIler (19(4) the Main Lode cont1nued north

and entered rocks which Bllssett (1962) oonsiderfJ to be

prohably pori oftihG Cambri9n Crimson Creek Formation

~111er oboe ved thot the lode was produotive onl in the

Jreoombrlan quartzite and sl0te as the workings in the

Carnbrian rockswere shallow nnlllhe ore completely oxidized

Detailed descriptions of the workings were given by

WaIler (19(14) and fiwelvetrels and Ward (1910) A total of

four ore-bodies were repormiddotted all of which were parnllel

strik ng NNW and steeply tlipfing The rost important lodes

ore No 1 (Main) ftnd No 3 (Gurnj_Els) Nos 2 nnd 4 were of

11ttle economic importance Valler describ(~d VIC lodcs as

well doff ned fismre formmiddotti one

The ore was reported 10 comliot of g81enand a leodshy

antiJrony SUlp11ide (re erred to as jarnesoni te) with pfrie

in a gangne of ioerimiddotto md quortz AccoTf1inglo WaIler one

of the richest ore shoots discovHred in the Zeehatl ltliatrict

oocurrsc1 in the l1inin Lode in Page and [loDermottts Jorkings

The ore in thiltl shoot renched a maximum width of 16 feet ana

the leJlgl~h of ~he shoot was reported to be 400 feet WalleI

86

esttmated DppIoxirrltrt l )ly two-tl-drde of ~Ilc~ ore to be galena

Ri~ports in1icate thaL the silver content of th ore

vlrjed connider~tblyhr()llghout the mine but =Lt woulcl apreac

from th~~ avatlllble fi lturea that tho average aUvcr con L(mt

of the ore Nas of the order of 100 ozeper ton TwelvetrHGc

and WeIrd nocl a cnrreltion between high BDver ana imtimony

content8 in the ore and Twelvetrees (1901a) refcrted that

some rich untimonhtl-leail ore neayed ov(~r ~) ODe) ozs of

silver ler ton in-ITer (op ci t) staterl thattho ntimony

content of ho ore WGf-J higher in upfer levels rtnc1 that

psrtte increq~ec1 in abUDrlmce at lOer levels

ThepreS6flce of small Cluntt tje~1 of argentitc flsfjociaterl

ttl _ 1 l~rjteI

CO-~ ~ revmiddotr~middotJ1J brt1Pemiddott+e~gtJ (1910) t-lmiddotJ~eClmnI) ~ imiddotr lmiddoto1 lmiddotJtt ~1Jmiddot ~l ~~O

(X235P52) tnlhe T(sm9nian Museum colloction confirms this

recurt This ~-)pecimen which Hl originc1lly in the W 1

Pettord col1ection contnins patches of rlrgcntite up to 3cm

x 2cm occurring ~lS thin films on ~ddlrt Ca 111088 of galena

covell~lte and lwrttC dt1iin lihe arge1titc flere noted in

polished section

Pett~erll (op cit p9 ) Chl0 recoriled the presence of

mltive antimony nil thin rillfJ~tjng patches about 811 inch

ln (Hameter irnplantec1 on H si l1Coovs matr-Ix tt T~jf) ikntt shy

fic~~ljon mal be ttnrl-iable as a sicoimcn from PettorO to col-

lectiton (now eclmen no Xf17 in -thCl lHDInnian V)USCWfi Col1ecshy

h nqt l n(lI 1 0 U ~ -ion)J lltbi1 rlt) J __ ~ J ~ IPJ11 -l4V(J 41~14monyVL Unmiddotmiddotmiddotbmiddotnnw t~~~Jbn9

1dmtified flO EJtHmite In Ihe abtHmce of any reports of

n bullJ v Q timiddoton1 dgtro 711 () rgtlfj bullbullf _ in +lC~I 14O~~J ~han bull no rnV(J

i

~~lj I~l )~ -1 bull 10l1 L tle~Jc ibull it

e lik-]middot lllt 1111 Cl-ITIOYl i ~ro ~t ( r poi cy fJ 1 - J IJdJP ~y t) no

87

Ietterd (opeit) also liste( small amounts of the secondary

minerals ke1mesi te and atjblconite in the Spray workingth

The gOS3ftfi outcrop of Gurniemiddot s Lode at trw tcrp of the

Spray Hill wao reported h~ ~rw)lvetrees and Nard (1910) to

be rich in naltive silver and silver chlor14n

Sr9cimens of ore in thc) tt1rlSmtln1anMuseum collectt on

fnd rtt9tertal collected from the tmrfaee dumps near the

lJorkj ngs were found to contain boulangerite galcma pyri te

and 9phalerite atl the-major metallic corJst1tttents in a

gIFtUg119 of aideri teurol Imd (lUJ)rtz Minor cOflsti tuents irlentified

in l)olisrH~dsectjonB were arsenopyrite tetlahedrl ta bourshy

nordta ehale~pyrite rnd pyrrl1oti ie T1H pIoportions of

the v~ril)lJs cOlUrtituents nhow 0 cOrlsideehle vUriation

between flpec1mens

Stil1wel1 (1947) (lesoribedsome npecimens from the

S~ray Mtue andtlHSlre i~J good agreement between Stil1well 8

deeeri pt1ons and the Beeimens exrunined in this investigation

All of the rninera1a and feaures de~lcrfbed by Stil1wel1 hOva

been observed and s(ma~ ~~dditiol1alminen~la (bournonlte and

pyrrhotite) have been noted Sphalerimiddotte is considerably

more aburldant in some of tihase specimenathan 1n tllOse

described by SIil1wel1

Boulan~erita wlieh istho most abundarrt ore rrdneral in

the sulle of opecif)en8 examined replesena t~je Inineral reshy

farred to Q8 jilmcsonite in many eerljer nccountg of the

geology d~ thn Zeehnn area Theproperties and identifictltion

ObL ~l ho~lQn()Iri~ ~~ lttT 11ltigt~crlj(bull Lsewneret ( PlO1011) orne~t L ( I ~~ S

88

specimens of ore (etg 1202) consist essentlally of rrtaseive

boulallgi~rite with minor aliOunts of tetrnhedrito gmlema

bournonitat pyrite RllG arsenopri to ~prescnt as inclu8l ona

INittdn th~~ boulangegtrite fIetraheltiri te is fl comrlOfl assooshy

late of the llOulan eri te in these specimens and in ono

sarrlple (1 50) constitutes apIuoximately 10 of the ore The

size of the tmlivilu81 areas of ter-rahedrite within the

boulangenite rftLngf from very Ftne up to O 25mrn 2l1f1 the

tlLxturul rc~lBiionahip suggGSts thst ie1rahedrite hrupound undeI shy

ponepartial replacement by boulrmgertte frhe fremiddot~uenoy of

middotthe fU38ernblJge bOl)I~ngerite-tetrnlHedrito io in Iteeplng Iidth

the ohservtation of tltel vetrees and Ward (1910) that h1gh

silver valuog were often related to hilth antimollY content

in ore from the SPlI~y iine

ECHJI~~lnged ta alf3o occurs throughout much 01 the 813erite

gengue SJJmiddot fine rod-li ke (md nasdle-11ke crys tal~ (eg P 181)

lt ~Wimiddottlt the longthe of ihe individual crystals rarely exceeding

O05mm fhese fin(~ cryfdals ar~ common in sm~111 clusters

lEUld velnleta and ()cctudcmally merge to form areas consi~3ting

of mFUfH~S of thfHH3 ftne ftroa~Jf and nnEHtl1es u (Plate ~59No 1)

fli(J vdltlth of the individual mamdve HreaEl reoches a mflximum

OT evE~ral centimetres (Si P 00)

GHlena is leSfl atl11ndantmiddot than boult3ngerite in tlH~se

spocimens and 2H rsrely observed lfUihout some aHwciated

k 1 J f 1 ( on 1(~)t )Ut)Vd angen e E~ argor CUeuroUJS 0 ga~3Fl e J J) ~re

up to sEnreral ce1ttmetres in overill l11i dth I~nd are surrounded

by gangnet nnd cont]in 1~j_ne inclusions of boulHngeri ta

- -------------------------------- ------

89shy

tetr51hedri te sphalerita pyrl te and arsenopyri te Grdena

~lao oonurs ~l8 freqlltmt fine (O01-007mm) 1ncluslons

of irregular outline within 1he maas1ve houlangeri tee

130urnoni te focrns sm11 irrerularly-shaped pt~tehm

within the massive boulangarite the overall width ()f these

inclnsions ranging from O025mrn ul) to O )rnm A small

amount of hournonite W~JS also observed as nstrrow veinlete

(oOOmm to O015mm jn v1dth) in Sl)hsJeri te and pyr1 te

(P 196) bull Cbaleopyri t( t tertrahe(1rite tmd galena are Jgtresent

pound$ inelusiona within the bournonite in these veinlemiddotts

Pllite and arsenopyri te are Invjuiahly associated hut

in VtiriOttS prop()rtions and occur as idiomorrhie and 6ubidshy

iomorphic crYHtala di flseminated through the other sLlphides

and tllr~ gnngtte Masavs areas up 10 several centimetres in

i1idth 8re alao resent (eg middotP H39 192) in ~ome speclmens

In tle[H~ l3reas pyri to is generally the lJl()re alnlndarrt of the

two rninerals but occasionally arEHt101)yrito ia the matn conshy

sti tuantThe in(1jviduol erystnlG of each mineral range from

O01rmn up to O 5r1l Both minereh1 have apparerltly undershy

one ext~cnsive replacement by boulatlgerite gaJsna tetrashy

hedrite nrdl bournQnite and partinl replacernent by sphaJerif(2)o

J3cmlarlgeri te temiddottrahettrimiddotte and gal~~na occupy trrtorsti tial

areas in the m~lSt3ive pyr1te and arsenopyrite liltla also occur

as fine inclusionn and veLnle~s withinthese minerals

middot~hltlari+ll Cl nblimiddotd middot in ~Omiddot1middotp -)ir1lt~nr1 (Q 1) 18middot 191)- i~L~gt ~ bull ~ v JJ c1 JL) c~tj J 71 (1 l-~~ ~v bullt~~t~ ~~)t t le

but is absent or rare in others In hand specimen te sJihalshy

arife ia moderately dark

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 4: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

77

partial repaeement by the galena

S])hal~ri0 10 j)IEH3euron1t in hene smnplen (un only a minor

constituent and OCCUrIJ8S small incluDionu Jlth1nt [J10

apIiarently extfiivoly rellacefl by golonn Some of thoEle

sphelerito bol1os contain minute axsolution blabs of chnlshy

copyrite ~ ~Jn1 a noticoable feJtiure 01 the~3e Is tIll zonal

relatiorlsbi with re~3pe(~t to the uhujG ofthe sph~~lerie

body l~hese ip~l~lorito bodieH ithin the alena are often

rov~hly oV8te am~ rn-rely have a maximvm dimension grelter

-than 0 1n11I1

Hare fine (0 01r1m) paricleo of old were noted w1 th5n

middotPl ~ 1 2 ceop ampr -he smiddotmiddotmiddotmiddot I b ~ n f 1middotmiddotmiddot0 middot11 (p 338 340)u llt o~~- ~t~ tjt~If)V J~ ~Aj t t3 1 _~~ _ 1 middotu- ~ ) ~

J7

lmiddotmiddot~o-Jq~td) Cv~91 ~~ __

04It-JILl

0middotmiddotv iAl~ 1 ~H IJ~~~111I F bull I

eon10n~ Dou [iInpor1 tiC - emiddot~Jonc1 1111 ~l ob ~ u~~ ~~( tjt~lri- ~J

Uournoni 0 - nnJena

1 nfr(VpHmt rSH~olW11 to- hOtlY It1(or-j ~e - middot1 (y111 lt~~o~~1r~ i + f 1(middotmiddot~- ~ ~) iJ ~i ftJ l~~ lt r

middotI~)middotl-in~middotmiddot ~ ~ _ 1()lP1f~ j~1gta~ 1 )_bull L _(~ij ~ iQ o~ f_Jrt ~ ~

rtoul~)n erie - r)ournon1te -nJnn middotllQ~)lnnfnito - f~l((~ - to middotrnl~odr~I to no~llongertte - P) r~te

Hournoni fe - EwrJ to Jknlrnrm1 o -ratrn~1(i1rto

Cho10oi)ymiddotrit-f) - fF~~~nl~rmiddotte bull f J ~ 1 shy ~vmiddot

G lcna - mnrCt~~1tte

(~~iLontl - r T1in~ cri to I nl~nltI f )1 t 4 I + ~lt~ 0 1~ ~Lr-r~ j - 91tOiJ ~JJJA lIJt Vl ~_ Imiddot_~J ~~J J~ IJ1iJ

(kl1~na - t(ftrc~lndJt 0 ry1t 0 - fJph0~crte

11101 n~)ln~~nrdtm - r~pr~ ~lo cJ J 0 __ bully

~_ ~~ 1(n I r~ r ) J~ ~l r~~l1 t~ bull - rru(~yrj te

79

Houth Nueena ronpect lltO

rrhe 1Norlclngn kn(Jwn os the South NVbeena Prospect are

~~~ 1middotmiddotmiddot(1 rox4 rn1 Cll J~ rn- J It bull ou+1 of -ll( 11ut)eeYl- JUfilJ t ~dJ(rUO t-tlj J _ - rt~~ lt 1) 1-- J _~O ~ ~J L Ut 3 rclJ d 11

Ill) rkt ngs

1 urrtF b c eVlint-1on 1 C1ilri -iJ i-- ( lclo1) 1 middot~middot~101middottIJ1middot~v ~ v t5 r l0 4 ~ ) t C t _~

(f Tlo14nsbullbullbull A t middot J olt~ la~I C (I COVr(0 ~~ lFnonltloi1~amp rL lJ -le in tIOmiddotKmiddotmiddotIUmiddotSI - (~)0~ - (1 t L) ~ I

middotnmiddotfmiddotlr~t Q 1n1nnel ( ~ _v ) 10 (J4middot ~lvemiddottmiddotmiddotoe1- rl~~~-(1 middotqmiddotmiddot1 1910) bull_ 0 1 (t~11r JtJ t1 bull _ bullbull t~~) _

Tho lodc~ cont~1in(~(1 a BElFtm of galeml from one to two inched

in thic1mes8 8oood1oC to iJaIler nnd assu7S 0 tbEl galemshy

middotvcgt ~middotltmiddotmiddot~lto If 7v emiddotn (l -(j 1(00 ~ver per middottonts v 11 c ~Ow l _ vv J tlLmiddot J 4JO ~ ~l f No rninernlized material is now prEwent in tho dumps

ne8Itlw worldns

80

Colonel north Minos I _ iiIl i bull bull

11 1 tmiddot I (gt- ~11 1 1 ~ b ~middotiir 0Ibull ~ lt Cf 0 viean ullC Ujjray ne nt vlO uU OU) 11 n

incluc1es nuruorou8 rWJDll vorkinCG which wore on 10[1800 hold

a~~ varieruJ times 1Jy te Colonel North TlneCl nwl Itilway

Co bull N J and nre norr1nJl~r reftirre(~ to a8 tho Colonel North

j1lnes These worln[~G in~lud( the Colonel North hnft the

Vtctorltl - ZeohcH1 hnfmiddott the Silver POWTI lt1l1it the Silver

Lnc ~r1middotitmiddot ~ntl tmiddotmiddotc t1lvI Vjvo ~rorltinc TlIO (1 b~middotmiddotSmiddotlrina ) u 11 bullmiddot ~ l bull -_ ___ v Ci (tt V H lo-J 1- 7Jo A kJ Q furtIer BOUt waG -Iso operated by hiB Company aml I[U3 rcshy

farred to in some ropor0s ~JD th~ Colonel North rfine

Bljssott (1962) has r1escribod ~h0 country ro~ks in the

Colonel North iaren a~l IIfolltled nnd 4io urbcc1 ohnle ilate and

nn] e 11l-rt7ite rl (1 onn Kh~ ch ~e et 0(gt 1- ( () 011 gt n Ttff~- -4- JJ 1 iJI middot~otJ ( I~L ~~ (~ ~J~middot-1~ )_ lJi~ ~~ fjCil~ lft

z1t 0 lt1l1(1 SIft1gt0 bull

The mineralogy of th( ore found in tIJo v~~riOuH worlrin(o

nppe1ro to have been mVJOnt1r111y uniform 1)escription8 by

m~lemiddotlv~middotlmiddot1el~u ~ rd Fnll~a (19middotmiddot10) inaiU - 1-1+c~(b Cltgtlrgtn~wnl--t- C~IV 0J) C LA middot 1gt(1 thi~ ~IJIIj

matn rletallic rn1n rrDl vllth EJr1811 amounts ofyri e sphalshy

orj(e Gnd an at1t5mony-bear1ngr~tntn~al (probably boulangerito)

in a gangue of qtlart~ nnd s1Grite The minoralization was

pDtob anltl of low Brad e overall

The Chlori1e TJodo in ~he north-eoJJt 1)[11( of the Colonel

North area was described by Twclvet1oEH1 ml rrnId ne c8rrying

bands and noduleo of hematite and memillnry I1monita the

nodules containing Dil1er chlorl(1e nncl native silver Some

high gr(l e pat(hes nosyed as hi-gh as 1000 OZB oilver per

81

ton but the average ~Jilver content of the materinl exshy

tracterl was 40 ozs silver per ton

Dumps in the vicinl tV of the vsrioufl Nokingr~ have

been eXHmined for samples afore but most contain only traces

of galena ill ahnle qiL1irtz and siieri tee Jhe only useful

mateltl~ifll for miner1l1ogical examtnation W8S founfJ in the

dumps of ~J01rle sffi1ill workings in what TJolvetreer rnd lacd

(1910 p_118) lleserib(d IMl thH fUrra-may Formr1tion u bull rfhese

workingg arlt~ in tha southern pHrt of the Colonel North area

Hnd Bre situated close to thE Grubb t El tram Twelvetrees and

Viard sta ted that tho vein of ore was about 18 inches in

W-rlth d middot t~at middotmiddotl1middotltnl~it C aomV1~V 1middot1middot1 ~Iith r-JJ-lbullLII J~ t (~~lt Jt JgtJi(~ ~i v VOv af-oltllt ~-dl-iJl~l ~ v E~~T~ 1lJ4t

occurri tl onl~ in spots lrde dCGer pt100 is in accon~~1nce with the samples collected In addition to ephalerite and

galena minor amourrts of boulangeri to tetrahedr1 te bourshy

nord te pyri to nnr1 egthJlcopjrri te were observed in p(11iD J ed

secmiddottionn of the poundpecimerm

1he g~11ena spotstt (P342 34)) are patches of galena

from 1mm up -to 25em in overall width in mas8l~le white

quertz Some ~lp0cimene of quartz are -the h1clred H or chopshy

d tl f) re+xr~ to by nr (J~ tt (11gt10 t - 1qJIg) r-o 11bull iJvmiddot LP tli ) t cmiddottmiddotrl p ~4 ~ +ne

north-etuJt of Taamnnia let ietd attrHmted the svrp angular

impreslJions tn the (lut3rtz to feldspar crystals but it 3IJJGars

l11oly that the im1ressions in this material fror the

Colonnl North 8ea have been CE1USG(1 hy Cl cryst~al1ine Cflfrbshy

onate ]rObtol1l1y sid eri ta which naB siu(~G bean leachefl Ollt

82

~flhe gelena i~3 ric) in inclusions of bou13n~erlte and

inclnsiollS ofte-trchedri te and bOUXtlOl1i te Elre rllao common

I1lC bonlaneri-te occurs as fine needle-l1ke bodies riwging

in length from OOf)2mrn up to O08mm Thena shmv an even

distribution through most of ihe gcllena but are occasionally

conoentratef~ inmiddotto erneI1 pfttches (up to O3mm in width) eonshy

slstillg of cllJBters ofthef-Je tine needles Tetrohedri to is

leGs evenly dist~rHUted and occurs as irregolarly shaped

bodje~3 ran~inf5 in overall w1dth from O01mrn to O075mrn

These t0trahedri te bodies always occur tn the alena but are

freiuently observHd on the borders of sphalerite inclusions

in the galena Bournoni te is present inmiddotthe palcf1m as very

fine bodies COITIWOn and evenly diatr111uted ioP 34 hut less

_ 343common Ifl 1~ bull PleCle bocH-ea clre getlerally roil-like or

round in Bhnpe gltlou~h it ia quj te lihely that many of the

rouni~ hodi(~s are merely eross-secmiddottions of rod-li1H2J bodies

Th 1 - lhrJ 0 tmiddot1Ilt1lt 11 vJr1 f 011 0 (10)1n t Omiddot ()15-m ndv vt~iU-- 1 tA Ij- LJ3 middot~O t4 ~ 1 bull tmiddotv v bull middotLmiddot9 ttmiddotmiddot

tho diameters of the round boriies rnge from O 001mm to

O005rm1 In 12342 SOftie of the bourmmite tnclttsions dnow

) M(lnl~ltmiddot j r middotmiddotymiddot~tnmiddott IF -lj 3J rn-tJ 1middot -Ftl lt~ en(~ ~~ ampi- ~ A - 17- 1_bull ~_ gt l~J ~ bull v tt J v P 1 v~t-l v JIJ (Jr ~~) ~ J Ql bull

Pyrtte is not common in the coarse gf~Jgteila where 11

occurs only ao vcry SIWJll1 (o 01ryn) idiornor(c cr~i8tals

which appear 1~o have hCEm eXtelh3i vely rejh)cel by the gn1ena

P~lrite is 8 lit~middottle morc common ln the sph11erite-rich ore

where it olcurs in tllC1 mCSrlive SphD lerl te as ldiomoIgthic

lYltmiddot1~ (0 Omiddot1rT t r Q O~~l) middot-amiddotr -tIn r 4middot Cl J 1y r )middotmiddotlmiddotcl by~ ~t~ (I)lJgt f~_1 gtt ~ 11 ~lJ1Jc~ llWtA J t-(ci 1-- ~j__ ~Cgtj~

83

the aphalerito

Sphelertte occurs tn tiQ coarse galena nD fJllall nref~S

wldc 1 appear to have boon ClXtOU i v(~ly rp1nced The 3120

of Chost) 1ufLntol1 rtr() y exceeds O1mn The cpecimens

Oof rlltHJve~ ~ln)J)e-vgt S~j P-lt 3444(~) CJ_ - 011110~- ~I ~~~~~~~J~ ~~ _ ) 0ouiflt ( ~ e~11rAly gtJ

of fl)llalelt gt 71th sID11 f3ffiOUn (~) ofu rtz gCH1gUG Jhe

E1p1l~lorj -to 11 modorately dxk tn hnnd BPOC1I1n

Minor nmount~J of Br-Ionl occur l OUg10Ut t1o spht~lertte

DS mloll 1rrcgvJr1rly 11)011 PflliChes t ntrell grenter than

C25mm in overclll width rrhbJ BlI a ap (~nrsto rOl)reemlt

Jncident Toacmnmiddotnt of 1ihe sphalerito

C1H1 COT7~ -j ] a] 0 ~lsrgtY1of- 11 )OJI1 ~middotlmiddotn-q 0-( ~he- JtJJ1u ~ lt) t-v middot l]U - (~-r h~ f I~ ~

SPHiJ erito ClS ex-tremely minute blobs moot of which (IO 10sa

than O0005mmOl in size am1 ~Jhow rnnclom oriontabion Some

minute bleba in thene nrE)rS may be pyrrhoti-be but the fine

naturo prevents procise idClTjfication

84

ASDCll1blape t

of ore bull

minerelsr

Common 13oulangClt-i0 - goJena Gona - sphnleri-te G~lena - tetrahoc1rj to Bournonie - galena Plri to - sjhalerlte

Infra l1ent Boulangeri te - bournonite - galena n01l1nnfJ~eite - gelona - sphalerite Boulangeritc - galena - tctrahedrito ChHlcoPJrrtte - sphnlerite Cklena - pyrito ~~lftn~ ~urit~middot A-~1D~i~middot~_~V_ c -shy JJ t~ - 0L~oC4-j~1 llo G-rltlema - f3pbi~l()ri to - tetrrec1rite

Uue BournoniLe - gDIena - spJolerite Galena -write - sp7Jn1erite - tetrahe(lri~E

f3S

Spray Mine

The rnaln worlring0 of the Spray [)iine are located on the

nor1l~ern slopes of Spray Hill south of manganese Hill and

on the southern side of the Comstock trern formation

The host rocks of the ore-bodies are quartzi toe ond

slflOB of the Oonahllartzite and Slate (BliElBstt 1962)

A(cording to WaIler (19(4) the Main Lode cont1nued north

and entered rocks which Bllssett (1962) oonsiderfJ to be

prohably pori oftihG Cambri9n Crimson Creek Formation

~111er oboe ved thot the lode was produotive onl in the

Jreoombrlan quartzite and sl0te as the workings in the

Carnbrian rockswere shallow nnlllhe ore completely oxidized

Detailed descriptions of the workings were given by

WaIler (19(14) and fiwelvetrels and Ward (1910) A total of

four ore-bodies were repormiddotted all of which were parnllel

strik ng NNW and steeply tlipfing The rost important lodes

ore No 1 (Main) ftnd No 3 (Gurnj_Els) Nos 2 nnd 4 were of

11ttle economic importance Valler describ(~d VIC lodcs as

well doff ned fismre formmiddotti one

The ore was reported 10 comliot of g81enand a leodshy

antiJrony SUlp11ide (re erred to as jarnesoni te) with pfrie

in a gangne of ioerimiddotto md quortz AccoTf1inglo WaIler one

of the richest ore shoots discovHred in the Zeehatl ltliatrict

oocurrsc1 in the l1inin Lode in Page and [loDermottts Jorkings

The ore in thiltl shoot renched a maximum width of 16 feet ana

the leJlgl~h of ~he shoot was reported to be 400 feet WalleI

86

esttmated DppIoxirrltrt l )ly two-tl-drde of ~Ilc~ ore to be galena

Ri~ports in1icate thaL the silver content of th ore

vlrjed connider~tblyhr()llghout the mine but =Lt woulcl apreac

from th~~ avatlllble fi lturea that tho average aUvcr con L(mt

of the ore Nas of the order of 100 ozeper ton TwelvetrHGc

and WeIrd nocl a cnrreltion between high BDver ana imtimony

content8 in the ore and Twelvetrees (1901a) refcrted that

some rich untimonhtl-leail ore neayed ov(~r ~) ODe) ozs of

silver ler ton in-ITer (op ci t) staterl thattho ntimony

content of ho ore WGf-J higher in upfer levels rtnc1 that

psrtte increq~ec1 in abUDrlmce at lOer levels

ThepreS6flce of small Cluntt tje~1 of argentitc flsfjociaterl

ttl _ 1 l~rjteI

CO-~ ~ revmiddotr~middotJ1J brt1Pemiddott+e~gtJ (1910) t-lmiddotJ~eClmnI) ~ imiddotr lmiddoto1 lmiddotJtt ~1Jmiddot ~l ~~O

(X235P52) tnlhe T(sm9nian Museum colloction confirms this

recurt This ~-)pecimen which Hl originc1lly in the W 1

Pettord col1ection contnins patches of rlrgcntite up to 3cm

x 2cm occurring ~lS thin films on ~ddlrt Ca 111088 of galena

covell~lte and lwrttC dt1iin lihe arge1titc flere noted in

polished section

Pett~erll (op cit p9 ) Chl0 recoriled the presence of

mltive antimony nil thin rillfJ~tjng patches about 811 inch

ln (Hameter irnplantec1 on H si l1Coovs matr-Ix tt T~jf) ikntt shy

fic~~ljon mal be ttnrl-iable as a sicoimcn from PettorO to col-

lectiton (now eclmen no Xf17 in -thCl lHDInnian V)USCWfi Col1ecshy

h nqt l n(lI 1 0 U ~ -ion)J lltbi1 rlt) J __ ~ J ~ IPJ11 -l4V(J 41~14monyVL Unmiddotmiddotmiddotbmiddotnnw t~~~Jbn9

1dmtified flO EJtHmite In Ihe abtHmce of any reports of

n bullJ v Q timiddoton1 dgtro 711 () rgtlfj bullbullf _ in +lC~I 14O~~J ~han bull no rnV(J

i

~~lj I~l )~ -1 bull 10l1 L tle~Jc ibull it

e lik-]middot lllt 1111 Cl-ITIOYl i ~ro ~t ( r poi cy fJ 1 - J IJdJP ~y t) no

87

Ietterd (opeit) also liste( small amounts of the secondary

minerals ke1mesi te and atjblconite in the Spray workingth

The gOS3ftfi outcrop of Gurniemiddot s Lode at trw tcrp of the

Spray Hill wao reported h~ ~rw)lvetrees and Nard (1910) to

be rich in naltive silver and silver chlor14n

Sr9cimens of ore in thc) tt1rlSmtln1anMuseum collectt on

fnd rtt9tertal collected from the tmrfaee dumps near the

lJorkj ngs were found to contain boulangerite galcma pyri te

and 9phalerite atl the-major metallic corJst1tttents in a

gIFtUg119 of aideri teurol Imd (lUJ)rtz Minor cOflsti tuents irlentified

in l)olisrH~dsectjonB were arsenopyrite tetlahedrl ta bourshy

nordta ehale~pyrite rnd pyrrl1oti ie T1H pIoportions of

the v~ril)lJs cOlUrtituents nhow 0 cOrlsideehle vUriation

between flpec1mens

Stil1wel1 (1947) (lesoribedsome npecimens from the

S~ray Mtue andtlHSlre i~J good agreement between Stil1well 8

deeeri pt1ons and the Beeimens exrunined in this investigation

All of the rninera1a and feaures de~lcrfbed by Stil1wel1 hOva

been observed and s(ma~ ~~dditiol1alminen~la (bournonlte and

pyrrhotite) have been noted Sphalerimiddotte is considerably

more aburldant in some of tihase specimenathan 1n tllOse

described by SIil1wel1

Boulan~erita wlieh istho most abundarrt ore rrdneral in

the sulle of opecif)en8 examined replesena t~je Inineral reshy

farred to Q8 jilmcsonite in many eerljer nccountg of the

geology d~ thn Zeehnn area Theproperties and identifictltion

ObL ~l ho~lQn()Iri~ ~~ lttT 11ltigt~crlj(bull Lsewneret ( PlO1011) orne~t L ( I ~~ S

88

specimens of ore (etg 1202) consist essentlally of rrtaseive

boulallgi~rite with minor aliOunts of tetrnhedrito gmlema

bournonitat pyrite RllG arsenopri to ~prescnt as inclu8l ona

INittdn th~~ boulangegtrite fIetraheltiri te is fl comrlOfl assooshy

late of the llOulan eri te in these specimens and in ono

sarrlple (1 50) constitutes apIuoximately 10 of the ore The

size of the tmlivilu81 areas of ter-rahedrite within the

boulangenite rftLngf from very Ftne up to O 25mrn 2l1f1 the

tlLxturul rc~lBiionahip suggGSts thst ie1rahedrite hrupound undeI shy

ponepartial replacement by boulrmgertte frhe fremiddot~uenoy of

middotthe fU38ernblJge bOl)I~ngerite-tetrnlHedrito io in Iteeplng Iidth

the ohservtation of tltel vetrees and Ward (1910) that h1gh

silver valuog were often related to hilth antimollY content

in ore from the SPlI~y iine

ECHJI~~lnged ta alf3o occurs throughout much 01 the 813erite

gengue SJJmiddot fine rod-li ke (md nasdle-11ke crys tal~ (eg P 181)

lt ~Wimiddottlt the longthe of ihe individual crystals rarely exceeding

O05mm fhese fin(~ cryfdals ar~ common in sm~111 clusters

lEUld velnleta and ()cctudcmally merge to form areas consi~3ting

of mFUfH~S of thfHH3 ftne ftroa~Jf and nnEHtl1es u (Plate ~59No 1)

fli(J vdltlth of the individual mamdve HreaEl reoches a mflximum

OT evE~ral centimetres (Si P 00)

GHlena is leSfl atl11ndantmiddot than boult3ngerite in tlH~se

spocimens and 2H rsrely observed lfUihout some aHwciated

k 1 J f 1 ( on 1(~)t )Ut)Vd angen e E~ argor CUeuroUJS 0 ga~3Fl e J J) ~re

up to sEnreral ce1ttmetres in overill l11i dth I~nd are surrounded

by gangnet nnd cont]in 1~j_ne inclusions of boulHngeri ta

- -------------------------------- ------

89shy

tetr51hedri te sphalerita pyrl te and arsenopyri te Grdena

~lao oonurs ~l8 freqlltmt fine (O01-007mm) 1ncluslons

of irregular outline within 1he maas1ve houlangeri tee

130urnoni te focrns sm11 irrerularly-shaped pt~tehm

within the massive boulangarite the overall width ()f these

inclnsions ranging from O025mrn ul) to O )rnm A small

amount of hournonite W~JS also observed as nstrrow veinlete

(oOOmm to O015mm jn v1dth) in Sl)hsJeri te and pyr1 te

(P 196) bull Cbaleopyri t( t tertrahe(1rite tmd galena are Jgtresent

pound$ inelusiona within the bournonite in these veinlemiddotts

Pllite and arsenopyri te are Invjuiahly associated hut

in VtiriOttS prop()rtions and occur as idiomorrhie and 6ubidshy

iomorphic crYHtala di flseminated through the other sLlphides

and tllr~ gnngtte Masavs areas up 10 several centimetres in

i1idth 8re alao resent (eg middotP H39 192) in ~ome speclmens

In tle[H~ l3reas pyri to is generally the lJl()re alnlndarrt of the

two rninerals but occasionally arEHt101)yrito ia the matn conshy

sti tuantThe in(1jviduol erystnlG of each mineral range from

O01rmn up to O 5r1l Both minereh1 have apparerltly undershy

one ext~cnsive replacement by boulatlgerite gaJsna tetrashy

hedrite nrdl bournQnite and partinl replacernent by sphaJerif(2)o

J3cmlarlgeri te temiddottrahettrimiddotte and gal~~na occupy trrtorsti tial

areas in the m~lSt3ive pyr1te and arsenopyrite liltla also occur

as fine inclusionn and veLnle~s withinthese minerals

middot~hltlari+ll Cl nblimiddotd middot in ~Omiddot1middotp -)ir1lt~nr1 (Q 1) 18middot 191)- i~L~gt ~ bull ~ v JJ c1 JL) c~tj J 71 (1 l-~~ ~v bullt~~t~ ~~)t t le

but is absent or rare in others In hand specimen te sJihalshy

arife ia moderately dark

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 5: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

J7

lmiddotmiddot~o-Jq~td) Cv~91 ~~ __

04It-JILl

0middotmiddotv iAl~ 1 ~H IJ~~~111I F bull I

eon10n~ Dou [iInpor1 tiC - emiddot~Jonc1 1111 ~l ob ~ u~~ ~~( tjt~lri- ~J

Uournoni 0 - nnJena

1 nfr(VpHmt rSH~olW11 to- hOtlY It1(or-j ~e - middot1 (y111 lt~~o~~1r~ i + f 1(middotmiddot~- ~ ~) iJ ~i ftJ l~~ lt r

middotI~)middotl-in~middotmiddot ~ ~ _ 1()lP1f~ j~1gta~ 1 )_bull L _(~ij ~ iQ o~ f_Jrt ~ ~

rtoul~)n erie - r)ournon1te -nJnn middotllQ~)lnnfnito - f~l((~ - to middotrnl~odr~I to no~llongertte - P) r~te

Hournoni fe - EwrJ to Jknlrnrm1 o -ratrn~1(i1rto

Cho10oi)ymiddotrit-f) - fF~~~nl~rmiddotte bull f J ~ 1 shy ~vmiddot

G lcna - mnrCt~~1tte

(~~iLontl - r T1in~ cri to I nl~nltI f )1 t 4 I + ~lt~ 0 1~ ~Lr-r~ j - 91tOiJ ~JJJA lIJt Vl ~_ Imiddot_~J ~~J J~ IJ1iJ

(kl1~na - t(ftrc~lndJt 0 ry1t 0 - fJph0~crte

11101 n~)ln~~nrdtm - r~pr~ ~lo cJ J 0 __ bully

~_ ~~ 1(n I r~ r ) J~ ~l r~~l1 t~ bull - rru(~yrj te

79

Houth Nueena ronpect lltO

rrhe 1Norlclngn kn(Jwn os the South NVbeena Prospect are

~~~ 1middotmiddotmiddot(1 rox4 rn1 Cll J~ rn- J It bull ou+1 of -ll( 11ut)eeYl- JUfilJ t ~dJ(rUO t-tlj J _ - rt~~ lt 1) 1-- J _~O ~ ~J L Ut 3 rclJ d 11

Ill) rkt ngs

1 urrtF b c eVlint-1on 1 C1ilri -iJ i-- ( lclo1) 1 middot~middot~101middottIJ1middot~v ~ v t5 r l0 4 ~ ) t C t _~

(f Tlo14nsbullbullbull A t middot J olt~ la~I C (I COVr(0 ~~ lFnonltloi1~amp rL lJ -le in tIOmiddotKmiddotmiddotIUmiddotSI - (~)0~ - (1 t L) ~ I

middotnmiddotfmiddotlr~t Q 1n1nnel ( ~ _v ) 10 (J4middot ~lvemiddottmiddotmiddotoe1- rl~~~-(1 middotqmiddotmiddot1 1910) bull_ 0 1 (t~11r JtJ t1 bull _ bullbull t~~) _

Tho lodc~ cont~1in(~(1 a BElFtm of galeml from one to two inched

in thic1mes8 8oood1oC to iJaIler nnd assu7S 0 tbEl galemshy

middotvcgt ~middotltmiddotmiddot~lto If 7v emiddotn (l -(j 1(00 ~ver per middottonts v 11 c ~Ow l _ vv J tlLmiddot J 4JO ~ ~l f No rninernlized material is now prEwent in tho dumps

ne8Itlw worldns

80

Colonel north Minos I _ iiIl i bull bull

11 1 tmiddot I (gt- ~11 1 1 ~ b ~middotiir 0Ibull ~ lt Cf 0 viean ullC Ujjray ne nt vlO uU OU) 11 n

incluc1es nuruorou8 rWJDll vorkinCG which wore on 10[1800 hold

a~~ varieruJ times 1Jy te Colonel North TlneCl nwl Itilway

Co bull N J and nre norr1nJl~r reftirre(~ to a8 tho Colonel North

j1lnes These worln[~G in~lud( the Colonel North hnft the

Vtctorltl - ZeohcH1 hnfmiddott the Silver POWTI lt1l1it the Silver

Lnc ~r1middotitmiddot ~ntl tmiddotmiddotc t1lvI Vjvo ~rorltinc TlIO (1 b~middotmiddotSmiddotlrina ) u 11 bullmiddot ~ l bull -_ ___ v Ci (tt V H lo-J 1- 7Jo A kJ Q furtIer BOUt waG -Iso operated by hiB Company aml I[U3 rcshy

farred to in some ropor0s ~JD th~ Colonel North rfine

Bljssott (1962) has r1escribod ~h0 country ro~ks in the

Colonel North iaren a~l IIfolltled nnd 4io urbcc1 ohnle ilate and

nn] e 11l-rt7ite rl (1 onn Kh~ ch ~e et 0(gt 1- ( () 011 gt n Ttff~- -4- JJ 1 iJI middot~otJ ( I~L ~~ (~ ~J~middot-1~ )_ lJi~ ~~ fjCil~ lft

z1t 0 lt1l1(1 SIft1gt0 bull

The mineralogy of th( ore found in tIJo v~~riOuH worlrin(o

nppe1ro to have been mVJOnt1r111y uniform 1)escription8 by

m~lemiddotlv~middotlmiddot1el~u ~ rd Fnll~a (19middotmiddot10) inaiU - 1-1+c~(b Cltgtlrgtn~wnl--t- C~IV 0J) C LA middot 1gt(1 thi~ ~IJIIj

matn rletallic rn1n rrDl vllth EJr1811 amounts ofyri e sphalshy

orj(e Gnd an at1t5mony-bear1ngr~tntn~al (probably boulangerito)

in a gangue of qtlart~ nnd s1Grite The minoralization was

pDtob anltl of low Brad e overall

The Chlori1e TJodo in ~he north-eoJJt 1)[11( of the Colonel

North area was described by Twclvet1oEH1 ml rrnId ne c8rrying

bands and noduleo of hematite and memillnry I1monita the

nodules containing Dil1er chlorl(1e nncl native silver Some

high gr(l e pat(hes nosyed as hi-gh as 1000 OZB oilver per

81

ton but the average ~Jilver content of the materinl exshy

tracterl was 40 ozs silver per ton

Dumps in the vicinl tV of the vsrioufl Nokingr~ have

been eXHmined for samples afore but most contain only traces

of galena ill ahnle qiL1irtz and siieri tee Jhe only useful

mateltl~ifll for miner1l1ogical examtnation W8S founfJ in the

dumps of ~J01rle sffi1ill workings in what TJolvetreer rnd lacd

(1910 p_118) lleserib(d IMl thH fUrra-may Formr1tion u bull rfhese

workingg arlt~ in tha southern pHrt of the Colonel North area

Hnd Bre situated close to thE Grubb t El tram Twelvetrees and

Viard sta ted that tho vein of ore was about 18 inches in

W-rlth d middot t~at middotmiddotl1middotltnl~it C aomV1~V 1middot1middot1 ~Iith r-JJ-lbullLII J~ t (~~lt Jt JgtJi(~ ~i v VOv af-oltllt ~-dl-iJl~l ~ v E~~T~ 1lJ4t

occurri tl onl~ in spots lrde dCGer pt100 is in accon~~1nce with the samples collected In addition to ephalerite and

galena minor amourrts of boulangeri to tetrahedr1 te bourshy

nord te pyri to nnr1 egthJlcopjrri te were observed in p(11iD J ed

secmiddottionn of the poundpecimerm

1he g~11ena spotstt (P342 34)) are patches of galena

from 1mm up -to 25em in overall width in mas8l~le white

quertz Some ~lp0cimene of quartz are -the h1clred H or chopshy

d tl f) re+xr~ to by nr (J~ tt (11gt10 t - 1qJIg) r-o 11bull iJvmiddot LP tli ) t cmiddottmiddotrl p ~4 ~ +ne

north-etuJt of Taamnnia let ietd attrHmted the svrp angular

impreslJions tn the (lut3rtz to feldspar crystals but it 3IJJGars

l11oly that the im1ressions in this material fror the

Colonnl North 8ea have been CE1USG(1 hy Cl cryst~al1ine Cflfrbshy

onate ]rObtol1l1y sid eri ta which naB siu(~G bean leachefl Ollt

82

~flhe gelena i~3 ric) in inclusions of bou13n~erlte and

inclnsiollS ofte-trchedri te and bOUXtlOl1i te Elre rllao common

I1lC bonlaneri-te occurs as fine needle-l1ke bodies riwging

in length from OOf)2mrn up to O08mm Thena shmv an even

distribution through most of ihe gcllena but are occasionally

conoentratef~ inmiddotto erneI1 pfttches (up to O3mm in width) eonshy

slstillg of cllJBters ofthef-Je tine needles Tetrohedri to is

leGs evenly dist~rHUted and occurs as irregolarly shaped

bodje~3 ran~inf5 in overall w1dth from O01mrn to O075mrn

These t0trahedri te bodies always occur tn the alena but are

freiuently observHd on the borders of sphalerite inclusions

in the galena Bournoni te is present inmiddotthe palcf1m as very

fine bodies COITIWOn and evenly diatr111uted ioP 34 hut less

_ 343common Ifl 1~ bull PleCle bocH-ea clre getlerally roil-like or

round in Bhnpe gltlou~h it ia quj te lihely that many of the

rouni~ hodi(~s are merely eross-secmiddottions of rod-li1H2J bodies

Th 1 - lhrJ 0 tmiddot1Ilt1lt 11 vJr1 f 011 0 (10)1n t Omiddot ()15-m ndv vt~iU-- 1 tA Ij- LJ3 middot~O t4 ~ 1 bull tmiddotv v bull middotLmiddot9 ttmiddotmiddot

tho diameters of the round boriies rnge from O 001mm to

O005rm1 In 12342 SOftie of the bourmmite tnclttsions dnow

) M(lnl~ltmiddot j r middotmiddotymiddot~tnmiddott IF -lj 3J rn-tJ 1middot -Ftl lt~ en(~ ~~ ampi- ~ A - 17- 1_bull ~_ gt l~J ~ bull v tt J v P 1 v~t-l v JIJ (Jr ~~) ~ J Ql bull

Pyrtte is not common in the coarse gf~Jgteila where 11

occurs only ao vcry SIWJll1 (o 01ryn) idiornor(c cr~i8tals

which appear 1~o have hCEm eXtelh3i vely rejh)cel by the gn1ena

P~lrite is 8 lit~middottle morc common ln the sph11erite-rich ore

where it olcurs in tllC1 mCSrlive SphD lerl te as ldiomoIgthic

lYltmiddot1~ (0 Omiddot1rT t r Q O~~l) middot-amiddotr -tIn r 4middot Cl J 1y r )middotmiddotlmiddotcl by~ ~t~ (I)lJgt f~_1 gtt ~ 11 ~lJ1Jc~ llWtA J t-(ci 1-- ~j__ ~Cgtj~

83

the aphalerito

Sphelertte occurs tn tiQ coarse galena nD fJllall nref~S

wldc 1 appear to have boon ClXtOU i v(~ly rp1nced The 3120

of Chost) 1ufLntol1 rtr() y exceeds O1mn The cpecimens

Oof rlltHJve~ ~ln)J)e-vgt S~j P-lt 3444(~) CJ_ - 011110~- ~I ~~~~~~~J~ ~~ _ ) 0ouiflt ( ~ e~11rAly gtJ

of fl)llalelt gt 71th sID11 f3ffiOUn (~) ofu rtz gCH1gUG Jhe

E1p1l~lorj -to 11 modorately dxk tn hnnd BPOC1I1n

Minor nmount~J of Br-Ionl occur l OUg10Ut t1o spht~lertte

DS mloll 1rrcgvJr1rly 11)011 PflliChes t ntrell grenter than

C25mm in overclll width rrhbJ BlI a ap (~nrsto rOl)reemlt

Jncident Toacmnmiddotnt of 1ihe sphalerito

C1H1 COT7~ -j ] a] 0 ~lsrgtY1of- 11 )OJI1 ~middotlmiddotn-q 0-( ~he- JtJJ1u ~ lt) t-v middot l]U - (~-r h~ f I~ ~

SPHiJ erito ClS ex-tremely minute blobs moot of which (IO 10sa

than O0005mmOl in size am1 ~Jhow rnnclom oriontabion Some

minute bleba in thene nrE)rS may be pyrrhoti-be but the fine

naturo prevents procise idClTjfication

84

ASDCll1blape t

of ore bull

minerelsr

Common 13oulangClt-i0 - goJena Gona - sphnleri-te G~lena - tetrahoc1rj to Bournonie - galena Plri to - sjhalerlte

Infra l1ent Boulangeri te - bournonite - galena n01l1nnfJ~eite - gelona - sphalerite Boulangeritc - galena - tctrahedrito ChHlcoPJrrtte - sphnlerite Cklena - pyrito ~~lftn~ ~urit~middot A-~1D~i~middot~_~V_ c -shy JJ t~ - 0L~oC4-j~1 llo G-rltlema - f3pbi~l()ri to - tetrrec1rite

Uue BournoniLe - gDIena - spJolerite Galena -write - sp7Jn1erite - tetrahe(lri~E

f3S

Spray Mine

The rnaln worlring0 of the Spray [)iine are located on the

nor1l~ern slopes of Spray Hill south of manganese Hill and

on the southern side of the Comstock trern formation

The host rocks of the ore-bodies are quartzi toe ond

slflOB of the Oonahllartzite and Slate (BliElBstt 1962)

A(cording to WaIler (19(4) the Main Lode cont1nued north

and entered rocks which Bllssett (1962) oonsiderfJ to be

prohably pori oftihG Cambri9n Crimson Creek Formation

~111er oboe ved thot the lode was produotive onl in the

Jreoombrlan quartzite and sl0te as the workings in the

Carnbrian rockswere shallow nnlllhe ore completely oxidized

Detailed descriptions of the workings were given by

WaIler (19(14) and fiwelvetrels and Ward (1910) A total of

four ore-bodies were repormiddotted all of which were parnllel

strik ng NNW and steeply tlipfing The rost important lodes

ore No 1 (Main) ftnd No 3 (Gurnj_Els) Nos 2 nnd 4 were of

11ttle economic importance Valler describ(~d VIC lodcs as

well doff ned fismre formmiddotti one

The ore was reported 10 comliot of g81enand a leodshy

antiJrony SUlp11ide (re erred to as jarnesoni te) with pfrie

in a gangne of ioerimiddotto md quortz AccoTf1inglo WaIler one

of the richest ore shoots discovHred in the Zeehatl ltliatrict

oocurrsc1 in the l1inin Lode in Page and [loDermottts Jorkings

The ore in thiltl shoot renched a maximum width of 16 feet ana

the leJlgl~h of ~he shoot was reported to be 400 feet WalleI

86

esttmated DppIoxirrltrt l )ly two-tl-drde of ~Ilc~ ore to be galena

Ri~ports in1icate thaL the silver content of th ore

vlrjed connider~tblyhr()llghout the mine but =Lt woulcl apreac

from th~~ avatlllble fi lturea that tho average aUvcr con L(mt

of the ore Nas of the order of 100 ozeper ton TwelvetrHGc

and WeIrd nocl a cnrreltion between high BDver ana imtimony

content8 in the ore and Twelvetrees (1901a) refcrted that

some rich untimonhtl-leail ore neayed ov(~r ~) ODe) ozs of

silver ler ton in-ITer (op ci t) staterl thattho ntimony

content of ho ore WGf-J higher in upfer levels rtnc1 that

psrtte increq~ec1 in abUDrlmce at lOer levels

ThepreS6flce of small Cluntt tje~1 of argentitc flsfjociaterl

ttl _ 1 l~rjteI

CO-~ ~ revmiddotr~middotJ1J brt1Pemiddott+e~gtJ (1910) t-lmiddotJ~eClmnI) ~ imiddotr lmiddoto1 lmiddotJtt ~1Jmiddot ~l ~~O

(X235P52) tnlhe T(sm9nian Museum colloction confirms this

recurt This ~-)pecimen which Hl originc1lly in the W 1

Pettord col1ection contnins patches of rlrgcntite up to 3cm

x 2cm occurring ~lS thin films on ~ddlrt Ca 111088 of galena

covell~lte and lwrttC dt1iin lihe arge1titc flere noted in

polished section

Pett~erll (op cit p9 ) Chl0 recoriled the presence of

mltive antimony nil thin rillfJ~tjng patches about 811 inch

ln (Hameter irnplantec1 on H si l1Coovs matr-Ix tt T~jf) ikntt shy

fic~~ljon mal be ttnrl-iable as a sicoimcn from PettorO to col-

lectiton (now eclmen no Xf17 in -thCl lHDInnian V)USCWfi Col1ecshy

h nqt l n(lI 1 0 U ~ -ion)J lltbi1 rlt) J __ ~ J ~ IPJ11 -l4V(J 41~14monyVL Unmiddotmiddotmiddotbmiddotnnw t~~~Jbn9

1dmtified flO EJtHmite In Ihe abtHmce of any reports of

n bullJ v Q timiddoton1 dgtro 711 () rgtlfj bullbullf _ in +lC~I 14O~~J ~han bull no rnV(J

i

~~lj I~l )~ -1 bull 10l1 L tle~Jc ibull it

e lik-]middot lllt 1111 Cl-ITIOYl i ~ro ~t ( r poi cy fJ 1 - J IJdJP ~y t) no

87

Ietterd (opeit) also liste( small amounts of the secondary

minerals ke1mesi te and atjblconite in the Spray workingth

The gOS3ftfi outcrop of Gurniemiddot s Lode at trw tcrp of the

Spray Hill wao reported h~ ~rw)lvetrees and Nard (1910) to

be rich in naltive silver and silver chlor14n

Sr9cimens of ore in thc) tt1rlSmtln1anMuseum collectt on

fnd rtt9tertal collected from the tmrfaee dumps near the

lJorkj ngs were found to contain boulangerite galcma pyri te

and 9phalerite atl the-major metallic corJst1tttents in a

gIFtUg119 of aideri teurol Imd (lUJ)rtz Minor cOflsti tuents irlentified

in l)olisrH~dsectjonB were arsenopyrite tetlahedrl ta bourshy

nordta ehale~pyrite rnd pyrrl1oti ie T1H pIoportions of

the v~ril)lJs cOlUrtituents nhow 0 cOrlsideehle vUriation

between flpec1mens

Stil1wel1 (1947) (lesoribedsome npecimens from the

S~ray Mtue andtlHSlre i~J good agreement between Stil1well 8

deeeri pt1ons and the Beeimens exrunined in this investigation

All of the rninera1a and feaures de~lcrfbed by Stil1wel1 hOva

been observed and s(ma~ ~~dditiol1alminen~la (bournonlte and

pyrrhotite) have been noted Sphalerimiddotte is considerably

more aburldant in some of tihase specimenathan 1n tllOse

described by SIil1wel1

Boulan~erita wlieh istho most abundarrt ore rrdneral in

the sulle of opecif)en8 examined replesena t~je Inineral reshy

farred to Q8 jilmcsonite in many eerljer nccountg of the

geology d~ thn Zeehnn area Theproperties and identifictltion

ObL ~l ho~lQn()Iri~ ~~ lttT 11ltigt~crlj(bull Lsewneret ( PlO1011) orne~t L ( I ~~ S

88

specimens of ore (etg 1202) consist essentlally of rrtaseive

boulallgi~rite with minor aliOunts of tetrnhedrito gmlema

bournonitat pyrite RllG arsenopri to ~prescnt as inclu8l ona

INittdn th~~ boulangegtrite fIetraheltiri te is fl comrlOfl assooshy

late of the llOulan eri te in these specimens and in ono

sarrlple (1 50) constitutes apIuoximately 10 of the ore The

size of the tmlivilu81 areas of ter-rahedrite within the

boulangenite rftLngf from very Ftne up to O 25mrn 2l1f1 the

tlLxturul rc~lBiionahip suggGSts thst ie1rahedrite hrupound undeI shy

ponepartial replacement by boulrmgertte frhe fremiddot~uenoy of

middotthe fU38ernblJge bOl)I~ngerite-tetrnlHedrito io in Iteeplng Iidth

the ohservtation of tltel vetrees and Ward (1910) that h1gh

silver valuog were often related to hilth antimollY content

in ore from the SPlI~y iine

ECHJI~~lnged ta alf3o occurs throughout much 01 the 813erite

gengue SJJmiddot fine rod-li ke (md nasdle-11ke crys tal~ (eg P 181)

lt ~Wimiddottlt the longthe of ihe individual crystals rarely exceeding

O05mm fhese fin(~ cryfdals ar~ common in sm~111 clusters

lEUld velnleta and ()cctudcmally merge to form areas consi~3ting

of mFUfH~S of thfHH3 ftne ftroa~Jf and nnEHtl1es u (Plate ~59No 1)

fli(J vdltlth of the individual mamdve HreaEl reoches a mflximum

OT evE~ral centimetres (Si P 00)

GHlena is leSfl atl11ndantmiddot than boult3ngerite in tlH~se

spocimens and 2H rsrely observed lfUihout some aHwciated

k 1 J f 1 ( on 1(~)t )Ut)Vd angen e E~ argor CUeuroUJS 0 ga~3Fl e J J) ~re

up to sEnreral ce1ttmetres in overill l11i dth I~nd are surrounded

by gangnet nnd cont]in 1~j_ne inclusions of boulHngeri ta

- -------------------------------- ------

89shy

tetr51hedri te sphalerita pyrl te and arsenopyri te Grdena

~lao oonurs ~l8 freqlltmt fine (O01-007mm) 1ncluslons

of irregular outline within 1he maas1ve houlangeri tee

130urnoni te focrns sm11 irrerularly-shaped pt~tehm

within the massive boulangarite the overall width ()f these

inclnsions ranging from O025mrn ul) to O )rnm A small

amount of hournonite W~JS also observed as nstrrow veinlete

(oOOmm to O015mm jn v1dth) in Sl)hsJeri te and pyr1 te

(P 196) bull Cbaleopyri t( t tertrahe(1rite tmd galena are Jgtresent

pound$ inelusiona within the bournonite in these veinlemiddotts

Pllite and arsenopyri te are Invjuiahly associated hut

in VtiriOttS prop()rtions and occur as idiomorrhie and 6ubidshy

iomorphic crYHtala di flseminated through the other sLlphides

and tllr~ gnngtte Masavs areas up 10 several centimetres in

i1idth 8re alao resent (eg middotP H39 192) in ~ome speclmens

In tle[H~ l3reas pyri to is generally the lJl()re alnlndarrt of the

two rninerals but occasionally arEHt101)yrito ia the matn conshy

sti tuantThe in(1jviduol erystnlG of each mineral range from

O01rmn up to O 5r1l Both minereh1 have apparerltly undershy

one ext~cnsive replacement by boulatlgerite gaJsna tetrashy

hedrite nrdl bournQnite and partinl replacernent by sphaJerif(2)o

J3cmlarlgeri te temiddottrahettrimiddotte and gal~~na occupy trrtorsti tial

areas in the m~lSt3ive pyr1te and arsenopyrite liltla also occur

as fine inclusionn and veLnle~s withinthese minerals

middot~hltlari+ll Cl nblimiddotd middot in ~Omiddot1middotp -)ir1lt~nr1 (Q 1) 18middot 191)- i~L~gt ~ bull ~ v JJ c1 JL) c~tj J 71 (1 l-~~ ~v bullt~~t~ ~~)t t le

but is absent or rare in others In hand specimen te sJihalshy

arife ia moderately dark

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 6: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

79

Houth Nueena ronpect lltO

rrhe 1Norlclngn kn(Jwn os the South NVbeena Prospect are

~~~ 1middotmiddotmiddot(1 rox4 rn1 Cll J~ rn- J It bull ou+1 of -ll( 11ut)eeYl- JUfilJ t ~dJ(rUO t-tlj J _ - rt~~ lt 1) 1-- J _~O ~ ~J L Ut 3 rclJ d 11

Ill) rkt ngs

1 urrtF b c eVlint-1on 1 C1ilri -iJ i-- ( lclo1) 1 middot~middot~101middottIJ1middot~v ~ v t5 r l0 4 ~ ) t C t _~

(f Tlo14nsbullbullbull A t middot J olt~ la~I C (I COVr(0 ~~ lFnonltloi1~amp rL lJ -le in tIOmiddotKmiddotmiddotIUmiddotSI - (~)0~ - (1 t L) ~ I

middotnmiddotfmiddotlr~t Q 1n1nnel ( ~ _v ) 10 (J4middot ~lvemiddottmiddotmiddotoe1- rl~~~-(1 middotqmiddotmiddot1 1910) bull_ 0 1 (t~11r JtJ t1 bull _ bullbull t~~) _

Tho lodc~ cont~1in(~(1 a BElFtm of galeml from one to two inched

in thic1mes8 8oood1oC to iJaIler nnd assu7S 0 tbEl galemshy

middotvcgt ~middotltmiddotmiddot~lto If 7v emiddotn (l -(j 1(00 ~ver per middottonts v 11 c ~Ow l _ vv J tlLmiddot J 4JO ~ ~l f No rninernlized material is now prEwent in tho dumps

ne8Itlw worldns

80

Colonel north Minos I _ iiIl i bull bull

11 1 tmiddot I (gt- ~11 1 1 ~ b ~middotiir 0Ibull ~ lt Cf 0 viean ullC Ujjray ne nt vlO uU OU) 11 n

incluc1es nuruorou8 rWJDll vorkinCG which wore on 10[1800 hold

a~~ varieruJ times 1Jy te Colonel North TlneCl nwl Itilway

Co bull N J and nre norr1nJl~r reftirre(~ to a8 tho Colonel North

j1lnes These worln[~G in~lud( the Colonel North hnft the

Vtctorltl - ZeohcH1 hnfmiddott the Silver POWTI lt1l1it the Silver

Lnc ~r1middotitmiddot ~ntl tmiddotmiddotc t1lvI Vjvo ~rorltinc TlIO (1 b~middotmiddotSmiddotlrina ) u 11 bullmiddot ~ l bull -_ ___ v Ci (tt V H lo-J 1- 7Jo A kJ Q furtIer BOUt waG -Iso operated by hiB Company aml I[U3 rcshy

farred to in some ropor0s ~JD th~ Colonel North rfine

Bljssott (1962) has r1escribod ~h0 country ro~ks in the

Colonel North iaren a~l IIfolltled nnd 4io urbcc1 ohnle ilate and

nn] e 11l-rt7ite rl (1 onn Kh~ ch ~e et 0(gt 1- ( () 011 gt n Ttff~- -4- JJ 1 iJI middot~otJ ( I~L ~~ (~ ~J~middot-1~ )_ lJi~ ~~ fjCil~ lft

z1t 0 lt1l1(1 SIft1gt0 bull

The mineralogy of th( ore found in tIJo v~~riOuH worlrin(o

nppe1ro to have been mVJOnt1r111y uniform 1)escription8 by

m~lemiddotlv~middotlmiddot1el~u ~ rd Fnll~a (19middotmiddot10) inaiU - 1-1+c~(b Cltgtlrgtn~wnl--t- C~IV 0J) C LA middot 1gt(1 thi~ ~IJIIj

matn rletallic rn1n rrDl vllth EJr1811 amounts ofyri e sphalshy

orj(e Gnd an at1t5mony-bear1ngr~tntn~al (probably boulangerito)

in a gangue of qtlart~ nnd s1Grite The minoralization was

pDtob anltl of low Brad e overall

The Chlori1e TJodo in ~he north-eoJJt 1)[11( of the Colonel

North area was described by Twclvet1oEH1 ml rrnId ne c8rrying

bands and noduleo of hematite and memillnry I1monita the

nodules containing Dil1er chlorl(1e nncl native silver Some

high gr(l e pat(hes nosyed as hi-gh as 1000 OZB oilver per

81

ton but the average ~Jilver content of the materinl exshy

tracterl was 40 ozs silver per ton

Dumps in the vicinl tV of the vsrioufl Nokingr~ have

been eXHmined for samples afore but most contain only traces

of galena ill ahnle qiL1irtz and siieri tee Jhe only useful

mateltl~ifll for miner1l1ogical examtnation W8S founfJ in the

dumps of ~J01rle sffi1ill workings in what TJolvetreer rnd lacd

(1910 p_118) lleserib(d IMl thH fUrra-may Formr1tion u bull rfhese

workingg arlt~ in tha southern pHrt of the Colonel North area

Hnd Bre situated close to thE Grubb t El tram Twelvetrees and

Viard sta ted that tho vein of ore was about 18 inches in

W-rlth d middot t~at middotmiddotl1middotltnl~it C aomV1~V 1middot1middot1 ~Iith r-JJ-lbullLII J~ t (~~lt Jt JgtJi(~ ~i v VOv af-oltllt ~-dl-iJl~l ~ v E~~T~ 1lJ4t

occurri tl onl~ in spots lrde dCGer pt100 is in accon~~1nce with the samples collected In addition to ephalerite and

galena minor amourrts of boulangeri to tetrahedr1 te bourshy

nord te pyri to nnr1 egthJlcopjrri te were observed in p(11iD J ed

secmiddottionn of the poundpecimerm

1he g~11ena spotstt (P342 34)) are patches of galena

from 1mm up -to 25em in overall width in mas8l~le white

quertz Some ~lp0cimene of quartz are -the h1clred H or chopshy

d tl f) re+xr~ to by nr (J~ tt (11gt10 t - 1qJIg) r-o 11bull iJvmiddot LP tli ) t cmiddottmiddotrl p ~4 ~ +ne

north-etuJt of Taamnnia let ietd attrHmted the svrp angular

impreslJions tn the (lut3rtz to feldspar crystals but it 3IJJGars

l11oly that the im1ressions in this material fror the

Colonnl North 8ea have been CE1USG(1 hy Cl cryst~al1ine Cflfrbshy

onate ]rObtol1l1y sid eri ta which naB siu(~G bean leachefl Ollt

82

~flhe gelena i~3 ric) in inclusions of bou13n~erlte and

inclnsiollS ofte-trchedri te and bOUXtlOl1i te Elre rllao common

I1lC bonlaneri-te occurs as fine needle-l1ke bodies riwging

in length from OOf)2mrn up to O08mm Thena shmv an even

distribution through most of ihe gcllena but are occasionally

conoentratef~ inmiddotto erneI1 pfttches (up to O3mm in width) eonshy

slstillg of cllJBters ofthef-Je tine needles Tetrohedri to is

leGs evenly dist~rHUted and occurs as irregolarly shaped

bodje~3 ran~inf5 in overall w1dth from O01mrn to O075mrn

These t0trahedri te bodies always occur tn the alena but are

freiuently observHd on the borders of sphalerite inclusions

in the galena Bournoni te is present inmiddotthe palcf1m as very

fine bodies COITIWOn and evenly diatr111uted ioP 34 hut less

_ 343common Ifl 1~ bull PleCle bocH-ea clre getlerally roil-like or

round in Bhnpe gltlou~h it ia quj te lihely that many of the

rouni~ hodi(~s are merely eross-secmiddottions of rod-li1H2J bodies

Th 1 - lhrJ 0 tmiddot1Ilt1lt 11 vJr1 f 011 0 (10)1n t Omiddot ()15-m ndv vt~iU-- 1 tA Ij- LJ3 middot~O t4 ~ 1 bull tmiddotv v bull middotLmiddot9 ttmiddotmiddot

tho diameters of the round boriies rnge from O 001mm to

O005rm1 In 12342 SOftie of the bourmmite tnclttsions dnow

) M(lnl~ltmiddot j r middotmiddotymiddot~tnmiddott IF -lj 3J rn-tJ 1middot -Ftl lt~ en(~ ~~ ampi- ~ A - 17- 1_bull ~_ gt l~J ~ bull v tt J v P 1 v~t-l v JIJ (Jr ~~) ~ J Ql bull

Pyrtte is not common in the coarse gf~Jgteila where 11

occurs only ao vcry SIWJll1 (o 01ryn) idiornor(c cr~i8tals

which appear 1~o have hCEm eXtelh3i vely rejh)cel by the gn1ena

P~lrite is 8 lit~middottle morc common ln the sph11erite-rich ore

where it olcurs in tllC1 mCSrlive SphD lerl te as ldiomoIgthic

lYltmiddot1~ (0 Omiddot1rT t r Q O~~l) middot-amiddotr -tIn r 4middot Cl J 1y r )middotmiddotlmiddotcl by~ ~t~ (I)lJgt f~_1 gtt ~ 11 ~lJ1Jc~ llWtA J t-(ci 1-- ~j__ ~Cgtj~

83

the aphalerito

Sphelertte occurs tn tiQ coarse galena nD fJllall nref~S

wldc 1 appear to have boon ClXtOU i v(~ly rp1nced The 3120

of Chost) 1ufLntol1 rtr() y exceeds O1mn The cpecimens

Oof rlltHJve~ ~ln)J)e-vgt S~j P-lt 3444(~) CJ_ - 011110~- ~I ~~~~~~~J~ ~~ _ ) 0ouiflt ( ~ e~11rAly gtJ

of fl)llalelt gt 71th sID11 f3ffiOUn (~) ofu rtz gCH1gUG Jhe

E1p1l~lorj -to 11 modorately dxk tn hnnd BPOC1I1n

Minor nmount~J of Br-Ionl occur l OUg10Ut t1o spht~lertte

DS mloll 1rrcgvJr1rly 11)011 PflliChes t ntrell grenter than

C25mm in overclll width rrhbJ BlI a ap (~nrsto rOl)reemlt

Jncident Toacmnmiddotnt of 1ihe sphalerito

C1H1 COT7~ -j ] a] 0 ~lsrgtY1of- 11 )OJI1 ~middotlmiddotn-q 0-( ~he- JtJJ1u ~ lt) t-v middot l]U - (~-r h~ f I~ ~

SPHiJ erito ClS ex-tremely minute blobs moot of which (IO 10sa

than O0005mmOl in size am1 ~Jhow rnnclom oriontabion Some

minute bleba in thene nrE)rS may be pyrrhoti-be but the fine

naturo prevents procise idClTjfication

84

ASDCll1blape t

of ore bull

minerelsr

Common 13oulangClt-i0 - goJena Gona - sphnleri-te G~lena - tetrahoc1rj to Bournonie - galena Plri to - sjhalerlte

Infra l1ent Boulangeri te - bournonite - galena n01l1nnfJ~eite - gelona - sphalerite Boulangeritc - galena - tctrahedrito ChHlcoPJrrtte - sphnlerite Cklena - pyrito ~~lftn~ ~urit~middot A-~1D~i~middot~_~V_ c -shy JJ t~ - 0L~oC4-j~1 llo G-rltlema - f3pbi~l()ri to - tetrrec1rite

Uue BournoniLe - gDIena - spJolerite Galena -write - sp7Jn1erite - tetrahe(lri~E

f3S

Spray Mine

The rnaln worlring0 of the Spray [)iine are located on the

nor1l~ern slopes of Spray Hill south of manganese Hill and

on the southern side of the Comstock trern formation

The host rocks of the ore-bodies are quartzi toe ond

slflOB of the Oonahllartzite and Slate (BliElBstt 1962)

A(cording to WaIler (19(4) the Main Lode cont1nued north

and entered rocks which Bllssett (1962) oonsiderfJ to be

prohably pori oftihG Cambri9n Crimson Creek Formation

~111er oboe ved thot the lode was produotive onl in the

Jreoombrlan quartzite and sl0te as the workings in the

Carnbrian rockswere shallow nnlllhe ore completely oxidized

Detailed descriptions of the workings were given by

WaIler (19(14) and fiwelvetrels and Ward (1910) A total of

four ore-bodies were repormiddotted all of which were parnllel

strik ng NNW and steeply tlipfing The rost important lodes

ore No 1 (Main) ftnd No 3 (Gurnj_Els) Nos 2 nnd 4 were of

11ttle economic importance Valler describ(~d VIC lodcs as

well doff ned fismre formmiddotti one

The ore was reported 10 comliot of g81enand a leodshy

antiJrony SUlp11ide (re erred to as jarnesoni te) with pfrie

in a gangne of ioerimiddotto md quortz AccoTf1inglo WaIler one

of the richest ore shoots discovHred in the Zeehatl ltliatrict

oocurrsc1 in the l1inin Lode in Page and [loDermottts Jorkings

The ore in thiltl shoot renched a maximum width of 16 feet ana

the leJlgl~h of ~he shoot was reported to be 400 feet WalleI

86

esttmated DppIoxirrltrt l )ly two-tl-drde of ~Ilc~ ore to be galena

Ri~ports in1icate thaL the silver content of th ore

vlrjed connider~tblyhr()llghout the mine but =Lt woulcl apreac

from th~~ avatlllble fi lturea that tho average aUvcr con L(mt

of the ore Nas of the order of 100 ozeper ton TwelvetrHGc

and WeIrd nocl a cnrreltion between high BDver ana imtimony

content8 in the ore and Twelvetrees (1901a) refcrted that

some rich untimonhtl-leail ore neayed ov(~r ~) ODe) ozs of

silver ler ton in-ITer (op ci t) staterl thattho ntimony

content of ho ore WGf-J higher in upfer levels rtnc1 that

psrtte increq~ec1 in abUDrlmce at lOer levels

ThepreS6flce of small Cluntt tje~1 of argentitc flsfjociaterl

ttl _ 1 l~rjteI

CO-~ ~ revmiddotr~middotJ1J brt1Pemiddott+e~gtJ (1910) t-lmiddotJ~eClmnI) ~ imiddotr lmiddoto1 lmiddotJtt ~1Jmiddot ~l ~~O

(X235P52) tnlhe T(sm9nian Museum colloction confirms this

recurt This ~-)pecimen which Hl originc1lly in the W 1

Pettord col1ection contnins patches of rlrgcntite up to 3cm

x 2cm occurring ~lS thin films on ~ddlrt Ca 111088 of galena

covell~lte and lwrttC dt1iin lihe arge1titc flere noted in

polished section

Pett~erll (op cit p9 ) Chl0 recoriled the presence of

mltive antimony nil thin rillfJ~tjng patches about 811 inch

ln (Hameter irnplantec1 on H si l1Coovs matr-Ix tt T~jf) ikntt shy

fic~~ljon mal be ttnrl-iable as a sicoimcn from PettorO to col-

lectiton (now eclmen no Xf17 in -thCl lHDInnian V)USCWfi Col1ecshy

h nqt l n(lI 1 0 U ~ -ion)J lltbi1 rlt) J __ ~ J ~ IPJ11 -l4V(J 41~14monyVL Unmiddotmiddotmiddotbmiddotnnw t~~~Jbn9

1dmtified flO EJtHmite In Ihe abtHmce of any reports of

n bullJ v Q timiddoton1 dgtro 711 () rgtlfj bullbullf _ in +lC~I 14O~~J ~han bull no rnV(J

i

~~lj I~l )~ -1 bull 10l1 L tle~Jc ibull it

e lik-]middot lllt 1111 Cl-ITIOYl i ~ro ~t ( r poi cy fJ 1 - J IJdJP ~y t) no

87

Ietterd (opeit) also liste( small amounts of the secondary

minerals ke1mesi te and atjblconite in the Spray workingth

The gOS3ftfi outcrop of Gurniemiddot s Lode at trw tcrp of the

Spray Hill wao reported h~ ~rw)lvetrees and Nard (1910) to

be rich in naltive silver and silver chlor14n

Sr9cimens of ore in thc) tt1rlSmtln1anMuseum collectt on

fnd rtt9tertal collected from the tmrfaee dumps near the

lJorkj ngs were found to contain boulangerite galcma pyri te

and 9phalerite atl the-major metallic corJst1tttents in a

gIFtUg119 of aideri teurol Imd (lUJ)rtz Minor cOflsti tuents irlentified

in l)olisrH~dsectjonB were arsenopyrite tetlahedrl ta bourshy

nordta ehale~pyrite rnd pyrrl1oti ie T1H pIoportions of

the v~ril)lJs cOlUrtituents nhow 0 cOrlsideehle vUriation

between flpec1mens

Stil1wel1 (1947) (lesoribedsome npecimens from the

S~ray Mtue andtlHSlre i~J good agreement between Stil1well 8

deeeri pt1ons and the Beeimens exrunined in this investigation

All of the rninera1a and feaures de~lcrfbed by Stil1wel1 hOva

been observed and s(ma~ ~~dditiol1alminen~la (bournonlte and

pyrrhotite) have been noted Sphalerimiddotte is considerably

more aburldant in some of tihase specimenathan 1n tllOse

described by SIil1wel1

Boulan~erita wlieh istho most abundarrt ore rrdneral in

the sulle of opecif)en8 examined replesena t~je Inineral reshy

farred to Q8 jilmcsonite in many eerljer nccountg of the

geology d~ thn Zeehnn area Theproperties and identifictltion

ObL ~l ho~lQn()Iri~ ~~ lttT 11ltigt~crlj(bull Lsewneret ( PlO1011) orne~t L ( I ~~ S

88

specimens of ore (etg 1202) consist essentlally of rrtaseive

boulallgi~rite with minor aliOunts of tetrnhedrito gmlema

bournonitat pyrite RllG arsenopri to ~prescnt as inclu8l ona

INittdn th~~ boulangegtrite fIetraheltiri te is fl comrlOfl assooshy

late of the llOulan eri te in these specimens and in ono

sarrlple (1 50) constitutes apIuoximately 10 of the ore The

size of the tmlivilu81 areas of ter-rahedrite within the

boulangenite rftLngf from very Ftne up to O 25mrn 2l1f1 the

tlLxturul rc~lBiionahip suggGSts thst ie1rahedrite hrupound undeI shy

ponepartial replacement by boulrmgertte frhe fremiddot~uenoy of

middotthe fU38ernblJge bOl)I~ngerite-tetrnlHedrito io in Iteeplng Iidth

the ohservtation of tltel vetrees and Ward (1910) that h1gh

silver valuog were often related to hilth antimollY content

in ore from the SPlI~y iine

ECHJI~~lnged ta alf3o occurs throughout much 01 the 813erite

gengue SJJmiddot fine rod-li ke (md nasdle-11ke crys tal~ (eg P 181)

lt ~Wimiddottlt the longthe of ihe individual crystals rarely exceeding

O05mm fhese fin(~ cryfdals ar~ common in sm~111 clusters

lEUld velnleta and ()cctudcmally merge to form areas consi~3ting

of mFUfH~S of thfHH3 ftne ftroa~Jf and nnEHtl1es u (Plate ~59No 1)

fli(J vdltlth of the individual mamdve HreaEl reoches a mflximum

OT evE~ral centimetres (Si P 00)

GHlena is leSfl atl11ndantmiddot than boult3ngerite in tlH~se

spocimens and 2H rsrely observed lfUihout some aHwciated

k 1 J f 1 ( on 1(~)t )Ut)Vd angen e E~ argor CUeuroUJS 0 ga~3Fl e J J) ~re

up to sEnreral ce1ttmetres in overill l11i dth I~nd are surrounded

by gangnet nnd cont]in 1~j_ne inclusions of boulHngeri ta

- -------------------------------- ------

89shy

tetr51hedri te sphalerita pyrl te and arsenopyri te Grdena

~lao oonurs ~l8 freqlltmt fine (O01-007mm) 1ncluslons

of irregular outline within 1he maas1ve houlangeri tee

130urnoni te focrns sm11 irrerularly-shaped pt~tehm

within the massive boulangarite the overall width ()f these

inclnsions ranging from O025mrn ul) to O )rnm A small

amount of hournonite W~JS also observed as nstrrow veinlete

(oOOmm to O015mm jn v1dth) in Sl)hsJeri te and pyr1 te

(P 196) bull Cbaleopyri t( t tertrahe(1rite tmd galena are Jgtresent

pound$ inelusiona within the bournonite in these veinlemiddotts

Pllite and arsenopyri te are Invjuiahly associated hut

in VtiriOttS prop()rtions and occur as idiomorrhie and 6ubidshy

iomorphic crYHtala di flseminated through the other sLlphides

and tllr~ gnngtte Masavs areas up 10 several centimetres in

i1idth 8re alao resent (eg middotP H39 192) in ~ome speclmens

In tle[H~ l3reas pyri to is generally the lJl()re alnlndarrt of the

two rninerals but occasionally arEHt101)yrito ia the matn conshy

sti tuantThe in(1jviduol erystnlG of each mineral range from

O01rmn up to O 5r1l Both minereh1 have apparerltly undershy

one ext~cnsive replacement by boulatlgerite gaJsna tetrashy

hedrite nrdl bournQnite and partinl replacernent by sphaJerif(2)o

J3cmlarlgeri te temiddottrahettrimiddotte and gal~~na occupy trrtorsti tial

areas in the m~lSt3ive pyr1te and arsenopyrite liltla also occur

as fine inclusionn and veLnle~s withinthese minerals

middot~hltlari+ll Cl nblimiddotd middot in ~Omiddot1middotp -)ir1lt~nr1 (Q 1) 18middot 191)- i~L~gt ~ bull ~ v JJ c1 JL) c~tj J 71 (1 l-~~ ~v bullt~~t~ ~~)t t le

but is absent or rare in others In hand specimen te sJihalshy

arife ia moderately dark

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 7: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

80

Colonel north Minos I _ iiIl i bull bull

11 1 tmiddot I (gt- ~11 1 1 ~ b ~middotiir 0Ibull ~ lt Cf 0 viean ullC Ujjray ne nt vlO uU OU) 11 n

incluc1es nuruorou8 rWJDll vorkinCG which wore on 10[1800 hold

a~~ varieruJ times 1Jy te Colonel North TlneCl nwl Itilway

Co bull N J and nre norr1nJl~r reftirre(~ to a8 tho Colonel North

j1lnes These worln[~G in~lud( the Colonel North hnft the

Vtctorltl - ZeohcH1 hnfmiddott the Silver POWTI lt1l1it the Silver

Lnc ~r1middotitmiddot ~ntl tmiddotmiddotc t1lvI Vjvo ~rorltinc TlIO (1 b~middotmiddotSmiddotlrina ) u 11 bullmiddot ~ l bull -_ ___ v Ci (tt V H lo-J 1- 7Jo A kJ Q furtIer BOUt waG -Iso operated by hiB Company aml I[U3 rcshy

farred to in some ropor0s ~JD th~ Colonel North rfine

Bljssott (1962) has r1escribod ~h0 country ro~ks in the

Colonel North iaren a~l IIfolltled nnd 4io urbcc1 ohnle ilate and

nn] e 11l-rt7ite rl (1 onn Kh~ ch ~e et 0(gt 1- ( () 011 gt n Ttff~- -4- JJ 1 iJI middot~otJ ( I~L ~~ (~ ~J~middot-1~ )_ lJi~ ~~ fjCil~ lft

z1t 0 lt1l1(1 SIft1gt0 bull

The mineralogy of th( ore found in tIJo v~~riOuH worlrin(o

nppe1ro to have been mVJOnt1r111y uniform 1)escription8 by

m~lemiddotlv~middotlmiddot1el~u ~ rd Fnll~a (19middotmiddot10) inaiU - 1-1+c~(b Cltgtlrgtn~wnl--t- C~IV 0J) C LA middot 1gt(1 thi~ ~IJIIj

matn rletallic rn1n rrDl vllth EJr1811 amounts ofyri e sphalshy

orj(e Gnd an at1t5mony-bear1ngr~tntn~al (probably boulangerito)

in a gangue of qtlart~ nnd s1Grite The minoralization was

pDtob anltl of low Brad e overall

The Chlori1e TJodo in ~he north-eoJJt 1)[11( of the Colonel

North area was described by Twclvet1oEH1 ml rrnId ne c8rrying

bands and noduleo of hematite and memillnry I1monita the

nodules containing Dil1er chlorl(1e nncl native silver Some

high gr(l e pat(hes nosyed as hi-gh as 1000 OZB oilver per

81

ton but the average ~Jilver content of the materinl exshy

tracterl was 40 ozs silver per ton

Dumps in the vicinl tV of the vsrioufl Nokingr~ have

been eXHmined for samples afore but most contain only traces

of galena ill ahnle qiL1irtz and siieri tee Jhe only useful

mateltl~ifll for miner1l1ogical examtnation W8S founfJ in the

dumps of ~J01rle sffi1ill workings in what TJolvetreer rnd lacd

(1910 p_118) lleserib(d IMl thH fUrra-may Formr1tion u bull rfhese

workingg arlt~ in tha southern pHrt of the Colonel North area

Hnd Bre situated close to thE Grubb t El tram Twelvetrees and

Viard sta ted that tho vein of ore was about 18 inches in

W-rlth d middot t~at middotmiddotl1middotltnl~it C aomV1~V 1middot1middot1 ~Iith r-JJ-lbullLII J~ t (~~lt Jt JgtJi(~ ~i v VOv af-oltllt ~-dl-iJl~l ~ v E~~T~ 1lJ4t

occurri tl onl~ in spots lrde dCGer pt100 is in accon~~1nce with the samples collected In addition to ephalerite and

galena minor amourrts of boulangeri to tetrahedr1 te bourshy

nord te pyri to nnr1 egthJlcopjrri te were observed in p(11iD J ed

secmiddottionn of the poundpecimerm

1he g~11ena spotstt (P342 34)) are patches of galena

from 1mm up -to 25em in overall width in mas8l~le white

quertz Some ~lp0cimene of quartz are -the h1clred H or chopshy

d tl f) re+xr~ to by nr (J~ tt (11gt10 t - 1qJIg) r-o 11bull iJvmiddot LP tli ) t cmiddottmiddotrl p ~4 ~ +ne

north-etuJt of Taamnnia let ietd attrHmted the svrp angular

impreslJions tn the (lut3rtz to feldspar crystals but it 3IJJGars

l11oly that the im1ressions in this material fror the

Colonnl North 8ea have been CE1USG(1 hy Cl cryst~al1ine Cflfrbshy

onate ]rObtol1l1y sid eri ta which naB siu(~G bean leachefl Ollt

82

~flhe gelena i~3 ric) in inclusions of bou13n~erlte and

inclnsiollS ofte-trchedri te and bOUXtlOl1i te Elre rllao common

I1lC bonlaneri-te occurs as fine needle-l1ke bodies riwging

in length from OOf)2mrn up to O08mm Thena shmv an even

distribution through most of ihe gcllena but are occasionally

conoentratef~ inmiddotto erneI1 pfttches (up to O3mm in width) eonshy

slstillg of cllJBters ofthef-Je tine needles Tetrohedri to is

leGs evenly dist~rHUted and occurs as irregolarly shaped

bodje~3 ran~inf5 in overall w1dth from O01mrn to O075mrn

These t0trahedri te bodies always occur tn the alena but are

freiuently observHd on the borders of sphalerite inclusions

in the galena Bournoni te is present inmiddotthe palcf1m as very

fine bodies COITIWOn and evenly diatr111uted ioP 34 hut less

_ 343common Ifl 1~ bull PleCle bocH-ea clre getlerally roil-like or

round in Bhnpe gltlou~h it ia quj te lihely that many of the

rouni~ hodi(~s are merely eross-secmiddottions of rod-li1H2J bodies

Th 1 - lhrJ 0 tmiddot1Ilt1lt 11 vJr1 f 011 0 (10)1n t Omiddot ()15-m ndv vt~iU-- 1 tA Ij- LJ3 middot~O t4 ~ 1 bull tmiddotv v bull middotLmiddot9 ttmiddotmiddot

tho diameters of the round boriies rnge from O 001mm to

O005rm1 In 12342 SOftie of the bourmmite tnclttsions dnow

) M(lnl~ltmiddot j r middotmiddotymiddot~tnmiddott IF -lj 3J rn-tJ 1middot -Ftl lt~ en(~ ~~ ampi- ~ A - 17- 1_bull ~_ gt l~J ~ bull v tt J v P 1 v~t-l v JIJ (Jr ~~) ~ J Ql bull

Pyrtte is not common in the coarse gf~Jgteila where 11

occurs only ao vcry SIWJll1 (o 01ryn) idiornor(c cr~i8tals

which appear 1~o have hCEm eXtelh3i vely rejh)cel by the gn1ena

P~lrite is 8 lit~middottle morc common ln the sph11erite-rich ore

where it olcurs in tllC1 mCSrlive SphD lerl te as ldiomoIgthic

lYltmiddot1~ (0 Omiddot1rT t r Q O~~l) middot-amiddotr -tIn r 4middot Cl J 1y r )middotmiddotlmiddotcl by~ ~t~ (I)lJgt f~_1 gtt ~ 11 ~lJ1Jc~ llWtA J t-(ci 1-- ~j__ ~Cgtj~

83

the aphalerito

Sphelertte occurs tn tiQ coarse galena nD fJllall nref~S

wldc 1 appear to have boon ClXtOU i v(~ly rp1nced The 3120

of Chost) 1ufLntol1 rtr() y exceeds O1mn The cpecimens

Oof rlltHJve~ ~ln)J)e-vgt S~j P-lt 3444(~) CJ_ - 011110~- ~I ~~~~~~~J~ ~~ _ ) 0ouiflt ( ~ e~11rAly gtJ

of fl)llalelt gt 71th sID11 f3ffiOUn (~) ofu rtz gCH1gUG Jhe

E1p1l~lorj -to 11 modorately dxk tn hnnd BPOC1I1n

Minor nmount~J of Br-Ionl occur l OUg10Ut t1o spht~lertte

DS mloll 1rrcgvJr1rly 11)011 PflliChes t ntrell grenter than

C25mm in overclll width rrhbJ BlI a ap (~nrsto rOl)reemlt

Jncident Toacmnmiddotnt of 1ihe sphalerito

C1H1 COT7~ -j ] a] 0 ~lsrgtY1of- 11 )OJI1 ~middotlmiddotn-q 0-( ~he- JtJJ1u ~ lt) t-v middot l]U - (~-r h~ f I~ ~

SPHiJ erito ClS ex-tremely minute blobs moot of which (IO 10sa

than O0005mmOl in size am1 ~Jhow rnnclom oriontabion Some

minute bleba in thene nrE)rS may be pyrrhoti-be but the fine

naturo prevents procise idClTjfication

84

ASDCll1blape t

of ore bull

minerelsr

Common 13oulangClt-i0 - goJena Gona - sphnleri-te G~lena - tetrahoc1rj to Bournonie - galena Plri to - sjhalerlte

Infra l1ent Boulangeri te - bournonite - galena n01l1nnfJ~eite - gelona - sphalerite Boulangeritc - galena - tctrahedrito ChHlcoPJrrtte - sphnlerite Cklena - pyrito ~~lftn~ ~urit~middot A-~1D~i~middot~_~V_ c -shy JJ t~ - 0L~oC4-j~1 llo G-rltlema - f3pbi~l()ri to - tetrrec1rite

Uue BournoniLe - gDIena - spJolerite Galena -write - sp7Jn1erite - tetrahe(lri~E

f3S

Spray Mine

The rnaln worlring0 of the Spray [)iine are located on the

nor1l~ern slopes of Spray Hill south of manganese Hill and

on the southern side of the Comstock trern formation

The host rocks of the ore-bodies are quartzi toe ond

slflOB of the Oonahllartzite and Slate (BliElBstt 1962)

A(cording to WaIler (19(4) the Main Lode cont1nued north

and entered rocks which Bllssett (1962) oonsiderfJ to be

prohably pori oftihG Cambri9n Crimson Creek Formation

~111er oboe ved thot the lode was produotive onl in the

Jreoombrlan quartzite and sl0te as the workings in the

Carnbrian rockswere shallow nnlllhe ore completely oxidized

Detailed descriptions of the workings were given by

WaIler (19(14) and fiwelvetrels and Ward (1910) A total of

four ore-bodies were repormiddotted all of which were parnllel

strik ng NNW and steeply tlipfing The rost important lodes

ore No 1 (Main) ftnd No 3 (Gurnj_Els) Nos 2 nnd 4 were of

11ttle economic importance Valler describ(~d VIC lodcs as

well doff ned fismre formmiddotti one

The ore was reported 10 comliot of g81enand a leodshy

antiJrony SUlp11ide (re erred to as jarnesoni te) with pfrie

in a gangne of ioerimiddotto md quortz AccoTf1inglo WaIler one

of the richest ore shoots discovHred in the Zeehatl ltliatrict

oocurrsc1 in the l1inin Lode in Page and [loDermottts Jorkings

The ore in thiltl shoot renched a maximum width of 16 feet ana

the leJlgl~h of ~he shoot was reported to be 400 feet WalleI

86

esttmated DppIoxirrltrt l )ly two-tl-drde of ~Ilc~ ore to be galena

Ri~ports in1icate thaL the silver content of th ore

vlrjed connider~tblyhr()llghout the mine but =Lt woulcl apreac

from th~~ avatlllble fi lturea that tho average aUvcr con L(mt

of the ore Nas of the order of 100 ozeper ton TwelvetrHGc

and WeIrd nocl a cnrreltion between high BDver ana imtimony

content8 in the ore and Twelvetrees (1901a) refcrted that

some rich untimonhtl-leail ore neayed ov(~r ~) ODe) ozs of

silver ler ton in-ITer (op ci t) staterl thattho ntimony

content of ho ore WGf-J higher in upfer levels rtnc1 that

psrtte increq~ec1 in abUDrlmce at lOer levels

ThepreS6flce of small Cluntt tje~1 of argentitc flsfjociaterl

ttl _ 1 l~rjteI

CO-~ ~ revmiddotr~middotJ1J brt1Pemiddott+e~gtJ (1910) t-lmiddotJ~eClmnI) ~ imiddotr lmiddoto1 lmiddotJtt ~1Jmiddot ~l ~~O

(X235P52) tnlhe T(sm9nian Museum colloction confirms this

recurt This ~-)pecimen which Hl originc1lly in the W 1

Pettord col1ection contnins patches of rlrgcntite up to 3cm

x 2cm occurring ~lS thin films on ~ddlrt Ca 111088 of galena

covell~lte and lwrttC dt1iin lihe arge1titc flere noted in

polished section

Pett~erll (op cit p9 ) Chl0 recoriled the presence of

mltive antimony nil thin rillfJ~tjng patches about 811 inch

ln (Hameter irnplantec1 on H si l1Coovs matr-Ix tt T~jf) ikntt shy

fic~~ljon mal be ttnrl-iable as a sicoimcn from PettorO to col-

lectiton (now eclmen no Xf17 in -thCl lHDInnian V)USCWfi Col1ecshy

h nqt l n(lI 1 0 U ~ -ion)J lltbi1 rlt) J __ ~ J ~ IPJ11 -l4V(J 41~14monyVL Unmiddotmiddotmiddotbmiddotnnw t~~~Jbn9

1dmtified flO EJtHmite In Ihe abtHmce of any reports of

n bullJ v Q timiddoton1 dgtro 711 () rgtlfj bullbullf _ in +lC~I 14O~~J ~han bull no rnV(J

i

~~lj I~l )~ -1 bull 10l1 L tle~Jc ibull it

e lik-]middot lllt 1111 Cl-ITIOYl i ~ro ~t ( r poi cy fJ 1 - J IJdJP ~y t) no

87

Ietterd (opeit) also liste( small amounts of the secondary

minerals ke1mesi te and atjblconite in the Spray workingth

The gOS3ftfi outcrop of Gurniemiddot s Lode at trw tcrp of the

Spray Hill wao reported h~ ~rw)lvetrees and Nard (1910) to

be rich in naltive silver and silver chlor14n

Sr9cimens of ore in thc) tt1rlSmtln1anMuseum collectt on

fnd rtt9tertal collected from the tmrfaee dumps near the

lJorkj ngs were found to contain boulangerite galcma pyri te

and 9phalerite atl the-major metallic corJst1tttents in a

gIFtUg119 of aideri teurol Imd (lUJ)rtz Minor cOflsti tuents irlentified

in l)olisrH~dsectjonB were arsenopyrite tetlahedrl ta bourshy

nordta ehale~pyrite rnd pyrrl1oti ie T1H pIoportions of

the v~ril)lJs cOlUrtituents nhow 0 cOrlsideehle vUriation

between flpec1mens

Stil1wel1 (1947) (lesoribedsome npecimens from the

S~ray Mtue andtlHSlre i~J good agreement between Stil1well 8

deeeri pt1ons and the Beeimens exrunined in this investigation

All of the rninera1a and feaures de~lcrfbed by Stil1wel1 hOva

been observed and s(ma~ ~~dditiol1alminen~la (bournonlte and

pyrrhotite) have been noted Sphalerimiddotte is considerably

more aburldant in some of tihase specimenathan 1n tllOse

described by SIil1wel1

Boulan~erita wlieh istho most abundarrt ore rrdneral in

the sulle of opecif)en8 examined replesena t~je Inineral reshy

farred to Q8 jilmcsonite in many eerljer nccountg of the

geology d~ thn Zeehnn area Theproperties and identifictltion

ObL ~l ho~lQn()Iri~ ~~ lttT 11ltigt~crlj(bull Lsewneret ( PlO1011) orne~t L ( I ~~ S

88

specimens of ore (etg 1202) consist essentlally of rrtaseive

boulallgi~rite with minor aliOunts of tetrnhedrito gmlema

bournonitat pyrite RllG arsenopri to ~prescnt as inclu8l ona

INittdn th~~ boulangegtrite fIetraheltiri te is fl comrlOfl assooshy

late of the llOulan eri te in these specimens and in ono

sarrlple (1 50) constitutes apIuoximately 10 of the ore The

size of the tmlivilu81 areas of ter-rahedrite within the

boulangenite rftLngf from very Ftne up to O 25mrn 2l1f1 the

tlLxturul rc~lBiionahip suggGSts thst ie1rahedrite hrupound undeI shy

ponepartial replacement by boulrmgertte frhe fremiddot~uenoy of

middotthe fU38ernblJge bOl)I~ngerite-tetrnlHedrito io in Iteeplng Iidth

the ohservtation of tltel vetrees and Ward (1910) that h1gh

silver valuog were often related to hilth antimollY content

in ore from the SPlI~y iine

ECHJI~~lnged ta alf3o occurs throughout much 01 the 813erite

gengue SJJmiddot fine rod-li ke (md nasdle-11ke crys tal~ (eg P 181)

lt ~Wimiddottlt the longthe of ihe individual crystals rarely exceeding

O05mm fhese fin(~ cryfdals ar~ common in sm~111 clusters

lEUld velnleta and ()cctudcmally merge to form areas consi~3ting

of mFUfH~S of thfHH3 ftne ftroa~Jf and nnEHtl1es u (Plate ~59No 1)

fli(J vdltlth of the individual mamdve HreaEl reoches a mflximum

OT evE~ral centimetres (Si P 00)

GHlena is leSfl atl11ndantmiddot than boult3ngerite in tlH~se

spocimens and 2H rsrely observed lfUihout some aHwciated

k 1 J f 1 ( on 1(~)t )Ut)Vd angen e E~ argor CUeuroUJS 0 ga~3Fl e J J) ~re

up to sEnreral ce1ttmetres in overill l11i dth I~nd are surrounded

by gangnet nnd cont]in 1~j_ne inclusions of boulHngeri ta

- -------------------------------- ------

89shy

tetr51hedri te sphalerita pyrl te and arsenopyri te Grdena

~lao oonurs ~l8 freqlltmt fine (O01-007mm) 1ncluslons

of irregular outline within 1he maas1ve houlangeri tee

130urnoni te focrns sm11 irrerularly-shaped pt~tehm

within the massive boulangarite the overall width ()f these

inclnsions ranging from O025mrn ul) to O )rnm A small

amount of hournonite W~JS also observed as nstrrow veinlete

(oOOmm to O015mm jn v1dth) in Sl)hsJeri te and pyr1 te

(P 196) bull Cbaleopyri t( t tertrahe(1rite tmd galena are Jgtresent

pound$ inelusiona within the bournonite in these veinlemiddotts

Pllite and arsenopyri te are Invjuiahly associated hut

in VtiriOttS prop()rtions and occur as idiomorrhie and 6ubidshy

iomorphic crYHtala di flseminated through the other sLlphides

and tllr~ gnngtte Masavs areas up 10 several centimetres in

i1idth 8re alao resent (eg middotP H39 192) in ~ome speclmens

In tle[H~ l3reas pyri to is generally the lJl()re alnlndarrt of the

two rninerals but occasionally arEHt101)yrito ia the matn conshy

sti tuantThe in(1jviduol erystnlG of each mineral range from

O01rmn up to O 5r1l Both minereh1 have apparerltly undershy

one ext~cnsive replacement by boulatlgerite gaJsna tetrashy

hedrite nrdl bournQnite and partinl replacernent by sphaJerif(2)o

J3cmlarlgeri te temiddottrahettrimiddotte and gal~~na occupy trrtorsti tial

areas in the m~lSt3ive pyr1te and arsenopyrite liltla also occur

as fine inclusionn and veLnle~s withinthese minerals

middot~hltlari+ll Cl nblimiddotd middot in ~Omiddot1middotp -)ir1lt~nr1 (Q 1) 18middot 191)- i~L~gt ~ bull ~ v JJ c1 JL) c~tj J 71 (1 l-~~ ~v bullt~~t~ ~~)t t le

but is absent or rare in others In hand specimen te sJihalshy

arife ia moderately dark

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 8: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

81

ton but the average ~Jilver content of the materinl exshy

tracterl was 40 ozs silver per ton

Dumps in the vicinl tV of the vsrioufl Nokingr~ have

been eXHmined for samples afore but most contain only traces

of galena ill ahnle qiL1irtz and siieri tee Jhe only useful

mateltl~ifll for miner1l1ogical examtnation W8S founfJ in the

dumps of ~J01rle sffi1ill workings in what TJolvetreer rnd lacd

(1910 p_118) lleserib(d IMl thH fUrra-may Formr1tion u bull rfhese

workingg arlt~ in tha southern pHrt of the Colonel North area

Hnd Bre situated close to thE Grubb t El tram Twelvetrees and

Viard sta ted that tho vein of ore was about 18 inches in

W-rlth d middot t~at middotmiddotl1middotltnl~it C aomV1~V 1middot1middot1 ~Iith r-JJ-lbullLII J~ t (~~lt Jt JgtJi(~ ~i v VOv af-oltllt ~-dl-iJl~l ~ v E~~T~ 1lJ4t

occurri tl onl~ in spots lrde dCGer pt100 is in accon~~1nce with the samples collected In addition to ephalerite and

galena minor amourrts of boulangeri to tetrahedr1 te bourshy

nord te pyri to nnr1 egthJlcopjrri te were observed in p(11iD J ed

secmiddottionn of the poundpecimerm

1he g~11ena spotstt (P342 34)) are patches of galena

from 1mm up -to 25em in overall width in mas8l~le white

quertz Some ~lp0cimene of quartz are -the h1clred H or chopshy

d tl f) re+xr~ to by nr (J~ tt (11gt10 t - 1qJIg) r-o 11bull iJvmiddot LP tli ) t cmiddottmiddotrl p ~4 ~ +ne

north-etuJt of Taamnnia let ietd attrHmted the svrp angular

impreslJions tn the (lut3rtz to feldspar crystals but it 3IJJGars

l11oly that the im1ressions in this material fror the

Colonnl North 8ea have been CE1USG(1 hy Cl cryst~al1ine Cflfrbshy

onate ]rObtol1l1y sid eri ta which naB siu(~G bean leachefl Ollt

82

~flhe gelena i~3 ric) in inclusions of bou13n~erlte and

inclnsiollS ofte-trchedri te and bOUXtlOl1i te Elre rllao common

I1lC bonlaneri-te occurs as fine needle-l1ke bodies riwging

in length from OOf)2mrn up to O08mm Thena shmv an even

distribution through most of ihe gcllena but are occasionally

conoentratef~ inmiddotto erneI1 pfttches (up to O3mm in width) eonshy

slstillg of cllJBters ofthef-Je tine needles Tetrohedri to is

leGs evenly dist~rHUted and occurs as irregolarly shaped

bodje~3 ran~inf5 in overall w1dth from O01mrn to O075mrn

These t0trahedri te bodies always occur tn the alena but are

freiuently observHd on the borders of sphalerite inclusions

in the galena Bournoni te is present inmiddotthe palcf1m as very

fine bodies COITIWOn and evenly diatr111uted ioP 34 hut less

_ 343common Ifl 1~ bull PleCle bocH-ea clre getlerally roil-like or

round in Bhnpe gltlou~h it ia quj te lihely that many of the

rouni~ hodi(~s are merely eross-secmiddottions of rod-li1H2J bodies

Th 1 - lhrJ 0 tmiddot1Ilt1lt 11 vJr1 f 011 0 (10)1n t Omiddot ()15-m ndv vt~iU-- 1 tA Ij- LJ3 middot~O t4 ~ 1 bull tmiddotv v bull middotLmiddot9 ttmiddotmiddot

tho diameters of the round boriies rnge from O 001mm to

O005rm1 In 12342 SOftie of the bourmmite tnclttsions dnow

) M(lnl~ltmiddot j r middotmiddotymiddot~tnmiddott IF -lj 3J rn-tJ 1middot -Ftl lt~ en(~ ~~ ampi- ~ A - 17- 1_bull ~_ gt l~J ~ bull v tt J v P 1 v~t-l v JIJ (Jr ~~) ~ J Ql bull

Pyrtte is not common in the coarse gf~Jgteila where 11

occurs only ao vcry SIWJll1 (o 01ryn) idiornor(c cr~i8tals

which appear 1~o have hCEm eXtelh3i vely rejh)cel by the gn1ena

P~lrite is 8 lit~middottle morc common ln the sph11erite-rich ore

where it olcurs in tllC1 mCSrlive SphD lerl te as ldiomoIgthic

lYltmiddot1~ (0 Omiddot1rT t r Q O~~l) middot-amiddotr -tIn r 4middot Cl J 1y r )middotmiddotlmiddotcl by~ ~t~ (I)lJgt f~_1 gtt ~ 11 ~lJ1Jc~ llWtA J t-(ci 1-- ~j__ ~Cgtj~

83

the aphalerito

Sphelertte occurs tn tiQ coarse galena nD fJllall nref~S

wldc 1 appear to have boon ClXtOU i v(~ly rp1nced The 3120

of Chost) 1ufLntol1 rtr() y exceeds O1mn The cpecimens

Oof rlltHJve~ ~ln)J)e-vgt S~j P-lt 3444(~) CJ_ - 011110~- ~I ~~~~~~~J~ ~~ _ ) 0ouiflt ( ~ e~11rAly gtJ

of fl)llalelt gt 71th sID11 f3ffiOUn (~) ofu rtz gCH1gUG Jhe

E1p1l~lorj -to 11 modorately dxk tn hnnd BPOC1I1n

Minor nmount~J of Br-Ionl occur l OUg10Ut t1o spht~lertte

DS mloll 1rrcgvJr1rly 11)011 PflliChes t ntrell grenter than

C25mm in overclll width rrhbJ BlI a ap (~nrsto rOl)reemlt

Jncident Toacmnmiddotnt of 1ihe sphalerito

C1H1 COT7~ -j ] a] 0 ~lsrgtY1of- 11 )OJI1 ~middotlmiddotn-q 0-( ~he- JtJJ1u ~ lt) t-v middot l]U - (~-r h~ f I~ ~

SPHiJ erito ClS ex-tremely minute blobs moot of which (IO 10sa

than O0005mmOl in size am1 ~Jhow rnnclom oriontabion Some

minute bleba in thene nrE)rS may be pyrrhoti-be but the fine

naturo prevents procise idClTjfication

84

ASDCll1blape t

of ore bull

minerelsr

Common 13oulangClt-i0 - goJena Gona - sphnleri-te G~lena - tetrahoc1rj to Bournonie - galena Plri to - sjhalerlte

Infra l1ent Boulangeri te - bournonite - galena n01l1nnfJ~eite - gelona - sphalerite Boulangeritc - galena - tctrahedrito ChHlcoPJrrtte - sphnlerite Cklena - pyrito ~~lftn~ ~urit~middot A-~1D~i~middot~_~V_ c -shy JJ t~ - 0L~oC4-j~1 llo G-rltlema - f3pbi~l()ri to - tetrrec1rite

Uue BournoniLe - gDIena - spJolerite Galena -write - sp7Jn1erite - tetrahe(lri~E

f3S

Spray Mine

The rnaln worlring0 of the Spray [)iine are located on the

nor1l~ern slopes of Spray Hill south of manganese Hill and

on the southern side of the Comstock trern formation

The host rocks of the ore-bodies are quartzi toe ond

slflOB of the Oonahllartzite and Slate (BliElBstt 1962)

A(cording to WaIler (19(4) the Main Lode cont1nued north

and entered rocks which Bllssett (1962) oonsiderfJ to be

prohably pori oftihG Cambri9n Crimson Creek Formation

~111er oboe ved thot the lode was produotive onl in the

Jreoombrlan quartzite and sl0te as the workings in the

Carnbrian rockswere shallow nnlllhe ore completely oxidized

Detailed descriptions of the workings were given by

WaIler (19(14) and fiwelvetrels and Ward (1910) A total of

four ore-bodies were repormiddotted all of which were parnllel

strik ng NNW and steeply tlipfing The rost important lodes

ore No 1 (Main) ftnd No 3 (Gurnj_Els) Nos 2 nnd 4 were of

11ttle economic importance Valler describ(~d VIC lodcs as

well doff ned fismre formmiddotti one

The ore was reported 10 comliot of g81enand a leodshy

antiJrony SUlp11ide (re erred to as jarnesoni te) with pfrie

in a gangne of ioerimiddotto md quortz AccoTf1inglo WaIler one

of the richest ore shoots discovHred in the Zeehatl ltliatrict

oocurrsc1 in the l1inin Lode in Page and [loDermottts Jorkings

The ore in thiltl shoot renched a maximum width of 16 feet ana

the leJlgl~h of ~he shoot was reported to be 400 feet WalleI

86

esttmated DppIoxirrltrt l )ly two-tl-drde of ~Ilc~ ore to be galena

Ri~ports in1icate thaL the silver content of th ore

vlrjed connider~tblyhr()llghout the mine but =Lt woulcl apreac

from th~~ avatlllble fi lturea that tho average aUvcr con L(mt

of the ore Nas of the order of 100 ozeper ton TwelvetrHGc

and WeIrd nocl a cnrreltion between high BDver ana imtimony

content8 in the ore and Twelvetrees (1901a) refcrted that

some rich untimonhtl-leail ore neayed ov(~r ~) ODe) ozs of

silver ler ton in-ITer (op ci t) staterl thattho ntimony

content of ho ore WGf-J higher in upfer levels rtnc1 that

psrtte increq~ec1 in abUDrlmce at lOer levels

ThepreS6flce of small Cluntt tje~1 of argentitc flsfjociaterl

ttl _ 1 l~rjteI

CO-~ ~ revmiddotr~middotJ1J brt1Pemiddott+e~gtJ (1910) t-lmiddotJ~eClmnI) ~ imiddotr lmiddoto1 lmiddotJtt ~1Jmiddot ~l ~~O

(X235P52) tnlhe T(sm9nian Museum colloction confirms this

recurt This ~-)pecimen which Hl originc1lly in the W 1

Pettord col1ection contnins patches of rlrgcntite up to 3cm

x 2cm occurring ~lS thin films on ~ddlrt Ca 111088 of galena

covell~lte and lwrttC dt1iin lihe arge1titc flere noted in

polished section

Pett~erll (op cit p9 ) Chl0 recoriled the presence of

mltive antimony nil thin rillfJ~tjng patches about 811 inch

ln (Hameter irnplantec1 on H si l1Coovs matr-Ix tt T~jf) ikntt shy

fic~~ljon mal be ttnrl-iable as a sicoimcn from PettorO to col-

lectiton (now eclmen no Xf17 in -thCl lHDInnian V)USCWfi Col1ecshy

h nqt l n(lI 1 0 U ~ -ion)J lltbi1 rlt) J __ ~ J ~ IPJ11 -l4V(J 41~14monyVL Unmiddotmiddotmiddotbmiddotnnw t~~~Jbn9

1dmtified flO EJtHmite In Ihe abtHmce of any reports of

n bullJ v Q timiddoton1 dgtro 711 () rgtlfj bullbullf _ in +lC~I 14O~~J ~han bull no rnV(J

i

~~lj I~l )~ -1 bull 10l1 L tle~Jc ibull it

e lik-]middot lllt 1111 Cl-ITIOYl i ~ro ~t ( r poi cy fJ 1 - J IJdJP ~y t) no

87

Ietterd (opeit) also liste( small amounts of the secondary

minerals ke1mesi te and atjblconite in the Spray workingth

The gOS3ftfi outcrop of Gurniemiddot s Lode at trw tcrp of the

Spray Hill wao reported h~ ~rw)lvetrees and Nard (1910) to

be rich in naltive silver and silver chlor14n

Sr9cimens of ore in thc) tt1rlSmtln1anMuseum collectt on

fnd rtt9tertal collected from the tmrfaee dumps near the

lJorkj ngs were found to contain boulangerite galcma pyri te

and 9phalerite atl the-major metallic corJst1tttents in a

gIFtUg119 of aideri teurol Imd (lUJ)rtz Minor cOflsti tuents irlentified

in l)olisrH~dsectjonB were arsenopyrite tetlahedrl ta bourshy

nordta ehale~pyrite rnd pyrrl1oti ie T1H pIoportions of

the v~ril)lJs cOlUrtituents nhow 0 cOrlsideehle vUriation

between flpec1mens

Stil1wel1 (1947) (lesoribedsome npecimens from the

S~ray Mtue andtlHSlre i~J good agreement between Stil1well 8

deeeri pt1ons and the Beeimens exrunined in this investigation

All of the rninera1a and feaures de~lcrfbed by Stil1wel1 hOva

been observed and s(ma~ ~~dditiol1alminen~la (bournonlte and

pyrrhotite) have been noted Sphalerimiddotte is considerably

more aburldant in some of tihase specimenathan 1n tllOse

described by SIil1wel1

Boulan~erita wlieh istho most abundarrt ore rrdneral in

the sulle of opecif)en8 examined replesena t~je Inineral reshy

farred to Q8 jilmcsonite in many eerljer nccountg of the

geology d~ thn Zeehnn area Theproperties and identifictltion

ObL ~l ho~lQn()Iri~ ~~ lttT 11ltigt~crlj(bull Lsewneret ( PlO1011) orne~t L ( I ~~ S

88

specimens of ore (etg 1202) consist essentlally of rrtaseive

boulallgi~rite with minor aliOunts of tetrnhedrito gmlema

bournonitat pyrite RllG arsenopri to ~prescnt as inclu8l ona

INittdn th~~ boulangegtrite fIetraheltiri te is fl comrlOfl assooshy

late of the llOulan eri te in these specimens and in ono

sarrlple (1 50) constitutes apIuoximately 10 of the ore The

size of the tmlivilu81 areas of ter-rahedrite within the

boulangenite rftLngf from very Ftne up to O 25mrn 2l1f1 the

tlLxturul rc~lBiionahip suggGSts thst ie1rahedrite hrupound undeI shy

ponepartial replacement by boulrmgertte frhe fremiddot~uenoy of

middotthe fU38ernblJge bOl)I~ngerite-tetrnlHedrito io in Iteeplng Iidth

the ohservtation of tltel vetrees and Ward (1910) that h1gh

silver valuog were often related to hilth antimollY content

in ore from the SPlI~y iine

ECHJI~~lnged ta alf3o occurs throughout much 01 the 813erite

gengue SJJmiddot fine rod-li ke (md nasdle-11ke crys tal~ (eg P 181)

lt ~Wimiddottlt the longthe of ihe individual crystals rarely exceeding

O05mm fhese fin(~ cryfdals ar~ common in sm~111 clusters

lEUld velnleta and ()cctudcmally merge to form areas consi~3ting

of mFUfH~S of thfHH3 ftne ftroa~Jf and nnEHtl1es u (Plate ~59No 1)

fli(J vdltlth of the individual mamdve HreaEl reoches a mflximum

OT evE~ral centimetres (Si P 00)

GHlena is leSfl atl11ndantmiddot than boult3ngerite in tlH~se

spocimens and 2H rsrely observed lfUihout some aHwciated

k 1 J f 1 ( on 1(~)t )Ut)Vd angen e E~ argor CUeuroUJS 0 ga~3Fl e J J) ~re

up to sEnreral ce1ttmetres in overill l11i dth I~nd are surrounded

by gangnet nnd cont]in 1~j_ne inclusions of boulHngeri ta

- -------------------------------- ------

89shy

tetr51hedri te sphalerita pyrl te and arsenopyri te Grdena

~lao oonurs ~l8 freqlltmt fine (O01-007mm) 1ncluslons

of irregular outline within 1he maas1ve houlangeri tee

130urnoni te focrns sm11 irrerularly-shaped pt~tehm

within the massive boulangarite the overall width ()f these

inclnsions ranging from O025mrn ul) to O )rnm A small

amount of hournonite W~JS also observed as nstrrow veinlete

(oOOmm to O015mm jn v1dth) in Sl)hsJeri te and pyr1 te

(P 196) bull Cbaleopyri t( t tertrahe(1rite tmd galena are Jgtresent

pound$ inelusiona within the bournonite in these veinlemiddotts

Pllite and arsenopyri te are Invjuiahly associated hut

in VtiriOttS prop()rtions and occur as idiomorrhie and 6ubidshy

iomorphic crYHtala di flseminated through the other sLlphides

and tllr~ gnngtte Masavs areas up 10 several centimetres in

i1idth 8re alao resent (eg middotP H39 192) in ~ome speclmens

In tle[H~ l3reas pyri to is generally the lJl()re alnlndarrt of the

two rninerals but occasionally arEHt101)yrito ia the matn conshy

sti tuantThe in(1jviduol erystnlG of each mineral range from

O01rmn up to O 5r1l Both minereh1 have apparerltly undershy

one ext~cnsive replacement by boulatlgerite gaJsna tetrashy

hedrite nrdl bournQnite and partinl replacernent by sphaJerif(2)o

J3cmlarlgeri te temiddottrahettrimiddotte and gal~~na occupy trrtorsti tial

areas in the m~lSt3ive pyr1te and arsenopyrite liltla also occur

as fine inclusionn and veLnle~s withinthese minerals

middot~hltlari+ll Cl nblimiddotd middot in ~Omiddot1middotp -)ir1lt~nr1 (Q 1) 18middot 191)- i~L~gt ~ bull ~ v JJ c1 JL) c~tj J 71 (1 l-~~ ~v bullt~~t~ ~~)t t le

but is absent or rare in others In hand specimen te sJihalshy

arife ia moderately dark

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 9: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

82

~flhe gelena i~3 ric) in inclusions of bou13n~erlte and

inclnsiollS ofte-trchedri te and bOUXtlOl1i te Elre rllao common

I1lC bonlaneri-te occurs as fine needle-l1ke bodies riwging

in length from OOf)2mrn up to O08mm Thena shmv an even

distribution through most of ihe gcllena but are occasionally

conoentratef~ inmiddotto erneI1 pfttches (up to O3mm in width) eonshy

slstillg of cllJBters ofthef-Je tine needles Tetrohedri to is

leGs evenly dist~rHUted and occurs as irregolarly shaped

bodje~3 ran~inf5 in overall w1dth from O01mrn to O075mrn

These t0trahedri te bodies always occur tn the alena but are

freiuently observHd on the borders of sphalerite inclusions

in the galena Bournoni te is present inmiddotthe palcf1m as very

fine bodies COITIWOn and evenly diatr111uted ioP 34 hut less

_ 343common Ifl 1~ bull PleCle bocH-ea clre getlerally roil-like or

round in Bhnpe gltlou~h it ia quj te lihely that many of the

rouni~ hodi(~s are merely eross-secmiddottions of rod-li1H2J bodies

Th 1 - lhrJ 0 tmiddot1Ilt1lt 11 vJr1 f 011 0 (10)1n t Omiddot ()15-m ndv vt~iU-- 1 tA Ij- LJ3 middot~O t4 ~ 1 bull tmiddotv v bull middotLmiddot9 ttmiddotmiddot

tho diameters of the round boriies rnge from O 001mm to

O005rm1 In 12342 SOftie of the bourmmite tnclttsions dnow

) M(lnl~ltmiddot j r middotmiddotymiddot~tnmiddott IF -lj 3J rn-tJ 1middot -Ftl lt~ en(~ ~~ ampi- ~ A - 17- 1_bull ~_ gt l~J ~ bull v tt J v P 1 v~t-l v JIJ (Jr ~~) ~ J Ql bull

Pyrtte is not common in the coarse gf~Jgteila where 11

occurs only ao vcry SIWJll1 (o 01ryn) idiornor(c cr~i8tals

which appear 1~o have hCEm eXtelh3i vely rejh)cel by the gn1ena

P~lrite is 8 lit~middottle morc common ln the sph11erite-rich ore

where it olcurs in tllC1 mCSrlive SphD lerl te as ldiomoIgthic

lYltmiddot1~ (0 Omiddot1rT t r Q O~~l) middot-amiddotr -tIn r 4middot Cl J 1y r )middotmiddotlmiddotcl by~ ~t~ (I)lJgt f~_1 gtt ~ 11 ~lJ1Jc~ llWtA J t-(ci 1-- ~j__ ~Cgtj~

83

the aphalerito

Sphelertte occurs tn tiQ coarse galena nD fJllall nref~S

wldc 1 appear to have boon ClXtOU i v(~ly rp1nced The 3120

of Chost) 1ufLntol1 rtr() y exceeds O1mn The cpecimens

Oof rlltHJve~ ~ln)J)e-vgt S~j P-lt 3444(~) CJ_ - 011110~- ~I ~~~~~~~J~ ~~ _ ) 0ouiflt ( ~ e~11rAly gtJ

of fl)llalelt gt 71th sID11 f3ffiOUn (~) ofu rtz gCH1gUG Jhe

E1p1l~lorj -to 11 modorately dxk tn hnnd BPOC1I1n

Minor nmount~J of Br-Ionl occur l OUg10Ut t1o spht~lertte

DS mloll 1rrcgvJr1rly 11)011 PflliChes t ntrell grenter than

C25mm in overclll width rrhbJ BlI a ap (~nrsto rOl)reemlt

Jncident Toacmnmiddotnt of 1ihe sphalerito

C1H1 COT7~ -j ] a] 0 ~lsrgtY1of- 11 )OJI1 ~middotlmiddotn-q 0-( ~he- JtJJ1u ~ lt) t-v middot l]U - (~-r h~ f I~ ~

SPHiJ erito ClS ex-tremely minute blobs moot of which (IO 10sa

than O0005mmOl in size am1 ~Jhow rnnclom oriontabion Some

minute bleba in thene nrE)rS may be pyrrhoti-be but the fine

naturo prevents procise idClTjfication

84

ASDCll1blape t

of ore bull

minerelsr

Common 13oulangClt-i0 - goJena Gona - sphnleri-te G~lena - tetrahoc1rj to Bournonie - galena Plri to - sjhalerlte

Infra l1ent Boulangeri te - bournonite - galena n01l1nnfJ~eite - gelona - sphalerite Boulangeritc - galena - tctrahedrito ChHlcoPJrrtte - sphnlerite Cklena - pyrito ~~lftn~ ~urit~middot A-~1D~i~middot~_~V_ c -shy JJ t~ - 0L~oC4-j~1 llo G-rltlema - f3pbi~l()ri to - tetrrec1rite

Uue BournoniLe - gDIena - spJolerite Galena -write - sp7Jn1erite - tetrahe(lri~E

f3S

Spray Mine

The rnaln worlring0 of the Spray [)iine are located on the

nor1l~ern slopes of Spray Hill south of manganese Hill and

on the southern side of the Comstock trern formation

The host rocks of the ore-bodies are quartzi toe ond

slflOB of the Oonahllartzite and Slate (BliElBstt 1962)

A(cording to WaIler (19(4) the Main Lode cont1nued north

and entered rocks which Bllssett (1962) oonsiderfJ to be

prohably pori oftihG Cambri9n Crimson Creek Formation

~111er oboe ved thot the lode was produotive onl in the

Jreoombrlan quartzite and sl0te as the workings in the

Carnbrian rockswere shallow nnlllhe ore completely oxidized

Detailed descriptions of the workings were given by

WaIler (19(14) and fiwelvetrels and Ward (1910) A total of

four ore-bodies were repormiddotted all of which were parnllel

strik ng NNW and steeply tlipfing The rost important lodes

ore No 1 (Main) ftnd No 3 (Gurnj_Els) Nos 2 nnd 4 were of

11ttle economic importance Valler describ(~d VIC lodcs as

well doff ned fismre formmiddotti one

The ore was reported 10 comliot of g81enand a leodshy

antiJrony SUlp11ide (re erred to as jarnesoni te) with pfrie

in a gangne of ioerimiddotto md quortz AccoTf1inglo WaIler one

of the richest ore shoots discovHred in the Zeehatl ltliatrict

oocurrsc1 in the l1inin Lode in Page and [loDermottts Jorkings

The ore in thiltl shoot renched a maximum width of 16 feet ana

the leJlgl~h of ~he shoot was reported to be 400 feet WalleI

86

esttmated DppIoxirrltrt l )ly two-tl-drde of ~Ilc~ ore to be galena

Ri~ports in1icate thaL the silver content of th ore

vlrjed connider~tblyhr()llghout the mine but =Lt woulcl apreac

from th~~ avatlllble fi lturea that tho average aUvcr con L(mt

of the ore Nas of the order of 100 ozeper ton TwelvetrHGc

and WeIrd nocl a cnrreltion between high BDver ana imtimony

content8 in the ore and Twelvetrees (1901a) refcrted that

some rich untimonhtl-leail ore neayed ov(~r ~) ODe) ozs of

silver ler ton in-ITer (op ci t) staterl thattho ntimony

content of ho ore WGf-J higher in upfer levels rtnc1 that

psrtte increq~ec1 in abUDrlmce at lOer levels

ThepreS6flce of small Cluntt tje~1 of argentitc flsfjociaterl

ttl _ 1 l~rjteI

CO-~ ~ revmiddotr~middotJ1J brt1Pemiddott+e~gtJ (1910) t-lmiddotJ~eClmnI) ~ imiddotr lmiddoto1 lmiddotJtt ~1Jmiddot ~l ~~O

(X235P52) tnlhe T(sm9nian Museum colloction confirms this

recurt This ~-)pecimen which Hl originc1lly in the W 1

Pettord col1ection contnins patches of rlrgcntite up to 3cm

x 2cm occurring ~lS thin films on ~ddlrt Ca 111088 of galena

covell~lte and lwrttC dt1iin lihe arge1titc flere noted in

polished section

Pett~erll (op cit p9 ) Chl0 recoriled the presence of

mltive antimony nil thin rillfJ~tjng patches about 811 inch

ln (Hameter irnplantec1 on H si l1Coovs matr-Ix tt T~jf) ikntt shy

fic~~ljon mal be ttnrl-iable as a sicoimcn from PettorO to col-

lectiton (now eclmen no Xf17 in -thCl lHDInnian V)USCWfi Col1ecshy

h nqt l n(lI 1 0 U ~ -ion)J lltbi1 rlt) J __ ~ J ~ IPJ11 -l4V(J 41~14monyVL Unmiddotmiddotmiddotbmiddotnnw t~~~Jbn9

1dmtified flO EJtHmite In Ihe abtHmce of any reports of

n bullJ v Q timiddoton1 dgtro 711 () rgtlfj bullbullf _ in +lC~I 14O~~J ~han bull no rnV(J

i

~~lj I~l )~ -1 bull 10l1 L tle~Jc ibull it

e lik-]middot lllt 1111 Cl-ITIOYl i ~ro ~t ( r poi cy fJ 1 - J IJdJP ~y t) no

87

Ietterd (opeit) also liste( small amounts of the secondary

minerals ke1mesi te and atjblconite in the Spray workingth

The gOS3ftfi outcrop of Gurniemiddot s Lode at trw tcrp of the

Spray Hill wao reported h~ ~rw)lvetrees and Nard (1910) to

be rich in naltive silver and silver chlor14n

Sr9cimens of ore in thc) tt1rlSmtln1anMuseum collectt on

fnd rtt9tertal collected from the tmrfaee dumps near the

lJorkj ngs were found to contain boulangerite galcma pyri te

and 9phalerite atl the-major metallic corJst1tttents in a

gIFtUg119 of aideri teurol Imd (lUJ)rtz Minor cOflsti tuents irlentified

in l)olisrH~dsectjonB were arsenopyrite tetlahedrl ta bourshy

nordta ehale~pyrite rnd pyrrl1oti ie T1H pIoportions of

the v~ril)lJs cOlUrtituents nhow 0 cOrlsideehle vUriation

between flpec1mens

Stil1wel1 (1947) (lesoribedsome npecimens from the

S~ray Mtue andtlHSlre i~J good agreement between Stil1well 8

deeeri pt1ons and the Beeimens exrunined in this investigation

All of the rninera1a and feaures de~lcrfbed by Stil1wel1 hOva

been observed and s(ma~ ~~dditiol1alminen~la (bournonlte and

pyrrhotite) have been noted Sphalerimiddotte is considerably

more aburldant in some of tihase specimenathan 1n tllOse

described by SIil1wel1

Boulan~erita wlieh istho most abundarrt ore rrdneral in

the sulle of opecif)en8 examined replesena t~je Inineral reshy

farred to Q8 jilmcsonite in many eerljer nccountg of the

geology d~ thn Zeehnn area Theproperties and identifictltion

ObL ~l ho~lQn()Iri~ ~~ lttT 11ltigt~crlj(bull Lsewneret ( PlO1011) orne~t L ( I ~~ S

88

specimens of ore (etg 1202) consist essentlally of rrtaseive

boulallgi~rite with minor aliOunts of tetrnhedrito gmlema

bournonitat pyrite RllG arsenopri to ~prescnt as inclu8l ona

INittdn th~~ boulangegtrite fIetraheltiri te is fl comrlOfl assooshy

late of the llOulan eri te in these specimens and in ono

sarrlple (1 50) constitutes apIuoximately 10 of the ore The

size of the tmlivilu81 areas of ter-rahedrite within the

boulangenite rftLngf from very Ftne up to O 25mrn 2l1f1 the

tlLxturul rc~lBiionahip suggGSts thst ie1rahedrite hrupound undeI shy

ponepartial replacement by boulrmgertte frhe fremiddot~uenoy of

middotthe fU38ernblJge bOl)I~ngerite-tetrnlHedrito io in Iteeplng Iidth

the ohservtation of tltel vetrees and Ward (1910) that h1gh

silver valuog were often related to hilth antimollY content

in ore from the SPlI~y iine

ECHJI~~lnged ta alf3o occurs throughout much 01 the 813erite

gengue SJJmiddot fine rod-li ke (md nasdle-11ke crys tal~ (eg P 181)

lt ~Wimiddottlt the longthe of ihe individual crystals rarely exceeding

O05mm fhese fin(~ cryfdals ar~ common in sm~111 clusters

lEUld velnleta and ()cctudcmally merge to form areas consi~3ting

of mFUfH~S of thfHH3 ftne ftroa~Jf and nnEHtl1es u (Plate ~59No 1)

fli(J vdltlth of the individual mamdve HreaEl reoches a mflximum

OT evE~ral centimetres (Si P 00)

GHlena is leSfl atl11ndantmiddot than boult3ngerite in tlH~se

spocimens and 2H rsrely observed lfUihout some aHwciated

k 1 J f 1 ( on 1(~)t )Ut)Vd angen e E~ argor CUeuroUJS 0 ga~3Fl e J J) ~re

up to sEnreral ce1ttmetres in overill l11i dth I~nd are surrounded

by gangnet nnd cont]in 1~j_ne inclusions of boulHngeri ta

- -------------------------------- ------

89shy

tetr51hedri te sphalerita pyrl te and arsenopyri te Grdena

~lao oonurs ~l8 freqlltmt fine (O01-007mm) 1ncluslons

of irregular outline within 1he maas1ve houlangeri tee

130urnoni te focrns sm11 irrerularly-shaped pt~tehm

within the massive boulangarite the overall width ()f these

inclnsions ranging from O025mrn ul) to O )rnm A small

amount of hournonite W~JS also observed as nstrrow veinlete

(oOOmm to O015mm jn v1dth) in Sl)hsJeri te and pyr1 te

(P 196) bull Cbaleopyri t( t tertrahe(1rite tmd galena are Jgtresent

pound$ inelusiona within the bournonite in these veinlemiddotts

Pllite and arsenopyri te are Invjuiahly associated hut

in VtiriOttS prop()rtions and occur as idiomorrhie and 6ubidshy

iomorphic crYHtala di flseminated through the other sLlphides

and tllr~ gnngtte Masavs areas up 10 several centimetres in

i1idth 8re alao resent (eg middotP H39 192) in ~ome speclmens

In tle[H~ l3reas pyri to is generally the lJl()re alnlndarrt of the

two rninerals but occasionally arEHt101)yrito ia the matn conshy

sti tuantThe in(1jviduol erystnlG of each mineral range from

O01rmn up to O 5r1l Both minereh1 have apparerltly undershy

one ext~cnsive replacement by boulatlgerite gaJsna tetrashy

hedrite nrdl bournQnite and partinl replacernent by sphaJerif(2)o

J3cmlarlgeri te temiddottrahettrimiddotte and gal~~na occupy trrtorsti tial

areas in the m~lSt3ive pyr1te and arsenopyrite liltla also occur

as fine inclusionn and veLnle~s withinthese minerals

middot~hltlari+ll Cl nblimiddotd middot in ~Omiddot1middotp -)ir1lt~nr1 (Q 1) 18middot 191)- i~L~gt ~ bull ~ v JJ c1 JL) c~tj J 71 (1 l-~~ ~v bullt~~t~ ~~)t t le

but is absent or rare in others In hand specimen te sJihalshy

arife ia moderately dark

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 10: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

83

the aphalerito

Sphelertte occurs tn tiQ coarse galena nD fJllall nref~S

wldc 1 appear to have boon ClXtOU i v(~ly rp1nced The 3120

of Chost) 1ufLntol1 rtr() y exceeds O1mn The cpecimens

Oof rlltHJve~ ~ln)J)e-vgt S~j P-lt 3444(~) CJ_ - 011110~- ~I ~~~~~~~J~ ~~ _ ) 0ouiflt ( ~ e~11rAly gtJ

of fl)llalelt gt 71th sID11 f3ffiOUn (~) ofu rtz gCH1gUG Jhe

E1p1l~lorj -to 11 modorately dxk tn hnnd BPOC1I1n

Minor nmount~J of Br-Ionl occur l OUg10Ut t1o spht~lertte

DS mloll 1rrcgvJr1rly 11)011 PflliChes t ntrell grenter than

C25mm in overclll width rrhbJ BlI a ap (~nrsto rOl)reemlt

Jncident Toacmnmiddotnt of 1ihe sphalerito

C1H1 COT7~ -j ] a] 0 ~lsrgtY1of- 11 )OJI1 ~middotlmiddotn-q 0-( ~he- JtJJ1u ~ lt) t-v middot l]U - (~-r h~ f I~ ~

SPHiJ erito ClS ex-tremely minute blobs moot of which (IO 10sa

than O0005mmOl in size am1 ~Jhow rnnclom oriontabion Some

minute bleba in thene nrE)rS may be pyrrhoti-be but the fine

naturo prevents procise idClTjfication

84

ASDCll1blape t

of ore bull

minerelsr

Common 13oulangClt-i0 - goJena Gona - sphnleri-te G~lena - tetrahoc1rj to Bournonie - galena Plri to - sjhalerlte

Infra l1ent Boulangeri te - bournonite - galena n01l1nnfJ~eite - gelona - sphalerite Boulangeritc - galena - tctrahedrito ChHlcoPJrrtte - sphnlerite Cklena - pyrito ~~lftn~ ~urit~middot A-~1D~i~middot~_~V_ c -shy JJ t~ - 0L~oC4-j~1 llo G-rltlema - f3pbi~l()ri to - tetrrec1rite

Uue BournoniLe - gDIena - spJolerite Galena -write - sp7Jn1erite - tetrahe(lri~E

f3S

Spray Mine

The rnaln worlring0 of the Spray [)iine are located on the

nor1l~ern slopes of Spray Hill south of manganese Hill and

on the southern side of the Comstock trern formation

The host rocks of the ore-bodies are quartzi toe ond

slflOB of the Oonahllartzite and Slate (BliElBstt 1962)

A(cording to WaIler (19(4) the Main Lode cont1nued north

and entered rocks which Bllssett (1962) oonsiderfJ to be

prohably pori oftihG Cambri9n Crimson Creek Formation

~111er oboe ved thot the lode was produotive onl in the

Jreoombrlan quartzite and sl0te as the workings in the

Carnbrian rockswere shallow nnlllhe ore completely oxidized

Detailed descriptions of the workings were given by

WaIler (19(14) and fiwelvetrels and Ward (1910) A total of

four ore-bodies were repormiddotted all of which were parnllel

strik ng NNW and steeply tlipfing The rost important lodes

ore No 1 (Main) ftnd No 3 (Gurnj_Els) Nos 2 nnd 4 were of

11ttle economic importance Valler describ(~d VIC lodcs as

well doff ned fismre formmiddotti one

The ore was reported 10 comliot of g81enand a leodshy

antiJrony SUlp11ide (re erred to as jarnesoni te) with pfrie

in a gangne of ioerimiddotto md quortz AccoTf1inglo WaIler one

of the richest ore shoots discovHred in the Zeehatl ltliatrict

oocurrsc1 in the l1inin Lode in Page and [loDermottts Jorkings

The ore in thiltl shoot renched a maximum width of 16 feet ana

the leJlgl~h of ~he shoot was reported to be 400 feet WalleI

86

esttmated DppIoxirrltrt l )ly two-tl-drde of ~Ilc~ ore to be galena

Ri~ports in1icate thaL the silver content of th ore

vlrjed connider~tblyhr()llghout the mine but =Lt woulcl apreac

from th~~ avatlllble fi lturea that tho average aUvcr con L(mt

of the ore Nas of the order of 100 ozeper ton TwelvetrHGc

and WeIrd nocl a cnrreltion between high BDver ana imtimony

content8 in the ore and Twelvetrees (1901a) refcrted that

some rich untimonhtl-leail ore neayed ov(~r ~) ODe) ozs of

silver ler ton in-ITer (op ci t) staterl thattho ntimony

content of ho ore WGf-J higher in upfer levels rtnc1 that

psrtte increq~ec1 in abUDrlmce at lOer levels

ThepreS6flce of small Cluntt tje~1 of argentitc flsfjociaterl

ttl _ 1 l~rjteI

CO-~ ~ revmiddotr~middotJ1J brt1Pemiddott+e~gtJ (1910) t-lmiddotJ~eClmnI) ~ imiddotr lmiddoto1 lmiddotJtt ~1Jmiddot ~l ~~O

(X235P52) tnlhe T(sm9nian Museum colloction confirms this

recurt This ~-)pecimen which Hl originc1lly in the W 1

Pettord col1ection contnins patches of rlrgcntite up to 3cm

x 2cm occurring ~lS thin films on ~ddlrt Ca 111088 of galena

covell~lte and lwrttC dt1iin lihe arge1titc flere noted in

polished section

Pett~erll (op cit p9 ) Chl0 recoriled the presence of

mltive antimony nil thin rillfJ~tjng patches about 811 inch

ln (Hameter irnplantec1 on H si l1Coovs matr-Ix tt T~jf) ikntt shy

fic~~ljon mal be ttnrl-iable as a sicoimcn from PettorO to col-

lectiton (now eclmen no Xf17 in -thCl lHDInnian V)USCWfi Col1ecshy

h nqt l n(lI 1 0 U ~ -ion)J lltbi1 rlt) J __ ~ J ~ IPJ11 -l4V(J 41~14monyVL Unmiddotmiddotmiddotbmiddotnnw t~~~Jbn9

1dmtified flO EJtHmite In Ihe abtHmce of any reports of

n bullJ v Q timiddoton1 dgtro 711 () rgtlfj bullbullf _ in +lC~I 14O~~J ~han bull no rnV(J

i

~~lj I~l )~ -1 bull 10l1 L tle~Jc ibull it

e lik-]middot lllt 1111 Cl-ITIOYl i ~ro ~t ( r poi cy fJ 1 - J IJdJP ~y t) no

87

Ietterd (opeit) also liste( small amounts of the secondary

minerals ke1mesi te and atjblconite in the Spray workingth

The gOS3ftfi outcrop of Gurniemiddot s Lode at trw tcrp of the

Spray Hill wao reported h~ ~rw)lvetrees and Nard (1910) to

be rich in naltive silver and silver chlor14n

Sr9cimens of ore in thc) tt1rlSmtln1anMuseum collectt on

fnd rtt9tertal collected from the tmrfaee dumps near the

lJorkj ngs were found to contain boulangerite galcma pyri te

and 9phalerite atl the-major metallic corJst1tttents in a

gIFtUg119 of aideri teurol Imd (lUJ)rtz Minor cOflsti tuents irlentified

in l)olisrH~dsectjonB were arsenopyrite tetlahedrl ta bourshy

nordta ehale~pyrite rnd pyrrl1oti ie T1H pIoportions of

the v~ril)lJs cOlUrtituents nhow 0 cOrlsideehle vUriation

between flpec1mens

Stil1wel1 (1947) (lesoribedsome npecimens from the

S~ray Mtue andtlHSlre i~J good agreement between Stil1well 8

deeeri pt1ons and the Beeimens exrunined in this investigation

All of the rninera1a and feaures de~lcrfbed by Stil1wel1 hOva

been observed and s(ma~ ~~dditiol1alminen~la (bournonlte and

pyrrhotite) have been noted Sphalerimiddotte is considerably

more aburldant in some of tihase specimenathan 1n tllOse

described by SIil1wel1

Boulan~erita wlieh istho most abundarrt ore rrdneral in

the sulle of opecif)en8 examined replesena t~je Inineral reshy

farred to Q8 jilmcsonite in many eerljer nccountg of the

geology d~ thn Zeehnn area Theproperties and identifictltion

ObL ~l ho~lQn()Iri~ ~~ lttT 11ltigt~crlj(bull Lsewneret ( PlO1011) orne~t L ( I ~~ S

88

specimens of ore (etg 1202) consist essentlally of rrtaseive

boulallgi~rite with minor aliOunts of tetrnhedrito gmlema

bournonitat pyrite RllG arsenopri to ~prescnt as inclu8l ona

INittdn th~~ boulangegtrite fIetraheltiri te is fl comrlOfl assooshy

late of the llOulan eri te in these specimens and in ono

sarrlple (1 50) constitutes apIuoximately 10 of the ore The

size of the tmlivilu81 areas of ter-rahedrite within the

boulangenite rftLngf from very Ftne up to O 25mrn 2l1f1 the

tlLxturul rc~lBiionahip suggGSts thst ie1rahedrite hrupound undeI shy

ponepartial replacement by boulrmgertte frhe fremiddot~uenoy of

middotthe fU38ernblJge bOl)I~ngerite-tetrnlHedrito io in Iteeplng Iidth

the ohservtation of tltel vetrees and Ward (1910) that h1gh

silver valuog were often related to hilth antimollY content

in ore from the SPlI~y iine

ECHJI~~lnged ta alf3o occurs throughout much 01 the 813erite

gengue SJJmiddot fine rod-li ke (md nasdle-11ke crys tal~ (eg P 181)

lt ~Wimiddottlt the longthe of ihe individual crystals rarely exceeding

O05mm fhese fin(~ cryfdals ar~ common in sm~111 clusters

lEUld velnleta and ()cctudcmally merge to form areas consi~3ting

of mFUfH~S of thfHH3 ftne ftroa~Jf and nnEHtl1es u (Plate ~59No 1)

fli(J vdltlth of the individual mamdve HreaEl reoches a mflximum

OT evE~ral centimetres (Si P 00)

GHlena is leSfl atl11ndantmiddot than boult3ngerite in tlH~se

spocimens and 2H rsrely observed lfUihout some aHwciated

k 1 J f 1 ( on 1(~)t )Ut)Vd angen e E~ argor CUeuroUJS 0 ga~3Fl e J J) ~re

up to sEnreral ce1ttmetres in overill l11i dth I~nd are surrounded

by gangnet nnd cont]in 1~j_ne inclusions of boulHngeri ta

- -------------------------------- ------

89shy

tetr51hedri te sphalerita pyrl te and arsenopyri te Grdena

~lao oonurs ~l8 freqlltmt fine (O01-007mm) 1ncluslons

of irregular outline within 1he maas1ve houlangeri tee

130urnoni te focrns sm11 irrerularly-shaped pt~tehm

within the massive boulangarite the overall width ()f these

inclnsions ranging from O025mrn ul) to O )rnm A small

amount of hournonite W~JS also observed as nstrrow veinlete

(oOOmm to O015mm jn v1dth) in Sl)hsJeri te and pyr1 te

(P 196) bull Cbaleopyri t( t tertrahe(1rite tmd galena are Jgtresent

pound$ inelusiona within the bournonite in these veinlemiddotts

Pllite and arsenopyri te are Invjuiahly associated hut

in VtiriOttS prop()rtions and occur as idiomorrhie and 6ubidshy

iomorphic crYHtala di flseminated through the other sLlphides

and tllr~ gnngtte Masavs areas up 10 several centimetres in

i1idth 8re alao resent (eg middotP H39 192) in ~ome speclmens

In tle[H~ l3reas pyri to is generally the lJl()re alnlndarrt of the

two rninerals but occasionally arEHt101)yrito ia the matn conshy

sti tuantThe in(1jviduol erystnlG of each mineral range from

O01rmn up to O 5r1l Both minereh1 have apparerltly undershy

one ext~cnsive replacement by boulatlgerite gaJsna tetrashy

hedrite nrdl bournQnite and partinl replacernent by sphaJerif(2)o

J3cmlarlgeri te temiddottrahettrimiddotte and gal~~na occupy trrtorsti tial

areas in the m~lSt3ive pyr1te and arsenopyrite liltla also occur

as fine inclusionn and veLnle~s withinthese minerals

middot~hltlari+ll Cl nblimiddotd middot in ~Omiddot1middotp -)ir1lt~nr1 (Q 1) 18middot 191)- i~L~gt ~ bull ~ v JJ c1 JL) c~tj J 71 (1 l-~~ ~v bullt~~t~ ~~)t t le

but is absent or rare in others In hand specimen te sJihalshy

arife ia moderately dark

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 11: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

84

ASDCll1blape t

of ore bull

minerelsr

Common 13oulangClt-i0 - goJena Gona - sphnleri-te G~lena - tetrahoc1rj to Bournonie - galena Plri to - sjhalerlte

Infra l1ent Boulangeri te - bournonite - galena n01l1nnfJ~eite - gelona - sphalerite Boulangeritc - galena - tctrahedrito ChHlcoPJrrtte - sphnlerite Cklena - pyrito ~~lftn~ ~urit~middot A-~1D~i~middot~_~V_ c -shy JJ t~ - 0L~oC4-j~1 llo G-rltlema - f3pbi~l()ri to - tetrrec1rite

Uue BournoniLe - gDIena - spJolerite Galena -write - sp7Jn1erite - tetrahe(lri~E

f3S

Spray Mine

The rnaln worlring0 of the Spray [)iine are located on the

nor1l~ern slopes of Spray Hill south of manganese Hill and

on the southern side of the Comstock trern formation

The host rocks of the ore-bodies are quartzi toe ond

slflOB of the Oonahllartzite and Slate (BliElBstt 1962)

A(cording to WaIler (19(4) the Main Lode cont1nued north

and entered rocks which Bllssett (1962) oonsiderfJ to be

prohably pori oftihG Cambri9n Crimson Creek Formation

~111er oboe ved thot the lode was produotive onl in the

Jreoombrlan quartzite and sl0te as the workings in the

Carnbrian rockswere shallow nnlllhe ore completely oxidized

Detailed descriptions of the workings were given by

WaIler (19(14) and fiwelvetrels and Ward (1910) A total of

four ore-bodies were repormiddotted all of which were parnllel

strik ng NNW and steeply tlipfing The rost important lodes

ore No 1 (Main) ftnd No 3 (Gurnj_Els) Nos 2 nnd 4 were of

11ttle economic importance Valler describ(~d VIC lodcs as

well doff ned fismre formmiddotti one

The ore was reported 10 comliot of g81enand a leodshy

antiJrony SUlp11ide (re erred to as jarnesoni te) with pfrie

in a gangne of ioerimiddotto md quortz AccoTf1inglo WaIler one

of the richest ore shoots discovHred in the Zeehatl ltliatrict

oocurrsc1 in the l1inin Lode in Page and [loDermottts Jorkings

The ore in thiltl shoot renched a maximum width of 16 feet ana

the leJlgl~h of ~he shoot was reported to be 400 feet WalleI

86

esttmated DppIoxirrltrt l )ly two-tl-drde of ~Ilc~ ore to be galena

Ri~ports in1icate thaL the silver content of th ore

vlrjed connider~tblyhr()llghout the mine but =Lt woulcl apreac

from th~~ avatlllble fi lturea that tho average aUvcr con L(mt

of the ore Nas of the order of 100 ozeper ton TwelvetrHGc

and WeIrd nocl a cnrreltion between high BDver ana imtimony

content8 in the ore and Twelvetrees (1901a) refcrted that

some rich untimonhtl-leail ore neayed ov(~r ~) ODe) ozs of

silver ler ton in-ITer (op ci t) staterl thattho ntimony

content of ho ore WGf-J higher in upfer levels rtnc1 that

psrtte increq~ec1 in abUDrlmce at lOer levels

ThepreS6flce of small Cluntt tje~1 of argentitc flsfjociaterl

ttl _ 1 l~rjteI

CO-~ ~ revmiddotr~middotJ1J brt1Pemiddott+e~gtJ (1910) t-lmiddotJ~eClmnI) ~ imiddotr lmiddoto1 lmiddotJtt ~1Jmiddot ~l ~~O

(X235P52) tnlhe T(sm9nian Museum colloction confirms this

recurt This ~-)pecimen which Hl originc1lly in the W 1

Pettord col1ection contnins patches of rlrgcntite up to 3cm

x 2cm occurring ~lS thin films on ~ddlrt Ca 111088 of galena

covell~lte and lwrttC dt1iin lihe arge1titc flere noted in

polished section

Pett~erll (op cit p9 ) Chl0 recoriled the presence of

mltive antimony nil thin rillfJ~tjng patches about 811 inch

ln (Hameter irnplantec1 on H si l1Coovs matr-Ix tt T~jf) ikntt shy

fic~~ljon mal be ttnrl-iable as a sicoimcn from PettorO to col-

lectiton (now eclmen no Xf17 in -thCl lHDInnian V)USCWfi Col1ecshy

h nqt l n(lI 1 0 U ~ -ion)J lltbi1 rlt) J __ ~ J ~ IPJ11 -l4V(J 41~14monyVL Unmiddotmiddotmiddotbmiddotnnw t~~~Jbn9

1dmtified flO EJtHmite In Ihe abtHmce of any reports of

n bullJ v Q timiddoton1 dgtro 711 () rgtlfj bullbullf _ in +lC~I 14O~~J ~han bull no rnV(J

i

~~lj I~l )~ -1 bull 10l1 L tle~Jc ibull it

e lik-]middot lllt 1111 Cl-ITIOYl i ~ro ~t ( r poi cy fJ 1 - J IJdJP ~y t) no

87

Ietterd (opeit) also liste( small amounts of the secondary

minerals ke1mesi te and atjblconite in the Spray workingth

The gOS3ftfi outcrop of Gurniemiddot s Lode at trw tcrp of the

Spray Hill wao reported h~ ~rw)lvetrees and Nard (1910) to

be rich in naltive silver and silver chlor14n

Sr9cimens of ore in thc) tt1rlSmtln1anMuseum collectt on

fnd rtt9tertal collected from the tmrfaee dumps near the

lJorkj ngs were found to contain boulangerite galcma pyri te

and 9phalerite atl the-major metallic corJst1tttents in a

gIFtUg119 of aideri teurol Imd (lUJ)rtz Minor cOflsti tuents irlentified

in l)olisrH~dsectjonB were arsenopyrite tetlahedrl ta bourshy

nordta ehale~pyrite rnd pyrrl1oti ie T1H pIoportions of

the v~ril)lJs cOlUrtituents nhow 0 cOrlsideehle vUriation

between flpec1mens

Stil1wel1 (1947) (lesoribedsome npecimens from the

S~ray Mtue andtlHSlre i~J good agreement between Stil1well 8

deeeri pt1ons and the Beeimens exrunined in this investigation

All of the rninera1a and feaures de~lcrfbed by Stil1wel1 hOva

been observed and s(ma~ ~~dditiol1alminen~la (bournonlte and

pyrrhotite) have been noted Sphalerimiddotte is considerably

more aburldant in some of tihase specimenathan 1n tllOse

described by SIil1wel1

Boulan~erita wlieh istho most abundarrt ore rrdneral in

the sulle of opecif)en8 examined replesena t~je Inineral reshy

farred to Q8 jilmcsonite in many eerljer nccountg of the

geology d~ thn Zeehnn area Theproperties and identifictltion

ObL ~l ho~lQn()Iri~ ~~ lttT 11ltigt~crlj(bull Lsewneret ( PlO1011) orne~t L ( I ~~ S

88

specimens of ore (etg 1202) consist essentlally of rrtaseive

boulallgi~rite with minor aliOunts of tetrnhedrito gmlema

bournonitat pyrite RllG arsenopri to ~prescnt as inclu8l ona

INittdn th~~ boulangegtrite fIetraheltiri te is fl comrlOfl assooshy

late of the llOulan eri te in these specimens and in ono

sarrlple (1 50) constitutes apIuoximately 10 of the ore The

size of the tmlivilu81 areas of ter-rahedrite within the

boulangenite rftLngf from very Ftne up to O 25mrn 2l1f1 the

tlLxturul rc~lBiionahip suggGSts thst ie1rahedrite hrupound undeI shy

ponepartial replacement by boulrmgertte frhe fremiddot~uenoy of

middotthe fU38ernblJge bOl)I~ngerite-tetrnlHedrito io in Iteeplng Iidth

the ohservtation of tltel vetrees and Ward (1910) that h1gh

silver valuog were often related to hilth antimollY content

in ore from the SPlI~y iine

ECHJI~~lnged ta alf3o occurs throughout much 01 the 813erite

gengue SJJmiddot fine rod-li ke (md nasdle-11ke crys tal~ (eg P 181)

lt ~Wimiddottlt the longthe of ihe individual crystals rarely exceeding

O05mm fhese fin(~ cryfdals ar~ common in sm~111 clusters

lEUld velnleta and ()cctudcmally merge to form areas consi~3ting

of mFUfH~S of thfHH3 ftne ftroa~Jf and nnEHtl1es u (Plate ~59No 1)

fli(J vdltlth of the individual mamdve HreaEl reoches a mflximum

OT evE~ral centimetres (Si P 00)

GHlena is leSfl atl11ndantmiddot than boult3ngerite in tlH~se

spocimens and 2H rsrely observed lfUihout some aHwciated

k 1 J f 1 ( on 1(~)t )Ut)Vd angen e E~ argor CUeuroUJS 0 ga~3Fl e J J) ~re

up to sEnreral ce1ttmetres in overill l11i dth I~nd are surrounded

by gangnet nnd cont]in 1~j_ne inclusions of boulHngeri ta

- -------------------------------- ------

89shy

tetr51hedri te sphalerita pyrl te and arsenopyri te Grdena

~lao oonurs ~l8 freqlltmt fine (O01-007mm) 1ncluslons

of irregular outline within 1he maas1ve houlangeri tee

130urnoni te focrns sm11 irrerularly-shaped pt~tehm

within the massive boulangarite the overall width ()f these

inclnsions ranging from O025mrn ul) to O )rnm A small

amount of hournonite W~JS also observed as nstrrow veinlete

(oOOmm to O015mm jn v1dth) in Sl)hsJeri te and pyr1 te

(P 196) bull Cbaleopyri t( t tertrahe(1rite tmd galena are Jgtresent

pound$ inelusiona within the bournonite in these veinlemiddotts

Pllite and arsenopyri te are Invjuiahly associated hut

in VtiriOttS prop()rtions and occur as idiomorrhie and 6ubidshy

iomorphic crYHtala di flseminated through the other sLlphides

and tllr~ gnngtte Masavs areas up 10 several centimetres in

i1idth 8re alao resent (eg middotP H39 192) in ~ome speclmens

In tle[H~ l3reas pyri to is generally the lJl()re alnlndarrt of the

two rninerals but occasionally arEHt101)yrito ia the matn conshy

sti tuantThe in(1jviduol erystnlG of each mineral range from

O01rmn up to O 5r1l Both minereh1 have apparerltly undershy

one ext~cnsive replacement by boulatlgerite gaJsna tetrashy

hedrite nrdl bournQnite and partinl replacernent by sphaJerif(2)o

J3cmlarlgeri te temiddottrahettrimiddotte and gal~~na occupy trrtorsti tial

areas in the m~lSt3ive pyr1te and arsenopyrite liltla also occur

as fine inclusionn and veLnle~s withinthese minerals

middot~hltlari+ll Cl nblimiddotd middot in ~Omiddot1middotp -)ir1lt~nr1 (Q 1) 18middot 191)- i~L~gt ~ bull ~ v JJ c1 JL) c~tj J 71 (1 l-~~ ~v bullt~~t~ ~~)t t le

but is absent or rare in others In hand specimen te sJihalshy

arife ia moderately dark

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 12: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

f3S

Spray Mine

The rnaln worlring0 of the Spray [)iine are located on the

nor1l~ern slopes of Spray Hill south of manganese Hill and

on the southern side of the Comstock trern formation

The host rocks of the ore-bodies are quartzi toe ond

slflOB of the Oonahllartzite and Slate (BliElBstt 1962)

A(cording to WaIler (19(4) the Main Lode cont1nued north

and entered rocks which Bllssett (1962) oonsiderfJ to be

prohably pori oftihG Cambri9n Crimson Creek Formation

~111er oboe ved thot the lode was produotive onl in the

Jreoombrlan quartzite and sl0te as the workings in the

Carnbrian rockswere shallow nnlllhe ore completely oxidized

Detailed descriptions of the workings were given by

WaIler (19(14) and fiwelvetrels and Ward (1910) A total of

four ore-bodies were repormiddotted all of which were parnllel

strik ng NNW and steeply tlipfing The rost important lodes

ore No 1 (Main) ftnd No 3 (Gurnj_Els) Nos 2 nnd 4 were of

11ttle economic importance Valler describ(~d VIC lodcs as

well doff ned fismre formmiddotti one

The ore was reported 10 comliot of g81enand a leodshy

antiJrony SUlp11ide (re erred to as jarnesoni te) with pfrie

in a gangne of ioerimiddotto md quortz AccoTf1inglo WaIler one

of the richest ore shoots discovHred in the Zeehatl ltliatrict

oocurrsc1 in the l1inin Lode in Page and [loDermottts Jorkings

The ore in thiltl shoot renched a maximum width of 16 feet ana

the leJlgl~h of ~he shoot was reported to be 400 feet WalleI

86

esttmated DppIoxirrltrt l )ly two-tl-drde of ~Ilc~ ore to be galena

Ri~ports in1icate thaL the silver content of th ore

vlrjed connider~tblyhr()llghout the mine but =Lt woulcl apreac

from th~~ avatlllble fi lturea that tho average aUvcr con L(mt

of the ore Nas of the order of 100 ozeper ton TwelvetrHGc

and WeIrd nocl a cnrreltion between high BDver ana imtimony

content8 in the ore and Twelvetrees (1901a) refcrted that

some rich untimonhtl-leail ore neayed ov(~r ~) ODe) ozs of

silver ler ton in-ITer (op ci t) staterl thattho ntimony

content of ho ore WGf-J higher in upfer levels rtnc1 that

psrtte increq~ec1 in abUDrlmce at lOer levels

ThepreS6flce of small Cluntt tje~1 of argentitc flsfjociaterl

ttl _ 1 l~rjteI

CO-~ ~ revmiddotr~middotJ1J brt1Pemiddott+e~gtJ (1910) t-lmiddotJ~eClmnI) ~ imiddotr lmiddoto1 lmiddotJtt ~1Jmiddot ~l ~~O

(X235P52) tnlhe T(sm9nian Museum colloction confirms this

recurt This ~-)pecimen which Hl originc1lly in the W 1

Pettord col1ection contnins patches of rlrgcntite up to 3cm

x 2cm occurring ~lS thin films on ~ddlrt Ca 111088 of galena

covell~lte and lwrttC dt1iin lihe arge1titc flere noted in

polished section

Pett~erll (op cit p9 ) Chl0 recoriled the presence of

mltive antimony nil thin rillfJ~tjng patches about 811 inch

ln (Hameter irnplantec1 on H si l1Coovs matr-Ix tt T~jf) ikntt shy

fic~~ljon mal be ttnrl-iable as a sicoimcn from PettorO to col-

lectiton (now eclmen no Xf17 in -thCl lHDInnian V)USCWfi Col1ecshy

h nqt l n(lI 1 0 U ~ -ion)J lltbi1 rlt) J __ ~ J ~ IPJ11 -l4V(J 41~14monyVL Unmiddotmiddotmiddotbmiddotnnw t~~~Jbn9

1dmtified flO EJtHmite In Ihe abtHmce of any reports of

n bullJ v Q timiddoton1 dgtro 711 () rgtlfj bullbullf _ in +lC~I 14O~~J ~han bull no rnV(J

i

~~lj I~l )~ -1 bull 10l1 L tle~Jc ibull it

e lik-]middot lllt 1111 Cl-ITIOYl i ~ro ~t ( r poi cy fJ 1 - J IJdJP ~y t) no

87

Ietterd (opeit) also liste( small amounts of the secondary

minerals ke1mesi te and atjblconite in the Spray workingth

The gOS3ftfi outcrop of Gurniemiddot s Lode at trw tcrp of the

Spray Hill wao reported h~ ~rw)lvetrees and Nard (1910) to

be rich in naltive silver and silver chlor14n

Sr9cimens of ore in thc) tt1rlSmtln1anMuseum collectt on

fnd rtt9tertal collected from the tmrfaee dumps near the

lJorkj ngs were found to contain boulangerite galcma pyri te

and 9phalerite atl the-major metallic corJst1tttents in a

gIFtUg119 of aideri teurol Imd (lUJ)rtz Minor cOflsti tuents irlentified

in l)olisrH~dsectjonB were arsenopyrite tetlahedrl ta bourshy

nordta ehale~pyrite rnd pyrrl1oti ie T1H pIoportions of

the v~ril)lJs cOlUrtituents nhow 0 cOrlsideehle vUriation

between flpec1mens

Stil1wel1 (1947) (lesoribedsome npecimens from the

S~ray Mtue andtlHSlre i~J good agreement between Stil1well 8

deeeri pt1ons and the Beeimens exrunined in this investigation

All of the rninera1a and feaures de~lcrfbed by Stil1wel1 hOva

been observed and s(ma~ ~~dditiol1alminen~la (bournonlte and

pyrrhotite) have been noted Sphalerimiddotte is considerably

more aburldant in some of tihase specimenathan 1n tllOse

described by SIil1wel1

Boulan~erita wlieh istho most abundarrt ore rrdneral in

the sulle of opecif)en8 examined replesena t~je Inineral reshy

farred to Q8 jilmcsonite in many eerljer nccountg of the

geology d~ thn Zeehnn area Theproperties and identifictltion

ObL ~l ho~lQn()Iri~ ~~ lttT 11ltigt~crlj(bull Lsewneret ( PlO1011) orne~t L ( I ~~ S

88

specimens of ore (etg 1202) consist essentlally of rrtaseive

boulallgi~rite with minor aliOunts of tetrnhedrito gmlema

bournonitat pyrite RllG arsenopri to ~prescnt as inclu8l ona

INittdn th~~ boulangegtrite fIetraheltiri te is fl comrlOfl assooshy

late of the llOulan eri te in these specimens and in ono

sarrlple (1 50) constitutes apIuoximately 10 of the ore The

size of the tmlivilu81 areas of ter-rahedrite within the

boulangenite rftLngf from very Ftne up to O 25mrn 2l1f1 the

tlLxturul rc~lBiionahip suggGSts thst ie1rahedrite hrupound undeI shy

ponepartial replacement by boulrmgertte frhe fremiddot~uenoy of

middotthe fU38ernblJge bOl)I~ngerite-tetrnlHedrito io in Iteeplng Iidth

the ohservtation of tltel vetrees and Ward (1910) that h1gh

silver valuog were often related to hilth antimollY content

in ore from the SPlI~y iine

ECHJI~~lnged ta alf3o occurs throughout much 01 the 813erite

gengue SJJmiddot fine rod-li ke (md nasdle-11ke crys tal~ (eg P 181)

lt ~Wimiddottlt the longthe of ihe individual crystals rarely exceeding

O05mm fhese fin(~ cryfdals ar~ common in sm~111 clusters

lEUld velnleta and ()cctudcmally merge to form areas consi~3ting

of mFUfH~S of thfHH3 ftne ftroa~Jf and nnEHtl1es u (Plate ~59No 1)

fli(J vdltlth of the individual mamdve HreaEl reoches a mflximum

OT evE~ral centimetres (Si P 00)

GHlena is leSfl atl11ndantmiddot than boult3ngerite in tlH~se

spocimens and 2H rsrely observed lfUihout some aHwciated

k 1 J f 1 ( on 1(~)t )Ut)Vd angen e E~ argor CUeuroUJS 0 ga~3Fl e J J) ~re

up to sEnreral ce1ttmetres in overill l11i dth I~nd are surrounded

by gangnet nnd cont]in 1~j_ne inclusions of boulHngeri ta

- -------------------------------- ------

89shy

tetr51hedri te sphalerita pyrl te and arsenopyri te Grdena

~lao oonurs ~l8 freqlltmt fine (O01-007mm) 1ncluslons

of irregular outline within 1he maas1ve houlangeri tee

130urnoni te focrns sm11 irrerularly-shaped pt~tehm

within the massive boulangarite the overall width ()f these

inclnsions ranging from O025mrn ul) to O )rnm A small

amount of hournonite W~JS also observed as nstrrow veinlete

(oOOmm to O015mm jn v1dth) in Sl)hsJeri te and pyr1 te

(P 196) bull Cbaleopyri t( t tertrahe(1rite tmd galena are Jgtresent

pound$ inelusiona within the bournonite in these veinlemiddotts

Pllite and arsenopyri te are Invjuiahly associated hut

in VtiriOttS prop()rtions and occur as idiomorrhie and 6ubidshy

iomorphic crYHtala di flseminated through the other sLlphides

and tllr~ gnngtte Masavs areas up 10 several centimetres in

i1idth 8re alao resent (eg middotP H39 192) in ~ome speclmens

In tle[H~ l3reas pyri to is generally the lJl()re alnlndarrt of the

two rninerals but occasionally arEHt101)yrito ia the matn conshy

sti tuantThe in(1jviduol erystnlG of each mineral range from

O01rmn up to O 5r1l Both minereh1 have apparerltly undershy

one ext~cnsive replacement by boulatlgerite gaJsna tetrashy

hedrite nrdl bournQnite and partinl replacernent by sphaJerif(2)o

J3cmlarlgeri te temiddottrahettrimiddotte and gal~~na occupy trrtorsti tial

areas in the m~lSt3ive pyr1te and arsenopyrite liltla also occur

as fine inclusionn and veLnle~s withinthese minerals

middot~hltlari+ll Cl nblimiddotd middot in ~Omiddot1middotp -)ir1lt~nr1 (Q 1) 18middot 191)- i~L~gt ~ bull ~ v JJ c1 JL) c~tj J 71 (1 l-~~ ~v bullt~~t~ ~~)t t le

but is absent or rare in others In hand specimen te sJihalshy

arife ia moderately dark

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 13: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

86

esttmated DppIoxirrltrt l )ly two-tl-drde of ~Ilc~ ore to be galena

Ri~ports in1icate thaL the silver content of th ore

vlrjed connider~tblyhr()llghout the mine but =Lt woulcl apreac

from th~~ avatlllble fi lturea that tho average aUvcr con L(mt

of the ore Nas of the order of 100 ozeper ton TwelvetrHGc

and WeIrd nocl a cnrreltion between high BDver ana imtimony

content8 in the ore and Twelvetrees (1901a) refcrted that

some rich untimonhtl-leail ore neayed ov(~r ~) ODe) ozs of

silver ler ton in-ITer (op ci t) staterl thattho ntimony

content of ho ore WGf-J higher in upfer levels rtnc1 that

psrtte increq~ec1 in abUDrlmce at lOer levels

ThepreS6flce of small Cluntt tje~1 of argentitc flsfjociaterl

ttl _ 1 l~rjteI

CO-~ ~ revmiddotr~middotJ1J brt1Pemiddott+e~gtJ (1910) t-lmiddotJ~eClmnI) ~ imiddotr lmiddoto1 lmiddotJtt ~1Jmiddot ~l ~~O

(X235P52) tnlhe T(sm9nian Museum colloction confirms this

recurt This ~-)pecimen which Hl originc1lly in the W 1

Pettord col1ection contnins patches of rlrgcntite up to 3cm

x 2cm occurring ~lS thin films on ~ddlrt Ca 111088 of galena

covell~lte and lwrttC dt1iin lihe arge1titc flere noted in

polished section

Pett~erll (op cit p9 ) Chl0 recoriled the presence of

mltive antimony nil thin rillfJ~tjng patches about 811 inch

ln (Hameter irnplantec1 on H si l1Coovs matr-Ix tt T~jf) ikntt shy

fic~~ljon mal be ttnrl-iable as a sicoimcn from PettorO to col-

lectiton (now eclmen no Xf17 in -thCl lHDInnian V)USCWfi Col1ecshy

h nqt l n(lI 1 0 U ~ -ion)J lltbi1 rlt) J __ ~ J ~ IPJ11 -l4V(J 41~14monyVL Unmiddotmiddotmiddotbmiddotnnw t~~~Jbn9

1dmtified flO EJtHmite In Ihe abtHmce of any reports of

n bullJ v Q timiddoton1 dgtro 711 () rgtlfj bullbullf _ in +lC~I 14O~~J ~han bull no rnV(J

i

~~lj I~l )~ -1 bull 10l1 L tle~Jc ibull it

e lik-]middot lllt 1111 Cl-ITIOYl i ~ro ~t ( r poi cy fJ 1 - J IJdJP ~y t) no

87

Ietterd (opeit) also liste( small amounts of the secondary

minerals ke1mesi te and atjblconite in the Spray workingth

The gOS3ftfi outcrop of Gurniemiddot s Lode at trw tcrp of the

Spray Hill wao reported h~ ~rw)lvetrees and Nard (1910) to

be rich in naltive silver and silver chlor14n

Sr9cimens of ore in thc) tt1rlSmtln1anMuseum collectt on

fnd rtt9tertal collected from the tmrfaee dumps near the

lJorkj ngs were found to contain boulangerite galcma pyri te

and 9phalerite atl the-major metallic corJst1tttents in a

gIFtUg119 of aideri teurol Imd (lUJ)rtz Minor cOflsti tuents irlentified

in l)olisrH~dsectjonB were arsenopyrite tetlahedrl ta bourshy

nordta ehale~pyrite rnd pyrrl1oti ie T1H pIoportions of

the v~ril)lJs cOlUrtituents nhow 0 cOrlsideehle vUriation

between flpec1mens

Stil1wel1 (1947) (lesoribedsome npecimens from the

S~ray Mtue andtlHSlre i~J good agreement between Stil1well 8

deeeri pt1ons and the Beeimens exrunined in this investigation

All of the rninera1a and feaures de~lcrfbed by Stil1wel1 hOva

been observed and s(ma~ ~~dditiol1alminen~la (bournonlte and

pyrrhotite) have been noted Sphalerimiddotte is considerably

more aburldant in some of tihase specimenathan 1n tllOse

described by SIil1wel1

Boulan~erita wlieh istho most abundarrt ore rrdneral in

the sulle of opecif)en8 examined replesena t~je Inineral reshy

farred to Q8 jilmcsonite in many eerljer nccountg of the

geology d~ thn Zeehnn area Theproperties and identifictltion

ObL ~l ho~lQn()Iri~ ~~ lttT 11ltigt~crlj(bull Lsewneret ( PlO1011) orne~t L ( I ~~ S

88

specimens of ore (etg 1202) consist essentlally of rrtaseive

boulallgi~rite with minor aliOunts of tetrnhedrito gmlema

bournonitat pyrite RllG arsenopri to ~prescnt as inclu8l ona

INittdn th~~ boulangegtrite fIetraheltiri te is fl comrlOfl assooshy

late of the llOulan eri te in these specimens and in ono

sarrlple (1 50) constitutes apIuoximately 10 of the ore The

size of the tmlivilu81 areas of ter-rahedrite within the

boulangenite rftLngf from very Ftne up to O 25mrn 2l1f1 the

tlLxturul rc~lBiionahip suggGSts thst ie1rahedrite hrupound undeI shy

ponepartial replacement by boulrmgertte frhe fremiddot~uenoy of

middotthe fU38ernblJge bOl)I~ngerite-tetrnlHedrito io in Iteeplng Iidth

the ohservtation of tltel vetrees and Ward (1910) that h1gh

silver valuog were often related to hilth antimollY content

in ore from the SPlI~y iine

ECHJI~~lnged ta alf3o occurs throughout much 01 the 813erite

gengue SJJmiddot fine rod-li ke (md nasdle-11ke crys tal~ (eg P 181)

lt ~Wimiddottlt the longthe of ihe individual crystals rarely exceeding

O05mm fhese fin(~ cryfdals ar~ common in sm~111 clusters

lEUld velnleta and ()cctudcmally merge to form areas consi~3ting

of mFUfH~S of thfHH3 ftne ftroa~Jf and nnEHtl1es u (Plate ~59No 1)

fli(J vdltlth of the individual mamdve HreaEl reoches a mflximum

OT evE~ral centimetres (Si P 00)

GHlena is leSfl atl11ndantmiddot than boult3ngerite in tlH~se

spocimens and 2H rsrely observed lfUihout some aHwciated

k 1 J f 1 ( on 1(~)t )Ut)Vd angen e E~ argor CUeuroUJS 0 ga~3Fl e J J) ~re

up to sEnreral ce1ttmetres in overill l11i dth I~nd are surrounded

by gangnet nnd cont]in 1~j_ne inclusions of boulHngeri ta

- -------------------------------- ------

89shy

tetr51hedri te sphalerita pyrl te and arsenopyri te Grdena

~lao oonurs ~l8 freqlltmt fine (O01-007mm) 1ncluslons

of irregular outline within 1he maas1ve houlangeri tee

130urnoni te focrns sm11 irrerularly-shaped pt~tehm

within the massive boulangarite the overall width ()f these

inclnsions ranging from O025mrn ul) to O )rnm A small

amount of hournonite W~JS also observed as nstrrow veinlete

(oOOmm to O015mm jn v1dth) in Sl)hsJeri te and pyr1 te

(P 196) bull Cbaleopyri t( t tertrahe(1rite tmd galena are Jgtresent

pound$ inelusiona within the bournonite in these veinlemiddotts

Pllite and arsenopyri te are Invjuiahly associated hut

in VtiriOttS prop()rtions and occur as idiomorrhie and 6ubidshy

iomorphic crYHtala di flseminated through the other sLlphides

and tllr~ gnngtte Masavs areas up 10 several centimetres in

i1idth 8re alao resent (eg middotP H39 192) in ~ome speclmens

In tle[H~ l3reas pyri to is generally the lJl()re alnlndarrt of the

two rninerals but occasionally arEHt101)yrito ia the matn conshy

sti tuantThe in(1jviduol erystnlG of each mineral range from

O01rmn up to O 5r1l Both minereh1 have apparerltly undershy

one ext~cnsive replacement by boulatlgerite gaJsna tetrashy

hedrite nrdl bournQnite and partinl replacernent by sphaJerif(2)o

J3cmlarlgeri te temiddottrahettrimiddotte and gal~~na occupy trrtorsti tial

areas in the m~lSt3ive pyr1te and arsenopyrite liltla also occur

as fine inclusionn and veLnle~s withinthese minerals

middot~hltlari+ll Cl nblimiddotd middot in ~Omiddot1middotp -)ir1lt~nr1 (Q 1) 18middot 191)- i~L~gt ~ bull ~ v JJ c1 JL) c~tj J 71 (1 l-~~ ~v bullt~~t~ ~~)t t le

but is absent or rare in others In hand specimen te sJihalshy

arife ia moderately dark

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 14: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

87

Ietterd (opeit) also liste( small amounts of the secondary

minerals ke1mesi te and atjblconite in the Spray workingth

The gOS3ftfi outcrop of Gurniemiddot s Lode at trw tcrp of the

Spray Hill wao reported h~ ~rw)lvetrees and Nard (1910) to

be rich in naltive silver and silver chlor14n

Sr9cimens of ore in thc) tt1rlSmtln1anMuseum collectt on

fnd rtt9tertal collected from the tmrfaee dumps near the

lJorkj ngs were found to contain boulangerite galcma pyri te

and 9phalerite atl the-major metallic corJst1tttents in a

gIFtUg119 of aideri teurol Imd (lUJ)rtz Minor cOflsti tuents irlentified

in l)olisrH~dsectjonB were arsenopyrite tetlahedrl ta bourshy

nordta ehale~pyrite rnd pyrrl1oti ie T1H pIoportions of

the v~ril)lJs cOlUrtituents nhow 0 cOrlsideehle vUriation

between flpec1mens

Stil1wel1 (1947) (lesoribedsome npecimens from the

S~ray Mtue andtlHSlre i~J good agreement between Stil1well 8

deeeri pt1ons and the Beeimens exrunined in this investigation

All of the rninera1a and feaures de~lcrfbed by Stil1wel1 hOva

been observed and s(ma~ ~~dditiol1alminen~la (bournonlte and

pyrrhotite) have been noted Sphalerimiddotte is considerably

more aburldant in some of tihase specimenathan 1n tllOse

described by SIil1wel1

Boulan~erita wlieh istho most abundarrt ore rrdneral in

the sulle of opecif)en8 examined replesena t~je Inineral reshy

farred to Q8 jilmcsonite in many eerljer nccountg of the

geology d~ thn Zeehnn area Theproperties and identifictltion

ObL ~l ho~lQn()Iri~ ~~ lttT 11ltigt~crlj(bull Lsewneret ( PlO1011) orne~t L ( I ~~ S

88

specimens of ore (etg 1202) consist essentlally of rrtaseive

boulallgi~rite with minor aliOunts of tetrnhedrito gmlema

bournonitat pyrite RllG arsenopri to ~prescnt as inclu8l ona

INittdn th~~ boulangegtrite fIetraheltiri te is fl comrlOfl assooshy

late of the llOulan eri te in these specimens and in ono

sarrlple (1 50) constitutes apIuoximately 10 of the ore The

size of the tmlivilu81 areas of ter-rahedrite within the

boulangenite rftLngf from very Ftne up to O 25mrn 2l1f1 the

tlLxturul rc~lBiionahip suggGSts thst ie1rahedrite hrupound undeI shy

ponepartial replacement by boulrmgertte frhe fremiddot~uenoy of

middotthe fU38ernblJge bOl)I~ngerite-tetrnlHedrito io in Iteeplng Iidth

the ohservtation of tltel vetrees and Ward (1910) that h1gh

silver valuog were often related to hilth antimollY content

in ore from the SPlI~y iine

ECHJI~~lnged ta alf3o occurs throughout much 01 the 813erite

gengue SJJmiddot fine rod-li ke (md nasdle-11ke crys tal~ (eg P 181)

lt ~Wimiddottlt the longthe of ihe individual crystals rarely exceeding

O05mm fhese fin(~ cryfdals ar~ common in sm~111 clusters

lEUld velnleta and ()cctudcmally merge to form areas consi~3ting

of mFUfH~S of thfHH3 ftne ftroa~Jf and nnEHtl1es u (Plate ~59No 1)

fli(J vdltlth of the individual mamdve HreaEl reoches a mflximum

OT evE~ral centimetres (Si P 00)

GHlena is leSfl atl11ndantmiddot than boult3ngerite in tlH~se

spocimens and 2H rsrely observed lfUihout some aHwciated

k 1 J f 1 ( on 1(~)t )Ut)Vd angen e E~ argor CUeuroUJS 0 ga~3Fl e J J) ~re

up to sEnreral ce1ttmetres in overill l11i dth I~nd are surrounded

by gangnet nnd cont]in 1~j_ne inclusions of boulHngeri ta

- -------------------------------- ------

89shy

tetr51hedri te sphalerita pyrl te and arsenopyri te Grdena

~lao oonurs ~l8 freqlltmt fine (O01-007mm) 1ncluslons

of irregular outline within 1he maas1ve houlangeri tee

130urnoni te focrns sm11 irrerularly-shaped pt~tehm

within the massive boulangarite the overall width ()f these

inclnsions ranging from O025mrn ul) to O )rnm A small

amount of hournonite W~JS also observed as nstrrow veinlete

(oOOmm to O015mm jn v1dth) in Sl)hsJeri te and pyr1 te

(P 196) bull Cbaleopyri t( t tertrahe(1rite tmd galena are Jgtresent

pound$ inelusiona within the bournonite in these veinlemiddotts

Pllite and arsenopyri te are Invjuiahly associated hut

in VtiriOttS prop()rtions and occur as idiomorrhie and 6ubidshy

iomorphic crYHtala di flseminated through the other sLlphides

and tllr~ gnngtte Masavs areas up 10 several centimetres in

i1idth 8re alao resent (eg middotP H39 192) in ~ome speclmens

In tle[H~ l3reas pyri to is generally the lJl()re alnlndarrt of the

two rninerals but occasionally arEHt101)yrito ia the matn conshy

sti tuantThe in(1jviduol erystnlG of each mineral range from

O01rmn up to O 5r1l Both minereh1 have apparerltly undershy

one ext~cnsive replacement by boulatlgerite gaJsna tetrashy

hedrite nrdl bournQnite and partinl replacernent by sphaJerif(2)o

J3cmlarlgeri te temiddottrahettrimiddotte and gal~~na occupy trrtorsti tial

areas in the m~lSt3ive pyr1te and arsenopyrite liltla also occur

as fine inclusionn and veLnle~s withinthese minerals

middot~hltlari+ll Cl nblimiddotd middot in ~Omiddot1middotp -)ir1lt~nr1 (Q 1) 18middot 191)- i~L~gt ~ bull ~ v JJ c1 JL) c~tj J 71 (1 l-~~ ~v bullt~~t~ ~~)t t le

but is absent or rare in others In hand specimen te sJihalshy

arife ia moderately dark

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 15: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

88

specimens of ore (etg 1202) consist essentlally of rrtaseive

boulallgi~rite with minor aliOunts of tetrnhedrito gmlema

bournonitat pyrite RllG arsenopri to ~prescnt as inclu8l ona

INittdn th~~ boulangegtrite fIetraheltiri te is fl comrlOfl assooshy

late of the llOulan eri te in these specimens and in ono

sarrlple (1 50) constitutes apIuoximately 10 of the ore The

size of the tmlivilu81 areas of ter-rahedrite within the

boulangenite rftLngf from very Ftne up to O 25mrn 2l1f1 the

tlLxturul rc~lBiionahip suggGSts thst ie1rahedrite hrupound undeI shy

ponepartial replacement by boulrmgertte frhe fremiddot~uenoy of

middotthe fU38ernblJge bOl)I~ngerite-tetrnlHedrito io in Iteeplng Iidth

the ohservtation of tltel vetrees and Ward (1910) that h1gh

silver valuog were often related to hilth antimollY content

in ore from the SPlI~y iine

ECHJI~~lnged ta alf3o occurs throughout much 01 the 813erite

gengue SJJmiddot fine rod-li ke (md nasdle-11ke crys tal~ (eg P 181)

lt ~Wimiddottlt the longthe of ihe individual crystals rarely exceeding

O05mm fhese fin(~ cryfdals ar~ common in sm~111 clusters

lEUld velnleta and ()cctudcmally merge to form areas consi~3ting

of mFUfH~S of thfHH3 ftne ftroa~Jf and nnEHtl1es u (Plate ~59No 1)

fli(J vdltlth of the individual mamdve HreaEl reoches a mflximum

OT evE~ral centimetres (Si P 00)

GHlena is leSfl atl11ndantmiddot than boult3ngerite in tlH~se

spocimens and 2H rsrely observed lfUihout some aHwciated

k 1 J f 1 ( on 1(~)t )Ut)Vd angen e E~ argor CUeuroUJS 0 ga~3Fl e J J) ~re

up to sEnreral ce1ttmetres in overill l11i dth I~nd are surrounded

by gangnet nnd cont]in 1~j_ne inclusions of boulHngeri ta

- -------------------------------- ------

89shy

tetr51hedri te sphalerita pyrl te and arsenopyri te Grdena

~lao oonurs ~l8 freqlltmt fine (O01-007mm) 1ncluslons

of irregular outline within 1he maas1ve houlangeri tee

130urnoni te focrns sm11 irrerularly-shaped pt~tehm

within the massive boulangarite the overall width ()f these

inclnsions ranging from O025mrn ul) to O )rnm A small

amount of hournonite W~JS also observed as nstrrow veinlete

(oOOmm to O015mm jn v1dth) in Sl)hsJeri te and pyr1 te

(P 196) bull Cbaleopyri t( t tertrahe(1rite tmd galena are Jgtresent

pound$ inelusiona within the bournonite in these veinlemiddotts

Pllite and arsenopyri te are Invjuiahly associated hut

in VtiriOttS prop()rtions and occur as idiomorrhie and 6ubidshy

iomorphic crYHtala di flseminated through the other sLlphides

and tllr~ gnngtte Masavs areas up 10 several centimetres in

i1idth 8re alao resent (eg middotP H39 192) in ~ome speclmens

In tle[H~ l3reas pyri to is generally the lJl()re alnlndarrt of the

two rninerals but occasionally arEHt101)yrito ia the matn conshy

sti tuantThe in(1jviduol erystnlG of each mineral range from

O01rmn up to O 5r1l Both minereh1 have apparerltly undershy

one ext~cnsive replacement by boulatlgerite gaJsna tetrashy

hedrite nrdl bournQnite and partinl replacernent by sphaJerif(2)o

J3cmlarlgeri te temiddottrahettrimiddotte and gal~~na occupy trrtorsti tial

areas in the m~lSt3ive pyr1te and arsenopyrite liltla also occur

as fine inclusionn and veLnle~s withinthese minerals

middot~hltlari+ll Cl nblimiddotd middot in ~Omiddot1middotp -)ir1lt~nr1 (Q 1) 18middot 191)- i~L~gt ~ bull ~ v JJ c1 JL) c~tj J 71 (1 l-~~ ~v bullt~~t~ ~~)t t le

but is absent or rare in others In hand specimen te sJihalshy

arife ia moderately dark

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 16: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

- -------------------------------- ------

89shy

tetr51hedri te sphalerita pyrl te and arsenopyri te Grdena

~lao oonurs ~l8 freqlltmt fine (O01-007mm) 1ncluslons

of irregular outline within 1he maas1ve houlangeri tee

130urnoni te focrns sm11 irrerularly-shaped pt~tehm

within the massive boulangarite the overall width ()f these

inclnsions ranging from O025mrn ul) to O )rnm A small

amount of hournonite W~JS also observed as nstrrow veinlete

(oOOmm to O015mm jn v1dth) in Sl)hsJeri te and pyr1 te

(P 196) bull Cbaleopyri t( t tertrahe(1rite tmd galena are Jgtresent

pound$ inelusiona within the bournonite in these veinlemiddotts

Pllite and arsenopyri te are Invjuiahly associated hut

in VtiriOttS prop()rtions and occur as idiomorrhie and 6ubidshy

iomorphic crYHtala di flseminated through the other sLlphides

and tllr~ gnngtte Masavs areas up 10 several centimetres in

i1idth 8re alao resent (eg middotP H39 192) in ~ome speclmens

In tle[H~ l3reas pyri to is generally the lJl()re alnlndarrt of the

two rninerals but occasionally arEHt101)yrito ia the matn conshy

sti tuantThe in(1jviduol erystnlG of each mineral range from

O01rmn up to O 5r1l Both minereh1 have apparerltly undershy

one ext~cnsive replacement by boulatlgerite gaJsna tetrashy

hedrite nrdl bournQnite and partinl replacernent by sphaJerif(2)o

J3cmlarlgeri te temiddottrahettrimiddotte and gal~~na occupy trrtorsti tial

areas in the m~lSt3ive pyr1te and arsenopyrite liltla also occur

as fine inclusionn and veLnle~s withinthese minerals

middot~hltlari+ll Cl nblimiddotd middot in ~Omiddot1middotp -)ir1lt~nr1 (Q 1) 18middot 191)- i~L~gt ~ bull ~ v JJ c1 JL) c~tj J 71 (1 l-~~ ~v bullt~~t~ ~~)t t le

but is absent or rare in others In hand specimen te sJihalshy

arife ia moderately dark

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 17: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

90

Galenn nn( bCI1Jlttngerite occur an common lnclusioml

(O01mm to O1mrr) witmiddotl1n th8 sphalGritc nnd fl~ear to

hove part1all rOI)lnced the DJihleri 19 Ch)lcopyri to is

ccmoll ln 1-1)1gt nll]etmiddotI~emiddot middot lmiddotn ltJolmiddotmiddotmiddotioI1 1)1-1lt Nmiddoto middotllydLiL 1L( S1 i yen bull I Lt ~i~lI [ t~ ~ IL b~_ Ju~) ~t 0 to

Xod-ltke in 3110 vd(~ 0 maximum length of O01mm Iyrrhotite

is present as occasional eXBolvtion bo~ies of sisilar ohape

FH1i Dizc but in le~] common jhan clllcopyrJ IC l~he inshy

rC111or 01 (h co-vri p n-~ nrrrhomiddotj--t I bull ofl1 110 OIl pnshy I~bull J abull1 -~lJ I~_ lJ c JJ ~ ~L h vx-middot~) ~1 ~~ (1

merrt along cryotnl1ograp1ic Jlaoeo in lhe spJJ 11eri Le

A 1) ttlo chnlcopyrite 1N~1 also note rlS finEI tnclrwions

nnd vwinlots vdt1rlnlc 1rancdrite and JS rrO fini~ jn(~lusions

wi tdn bournol1j to

91

AscemblanD0 o~ OMO ~lin~rnlo ~ u~ ~~lmiddotd~) _~J ~ bull - ~

COTlmOn Boulal1r~erLmiddotte - C11ena Galena - aphalerie 1)Y1ia ~3])halerito D(1)_langcri to - tetr)hD~lrj to Galoll11 - pyrite Gfl1ena - prrtte - splv1J orjtc ArtHmopr1i-tie - pyrtte C~middotmiddotmiddot~-lcopyr~imiddotte DPh~lelllito

n)1J- n~1--t Trt J~ ~ tll )~1 1 J

rEHnopyrl te - boulnnlt(JcQ [1nl ana - tetmiddot1e1rite

Infrequellt

Hare

j~rJ()nO~~ltrrite boulw1er1 ~) galonn AraerloPYllte - boulangerl to galena

pyri to XmiddotHF101)yr~i tEl - b()1)J~nger1 to shy pyriJlie rHenopyrite - hournoni te rsenopyrite - gelcna lrsenopyri te - galena - tctrn1le(lrite froenopyri te - 8)1Ol erito ArDenopyri to - tctrr1rcc1riLc Boulangcri te - bournonJto Boulnngerite - bournonite - tetrBho~rlte Boulrmgerlte - galena - pyrite Doulangerite - galena - ophaleritc Boulangeri te - galena - tetrahedri tie fJolll~lner1toE) - pyri to to trhclrj8 Doulangerie - sphalori te Bournonite - grlena Bournonito - galena - sphnlerite Bournonite - pyr1e Dourr1oni~e - pyrite -tetrhedri to Bournoni tie - o)hnJori l~e

13ournon1 tie - sJJhalerite - IjeLIHbfn ri1e Bournonite - tetrahedrite Gnlene - sph81erite - to rr1ef1r~middot

Pyrite - tetra~e~rite

2yrrhoitle - sphaJ eri te

Argenttte - covell1te Prr~entito - grl1ena ~ rgentiie - pyrtlo Bournon1 6 - chalcopyri Le Bournontte - pyrite - sphalerite Ch~tlco]Jsrtto - tctrl1~1edri be

92

B~ 1 rttn bull 6 iino nmiddott if1 f~ 1 bull

flhe workinOJ of J3c~latrll[t sMinc also knoh iD the

11 n c ri Jmiddot1 1~ anOs ltJ U bull bull 1lt( ne are lClc ted on the 10])c8 or rlntineoe

1)11 lemiddott I bull L Q ~ kJ middott U 11~-t+rl V _ 0iJ 1middothA_ ~(middottht- shy bull fit 1_t~ -crc ~~ 11- ~L n bull middot1 of10S0 (ect lJ -)f t ~

orn side of Ar~8nt Flat

Blmiddot~tt~tOOV (106)2) (bull I lmiddotrrib~l 11- CO11n+r1r J~u lgtJ (~1~J11 11 1 bull cl Ior o UL

I1fjf3t3Ured ~~m) Slruo) pirpIe red [middotmrl IeCH grc~wwke ~)il t-

D tone pnrJ mllcl8middot~onE) or Jhale rU3Bigncl1 to the Cmbrifln Crimshy

son Creek Forme jOl1 rc large gossnnous fornKl iiOl1 capin

i~m[U18i3e Hill atmiddot~rcle t3d conaiflerabl(~ injicrcst j n Imiddote early

(Jmiddotlmiddotmiddotmiddotl~ _gt~lo~l f)tmiddotmiddotbull (lpnvllr 10middotmiddotmiddotnenomiddot_ t or ~t01tJl11tlmiddotn oLlt - (~n(1 Plmiddotlt1rmiddotu (188middot(8)J C -rcmiddotmiddot(lttJ r __ ~ tn emiddot _~~ J -C~~

(1 o~ 3)1 1(~ I) n1 rlom~)Ir (r~l wore amongmiddot ihose who prcd~lcted the J_~ U ~ tJ

pros nee of good ore helow t1n gODfl[Ul

rhe ~osnnn cmjmiddotto mainls of limoni e Nir~h 30mo Irolshy

llmiddot-t~ ~nd~- JC A lr (1q6~3) -ilmiddot1~ u e1omiddotllesmiddott-(1u hfltbullJt j)oq~l- ~ bre b 1bull 11) l NlI O~f) t) 118 _lt JJ- (2rgt_

rived from th ox1(1~ lon of IWrj 10 and ~nganjferous 6100rlte

In a highlJ sheoro(l zone in ~ho 8(3dim(nts Accordine to

Rlj ssett (1962) the gOSfJanOUS mater1tl eontnil1s up to 1Cozs

of silver er ton

FoJlow~middotn[~J n recomiddotmiddotmmiddotldt~onj middot1L by Tll~cllte1~ middotmiddotl-L1 (9(0)~~ U~ ~ Jlllshy~ ( ~ J ~ ~1 D 11 imiddot flth1middot_~ tlampJ~

ing be oDrried ouL to t0mt Dalstr~ps Lode bnloVl ~ho zone of

ox1d~t1on two hole6 were drilled by t~o Dn~art~cnt of shyjr-cc of (T nj po V~middot]middot te lt1lt1(000 amiddot+~ middotmiddotilmiddotmiddotJmiddot ltltgti (middotmiddotrmiddotireM nes r tAo 00 ~~L ~ d i(_ clt_ -1 J ~ 1 ~ ~I ~~ u ~ - tl J bull v 1 -4- _J oJ

were noto(l jn tho ClrJll core (Jack 0rgt- ctt) but no

minernlJzatJol1 o 8conon~ic interest WtH iHscovcJred The

workings of Dalstrup 811ne flore nlBo C1E)1nlt~ltJ oul rmd hove

93 been descrihed by Jack

1ho worktnga lilt1 not exteocl belo1J tlw zone of oxidshy

ation and the only rioh ore extracted from the mine (tgtlme

from No 4 winze according to Tilley (1891) and Jaelt( op

01 t) No production figures are avldlable for Bsletrup f a iI~1ne

~ril1ey r~~portei the following assays of ore from the

v~inze

Pb ) Ag(OZS per ~on)

Canary ore tl 59 888

Gosean with native silver 27 830

Galcma 76 178 to 198

CeZlJssi te 70 15

Soft sulphiden 737 343

In addition Tilley reportu t at a hulk sample of

gOSSlUl and galena from tlm same wlnze tassayed 1190~s silver

ler ton

The carmrr ore tJ int1w aJJove ltmalrBis is probstbly

largely bindlletmtte atnee Petterd (1910p26) states that

btndheirni1e was known under tIlts nSUfle in the mininr nelds

of western Tasl1inla It ie however posatble tha tthe

canary ore ft in thin analyslfJ also incl11tlrd at lea$~ some

massicot

Sfldl amomlta of cerusste in the fault zone tn the

w01kina were noteuro)11by Jack (op nit) Aoeordinrc to Tilley

to 0 t t) l1~ -romiddot tttV +1el_ 0_y1Imiddotmiddot- 1 ltgt amiddot ~13~Ibo] te bv )1 na1g9 poundl(1Lh dmiddot x

(P bullfit ]3elstrup) in a trench near the wes tern boundary of the

qt J

r r deg0 jft FJ t ~J ~s-x- Tbullbull~I~

~he workinGs of r3evE~rnl mine] are locat)tl 01 the )Drshy

t~ on of Argent Ji10t v~rio lie~3 hcdiWeen ((nnr~r10ne Htll iJleen

Hill and the Testern boundary of thetorlfhip of Zeehsn

The Ar~ent Fili11etl vere 85 tVatec1 on thlo rt oSt middot4Jamp-A lt1e Ylt PltJ J [ J1

bull 1 +h~middot if ~ (middot1 0middot 1 111 middottY ~Jl e h)El 1J_0 ltbullbull_cgt 1 1i_ d~ middote ilver (UCtm gxtendshymiddotmiddotd1

(1 l) gtlIl( Smiddot~ tLn~ H1 0 +ht If)l+1r ~1 ~ of tfl11~~J J~~ Yro w ~_Jt J - 7 t~~ f~~ 1i ~t~j ~gt ~ middotmiddot~t~~Z~J 1 __

DescriptloYEjof tlw Norlrj niO of~heso mimHJ 11re j 11shy

0middot p 1~J] i n r middotimiddot middot O~i-middotL_~] 1 t (1 Qf (1 ) V ~Umiddotlbulln ljcJ lt1 I v ~ DJ) lo bull f - (1 Jltt rt

V 1 1 1middotmiddot1middot~~middotmiddot (19)4) rmiddoti~ (1 qA j) fnlgt3(1921)~ t UU81) dlL JJmiddothS lt t el -Ll lycvY ClnU

1gt bull~ ( 1t r 1 ) I ~ nJ Jt-l- (1 0 lt 2)1) ) L L Cr J I nmiddott dlln _ 1 b t v 7 ) bull A lerge murfl)(r of l()des

VI ~ r v middotmiddot middothmiddotmiddot -- Omiddot(j t l ~ q ~1(omiddotpmiddotmiddot b middot~o~CLe CtJih l on Jh 1 middot bullbull Clt Vbullr lJ L lt OIns lJ

] 1 of ()( 4) b I M bulla er j t U llt iuy NB1~E~ too Elmnll to be of eeonoT1c

infiortance ft11e 110B ~~J it~t-()rt~Jgtnt VJlorl~111fmiddot~G vreJ~e 1OSIO known

i1 ~l l poundl~ it tmiddot ~ middott ~ 1middotmiddot 1 6 1 bull middotnmiddot Hq Kt0 J)tl middotH l~-O c J6IJ poundgt6 8 1 lle- I) flb diJ ltne lti Co

Argcnt lS loeRt~~d in tconthcrn portion of the crea while

rlmiddottmiddotlmiddot I ~ rHmiddot- ~ 2middotfNo t~~ I f~nol+t~AJt 10 t j 4 J(t~middot Q ) u L ~ nomiddotmiddotmiddottmiddot v of tfo~ 11~r~I~J J~

I~(~ middotp~rotmiddoti fite I w bullbull~ I Ot w~middott O~middotqmiddotl r l middotmiddothnrmiddot1- of(Ai~jbull o c imiddot - ~ _~~j middoti~tl lti bull tii ~ __~ _1-pound 1 J Vt t~ ~ ~~ itt ) bull u

tho Plorence Mjne

TlL1middot t (1 002) ~ H f) ~bull -fll r~ 11 middotmiddotbull ~gt-Ip+1 ru ~8se jl lt1 bull gt3 bullven il~ o ovtJn )C i_ lJJon ---shy

t)10 general gEwlorfY jt the vicini middotty of lhe irrent MlrH)s

moat ofthe workinpl Dre withjn faulted anI f3haarshy

ad CUJfLh1lofl grownole mudstorln Dnd uh le The C8mhrian

rooks are frulted agnlnst IJevonian Florence lJIfzite OtHJt

f ~J c ~ ft -I middotgtmiddot1 10 l I~ f - ~ 1 t t bull Ilt 11 t1 f] 1gt0 lO Q ~(H1_ J2 middotbl nnv V(ro tCuJZ_vc a~J -_

formjnr u een Hil1north of the No 2]51 ft en) NeuroH3 oftjlG

No 4 sbflft 11

----- _-------__-----__shy

I

96

TtHD worktn o the NikeNttno ltewithil1~he PreofulJbrirln

Gomh Cl~irtzit(~ nn(~ Slale

From tIle varlO1u f)acounts of the YWlldtl0 of thE1SC mjl20S

it ir Jinx-ant that the ore boc1i1~t~ were fif31inrJi( vfins conshy

sJ n ~il nc 01 gglcnn wi th v~Jrj[lb 1e ElnrountGof f1phrtleri t~f (~nd

vrj -I- l ~ f ~rl pld lmiddotmiddot ~middottl f 1100 i 1C)Oti) gtgt(jJmiddotCmiddottnI1Jt~ _ t~tmiddot Atl r1 1-bullbull ~ Sl_ jJ bull y~t 4t tCL L _~ t oL gtrmiddott ~raquoC

a~8DVi ~n(ilJe~1 ftlr]~ en~1 1~_ ~ 1)OW~ la~ r~fiJret it lt-Vj I hic~ h 1 bull - fyop 6 f

_ to fh7

1 n~ 1 ft 06middot -t~ 1deg0 17 V lvmiddotmiddoto el Y (middotr)dh rh d middot middotitt~~et dl 1]7~ J 0bull middotfmiddot Lt fJer LC

~ v

of th lode~J in tL Ien Y1Bre ap arently~rjmLtHr in (rverlt)11

I )compOfJ i tion hut (Hl( It)d (~ (No 15 OT tmiddotn er on hCc ~muth-

ern Blope of illeen IUl1 VI repor1iod by j801 11)1 to be COlnshy

posed of nUBrZ vd th Clt Itttle sidf~rite and It a tood dt~al of

gelcma and considerable (plarlttties of ct1Jillary and fEdty

jrJesofl t~tt A apeeimcn inth() Tar3IDmiddotttl1an MttSGum Co11eltytiou

no )4lt 1middot~1i(gt1]emiddot~t n-iCJmiddot+~U ~- ~ It middotmiddot t 111-1 ln11- bull jJi nmiddotloor 7 1 ~ J rJ ltgtJt~I~Iamp11 - tmiddot J J vir UL 1 Lt~~iAJ t~hM l-~Q t U~~k middotQVi t

is in keepi ng ~dth Vi111~rts dHcrlption ofthe or~h This

GCcimen COIHdstJ (if 2lJ(1r1z and eider te eOf~tfn 1ji ~~ fcltetl

lH~UliHH) of G ftfH aotculrtT mitHHltll whtoh h~)j heen 1dentlfI(1d

~ 1-( ] middottmiddotmiddotmiddot- ~ I ~-~ of v ~middotl 1 1middotPmiddot middotmiddot tmiddot middotmiddot toshy~ J~Il bull n~ert e y v flS lton li-r (y 1vlJrtl6 t~l A r un 11

gr)Jh

Hyalite was r(gtc)rdea by Jet-ten1 (1910)t bUt tiH3 loenlity

Vias de~Jerib~r5 only es the Armiddot~entfiane Zeehan1t bull

Spmplee ror tho fJJgtcmiddotaratjon of polhthnc1 sect cnD W~re

collected flOI~ f1rrfn~a Bumps nenr 111e v~UtOUB workings in

p)dition E1Jome poli8hc(1 Elections VJGre prearerl frcn~l seCimens

in hc Truun[~nian Museum Collection

~rhe spJ9cimrm( co~ri2t l~lrgoly of galena Irlil pyrt te ~dth

97

middot1 lOr 3)1poundmiddotmiddot] gt~1+ ~ t gt -bull guJ( t (l r tbullbull 1 1 middotmiddotmiddotz ~Fmiddotr 11HLL bull liri vt 1I~ L ~lt ~l)t v Jt j~ ~tv ~~~-l lt A ~ 1bull I~-~t3

ltmoufrl21 of t1rfJ ElW pTIl t~ clvdcoIyri ~O tctrnedri te boul shy

oJ1gerite bOl1rnoni td yrlrcyrjte~ pylriiOi1 rnnrcmiddotosi e

iH1d fJtamd fln iero 13tlDO OrUGlvn1 iL IJolLhec1 sectionu

AlthOllghlho jJopolti on) of he rnel~j or cOllstitccmiddotntu

vnrl C fliddrnbly 1)eG7Elcn spceimom galen t - clcmdnaht

J1letDtlic m~nj8reJ_ t~1 mOfJti t3I)ecinlOtl~ ~tllll()lJf~~1011middotti middot~-~~-L3 [le~

rp ~tmiddot_ 11bull) - 1 7 It 1 bull y C fi 41( 1 b-lJ J~ L3 (llmiddot l Jt1 Jgt-tflJ J~ tlb middot~jCJlh i 3bull1 1bullbull1 L1shy

( lmiddotmiddotCmiddotT YI 0 f lt1gt1 1 l~ ~~ n (-)~~lll vmiddotmiddot 1middotmiddotmiddot1 1 1 l~) j )ll~ bull1_ ~t)L 1J Igt 1 bull_ ~_ _ tl~ I~) I~~ -iU fI ly( l lt ~ ~j t Jl t J ~ gtv _ L~tJll

c~ i 7 (f ( rvOOr - 0 2middot5middotpmiddot) lmiddoti tJl(1middotmiddotmiddot)middot[~middotl-middotiJ ~I_J J- bull _ L_U ~l~ 0 ~ -~ tA ~ U tllr01Jmiddotc1iOl~t gt11t3rlfl~f

i 77 94) 11gt bullbullbull bull1 bullbull + +lt~ bullbull+ ~ c 1 + ( 9b t) 10 I1middotdL x) e (Hl~Li tc lt11 f7bJ Jn

U)clrimerlG ()o111coi1 fl~orn 1lw outhcrn nnd JOUth-VfCS tort

lJortionJ of tlJl are A 11imiddottle t~trlle(1[Llt3 j fl pound11so 31300shy

1+ ~~ t1~ bo ~n gt1 j- )l1 rmiddot] tl n+~ middotmiddott~t ] ~ ltcmiddotbull1middotmiddotlt (11 et] t~ 01 It bulleuc n t 9 b-llt ~ I o I

~Itmiddot ill ~~middotr tmiddottTmiddot~ ~~ -11 1( bull t ~_) of ~~(rmiddotmiddot ~ ~ ~ltlCJ n~nltt (f) 316)kiSS JC ilL ~ v r 0 1ltbull id Jl 0 In ciE ~Pj ~iLI() bull

BOUTnoni(iC Was ObBervGc1 ~V inelusion1 middotimiddotchin ~Ghe ffiEVH3ve

Y-ln ~ onl c)(~nvl (n 39 4) rr~ bOUlOImiddotlmiddotJ otImiddotlmiddot_fJJlt~ Q _t i j V~Jt_~ 1 e~ Jli tl ~r 4 lt ~]t 40$ _ t ~I~ ~J~lJllt $ 1

iorm rLre not eomrnor in this ~lpecjme3 and oceur)l fmH~Jl

( 0 0 )1middotmiddot ) 1)0 lttt I rmiddotmiddot 1 In I ne ~11i t LIO u- ~ t~~t lti JJJCkS-

BOlll[ln-_~erl is a1ao present in t~lG g)18DA in most

itijc1men0 ftn~ OC01)rs a3 fifle middotn00ne - ent J2odmiddot-like boI1~s

dmiddot~~t~bmiddotmiddotmiddot= llT(middot rh middotimiddotmiddoth middot~leImiddotmiddotmiddot NIl l1 0 vimlmiddot lenctmiddotl bull of 1fU t -J t1el lH~ middot tl~~ J - f~~~- ~ 1_i~ l~ 1- Lf~-~~ ~ 111 ~ H f bull Htmiddot-

boOtes io O1rmn bu~ tll~~ major1t cl-re lefl0 thGtl OO]lln

lcceJd orKIl conlIKai te o1Jane~rite - te trthedri te hod iE~S

nOA~C ] ( f) __ f) 1 -I- 1 Ollirl 0 Ct-UI r ol bull ly c~ l rc shyrOxe J 2 1 6 ) ~ul 1- tng 111lll Ulgt bull~dl~

ntf~d fine bOi11(~M tho b()ulnForiiE~ 1 oec~1 onally conc(~n-

J(Iated lI1tosmal1 ar()c~fl up [0 O15mrol ln overall v-ilJth 1-1thshy

98

in th3 gale-ne- (ag P 314)

~arKyrite was observed in only one specimen (p80

collectec1 from dumps tt the fro 2 Argent Mine) and ooours

130 oCCEt~ionalfine Lncll2s1ons sporanically clistributea

through the galenZ rho she-pe of these inclusions varies

from ovate to irrcvular aud the size ranges from ()02rnm

to O07mm

Pyrite 1f3 d-sserriinaled throughout much of the quar1z

and ~jderiCe ganfue as l(1ihmclphtc and aubidiomOJI)hic

cryatats rnng1ng f)om 001[(]1 up to hom ell1c1 also ooeuts

as fi1EU3Hive mateIial in po ~ehea up to ~h)ver~lcentiliietres

~~ 11 11tu J a i )0lt~ lt08 middot ~1middotlIt lI blt61~ 1 -h011 shyfjmiddotJl bull )middotr-tmiddotmiddot+ IY ~)e it) ~lAC J J

erite arl(1 appears to hfwe bt)(m par1i1ally re-rJ11ced by the

bull1] ro ~ ~~1 tmiddotemiddotf 117 r~)l1l -bull on 1 11 (Pl1lt ramp kmiddotL~ vmiddot~ V ~ i~ lth-L i V J V 1 4ji ~j UJ )tf~ _ IOi- ~ I ~ Y -

tiro ) l1l_ r n ~middotmiddotO It bull bull ( 0 1) 73) ) r~ D 0 middotcmiddotmiddot e ~ 11 bull e LU a 1 ee middotJlmiddotns eurol bull 1 1 L ~ cmiddot ur lt~

l(ltomorphio crystals (001 - O1ryu1) within mUJSive gnlentt

bmiddot lr 0middotmiddot11gt (middots 1) 7lt3 10 J middot~middot~ImiddotmiddotClmiddot1 it-1111 Po middot~t f tlQlttJ Lllt ( t J ~~t~raquo- J(t~ J~_VAv l ~_ltItjv~ -ampu (~~1 middotctu

am) fractures withIn mf~fJ3tife pyrite A cJIiJnl1 amount of

tertrRherlri te aHel chalcoIllite is Olt1ct-tslonally ansocinted 11th

middotir-middot nl C1l1~j~ 1 tls o~O~~_Igt +r4n 110 rygtmiddotj1-lt Amiddotr o-V Q t)middot middotmiddot1~middotmiddot~ 44 _ ~ ~ V --4~ww~gt VfiVmiddots - (i l l_JC_ JGl-J

nI+e) 111 4n 1 n~JmiddotOmiddotmiddotllnbullbullCiiJl-~IdJSO

(0 31 5 t U J~ J ltgt middotrmiddotmiddotoUJ middotmiddot tbullbull 31() 8bull

c lLulters of LH olnorphLe cryottlla wijh tiSsoolatea pyrjtet

(~ ~ Omiddoth middot middot (iJjb P Cl) ltc j l i bull 1 ltC -1middotI f1 bull 0) et reo ) 1) Ch 01 1]0 cry3 bO_ eCloo1 jJ middotr ] lIi 1oJl to 1 0

w1 tillnpyri t e f gotJ en8 gnd qU~lrmiddottz

lt~~middot~middotImiddot n~- - lC0 ~I 11~ d~-i~VI t-l hUV1l)~O ~ Jlt-t J lJ 1middotij t~ ~f~~c -middotcmiddotLsllI _~ampJ tl t~lt QkJC-J--4uWXoltlQf ctJ~ If_~

~t) ~~itJ~ j 1-t ipo tl~ J 7 W + ~)middotl Elfl1re_Jtmiddotnt~ tmiddot - lIyc S(i-~(lt~Q t cmiddot~gt soot~wr~t1---U~+e~ ) ru~ L~t~ 711 bullbull e l] i ~ liP efn-l~ l~en xtPImiddotmiddottvnltT rA) (1 tyiJ~3rtCi ipound tol ~(~tZbull~ C~ij c~JmiddotV tI v~middot ~ -) L y $J(~OQJ ilI

99

)-1- ~n O middot~middot - 1n]] ~ p~lti 0a h Cf ~ttlll t11~~r)fi bullt1poundl (1lt~J t~ S ~) Jl~_~ ~_ --ttJ- ~-trlJ fl middot J Ati l t 1 ~l (l]v

Ht) )iltTr tI bull(Plrlte 5 The size of ~ho8e inclus1ouo rnXlge9 f(om

T1- 17 (0- 11(~fr-) - cc1 rn-11al 1-trtlt (t 6middot 0 7))v ~ry _ n_ bullj) 11 ) gtJ_ v I 1 bull~ - 1 C I t J

Fil(1 exsollrtJOtl blb~J err cYlcopyriLc ~r( corrrrrion wjtshy

i n tlieuro Hrh11eri te il 811lt1 O(~C~l_t(Jnal finEl bod ie of lWXZhotite

are ftho present lJheehEtlcopyritQ bleb~3 aro rnrely lcfrt~or

than 0 005mm Ylliereas middotV~c pyrr1Joti te bot J C~j which are

ecmern11y 10lt1-11 e nro let111efHJ 001 ~r(l O015rrnelt in length

The oodles of Dh~lcopyritit nudo pyrrhoti te raIC~ly show any

flgflPeuroHlt in t1~e8e c clrKHHJ Ch~~Jcopyrit(- W1S 10 OOC2d2lshy

11 d 1 1 (1 )lOntL y Of3t~umiddotve a ong fmiddotpnnLer10 -middot)J_JfGI eonJCdJ J b

In iboGC CefIEJH11hc ch~11eop~lriLe - )Irn~J miJ1ON c1tsconti nUOllS

r l)mlt ( to 0 (1f J ~J l ) omiddot-J middot1 middotmiddotmiddot1middotmiddotL) lc1lt -~ 1-laquo bull I ~( _ J ~~l-~ VfJ (1 vJ~1J Jl IiJJ)l_l~_trJlJIi Jl Ji-shy

50110 A littln c~middotFlcoIr1middott8 ocnut]Cf inclufJionl OO1rrun

Mt-l ~)l 1 C~ 1 lt-i t~ r~1 rmiddotJ1middotLaIlt~ (il ~~3) gt~otot 0 (3r~~f in W4~~1 11 _ 1 J~ tl 1 ~j~A ~~ ~ bull~ ltCQ bull J _ ~L 1 t) t ~JJI t 1 CJli1Li-~l

T~T1lt] I e (p 7deg)ktlmiddotJ ~-~ bull

iinrcnrd to L rr1tc jn middotthffH 3Joctnerw tUl oeeuro only

q (of jmiddot~-t1 l - l-i~ I -1 bull ~ (() ()3) t middotmiddot1 +- - Gcgt Ine tct ~ _1 n ldhgt~ ltll JJYIJ bullbull 0 bull w cdU1 v( ~a

also lHre anrl W3J) orH~rved ~8 11110 incluiiorJo 1 thin ptrei t0

(J83) bull

till 1 J (1 QiC) e~) -t- (1 ll~ bull~ IP1 l ~ gt 1[ middott J u LI(p~ 1 J imiddotiJIJmiddot l~middotmiddotmiddotv JmiddotJ~~i ~t~ Io lA (-~ b ~

L~J1ann5 te in a specimen of ore frclDlrgent rrlltt According

to Smiddottillwells clc8ctiptton9 the stannjte N[lS intinmiddotc tely

atmoci ate-a with chlcoryrite and fJphlJertte

----

1004

Alteurolilbl~tnp of [0 middoti~~0pmiddot1ltgtNllili~1-o ~~~~t-~J -~~~t _ f~middot

COlnrron Galonn - Piri be Q)Jl~mGl - Gphtlleri te Galena ~ ~e~reledrite

13-(i111~t]1tlteri-t e t~~~~llt~ tl~1

1)~ll41 middottc~ S i t~~ 11 (~)middotL 1-e hnJCOrrT1tc - 31J1(1[11 tc

1 OflEt - PYI~middotlmiddott( _ 3I)lr~-middotte1~lte

Arsenopyri e - lyrLte

Infrequent 1S i~ 110p~lriG e b()ulCttls~eJ~lmiddotGe ~srtl (~rlf1

bcs ono l1yri je bournon~

roenopyrite hourlloni tf - tEltrHhedri Le lJf3 e 11C IYJ~ ri 1~ e gC3JJ t1 f1~~

trHHtop~tri te pirrj te - teiXltoihedritB l rr ~ ~1 () IYlL ~r~ e t~ ~ac~middoti~drj 1e Boulan)eri te galena - aphalerite ji IJ

-P

I

tlf~~ 1

-~middott emiddot pound1middotfl]Cott ~ middot~~c t et 4 ~ middottc tr~3J1edrmiddotimiddotte

J30urnonite shy t1 1CHlt 1h)tlCfi ) rd E~ shy rrtteIknuIW~d te shy pyrite - tetrahedrite Ch81copy1 + ( fclerlc~

Chrdc()pVri -te galeml - pyrite shyte trahcdri ~e

Ghnleo ryri1ltl- galenEt sIlhllerite (-1~I ~ ~r~ - 1 k __ COPy r 2 le Pf J lG-

lrI f~trJmiddotmiddotL+(--middot1middotJ middot bt1 lt lo bullbull bullbullt v I ~o _ v

Galena - sphal eri le - tlstrtht d rj ~ e M~middotrcn8tte - plrite Jgtvrl~e- tetrD1HJ(1 rj te Prrhotlte - sphleclte

Rare 11oulzotngertte - l)yr~ugyrt te - g-JJeno BoulDerite - fJp1middotial~Hmiddoti La te t[~hedrj1o

Gnlena - PY~trBmiddotsrItfJ -ietjrah(~drite

Grderw - pyrrhct1 te - ergt er te 0 1middot middot11 ctnmiddot -Egt t fl 4 ~ I-~- Q t-- i t ~J vmiddot

I r IU

Florenee jnewlllilooNlt J )

rho WOlkll1G ofh Ploimiddotence rHi ne Ctre looct 011 Lho

Ploxoce rid o ri gttl1~1 (lCL~rteuroLt~Yl t~ 1 d ~ (jf x1 3 rrl lJFft F11e

Ctgtr e(3-EF~ 3( C f Imiddothettlitl Dllftft if~~ s~ ~t1) toi1 ()~1 t t J Y ~-( ~ v- ~~ ~_l ~ bull J i t u gt L~J

- f~ p~e~ np j~1middot~middot1-~rmiddottf ohnmiddotltrid t) middott~1or s22~fmiddott~s Ail 1 L~ bull - -lt r~_t 1~)l ~ ~ ~ ~ tti ~l J_~b~~L t

locFlted nm~l th tor o-rgte ridge abnnt 110 Sar(ln em1t of

c in~li11 s~-middot~8ft [~rHl (~1r~r1ets ~jl1ft_flt lOC-1J1~Edl 55 yr~J7fB 11or~tll

Q f1 t 0 lt tl) (21 rn~ ~111 f~ Jlmiddotf) f~ t~ bull

rho fol10witJ ~lt~crjption of h( ni teologjr of

-tmiddotl~ ~l~(middotimiddot _t ~ ~~~ lrrgt1~~ ~-~ _~ i] -~ CtCe~~4~ (1 ()(2)Ul w- pImiddot t0 - ~ -l 2 -) h~~JV b

tfTlE mnJ n bGJt YJd WIZFgttCrl workin~~1 rrc wi tdn hIghljt

rat1lerEH greywlt3tcke t g1(OH~rllfih ~liltfJtone 1 grcien piJrple

and grey ula ties f)minr part of the Cambrian Crinson CreeJt

lolwationEarrt of t 1H) fMtin shaft the C id)l nn 1)Ot3l are

pound1u1 ted ug 1 nni ~ 1G turb-d p~lle nrey scnd~middottone lpebbly gr5I6

aBmiddot~ igncl J middoturtmiddotz~ tJ~ (rf-1 l~ C-n) whichl1nd 1e middotmiddotmiddotl_ 0Jlt~ Co1 middottmiddot l~~~ JJ J dC i l -t-1lbull ~_tv)

outcror at th~ north0rn cnd of ihe Florence Ri dgEJ It

1 1-04 r 11gt1 11 -l- ~i - ~-l middot 1 middot1J 1~Jer ) G j bullbull _ lJ~~U f8v lgtII~ ~-rh J_rH~middot 15shy

cC)iero(1 i11 tJlN3C YJor1inil3 were knolvn HS leltaj1middott a Dunkle~rts

lIortOl1 3 t Curr1 e bullB tlOfJ fInd Fhl)er lmiddotrf s l~odepoundl WaIler

rOf(gtvCdC(~ l)tmlrlcYs lcdfj middotU) et COl1tinLRt1il1 of CTtlrh3li lodcv

nmiddotl ~~~Att (1~Dmiddot2) ~~Q 120middotmiddot+ 1 1 t 1F1 I I L()(letln dbullLl_ tfl-c I 1 lmiddotJk Q~[jC)-c-3 40 - foE Pl ~ bull id eI u-y 0

fomatio1 fJJay llOt tHWO boen [i true lode but rnther a postshy

minerttllzatton fiult plene

CkLlem1 and Tid ~Xiie an~ the only rl1LlHr~111 rffJOrtijO by

Nul1er and no silvi31r vnluBG of the ore wer-e p-tven Accortlshy

102

in(~ to WaIler Curtie t a IJodeccutrLined up to H feet of

solid gal~Hlat but fnoat of the production to tJlr~t date hnt1

CQme from the lTtnin tJorking~i whoIeApoundltle t El Lode var5ecl in

~vidth from 8 few inches up -to two feet

Anotrmr lode cllt in tic trenoh about 400 feet northshy

east of tlU mflin ghafb Wat reported by Hnl1er to contatn

kaolin oarrying UIl to 2000 OZlh of kdlver per ton The

slIver wElJJprel3llinahly In tH~ fOTel of cerargyrite of another

of ihe oilver ha-lilIes This arnentIferouj kaclinmate1LBl

I ( 11-1 n t~ 10 k pound~lymiddotJassu Juit J 1 J )lt1 F ~d

The only mtltermiddoti~~l to ho found 011111() f3urface dttfilpsin

the vicini tr of th(~ IlorfillCe Nane corudsti8 of oLderi1iG Vd th

IrlltCl3B ef geleua

10)

poundaount Zeohan Mine

~rhe r()iJnt Z 1~ firl 0 (01lt1) 1()ltiilt~~L-1aL i~L ~(~~ (1 tJI_ Lf il L1ti middotthe New ltount

Z l~n noOJbull rI ) er 1-(0 01 ~J n-)3 Olti0 fH r~J cl -j Je~u ~ld1 bull Jorl~middotmiddot__ _ 1 t _m to

be pegged in the Zeehnn fi cId T10 mn~i- n ohcft i loctJted

wLlhlnhe ovmf3l115 HIlroxi(fnely 500 yardfJ north-northshy

east of tho Plorencc Mine

u (102) asf~)J j (~et+ - ) )~ J12H3 cl escriberl thE hoot roe ie tl greyshy~~c1)1

wck() s11ts 1oncsnCl 1Lle helieved to be nl1r-L or tbe

CrtnB01l Creek Formcltion

HClort1 ind5cflte that ora consistcrj of g~JHI)bull with

Cf C1~--rn i~~ (11l- Cd lt~Imiddotmiddotimiddot r~~]j~J (1 P1)j~ ~J J~~ ~~Jl1~_L~i bull L ~~ ~ (I (~- ~~lt~il~bull ~)- ~j4tr ~Q ~~ ~J-tdJ

rmiddot 0 h1 (~I b 11 middotmiddotcmiddotqmiddot~ r 191frClirtt(J try t22 ton J middot 0 ~~- ~ LVet_ U 6 Etimiddotj~~(gtmiddotlil) v l(

~ rmiddotil middot1 ~7) r middotmiddot1~ f-bull t 0- 1lt~ ((~3)euro eUJ )OZc 0 j~iTeJ -er on lt hO bull1ligtOP~IJ r

-Lof-eltll rtn aw~v of rjCF 1(middot1 poundU)11 76 oZltJ of i1 vr npr IOl1lt1 J 1 T_bull -~1I1 1 - A-J- middot ~- ~~ ~ ItiJ ~ t~

Lcmiddotl wJA JjA ~) omiddotp tcmiddot EI- 00~r-l _b J Lmiddot

lFf~tmiddot~middotrmiddot7(1qn()v rj Olmiddot~otU Ugt4j bull v -i 11middotmiddot0 101middotmiddotJ 111~iu2~H bull I a 1 lt

Qmi~~L ~ (1R~j~) OVfjcllsj to from ~hr Wlovnt ZeehfHl Mine J ~(~~nt~J~bull 1 LL

Vory 11ttle material noigt rcm~Jins Ott the nurfaee 1umps

1~md no specimens pounduttcble for 1n1 necDlciloEll exmI1 ntJtt 011

i Il

cmiddoto~~td 1) Ottl1Cl

104 Stonnedown Minebull j bull 1 middotmiddot 1-

Tho worldn~a known not-he Stormsdowu Jili no at IJfe~l$nt

operated on a fmr111 aC11e bJf mr 1) DUlUtley are lceated

onmiddottlw l1orth-wet~1 slOIJeS ofjlteen Hill above the rr1~tl

H3rbour-Zeehall road Hnd north of the old Zeohan tleen workingn

Blisaeti (1960) eJrnrflnet and c1escribeltl the work1ngs

which eonsist of two adits aml a SID111 open cu1 (see eig5

of JJ15ssett) bull The mineral1zation was c1eaoritHif by Blisettbull

as consisting of ixregulnr maSl3eurolS and veins of pyri tpoundl conshy

ta1nhlgvery fine-rfraillod tin JIsaays were earried out by

tho Department of W1ines on a rrrpresentHttve sample of 92 Iba

of soft Xlyrttic ore from No 1 adtt and on 15 Iba of hard

pyrJ t1c OTt-) from dvmps ruanr the open cut Ihe sof-I ore

aHJaye1 413~ tin and the hrn~J ore O587~ tln (Bliaaett1960)

Vanning tests f aIso carried out by tIle Department of Mines

gave recoverie~3 of 30 to 50 for the )oft ore and 16 to 401amp

for the hard ore

ffhe host rocks were descrihed by (BliBlSErtt 19601962)

as narj shales a1 1tstones and quartzite~l wi th ~associ~~ted

spilite flows

rbe ~1oftpyrjtic ore from No 1 antt consjsts largely

of pyrite and quartz (P3C5) Both minercds hnve been 111shy

tensvely fracmiddottured aml the pYri middotte is extenniveljr d ecmnposed

in parts A sample of tLin ore WCli dried crushed to -200

mesh and sBpC1rated in bromoform rhe 8fJparated fracti one

were examined Ullder thE~ microscope and the heavy fraction

10~j bull

found middotto conttdn occmiddottsional fj on gYains of CI1St31middotteri te

rnnging in fJjze frorr O001rnm to O015mrn These grdns

wore aSfocfatefl i th bo-tll the pyrite Emd the quartz ~Che

fJtle grain-size of 1he casstterjte Rnd the intimate ar-H~oe-

tati 011 with the prr1 -tiCl nw1 CIUErtz would accourrt for the

poor recovery Ln the vanningtEmts

n3 1r~ + c middot~-tt - -j- J 4 jl() 1 n(~-l t ~] gt onsi +fi~ J ll tJI 1 vL ~ fa middotI~~ ~ ~~ 0 -JL Ji 1 ~ ~ f J c~ _1 1 j ~ -w -ti

lr~rr0bl of Pyri tef-md oUtrtz but vdtb ndUOT gflena and bull tI -~

t~phaleritea Trllces ofnne CtlSsiteri te lNe~~ again noted

nB grnins from O005mm to CJ01rnrr Ni th1nl)c 1yr1te ftno

quartz Hphalerite is ~s8oclt)t0d N1th the mHmive PTritlt) to OO)~ middot

( [) Or-)middot f ~ l bull i - f 0 n1 elY 1 0 bull J ) lt2$ _ln J no -us ul1o rt1llf~1 ncs J[~ kX aUd 1 jJ

occmrs tlS occfuJjltmal pfttchet~ up middotto 2cw in ()volrl1 width

~~thn lmiddothmiddot - -1- ( bullbull no) rhmiddotmiddot middotl-0l middott -tnimiddot i Jpi l_~ J uaJ 2 L Ji g ij~~ ell e con -gt rt) ne vGshy

iOfla of grJenC-t and eX801ution bOtl 5NJ of pyrrbotite ~md

chalcopyrt1(h GaleuD 50 f1issemjn~ded through Home spectFlens

bull 01 le Q -r ~ t l i ll1-h ( C1)a amp OeUIo ~B O~~R~lon~_ Bl~ct ~v 0 1cmbull~n w_~ 0 L~

Fine bolieSJ of te1middotrfl(9iJrj_ttj~ sflOing H vnri[ltlol1 in size

from O(051TIm middot~o O02mm and a variation In flhare from round

to lrregular are iicrnfIeally ~ifrtrib1Jtpd Ghrou~~h the

~Tletlfj Hnra 1 nc1udons of ehn1copyritla VGre noti~d in the

g~11enCJ nudminor nmounts of 0lsenoyri te and lTiBrcsite Bre

assoc1ntec1 vdth thrpyr~cc

A0ftor0irl~ ~middoto ~J~~na~tmiddot (1060) ~ lJ ~ J J exploIutory- work haS3h~)wnL ili~)1j~

1110 presence of c1t le)at 3CO Lons of the oft pyri tic ore

middotP11ssr+middott) r luox-teurod~ middot-tj-hlmiddotI 18ter-ti bull1 l exmiddotlmiddotmiddotmiddotn(1rmiddot- iJ~ ~ ~Q ~A -~ 11 4f oeT lel1cchshyIt 10 -~j

of 29 feet in No 1 a(~it and he cOtlsideredthat it marked

106J

a fnult zone which hnhattered an irreular plritie ore

body

Srwrplei colleclf~r1 frow the open cut near the enteance

to No 2 adi t cons~l st almost entirely Jf mSlwive pyrl te with

Fartz (P8889304) Fyrrhotjte 1s presenmiddott in 188 as fine

tl1clueions of irre--1l1ar ~1hape wit~h1n middotthe lwrite The size

of thC(H1 inclusions r11Hre8 from O01rmn to O03mm A

trace of fine efl-SFit tart -GC was ~lgain noted 88 rnre gauins

(C005mm - OOtrnm) within the pyrtte ana qUBrtz

A forther Ddit kncrnn as Dunns Tunnel is loc~]ted

325 feot north of No 2 i~dj t of the St()rm~i(lownMlne ~5arl)plea

collected from the dumps at the enmiddottrmiddotrweagcd n (~Ons8t

laIfsel of pyrite ilnd Clllllrtz (P bull8S-8T) but orH~ specimen

(P(6) contains a narrow seam of galena 3mm in width

Included 1tlihe gr~lenH are OCCi=IJllonal fine oVHte-$h~ped

middotbodfasof tatrahedri ie wi~h a maximum size of O025mrn x

O012mm and rare minute bo~iel~ (0 005mm) of boulangeri middottie

Occastcma1 r~ine stann1 e inclusions are sporsdieally d1sshy

tribute] through -he yr-Ita as lrr~~((ularly Sll~3pcmiddotl bodies

T ~- rrin- ~ comiddot gt ~ 0 oor- ~ 0 r)) ~ 1 tmiddott1 l 1 tl~ n oJe I J O 1 )fllj 1gt0 tim -~ 1 e spJa eL) e

1 C Iresent as intersti ttal material betwHen py-ri te crystHls

in r85 ftnd thE sphaleri (a conli13im3 fine blebf3 of ehalshy

copyri tu and pyrrho i tie

107

bull~a13eml)lages of 9r m111errls

COlll1non Pyrite Golens

- sphalerjte - pyrite

Infreuent Arsanopyri te - p~lri te Cassi terIte - p)ri te C1ialcopyri to - sphaleri te Galena - sphaler1te Galon~ - middotte ra1u~drite wa~eas1te - pyrite Pyr1 te - galena- $ph~Jer1te Pyri te - pyrrhotite Pyrite - stannite Pyrrhott te - sphaleri10

Rare ASlimopyrite BoultlngeriteC18lcopyrite ChnJcopyrjmiddotte

gnlena galona lsnllt1flL1

- galena - tetrnhedrite

108 Z0ehan (~ueen r~ine bull bull iN It _ - bull

The worki tlIfJ of t 1HJ Zeehan Quaell Mine are lCH~ai-ed 011

the north-west slr)pes oflueen Hill and Ln the vt111ey of

~ueen Creel bctH~an ~ueen Hill and Oonah Hill rrhese warkshy

lags are al~lo known as the SUveriueen Mine slnce the

Zeahan llueen Co Ltd operatied workings cllt~velopei1 carlier

by tihe Si Ivarltlueen Prospecting Aasoet=Jtion N 1 bull

Blisset-t (1962) h3s reported that the ore-bodies occur

within a ttghtly folcledaequenee of 81ate ailmiddottstone ltlnd

pale-wea lherlng qllartzi te cOlltaining flows of spill tic lava

which is considQred to be pr-lrt of the Oonah Quartzi to f1Ud

Slate ft bull

Pfrtial oimcrj IJilotll3 of thE1 or-kings wore included in

reports ly rVloritgorr~ery (1893 1895) WaIler (1904) Bnd fwelveshy

trees nnd ife~1rr1 (1910) These descriptioym were summarized

by 111isaaii (1962)

The ore holli es were i()rlai~ frorl1 fou~~ Bhafts llnrl altho-ugh

SOlne rich ore was extracted the mineralization was aIJit~rently

patehj- Several lodes were relorted inmiddot)0ee workinr~s and

it is appflrent from the above reortfJ thnt theHc w(re flfHZHJre

lodes conoh1ting largely of galena aJl(~ ~dderi e wtth pY1i to

l)CltHHnlng more qlnlndmt a dejth

A pyril(1 - stannite - galena lodet knmvn tlB Clarkes lode

was first explored in nn tldit near the rriol Hartour road ana

later worked from No (110 feet) IJcvel and No 2 (210 feet)

Level of Uo t shaft Aecordios to 1fElcrlimiddottiofiG of Montgomshy

ery (1895) WaIler (1904) and Twelvetrees cmd Wrtrd (1910)

---

109

Clarketa Lode was a ~lell-dofined pyritic lodee(mr to six 1

feet in WidiJh contrdning bancls ()f st8l~ite anJ1 gnlena yenIt th

a little chalcopyrl te and tetrahedrJ te Table 2 contHtna

partial analyses of pieked SHnples of the etanni te or~

TABLE 2

Composltton of stanniis ore CIHrld~s Iiod(J Zoehall)Jeen J1Une

( 1) ( 2) (3)

Ou() 89 16 124

( (r))u a1] 14 125

Pb() 6 6

3102() 7 -Ag(OZB per ton) 57 78 724

( 1 ) Picked E1Mlple of ore fwsaysd in Oonah 1(lne laborHtor~ (Twelvetrees and Ward 1910p133)

(2) AfHJUY of 20 tons of ore(Twelvetroeo 811laquo Warltl t 1910p134)

( 3 ) lro bull 0 f to i M - 0r1gt-tl ] -1- rld t Clt y Qf ~ C~~sect4_1 ~ tJ gt~ l1jio ~Ita ~Jto ~n (~f~ t~LQillgtO I~iol-

(Quarler ending 31st )tleerlbor 19(4p11)

jmiddot1onmiddottgomery (1 n95) rdso rocorcledtillC1 de ore con~tnining

uri(~h gal(iiml rm~ siliceoms pulverulent matlEJr cfcrrylng c~r-

bonate Drl(l ()xide of 10((1 nl1cl chlortde of fdlver was extracted

fr-O~l the uiper workl nn of No 2 shnft no Petterd( 1910)

reportor the presence of Qt~tcrunit(~ bindlleimi tG eertumite

nnd emholj te in tha oxjr~ize~ zone of the~ueen llOrld Itth

Pe1tltHd oclao reeordei1 an unconfirmed report of croco1teaa

small crystrtls in fossan

Jotterd (OpC1tp73) deDCXfbed an OCCirrence of frankshy

linite HS tlalnorphous and crlst811ine bunches intermixed wimiddotlh

110

galena mainly at middotthe 200 ft level Silver (Zeehen) Queen

fJflne u bull In the absence of any specimens or further informshy

ation it 1$ not posstble to verify this report

Thclasll1(mian Musuem collection contatno one srntlll

sp~)cimen of pyromorphi te (X 3~78) and one specimen labelled

leadhtllitet (X 2169) which according to the records are

frOill middotthe Silver (Zeehan) ~Jueen Mine The ~leadhtl1ite has

beentdenttfied by me8m~ of X-r~~y cHffraclicm fH~ cerusstte

The surface dliipS in the vicirlj ty of thn abandoned

Zeehan iueen workings now eontnin very little mtterlal of

use in a mineralogical study Some 6amp~ euroIS conijn G~(l11

amOU01iS Or sphHlnri ta flyri te anrl gal~na tmt most of he

sampleH are heavily weathered bull rlH3 leaHmr~nian Huseum

collection eOlltsJne sevezal f~pecimemg of ore frOTi the ~~ee-han

queen Mine and these provided the majortty of the polished

sections prep~lred for thje study

MO~Jt of the SpeCilMmS consist eS1Hrtially of massive

g~tlena but sphaleri le and pyri middotta are alao quite commonbull

Minor amountB of houlangerite bournontte tctrahedrite

ehalcopyrite pyrrhotite arsenopyrj te marcastte stonnite

and caasiterlte were tllso observ9(~ inhe polished sections

I1he gangue e011st1tuenta are sicleri-le and quartz ~he stanshy

tIt tie OtJJ from CIBrkes IJode is quite different in composi tion

and 11111 be deHcrjbli~f1 separately

tr]v~ galena from thE ZeehanlUeen Mine ii1 invadably

SIHilaxel ~nid exhibi to a fJistinct ardnotroptsm Incl1sdons of

other sulphides are common within the fM-Sfdv-e galerm but the

111

nrdure of hese ineluntons varies betwen sp8cirrwns Ijoulshy

at11geri te is common in all galna specimens as fine bo11es of

variable shape anl size The mO$t~ common 9h111)e13 of tJ1C

houl~Jngerite hod1es ar~ neelt11e-LPe (mCl ovnto an these

r(uge frOff very fine (O001mm) up to O5J111n in length

Boulangerite is paJti(1)l~)rly eommon in P247 whf$re tr ia

concentrated into OCC8f-iQnal snmll areas middotthe largest of

whtch merctsures5mm x 3mm t within tlH3 galone In some

Djlecime-ns (egPbull 9424-8) theflneedlen of bOlllaniertJeuroI ~lre

altgned alongcrystallographic pltilHJlt-l inth( gllena

Bournoni 10 is COIDJ1l0n flS 1nl1usions wi 1hin gnlena in

many 8pecimeno(eg P249250) but iH f~btjent or rare 111

other The moat frequentl~olH3erve(l shapes of the bot1tshy

nonitie inclusions are round nrldovate nno thf~ 13ize of these

l Amiddot~middotmiddot V~j 8 4trmiddotOl~Imiddot 0 C~OllIl1 to 0 O2rmiddottl~ middotOnsmiddot ofiPl lmiddotJfrmiddotbo ~ ~~ t ~r 1 t bull - -)I ~A l bull )~-rJl1~ l tmiddot~ J ~ 1 ~tJ~ t

irregularlyshpped areus t up tlt O25mm inovernll width were

nolefl tn 1249 Composite boulangexite - b01utlOn5to in-ill

clusions were Ob8GllTod

Tetrahertri te OeC1JrS 38 inclu1d0119 in g11~ma in~lome

fspecimens (P248-250) but it ls not common mineral in these

samples of Zaehlnmiddot~ueen ore The inclusiol1( are generally

roaml to ovate in shape aflr1 range from O005mm to O03mm

in size Occaalonal compod to boulnugerite - te1irahedrite

auel bournoni te-tetrahedr1 te inclmiions were noted in the

gt11cntl (P247249)

Inclusions 01 splalerite are ~llwrYrJ present wi thin the

galcl1th 1]l heae are of irregular shapo 0fHl Ihc oV(3rall Width

112

of thG lnclusions v~tlie~] from less than O01mrn up to 1cm

Occasional ~JpeCimOn8 of ore (~onsismiddott of ma~lSive spllnJer-1te

(P100-102245) wtth mlnor gfdfma occurring as tneluaions

up to 1mm in width The sphalerite 110 moderately dtlrk in

hnnd specimen

J~x001ut1on blabs of chnlcopyrite BJ1d pyrrhotite are

a ~middott 1-1 1-0 r-i ~~ mrl-lBS Ifgt blba vlr hOII middotltln nGodla shy1middotJ~vQtt J~l jt~J middotJlmiddotgtmiddotmiddotmiddotmiddot- Q Qv ~ ~- v G~ c -1 lI ~Ji~v ~1-

like am1 Civ1ite in h~je and are ~arely groc1ter middotthan O01mm

in l~H1gth ~the distrlbutlon of the chalcopyri1e ~uld pyrrhQshy

tite through the f3phaleri 1e is rather sjoradic the bIeba

being abundRnt inSOlil( parte but ahaelt in otihersP248

ont4n omiddotr-ionjCl -trmiddotG11n l w smiddoth middotmiddot-J t~middotmiddotclut~middotjt 0( -yrrtI1_middot1 bull gtijJ j ~cQ _gt --) bull1 -1 _~1~jj-~l Jbullbull l J - _-~li~U 1 Jvf Lt

timiddotte (OOtmm - 0 08mm) v1 thtn the galena Hlld pyri1~e P-rite iB corUTlon ill some ~1pe(jmens (egP94102)out

Irua in otheIs (ep P95250) and generally OCcttra as

idiomorjhic god subi(1iolIOrIJfHto crystals TiElnging from O011-un

to (J15 mm Arsenopyrite is present 1n HOID(J 6recimena (13102

248249) as a minor constituent associJtelt with pyrite Emd

gr~lena Marcas1 le iB not common but occurs in ~mJl1 arnonnta

) middot-111n ~~ bull tt ~ltlfl anI gt -4n p 10middot2 n 24P j L 1 J L ~umiddott tl 4 ltt L _ IJ

Sttlrmitie WHS notied as fine (O002mm - O05mm) inclusionst

of irregularshzlpe wi 1hin the galen~ 111 P 94 Hare grnills

of C~srJ1terU~e were nOed wtthfn galena ud sphr~lerite in

P93 the maximu~ size observed beingO025mm x O005mm

The only sample of stHrmite ore (amiddotlarkss l()d~~) aveurodl shy

abl e for s turly VH1Sl H single specimen (X 341P99) in -the

Tr~F3l)anian Museunl col1ec middotion fhifl is ver similEtto atannlte

11)

ore 1Xoll the Ooneh Miml (FJee pp 116-fJ 4-) tH1d consists essenshy

tial1y of stanni t8 and pyrite with minor chaleopyri ta galena

hisrrtuthini te arsenopyrie tea tirahedri te eaSi3i tari te and

Ciunrtz

The maselve staonite in this specimen is veined by

pyrite galena and (~hnlc()pyritee lrhe pyri te veins are rel shy

atjvely bro8d being up to 2mm in wldth and contain quartz

as tnterstitial material between tihe ldlomorphic pyrtte

crystals Galena occurs $sveins up to 1mm in li1iclth 1-n the

stannite and these veins merge into the pyri-te veins

Chalcupyrite is present ne abundant very fine cries-crossing

and branching veilllets (considered to b( aegreglttton veins)

rHlging in wtrlth frmn OOOtroII to O02mrrl Those vei nlets

often J11erge to fl)rnl small areas of chalcopyri te si thin the

stann5 taMinute blabs (leas than O001mm) of chalcopyrjte

are abundant inmiddot some areas of the stannile

Cassi tari te occurs as very fine greinsand seoms occupyshy

ing the cores of the vein1 ete of ehaJeopyri te rlliE1 aSSt~mshy

blage has also been noted in stannite from t~e OonBh Mine

(see pllq ) These aeams of casedtari to are noxj7lally no

grerdier than O002mm in width t and only a minor amount of

the CBs~3i4eriii- Vms obHeved without the Hurrounding she0tth

of chalcopyrite

Bismuthini te occllpies occul1onal IUS S wjth1 n the stanshy

nttethe larg~~smiddott area observed being 15mtn x O3mm

Tetrahedrt te occurs aa small veins wi thin the stanni ia and

also in small inmiddotterst1 tlal areas (O02mm ) aS20ctated with

114

pjtIlte and smiddottannite ATsenopyrite is not cQrnmon hvt is

present as occasional clu~1tfHS of IniOffloriJhic cryst c-ls

asJocioted Wl - the Ijyrjte

Petterd (1910) reported thRt at8nnite frorr Clarkes Iorle

assayed 3~wt of gold per ton

Assemblages of ore minernls bull bull bull J - bull bull I ~

(excluJing etaJlnite ore from Clilr1rcs Jotle)

Comwon

Infre iuent

Hare

BoUl~mgeritie - gnlena Galena - sphalerite G111fma - pyrt te Bournonite - galena Pyr5tf3 - S phr~ 1eri te Galena - plri ta - spl)) leri te

AraenOmlri te Alsenopyr-i te Arsenopyrite lrsenoiyri te 13oulangertte Boulangeri te Boull1ngeurori tie BOl11angerite BOl~JJngerite

Bournordte -Bournonite -Bournonite shyB~)ultlOnj te shyChalcopJrrite

---------

gC1tlena gtllcm8 - HplnJeri e pyritie sphleritc bournonite - gpJena gl)lene - pyrite galerm - rphalcrtt~

gHlena - tetflihedrt te sp11-leri te - tetrahedrite

gnJ~mn - pyri te galena - sphalerite gplenn - tetrahe~rite

s thaleri A8 - S(i~l11(~cjte

G-ilena - wHrcasi te Galena - pyrrho t1 e GRlena - Bph~lerite - tetrohedrite G81ena - stannite Pyrrhotite - sph81erite GIJlena - tetr~hedrimiddotfe

Marccu~ite shy

C3Bsi-t(rite Casei tart to ChEllco iyri te

pyriie

- glena - galena - sJlhalertte

grtlerl9 Galrma - pyri te - spl ifllerl te - t~tr8shy

hl(~dri te G81onn Pyri to

sphaleritepyrrhotite

- atnnite

115

i OlmI] )tH o~ ore Iinr~1~~illJlgt_~iIY (cttJ bull l _H ~Igt t ~

(Stannite ore Clarkes Lode)

T)r t middott - -t- ~ Common ~~l] El - Sdnn1be Chrl1co yrt~lJ stcrm5 te GaleoR - ataunite Caned terite - chnlct)pyrl te - atanni te Galena - pyrtte

Infreuent ArH3Uopyri te - bisIlIl1hinite - strmnj te Arsenopyri tiB - pyrl1e f1ISEwopyri e - stanni to Bit~rmlthinite - crI lcopyr1lio - strlrlt te Bismn1thini te - galena Bi~HTlu1hinite - pyri te - stnnrd te J3j ~)muthini te - stcnn1te CafHJ1 tari te - atrmnitie Chtlcopyri he - gsden1 - smiddottannite Caleopyri te - p rj te - tlt nnite GslGua - pyrtte - stnnite ~Pyrie - fd~nnl Ge - tctrnhedrt e S tanni te -fe tIhedrjtts

Hare Bism~thinite - cassiterite CltiiJ3frl terite - g~llena

I)O~lh ~H ~h_~middot~middot~ If~A t

The wOl~ing8 oP the Oonah Mine are located on the southshy

OCJcmiddott t ~~(lcgt 01 OOYjrll--1 =1 dJymiddotr i1TI~tlyH~-I 1-~-rJ]n 1j tpJ Igt~~ ~ _ ~ lt- l I1ill r -f c VA It~~t (irl_ 11 V lh

Z~ehan qllItHan worki 0118

J31hma tt (1962) has described th~~ conntrY IO(i~B as 1Hdng

pert of the Oonah middotmiddotduartzjmiddotte Dnl1 Slate with interbe(lded spitlshy

t te floI~3

De13cr1 ptions of thworkings fit vari OtH~ st~1ges were

included in reports by Montgomery (H393 18(5) Twelvetrees

(1901a)liallcr (1904) and lwelvetrees (m(l ~rd (1910) 2nd

have b~en summarized by Blimett (1962)

llwelve tr~ea RtllilrI1 (1910) recognized ttmiddotvo punllel 10(1 (B

viz n galena lof~ cm 01 fltal1ni Le lode lgte galGnll lode

CrsiBred of galena wlth HXJ1]erj te cnd pyr51e ir) sideritie

antuFrtz ganglO This g1(oa wa~s reportHd to conLnin up

to 127 oZ of slIver er middotton Cwelvetrees (1901) recorded

that SOm(i HiHDO aslOciaicll wi th the lldnnn lOI~0 eont~dned

1 lVer chlorjd (~ aKHl rwtivo sIJ 1101 and ar3snyerl up to 420 OZfh

of lvP-t 1 rnmiddote bull e gtJmiddottn middot 0 10 e middotmiddotmiddot c rt111lmiddotv1nbull J bull3 tc-tmiddot r 6- Tmiddotlo1middotmiddotmiddot ~ - shyk u1 middot

gtven fi~)n Yli~ of from 50 t 12( OZB of silver per ton

Pel~tterd (1910 p147) Iecordedthe FmiddotreaerHH of pyroltilpni ta

elosraly tJsao(l3te1 wt V pyri 1(1 in eel1uJ a1 ~Aflrtztt at the

Oonah Mine

Tu~ fJtnnj 1( Inde has a eomp1ex miiHualiW nnn Iiiththe

CYC()llon of Clnrkffi Il0th in the ZeEhan)lJeen aref~ ia unshy

li~e otherbdes in t~e Zeeh~n district Stillwell (1931)

117

reportea on the mineraloGS of the st~nnitfj lodp ~tfld middotSdards

( 1 (951) i~middotj qcu pr] lh n siJJnl fi Cfnce of thE te~middottmiddotur- 01 lnr(l of -4 ~ J _ t J ~ ~ ~ J l ~ 0 ~ vi iJ~ ~

the minE1rJB ampHOC j i tel wi t~h the ~ltctUnJ te Preml1s1y pubshy

llshed analYHHi of stennil~ ore from the Gonah Mine 1e

nhown in fable 3

~luemiddottres f~ i middotrd (1910) 10 rmiddotmiddotv1rmiddotmiddott1 l- a~~covmiddoteyt n r lli Jgt 7 Lt ~ r ~t ~ f) ~ 1-~ ~ _ i ~ lI I _I 1 4

of a narrow vpounddn of c9mdteri te nnll pyri tt~ 1 in the hill

eAst of the gully near the (Oonah) mine

lt l ri JLl~Jj jJ_~~ ~

h bull

Comp08i tion of ~3tnni ie Oonah fh1ne

( 1 ) (2 ) (3)

Cu( i~) 26 77 55 107 vu(f) 23 91 4 ~) 92

l~e(~G) 12 11 26-7

13i (~~) 227 04-0 45 Tr

Sb(1f) 0505 Tr

ls( s) rI 44

Zn(q 0475 ( f)) 5J 3~) 1 29 2975

S102(~) 14 22-27 230

A 0 (d) 4-5 220~2 3 F

Ag(OZS per ton) 97 3 22 63

f1) Stnnnlte Analyslshy J H Levir~s (Annu9lHeport of

n t Q ~~ bull 1ne 7 ~ 3 l )uecre ary or i j lne 118 tI

1 11 ) 0(1 o-P Qt 1 1(gt (f -] tmiddotmiddot bullbull qrd(2) J bullnnYJlbull~ J ore Wbull ve tees ttmiddot l~

1910 p 53) (3) f)l lt1) 01~ 7 C) - of_ tmiddot ro U(tmiddoto ne- =L) ~ i~middotmiddotImiddot~ JJ Q 1 u ~ or lwrl in October

1903 (WaIler 1904 pS)

118

TbH mf1jortty of the ~lpecimens ueH1~ in thiB minernlogical

s tudy are from tYH2 co 11eclioflS of ~lV 11IJ[H111anVuseum

Hobilrt ard the J1Jeen Victori~ tiHeVm L~nmceston In [middotv1dit shy

ion further stitrnpl(m were collected 1IOn1 fHlXince dumpf~ near

the rlbwdoned OonD1 Mine vorkingiJ ifjththe eycgtDj1ion of

two Bpecimen~l ofaletw ore the specimens are apgttIltHrtly

from middotthe trmnt t~ lode

tll middott l I omiddot -1 I 1r 11deg ~ to nnrmiddot 1 0(1 ~ri middotlmiddot eJ le igt dJ1n e e coos s ~ ( ge cl 0 ~dt El - ty )

wj rh nd nor nmoun Ls of chalcopyrite flrHHw~ritE hi snnlthshy

in te pftlenD cnsHl terjte sphnlerI te wolfrrd Letetrashy

herttH nnd bournoni te jnd middottrace mfJounts of bouJnngert te

rcmd covsllj terhe mtnor Ol1n tiampuent vruY conslderablJ

b(tWeuroHHl sre~lrheuroHui t tHFi t 1i oomplex rm tUl(~ oP tho ore is

il1ustrJteil by the 11 t of oberved orem1n(-)r -1 f1sBEHl1hlag(fle

The non-rrl1t~111 (~ g ngve ccn 1fljpound 0 - fuClrtz Iliith 8 Ll tt li

fJJd 11 t~e ~w1 fluor1 te

13 tUwi te oectire lfJ mn~Jsi le fltltertal showtn rr rvell-dJnlelshy

O]Iit1 1n tt-ice I)nd lrnrellqr twinning In mome f1 e(l~tl1HH1 t f lf

tnni t - IV~ yIitJ1 r- fo-m ellvI tfImiddotfmiddotmiddotinmiddot~rlU ~middotnmiddotl t ~ ~tJ -middotmiddot-id-lmiddotS v0 ~~ it j j l jJl ~ t ~l l~~t 1 n llo ~ lf

indi vi rlFt1fl b~nds varyin frOlj 1tt1m up to 1cm

C1 r11c)pyrite- t CtlSfd tart te ~nd st-mni te are e Inse1

8flSOC1 ted Ch lco-pyri te oceurs throughcilrt the stfHmi ta as

abUYHLllt fi ne (~tJ fw-cro8sjn~- arul hranching vs-inlets t ne

f3mHll arEWS of irreular shae 1nd as m1nute blebs l~d-

wrdf~ (1951) interpreted ttlt~ texturql relItio1wmiddotd J r33 1nshy

~ iot~t middottin ft P~Soll h 11 0 (f h 1 co r1fTJ ltbullbull tJ f rrmJ~ bull middot111middotmiddot t~Vlr-t tL middotto It bull l1-~~ bull - e ) ~ tgt_ - ~ I bullbull _ bullJl iJIJJi

tre bull Jmiddotn 0 -llmiddotmiddotCr)middotmiddot middotlrp rcgt nr-rerTtton v~-in tJ~ ( ~ V 10 - _t~ ~~ J ~ J __ iS t ~t t~ _ Qi G euro~ ~~)ltd ( ~ ii~ bull

119shy

r~IO fOm p O-f CO cmiddot~ middotlmiddot r 4 e wer~ not bw l11middotcltogtYO)(middot (00 cmiddotl t)ymiddotit Ji ~_11I - middottIltJiI~L-I iJi- f-I oIIlJtC ~~ L~jj _

One form (eg P1619) OCCUrf3 in the st~~nnlmiddott(~ nnd alt30 ln

othlHmincrlls ~f C1U8t()S of ftrH eryst)s tPhe jm11virluampl

cryntals Inge from O002mm - O075mm in size and clul1teIa

up tjO 1wm in eve-raIl wtc1 ~~h wem observo( _ ihen these

cryst1ls ()f C1isrd leri te re Ob(E~rved wi thin st-nnt l(t ~hey

~ i vn ~l qT 1 1 lT (0 (101 IT _ 0 (1 1 )ar) o_ r )y middothrroune narrow bull mh tbull m

rim of rh~~leopyrltf) whteh is fUHJOOIOff to hewe exsolvef from

le ~Jtmd te Tbhl cafd (~rit) is cons ideredto b of

jlimafJ origl n

The second Hl more 1lbunt1nt form of c asi tier te was

rfgt~re(2 to lmiddotlr fdvq~(h ~flt Itmiddotegtrtl1p in PhJ Cl occurr only1 bull ~~ - J v ~J bullbullbull ~ bullbull Ja eti (lt~ tt bull w~ jJ bull J bull vJ _ bullbull

vl ~ICtmiddoth~lc(nymiddotr]c - )~~ld Vlt v UlI +-~~ c~bullWl_ ~liVl middotth~~ vt l)~ ~1c-l1)tmiddot in higt ~j Uimiddot t ~I ( r)15

g fi) ~n(l -i~ dimiddottilCt in n ernce -fIOn themiddot -rarfT middotmiddotcr1 1ol _ bull 0 l1I ~ J 1middot ~ _~ 4 _I L pound ~~

Rhove Te neetle~tn ocoupie13 the cenLral regiorm omiddotr many

~~e n~rlAOYI~~- ~~i~1~0~ ~~~lln t~~ ntn~l~~l~ft (D1 n t- 6)O tJitlIJo -v 11 -) j tJ 1 J ~ V U laquo1 Ir F __ It 1 UC P ~~ l- I)w L ~~t ~

~nil as noted by fgt~vmrd thmiddotS vrid th tor e ehllccrPJrtte veinshy

let i~~ inv~~dably in nirect i1rOpoltionto tle id th of the

semiddotmiddotm of needle middottin The cen trpl cores of CFHHliteri middotc IJre

gH1 erg11y between OOOlnIr ~mrl O016tnm in width In some of

th cc tI j ~ ( D Of~) f 1 h(T e l)C menl a_ bull Jv ~Ya1ney tbe ptOtent fll) t~or bull

very fjn~ ~ryst811jne pyrite is also nssociate~ ~ith the

seeWB ront11ni VY clv l lcopyrtte fud needleti1 11

lJhe la tiGrrre ta lj on of the t eclures vd11 be ti 8cusied

fUxmiddott1ier in the followlng section hut Edwar1 o h S trr~fHmted

evLderwe which lJ1Fpests that the needle lgtin has retmlted from

a Iiartlal d~iJs()ciajion of atrmIte pos1bly chlE to fr1cturshy

120

ing whU ~~ the stulntte WHS above some crj tlcaJ t~PlperatuTe

Pyrite and 8tsenopyri te are often closely associ3ted

afl idtoffJOrIld c ~mG -ubiH ollorp)ic cfys tnlEJ ranr~i ng t n Bize

from O02mfTi up to 1mEe Intergrowths of th( two miner) s

ory~C 110(~_J t wcgt1 (af n bull Bmiddotmiddott I 1 iIt f~middot lmiddot i )~middotmiddotvmiddot~~Jl TC t)I-)so_ v tmiddot~ 11) Ll lgtni rfl ttJLtmiddot

to hove b(~~en fraCrlalTEF1 tmtl the fractures are occupj ed by

ofh(jT minerals in partieulnr by stnrmite ch11cOlfrite

and biBlnuthint te

Telrahedri to 1 eommon 1 n severed specimens of stannite

(er P1396301) nnd iH 90metimes assorjltei~ 7dth the

ehlcopyri Le veinle ts d thtn the st~1nni te LenticlL3r

shaped hod1eg of tetralHdrjte up to O25mrfi x O05mp were

also noted ithin bismuth5nit(t in some Gecl1lleill3 (19111) bull bull gt -

E1smuthinjte is n promioet mino (OtH3~imiddottueuro~nt of nevshy

eral specimen) (egP13 1796) and ocnnrsrs small patJches

up to several millimetres across Dismuthini te occur in

osselnblages 1ilit1it 10St of the other ore minerftlf t lW1 tihe

textures sugcrest replacement of moat of thi)flf by the biHll1Uthshy

lni te

Galena ia not COmI110n in the 11trmni te ore DJ1f1 is minly

Comiddotfine(1 to smsdl trregularlymiddot fJhmiddotlpecl 3reas (ege P1~) ftlfISOCshy

iated with the nI] sive stul1rJi to and pyrit( ani] as fine

inclusions in ch~lcopyrit~ 101 biHl1xuthinite Occasional fine

bodies oftetrf~helrite were Ob~HrVe(l in middotthe middot[remiddot~s of galena

Bournonite ahw occurs as small areas (ag P1617)mmally

in iJsso~iation with the gal EHltl an~ middottne two rlinercxls exhibit

ttmutual bound~rl~~s II texture BOmiddot~J-Ynonite 18 clonely aBsociaten

121

wi th the tetrahadrita lnchudons within the ertnrmite tn P 19

Boulallgerite W2S observed as a trace constituent only

(P 98213) and occurs as ftne needle-lile crystals with1n

bismuthlni te and bournont te

Covelli te 1mB noted in trace emounts confined to the

chalcoprrtte vellllets in tlllamiddotstarmite (P9698)

Volfram te was reported by Twelvetracs and Ward (1910)

and has been observed asa minor constituent in P13 and 214

Clhn 1f101fr2Jnimiddotte is associrted with pyr1to and quartz and

occurs as subidiomorphic erystals up to 1wJ1 aoross

Sphalerite is COInrfon in only one of the~je srecimons of

the stannite ore (P11) antl waH not recorded bjr eith~~r

8ttllwell (1931) or Edwards (1951) rhe strmiddot1nmiddotni te inP11

hitsthe appear~HICe of having hoen intEHlslly fracmiddott~uced with

sph81erite occupying the fracturei2 and hHving lttrially 1eshy

placer] the atannl te along the frtctures CPlate 7 No1)

Tha sphaleri t( ~Rnd ~torlnite are occasitf1fill1y (oJepatated by a

rwrrow(O001 - O002mrd horder of chnlcoj)lrite anrl the

apha1eri ~e contniH rirle exsolution hlebs of chalcopyrtte

Therwo ~pecimen8 represented bl P3CO Rl1d 373 arg poasshy

il)ly 8 YnlioQ ofomiddotmiddote frol 1-1- JYO] c 101lt0 P 31)0 Clq Qts 1)middot1shyltpoundbullbull r~y lIJiJ _ L tJ~ Vo J)(J l ijtt J~ ~Ut -t~~_ t~

rnOfJt entirelj1 of massive gnJena and qunrtz gangue Tetra shy

hedri to 1nd hournonLte Hre present wi tIlin the galnna as row1

ovate and irregulall shtljH)C bodies ranging ifl size from

O O ~middotmiddotrmiddot t~ 0 _J_~~imiddot ~fij nmiddot jlrr-l 1 middott fIt_0 gttA~V1 ( cJt Legt (J nemiddot 1cmiddot-~bull r bull Ii J O7j htm _ )1 ~ VI VImiddot4 Jtmiddotmiddot ergt t

morphJc crystals which appear to hnve been extensiVt~ly repl~ced

by the galena P 373 is an associntion or ~JiJer1tel (lUfrtz

sphalerl temiddot ~lnd gl~18rHh(rhe sph~ er5~e COfltlna Inre m1nute

1]1- o~middot~J tJcomiddotmiddotmiddotmiddotmiddotmiddotr~middott~~~ tt1~lJ 1v(f Ifo ampt~_p rr middot1-0~~i_L~ jr~t~l Ztl~ FlY yk1 rrh-~i J(~ r)t J ~ bull 0

lesG middotJan OC1rnm A little pyrjte cmd rnar~alt0 1 190

prElSCfl ctgtnnite was not observerl tn e1-ther ofl~hese

HH3cirnens bull

~~bmiddott L t f$ Ot~-h~ vV~ist rd-J~vt Oonlh~-- ilne~ (~~t thel li- 4 11(gt ~f t ~_~~ ( J oS n_ ~ J ~~

ltorkirjtlts of BrrH112hnws Lode Twelvetres and Ward (1910)

Jep()rmiddot-ted1~h~th0 ora corwJ3ted of pyrie w1 th f)OTtl0 6t1$oa

13n] a If t ~le chlcopyrite The ore was rgtlno reported to

flr-jsay 03 to O4j~ tin ~3imi lar (ira was reported in Pastshy

kuchensLode about 300 yar(~~) Wlct of J1rllishaws Lode

ehc RIJthor W~-I3 ulwhle to O-itajn spec11Tlons of ()n~ frorn rdther

lOCC11ity

123

Assem1lltiw~C o~

$A middot1middot _

Common

nfrt ~u(~nmiddot~ R ~~ ~O

(201 bull nn~~~ 1 J~ ~ +- oreID) ~t ~ ~lJ lnnl uL~

Pyrite - atnunite Ch lcopyrl tie - st nnJle rsenocyr5 tf~ - pyrl te ChCtlcopyrt to - pr1te - stsmni te C8ssiLerite - nh~~]_copyrite ~ St nnite ArfHH10pyri~e - PYIite - stimni to ArB~mopyrlte - ch lcopyrJlc - st~)nni te GClsst tori te - s tnnni tie Bismuthinite ~ stannjte Ch)lcoPJrj to -stnnrdljo -tetTIlhedri te Arsenopyri tc - sttmni 13e

Arc enopyri te b1SHUthini te Arr~enomrite bi ~nnu thinite - pyrite Arseno )ui te bj smumiddottdni teuro - st11nnite Arsenopyrite Ol11rrlO ni middotte pyrj te l~r2~~Jo_pyrjte bouIlontte G~~Hrmite

trsenopyri te bournorJ1 te st~mni le shytctrahedrite

ArsenopSTi to - casa1terite ArFlQ101JS-ri tf~ - gH18rw - yri te ArHmopyri te - p~rrjte - 1etr~hEri te Hi smu t~1j ni te - bOUTnonl e HismutIltllite - chlcopyrite BimnuthLnite - nhnlcopyrite - stnnitG Bismuthinite - galeru~ Bi8muthjnj~e ~ pyrite Bismuthi nite - pyrile -stannjie Ri snmthini~e - p7rite -tc txHhedrj Ge B smnthl (d te - iillhaleri te - stannite Bi~31nut~ nJ te - middottr~trah8dtite

BonTnord te - ch~Ilcopyrj t~ - atarmi te Bournonjte ~ Iona Bonrnordmiddott(~ - grtlena - stqnrd te BouInoni tcmiddot - flyr tE~ - stnnn1 e 13ournoni-tmiddot) - pyrj-te - fitnnife - totr1lhedrite Bu~rncrJi tc - fltnrmi te Bournon1te - 9t~nnite ~ tetr~hedrlte

Bournonite - tetrmiddot)1f~~dImiddot te C1ssi ter1 te - halcopyri te - pyrj tie - atannite (ri fj S middotLel~i t(~ pyr~i tt~

CaHli teri te - pyr5tie - stnnni e Cl121copyri Le - grltJena n~ ] t 0- 1 t I bullbull 11 )bullbullco~middotlrle - t~middotnlti - s nIlj~e

Cha( eOI)r1-ite py~ct te Chalcopyrite - shnlerite Ch21copyrite - sphelerite - st7Dnite Galena - pyrite Galena - pyr1te - st8nnite Galena - BphalerlteGalena - shmiddotmiddotlerl~c ~ stannite

124shy

Infrecuent (hlella - stanni te (co~t) Galena - middottetrp~e0rite

Pyrite - sihalerite Pyrite - 8~lsleri~a - st8nnite S le-rite - StrH11cii te ~)tanni f - tet~(llIHr~rj t~l

Hare t 1~f3 e 1101~ei t c bisrmlth5 nlte - e~) -copyri tie Fyr-jte - star-mite

Arsenopri te hismuthini tH - temiddottrmiddot htsdri te Uiemuthinite boulangerjte Bt~~ml1tfinite - 02Ha1terl te Bismuthinite chalcoprri te - tetrahed 11 te 13ournonJ te c8ss1terite - pyrite - stannite Bournonite - chalcopyrtte - glcmH - tirtannlte BOlJrllOrdte - prrite - tetXrlhedrite C~~ssiteIite - cht11copyritj~ - stnnni te

- tetrrhelrite Ca-ssi tari te - galerw Ghnlcopyri te - cGvel1i te Chalcopyri to - woIfrm5e Pyrite - wolfr~m te Stanni 1e - lNolfrpmi te

Assembla~e~l of ore minerr10 - g~tlBnl ore MM cl jj J bull bull

Comrfton Galenn - sph 1erJ te (j~ 1 f~ rlt~ Pi ri e Bournoni te - gnleon Gslena - tetrahedrite

Infre uent G-e1Ema - rn8re~sI te GalenH - p)lri -te - sphol(rite Marcasite - pyrite Pyrite - 8r~Gler1te

CyIQlopyrmiddotll 01 -11 1~r~_ pHare I_ t J ~IC iJ l-~ lt bullbullbull +t t ~ bull

Eyrrholi te - ~Jph leri tie

125

Junction llinebullbull u __~

1rho worklnftn of he Junetton Mine ar~~ locrteo ~tpprox-

iFultely 300 yards soutl-werJt of ihe ZH~hm-Western IJtine Qnd

approximatelyl-mile north-e8st of the OonahMine

frJ 1~ hOi~t rQ(~S fLrf) J)t of the Oonah Juarmiddottzi te and

q~t--or (~~fflot~~middotJbull~_iOQj- d It bullVohoC1 19~)~)

~~he 11orcfirJ of ~hB SUl10tolon Mine hrve hi3en mentioned

h-otrgtfly by iIIQ tmiddotoory (1r~()3 1P)OC) n-~ Hplle (1904) IltC 1 bullbullbull lJ _ JI__ t 1 -1 1 1J h ~_I _ ~ V

Jmction Lode Wl1]iS rof1led from four levels and W)J3 apparentshy

ly t~ ]olxtihern continUFlti on of No 1 TJode of the Zeehrynshy

V~~Gtern mJne

It is diffLCl11t ID obtatn a clHT pictllr~ of the rninershy

alogy of orreg from the Junction Mine hut the reports t m1lcshy

atethathc ore vn~s low in overoll grade twlt ronsisted

0R(H)poundrt iol1y of si deri te gangue with small veinc ~nd rttches

of galena After thE Jllnctton Go cEtised operations in 1901

F JJtllty of trilmiorfJ reworked the sl0fes for bwl1rdtle

~omF)n C)l1tdn1ng up to 120 OBS of fd -v~~r l)(~r ton Petterd

(1 01(~) ren~-ta~ ~~4 -~ft~n~D A~ ftmbol~~~ ~n ~~0 ~()~l~~an) J pound_ v tJ t ~ ~i A I-~ 1 t amp-1 v C -1 Wl J_ J~ 1 ~J G ~ f 1 bull

Vpound1rJl few fJ1gecirrt~ns caul b(~ obtdneo for middotthhJ Dtudy and

the IninoraJogi cal doscri tiCin lNhi eh follovlB 1l1tlS lHtJ provide

a represent~tive picture of the over81 composition 6f the

ore Two specimenn afore from the Junction Mtne were obshy

tninel1 from the ~nurn[1njm Museul1 collection bUt only a small

nJliT~hr of sarq)leD of low gllWde rn~tteriDl could he fOlWd in

chunps near the 010 worlj ngi3

rho Tin n me ldlic COrlCi-tt t 1iiTt oft~teuro fg i ecimc~n8 i(J glena

----__--------------------shy

126

with wo11cr arnounts of l3pll~erite i3Wl Iwrtte 1n a gU1gue

of ~dd Gxlte nOJ nmounts oftecraledri tc t bou1~mgfirJ ee

hournonLte ch31copyrJ to ~md orscH1opyri te were nJf3o ObG9rved

n

llbutlt51)nt fi rH1 inelu~ions of tetraher1ri te bOltlangert to and

hournoni te The te trlthedrite hod j es v8r1 j n ~1l1Dpe from

irrerrulur to rourH~ ~n(t ovniie and rangE) in size from O001mm

Ull to O 075mm The Inrger tetrahedrite borHes are ocr]lsionshy

llly fH3Sociate1 VIi th smnl1 chalcopyrit( bo(~ics Cgt1JJ grtlpbic

~ lgt (r q 1 t~- t~l 1 - ~o VI -rq ] c (l 1middotmiddot ltl n~v I (l 299

mhD yen ~oc~iva ) ~ It -t W i- ~l ~O (~~ (Jl~ r ~t (N~ ~~ ~ J ~onmiddottn4n_ J~I Jflt 1 I~P~~~A~ 1 ~91An~ tl tJ fI 2rJ) A

lJ (Jeuroof t~)I ~JN ~t (1( ~J Ije Ifrt ~_ le _~~-l middotmiddotmiddotlt~1 1ltJj)f c-J M

j~ae1 t 7 No 2) bull B01l1~cngerimiddotte ei1srrtlly occnn as fine

needle-li e Clystclr betllfeenO005mm and on)rrim in length

but is Iso (wcnsioDnl1 pref3ent tn aroaB up to 1mm tn

wldth cOl1rtistine of rrtHH~le8 of tiLB fine needlB-ltlte crystals

( Jt56) BellIno A 1 +~ 4 1 bull lt~ CmiddotOmiddotmiddot1on1~ v middot10J1JJ(~ 1- JIlv ~ bull fJlamiddotmiddotdbull 1lJlt bull 1( tli~jll) +111~ middotE+rn t1 middot tj~

1 0 lmiddot~middotTt yen f1l 0 1 C ] v c 11 (0middot 0(]1 yl1 t- 0 tm)rJ u_middotdJgtIlvt a -iClLgt 01 middotS re bull gt rn C bull Ic

round ~H1tl ovnte1()~ics Winl1rr th8 m)-1sive gnJenrI

Sphalerite io preBen~ in the massive glena B~rr~le8 ~s

~trl3lflS lNhich aF)(~D J to htve bren extendvEly replacet1 rPhese

areas of 10])21 lsritc) C~Je normlly les thcw O5mn in overall

middotlmiddotd~middot1fl tmiddot SOT middotmiddotmiddotmiddot~)imiddotmiddotmiddotmiddot~lmmiddot nmiddot-e (e T) () l)~O~ l-~lrif V1 ilv ~~ ~~ ~ ~~ ~1d JmiddotS bull- bullbull) bullbull ~QtI _J(t t~ of

m8s~dve lle-hrovm 1JIhrlt1eTi to GnlenR tH prenent in ihe

rrt~sBi ve sphDler~lte a~J arena tlrtc 2mm in rddth wh1ch aPi1car

to have prlrttall rejltClce thr 8phi)JeI1 te G COlyri ie ex-

Holution blabs W~lre obBerI(~J in the 3phmiddotJelmiddotj1f r[11ElSf3 bodies

ranc~e frorn O0005mrn 10 OOOmm an OCetl~J1 onfdly f3hoW align-

went along crystnllogrsphic p~2ine in the ~t phnlertte Some

17

growth zoning waB no1cil in the sphalrri tc and in iAUmiddotts the

zoning ls defined br linepound o [middotlne ch~lcopyrLto hlobs as well

08 by colour bndn J30ul~HlS0rjte 3prenrG to hrvc pirlLcllly

rCJlaccd spJlcriLe tl I~56

Pyrl to 1s nOt common in most HFccirrens but does occur

Ct3 i ~ (0 middot02 nmiddotmiddot to 0 O ~middot ) CJbull ne bull _[ibull f bullJri J~iJbQ pmiddot t crJmiddotstmiddot1~3 poundilioradshy

01 middot1~middotmiddotmiddot b~ middotrmiddotlmiddotmiddot~r -rh t1l middotmiddot)middot1middotmiddot YId bull t 207J c bull LIlllrl ted J(ru~gt 0 bC ~ngt ft l bulleIl e ttbull

eons~jts of m~)fHdvc p~n~i Le wt -lh H11tl1 irregtlhlrly -3hapcc1

j ne ItlSioos of gCJlena and (middotb~lGoVyr510

29)Jl onlOmiddotlJ~_) C l_ yen o-f _ 111l CltJlt ~oUp~VJ Y - _ n( I bull 13 idioshy~ s t ~J l l occ1id ona1

morphic lnd Bvbiryiomorpdc CJf) t ls (Jj trHrutod through -the

Bid er middotte grlleue rH) tJso OC(lFud ontlly in as30ciaijon with

clnlcopyrito end tcrtrah8drtte

Assemblrmiddotues oj or~ T7li iHri31s n ~ t u ~

COmDon G]lene - ~mhaleImiddotlmiddotte

G lEma - tetraJH~d ri toe middotBouJangerite - glna lt I gt~ )1 ~Jegt ~~J~~ 1 fY do J

I nfr811ont Bou18ngeri te - galena - Sphlleri te 130lIbncerlte - gclena - to iiImiddothedrtte Bournontte - galena C~middotilcopyitc - gnleuron rxrlte C11jlcopyrtte - glena aphaLeri to Chnlcopyrlt8 - g21ena tBtrJ~edrite C1aleCiPirtte - )frite (~h~~~1cop~rite - I)ri tje lt~emiddottrel~rlrj~te

Ch~leopyrite- spl1leri te C~Bmiddotl~copyri-te - tetrnheRrite

_~~ 1 s~h~e~i+aolo a~n0~I ~~ritaIf~i - - J 1J8 Ji

~ lenn - spuqle iote - tctrjor1r1 lir1l v-~~a _ D~~lnA-~~o

~ tJ J J 1I ~ iI jpgt to J I II~

PyJite - tetraerld te

IlWlre i 113 8r1 ~~) l~l I~i1~ e ch bull leo ri (ita AraeuQPyr1 te tetrahedrt middotte 1301)19 npcri te ~ psri to - sphledte

12a

Ii~rlrl~~t~leJ~lmiddotmiddots ACl i middott Dbo vric) 11c l~nfrol tmiddot)middot ~lt 1middotTrgt11rmiddotmiddoth~middot1middotQ (1middot~1 (]80J A ~1bull -rmiddot- ~J VT 0 )_QI- _ ~l Q bull1bull ) r_

1~ bull~ n ~Itgt (~t) bull C ( 1) -gt1 locrtmiddot~ ~ middotrmiddotmiddottmiddot~1r rf) f ttnOtif~) n sa 011 ldrIG cc e ~ dUir-XJ tL-~r h eurole

El olrth of tIle JuncGi on Bhnft bull

t h4aAceorcling to J1_- e n (1904)7 ~~n~ t lo~n ~~~c-~r~~- tJ t lmiddot~ J t iJ ~ 3 I f t U ~i 1) i U t~ tL

ad i t cont)ined pyri 0 wilh argenti to nndplrlr~rltc

VlnlIEl Tlated tlEd tbr~ ore S1100t yenVim 40 feet ion length ilJ

t1n 0 Ct~~)+ 1ev~1 - qr 4 hl~ ~amn ~rr~~Ai ln ~ ~J~~~f LrpoundJ~~ 4() fQ~t daemiddotshy1~_ bull j - j l_Co_middot ~)-J 1bull V C-t - ~~ -l1 J

The hir~middoth si Ivr con t(Hrt of the ore la 1JlIfrtrated by -the

ft)11owlntr assay figures Those fL~)ro frG1C r ( 1 t-1 1904

- 1)(1) e ~ to ()~ JIC etrc+co-l -1 J_t-ltOCI~ [vurmiddotmiddotmiddotbullhHn f Amiddotbulldi-ishy)f-l~ -lq~n ~1middotmiddot lt Sl Lc J~e _ r

~D (o~~ ~ftr ton)lmiddott - l n e) vmiddot J 14

1 5tO(I1 7c-rrt 5135 lt) 4 14 134middot3t bull

(1)- 15 4-925

4 11 10 1]6 0

05 tU 0 30J)

OnlJi one s~cci1en of ore coul(l be founD in 1gthe nearby

duttpS and comarirlg ttie ~itll descrjption ef WaIler

( -fOClA) -) t Jr] (l 110 1 PYap 10 hi Cru1 ptlv tyl Cl 1 of ttle1 ) gt ~ bullbull ~ IG _ I~middot t 1 L L~ tf bull ~ 1 bullbull J~ v Jt _ J

ore rh1~~ FTiEchneu cons ~dfl 1rrtelf er g81nnL in a gangua

1 i 6r~ l I middot1t ~JJ1 IT If U r middottlt omiddotfmiddot rgt J h 3 r1 l of_ omiddot~ 4u~ 1IJ(~ ~-JVC ~J bull ~ ~~ J~ 1) J ivLmiddotmiddotmiddot onmiddot~ l~

Iiyrarfyri tfJ t bou1 angcri te eJ1d 8rgenti te were OblH~rVe1 in

poltshnd sectJoll yrite WHa not olmervet

~retXqhedritc incluolons in the gmiddot10Jrl~ arc) common 3nd

ore evenly 1 istributed through the grJlenJ TheJ shape of

129

~H~se ltincl~sionf) is varLble thiS rnDjortty are raLiHir ir-

reru1Gr anrl others Dre o1fote 1 e size ()f 1CGC bOlE cs

rtU1ges from OOC5nm to O1ncm

bull ~ ~11 bull OC 0 ace- i cjeC-l cmiddot~rr~dinlly ) _ I c J 1i - 1gt middotf bull - ltcmiddot __ lt Hj n k~L ) ~LJ -)i ~ lt) 0

1 t (to 1 nlt -yen 17 1) r~O3t middot pdistributed throU~l vS I (- (middot~lntmiddot- x u mAO bull O~_ _ o

these jneJiBion~l circrxtFate to rOlmd or )V[~tE Gw~je~l but

others have a lf ere8cenV S ll8 pe ilnlt1 30mG trregular fJhEfGS

are aloo pI(HHrnt~ The naximLun iJirncnson of the l)yrrugyrjte

hodies is general1~r 1Jbout OOJrnrn anO i~ r~lely greai(r

tlmn OOESmm

IklllmgeIttc Vine noted flS VEn~r fine rc)d-lU0 bodies 0 002

mm to O01mm it Lngth vritrdn -the irrlnn In ~JQrneuro garts

thCfJ() lH)(UCS flhOT ~liprli-rent nJcng two c~stHllogrFh1c dilecshy

tj om3 in the gslCrinbull

A smoll amount of argenttte yenlat~31so abue ved in the

galena The 8trgentlte boJi-es obseVcd werero1c11 (O025mrn

[lii~+) ovmiddott (0 nrmiddotmiddotr () 011 ) bullmiddot1 ltgt11 1 ro rlr 8l ~ ~J~~ v~l (~ C bull HJJ _ r J ll1U lit-gt N _ c v i I- rt~~-middotll=J

( ~-rmiddoto td11 O liL 0 bull 0 ) ~iIrli X1bmiddoti 0-middot X middot)u bull

hS~blllrcs of 9pound~Jl~illf~)1amp

GOlnmon G 10lKt - tetrnhect to

ItJfreCUEnt BulRn~erite - gnlnnq Gnlena - pyrargyri te

11Hre Argenti to - galcyw Glenn - pYlmiddotnryr-1e - t(trlttledritc

f 30

Znehun-cstern MineI I _

TIle abnnd () neel i n ~ft of the Zeeban - We8teI~ Mine

11 1 +~ -- pIs Inc atel Cpircxt ~ely -Lt e nOI 1-e u 0lt (she Oonrlh

ft[]rle on 1)( el)t1Cl~3ldr~ of iiLl Corinna ro1 about one

mi le fro- middotthe j1ulcti orl i ij the Tri 01 Har~)Gur nculd 9

Cfn~ gt ht ~rcgt t n he (1- Cmiddot~lmiddot 1 l1t- lmiddot~]f ~ ++ (10C2)J J(~ J~ 1 Cl t LVe v1l ~ L J emiddot I 3 0 J I )J

os fol1owo

The host rOCt Hre contorted hlaelf to gr(~erdBh-grey

shale and slaie vt t Et~ teurornatt ona of derk mtcaceotUl si 1tshysloncnc1 pJl~~ grf uartz1 te t 1)ml 1 mlfJ1ber ef interbedded flows of 80i1ite ()1 keratjophre (ttmalaphyre) The heds t~re prohablyhe nr~per pfU t of th Oonah Chartz1 te nnd Slai _ - and tihey were ttghtly foldad (Ilong NW trtfJing axes (luxlnI t~)lt TeJ)bernbb(~rw Jrogeny H

1 1 J rr (iQC gtb) J 0 h l +middott i C gt ImiddotV J - ~ - of1lt1 ~ Jlt tgt~ 1 bull)~( c bull 4 i C ( Cd Jmiddot ll t

middoth l~ Fo 1 I ~ (It L-l n) 1 tt~ 0middot gt etctil 1 JurlS tlt~n middotCS i B dSv l)_ lltl~ Ju

T1 t~middot - L l fn 7()pound1 C) bull 1 (lll El ~tB Ned eq 1 feet from the fl )rmiddotf ~- c e to No2

( 110ft~ J ) I~VQ31 t (cc rmiddotr d i VI -r- ~ llt tmiddot--~ ] r 3 ~ fl0lO lo ~f J ti 1 J ) er ~IIoi bull 11Jbull S roluemiddot i (Jo ~ bullbullt~ I( i)

veins comelisting irinc1 r[I11)7 of 11JC~ntjforo1uJ gelefF i n a

wnpIE of nL1 eri te vd tll some e~ 1(5 te rmc1middottlrtz ialler

wtedIIEtt pyrite ~) 1 cmiddot~flcofsrJ te were iJJoucnt in ttle ore

in t)0 101lt31 levs18 1)1t alTost ~~bS0nt 1n tJle upcr lEwols

Small amounts of )~) (~i te ~cr2~ nl90 no Lei by al1er In

l~tmiddotmiddot ro~ ~11 -T (11 G4 r~ L ~4 J tJ1 Lt t 1 _ Id ) 1 Ii J rem- rkec1 tl[j~ Gt the northern

encl of No 8 (500 ft ) Level tl1c InlenCt ore gave way to a

tetrshctcite - cnlccTiyrite l1Sfr~blage The -tetrahedrite

was reported to eontnin 270 ozs of siJver per ton but WOoS

)r-csent in only s~Rll 1uQn~jtieBbull

~P)J)l~lfj~I(~d aJB~l~l figuXtCfJ ()f tJ~tE~ rolrn~1 cmiddotovor l laRl~e j~n

illv cnrlt of F6ozc middotPt trp up to 16108 middot~tonQJ middotvd t t ~-) 13_ 1- ~middot~llo Ut 1~~L1J

_-_-__----------------------~

131

ScmiddotccimenteJ Dhila~Jf for rdJlingta~re_)l1c excunination weref ~_

cgn1n limi ted Ono IccirIiHl of ore llS ob tal nei from the

0011 ee ~ r)ll 01 +tmiddot 0 rmiddotemiddot lmiddotmiddot n1 middotkr -tmiddotmiddotlt ~)l h Cl Fmiddotmiddott (Clmiddott-middot t of _ u-Ji 11 ~lill4~ Jc(~L Jmiddotmiddotv L V~ -poundiJ ~~rgtJ~~ j

(i~ (~lyzrl -- (t n ~11 11 ()ot) -l-~ ~ l~ middot -- etor 1~ 1middot1 -f (r~tl Jd bullbull dbullbull l1Jd aleuroH~lLJbull no 1 0 bull110 sev~rlt ~LJ es l)~ eena

oonecntntiies WCHe o1rtnJ nod fro) tho ]gtsI1~n1n i~vr em collectshy

ion rho F1urfaee ChlE ilmJr the oIkin~3 ace IJoor jn min-

middotAltrl1rJ rqt~~~10 1 ~-)~li1ed ol-r G1lt11 lnbrmiddotJ of Fgtmiddotlmiddotmiddott shyIv__ eu ~ 1 ( Jt If v ~ 11 j t o bull ampL J 1 vJ 01

lJ middot~ltYmiddotmiddotJ~ lr( -]rrmiddotl~1middot~~ f +~~ 0 ~~ll middotL r (middotf~middotr r t~1-J 0 38lt) lB VC l ~ J eS1 viE OVe ~ 1J1d r~LoJ lo ule

f1~~ecjrtetlr~ eXarntn0~ is irl gcc~l [)[r~e1Gfnc~n~t Vii tmiddotJl 111G t(~Bcrlptiona

hl 1 ] LOcl (0 0()1 1(111 ) J I JJ t IC +

The mo[~t obvlouJ f~cdureG ofnll f3IJecJmena oxsuTLinea irl

1D1ished 00 on ftT8 t11u nlnwihmee of gal~nn nO tIle hlgh

C ~~~~~-t o~ toL~n~Q~-~~eJjJ~t-A l -1Jt _J~ ltrJ II_ bourrlO rd to f~J)(1 bou1 neri te as~ inshy

Cl1~sions in t 11_cc1euroH1a i5anor mnOLlnts of pyrlto rivh~middoterite

ch81coP7Tt t e pyr~lmiddotimiddotrItn arBencltpyr5 ~c 3~dmiddot ccncl1-Itc neurol

81so prNHmt

fretI~he~trite is common in 011 sJecimen3 of lenJ~ as

i rl~ 1~)sl )ftp or v~~J~l t3(i 1 c~ nt8 E lflG Bt ze I1t~ s ~middotlt~1reB Ob~3 Jrved

r~mpeuro frl1i round-nd )VDte to complete1gt irl8uLr ~uld in

Home spctm-~nJ 01 ( rolt1-cUJ CH8tI06Jlt-shaped bO(1e8 ~lre

eomrt01h lihe tltditeltJrjle bocliecl are gmrC1171 le1 than

O07rrm in Tnnvimum dimfmaioH tnt in 1gt292 trnpumiddotl arlJ sb~ed

fueal up to 1 rlm tn ovEJr811 Hidth iNerc ob~3elVEl~ One

ltleC~rnl

J JAJJ~J tT ((3) C)middotcgtCmiddotImiddotmiddotmiddotl_ ~ J -p (l-- 1vcJ~l

J11)~L_ ~ ~ r t It_middotl fcgt lmiddotL~- middot~--u bulli)rJ ~I~05( n~YI-

pnqofi iJ in ke o middotmiddotmiddot 1h tfP jCQ(rjmiddotl-middotogt lgt-middot -jY (~(l04) 00A-1- bull- _ I ~ l Ll bullbull 11_ j H-Jmiddot t ~ ~ t-t l 61 ) 1 middot~ A Li iJ -jy

the tn lrflfiedri te-chltLcOI)r1-j te mn~oTl~il on No e Ieve~l ThIs

apecLrnen comdsts a1Jrosi 3rrtJirelr ()f anintergrowth of tErtl~

132

het1~rtto Dlr~d ct r~l_ccIJrt~Ttfmiddot bull f3i2(lJJ~ aIl(1J11middotr~ Of p~~~~l(Jrgt Is

~l gt ~ (0 r 1 jIElsont ~~tC 1Urll~~ tlYld (lVi 1( ) n~ I) -1 J tJ L~~I bull 1 _I 11 1 c~ C)er~lr ) tn

tbe tie ra~jec1rl te n d ~rnces of fi no rovel1j te wre also

r)otc~ in the middottetr2~1e~rite

I3ctrnol1iteL (ommon tn noeL gnlNlp S ociri(rm but the

lls 1jri bllt1 0 ~J i El 1 (~pound~ C 11Oi fc 1~~ tJ1 11 tJ il~l t 0 t t e ~j x~~~~ -~ t)11~~ t e bull Tl1middote

to urn0111 Ge incluli on In the g~JJrn arc eOJrronly mucfl finer

1mn fJ1w totrJiledr1 t1 incluslonH j nthc same ~jecirnmi and

thc~ two rin(~rr)ls 10 ne often occur nn eornpoel te Inchudons

Tgtc inc1 1lSiotlD of liOiJrnoni t) JE J1ainly oUJd OY CVt e in

~iln)e(1 (01-f-JW 8 Jliro I ltgt11 luo -1-110Ie lt [~ize rnngenu~- tl ltt]1-01lll

~ from0 1 t 1~Jl A~-~)_lt

OO(~1rtr[ up ~t( C~tl12middotrt1 tlc ~1[1~lo1~it~y of t(~fje lJfJdies ~Lr(

Mt l~

~1 (~~3El iIlJ11 O02rnr In P 29 ~ounoniLe to rOflCl1 t TJel ~c has

Up to ~wvornl CVtjJitr1jres acrOfiS 3 nc1heGt al~e s ccrrtain

i ne11)sj on of cmiddot~ I YJn t wC1 10111 ltnce1i t i~ rp e la t t ()J P n5ralGo

1s lDrtJ cUlnrly COllrnOn inhelE bmlc110ni ce 11r0118 fl~3 fins-

r~((JIQlj~le t1rl~fJmiddotEilr~ V~middotjc11 O~Cf~f1jOl1811y fott sT1D~11 cl~1lmiddottera

3 ll1 nHrJ()W sC-n1S

eouI21teerJte Vltlr1es c)ni(~$r)Jl le eburjLmiddotnce bctNeen

S2E)c1mons t h(9i ne ((gtcyon j n f50PC SrU1111 cs (ego r 292) and inshy

gtlt1ft ~lr o~gtr~l~~ (r P 77)J JJ 1J J- l~ [1 ~ middotmiddot bull Tr~0 ~bCi)LEtl1~~(~J~L-~e OCC11~ as

ftr1e rocll-e Bnd r](~~r11e l=t~-ltmiddote IjO~liE~fl vl~l t~middotllrt tlrltt~ L~e~1erJf rtfjd

OCClfj onoJly forJJs compo j te t ncllls Cjn~J jVi t(tra11cdri to 0 r

bcrnord to Go

middotJ)rr~middot-i ~~ljI +0 C middotvi c r C)1~ pound~ t1 t)rbull rV tll 1 J

i) cmj t l~ l C n f ~) [1 (lmiddotmiddotlu ~ m r -1 11 r3 ) ~-~

lt middottmiddotgt C tID- I c to 377 ) 1 ~ t I~ ( t r ~ r) ~ lt n rj l fl 3 ((J J ~ bull Os~~ ~ ~ I It t I I l J ( ~- - et ~ 1 ~~ I I) ~ t1 1gt OIE

P292) In the 5Q~ples ef I Llf comiddot ((0 L1tirPJ t((1 t r 5 f) t1etln

11) noticeable thatfJyrrumiddotg~Trite is common Be inclusions in some

gr~timl of galena but absent in others In VtEW ofihe unishy

form tetrahedr1 tC content of the galena tt is llkely thtt

-the ObfiH)rved varintions in the silv~~r contont of Lhe ore

gtlore 1 rgely jUG -o var5ctions in the bundcmce of 1srarshy

g-yrite Ihc inelueiona of pyrrctrgyri te Sn the nlllenaare

rD~~1-nlJ ovate 1n shape but narrow CreEHeuroUlt-ahaIleltl bodies

were also observed T~le ovate bodies range froF O02mm up

to O1mm in length while th~ cr~Jcent-Sh[1ped bodics hlv~

n r1Ixi nmiddotmiddotjl 04 0 2fwmct h~ JiHh1b~ +~ f~ tJ J I ~ ltU~

Sphalerite is not ahUtldrcmt tnthcHe sJ~eeimens and

OCCUrS matnly Hl areas vhlch al1pear to have been axtensively

replaced by the m~~tssivc galena ffbGse inclusions v~try from

8 few microm3 tt)) to 11mn in width and minpte eXfiwlutiCll1

blabs of lhlcopyrite can be observei1 WJt)l~lfJ i~he phni crite

These blel)f] frequently exhJhi t el5gnment in crystallogrEtphic

ctmiddotr~ 4 n middott~lmiddot-l~ __4di-1 e1uuS J e ep lL1d poundbe One npec1men (P t95) C onrdstshy

illg Imrgely of stderite gJngue ~ontajns an 11rea of

13ihc]eri ta rnea1xting 2cm x 1crn

middotPyri te occurs 1n most fJpBCimens as clufrters of fine

middotd1om~ JlfIVtmiddotmiddot~hmiddot-fLJ v c rJH~middotlomiddot1jl110 (0 middot01middot~~ to 0 OJmiddotmiddotnf)bull tI tlo F__ ~t~_l~- ~~jotd tJ J- imiddott ~1 gn1(-t CliriL

t~HtJe cryiotalf having ~tPFarently been extensively replaced

by th(~ f5f11em~ Ocea~donnl al1otriomorhtc aye~ of pyrite

up to several ilillttetres in Width al~euro plefHmt in the

gnlenf1 (egP 378) The pyrite intheEie 9Jeas appearil to

have unc)(TGone frrleturing ane many of the frrmiddotlctureo are

uJ) (3 by go 11 middot)middot1 ~~ VlQmiddotmiddottrogthemiddotdimiddotImiddotA(t ~ middotemiddotcmiddotitmiddot14- (P 1)04)-~1~ JIlltOl )tt~gtC~ (Zl tmiddott jmiddotUmiddot 0n ll)ftmiddotmiddotrmiddot tJ

-------------------------

13middot bull

fonDll~lls 1t1most ()ntIrcl~l 01 m-SDtve psrite with only very

~+ l1 PeOl4_r f JA~ry middot~trhp(Sytr 11r-gt]CG ymiddotmiddoti4-~ PVilJUCJ 111- iI VI--o CJ(-- fC~ ~llt~ t~ )gt$ J_~ Uo ~ ~ bull t~middotmiddotti - Jt ~lt _t

splifilerjte OC(1)lyl nr~ frc-ntuccn nrHl iderGIfHI1JlPcr SIJacem in

l~ ~~) 1-( ICCC~1jmiddot ~ ~i -t ntrgtr1 1) middot-middotIJ1 (1deg23)~Jrf~_ l~~~r ~ _ J~ lt iI _~ l~ t)il- U l_t-~ Vr ) ~middotmiddotr h- t gtt l

th18 sHnlple VOi1JJl be rncn-c 1yptCf1 l of oro from 1hlt5 lower

levels of the nine

Hnre 1801~1t()t1 ot~i(-3tn18 of arSfdlOprrite w~rc notml in

th~ol o (1 ]80) T11lt1 0 rltmiddot middotmiddotmiddot1 emiddot~middotb t1 ~11iOlOfnhi t ~ (~~r- bull bull ~ bull 1 t7 tsect - J J i tJ~ iJ L ti _ u u )

rhnrnh shape chnr1cterl_sttc of frnenoprttet and textural

r81ntlcmshj~f) 5nl1cft1e 1119t (1)(16 IJ~w been extorHrlV(dy re-

p~lncel byth( inlcrw

135shy

luilaeIDbl~l~iS of ore minerals bull I It I

Corrmon G~lena - tatrahedrite Bcwrn 01te - galena 130ulangcri te - galenampl Galena - pyrite Pyrtte - sphalerite

Infrequent Boulongerite - bournonite Boulangertte - bOllrnonlte - gnle1laBoulangerite - bournonite - galtu1a shy

tetrahedri middotte BoulangsIi te - bournonite - tetrahedrl te HODJangeri te - gelena -sphalerlte Boulansseri te - galena - tetrnhedri te r~ot1tnoniie - galena - middot~emiddottrnhedri te Chalcopyr1te - galena - ~etr~lhedr1te

Ohtlcopyr1te pyri-te Chrtlcop~rite - p~trt te - tetrahedri te Cha1ooJiYT1te - sphaleri Ie Chnleopyrl te - tetrahelt1rl~e

Galena -pyrr1rwri te Galena - pyrtmiddotte- sphnlerit eurol Gfllena - pyrlto - tetrahedrilis Galenn - sphalarite - totrnh(r1rite Pyri 10- sphalerite Pyd-tie - 1etrahetlrite

R~lre Arsenopjri te- gal(H1~

00ve11ite - tetraho(lri te

136

Zeehan-l1l1ontarm h-1ine 1 t i

The iOrkings of the Zeehan Montana Nrine are located

to thesouth-eaat of theZeehan - Vantern rline The main

shaft (Montana No 1) ia si tuatecl a few yards west of the

COrinllB ltoad abou1i~liJile north-north-wcst from the junction

with the Trial Harour road The No 2 shaft (oriillal1y

the S1_1ver luaenIto 1 ahaft) is located appIoRtmately 200

yarcls north-ea~lt of the rofi1d junctlon and oth(~r ammller

workin)~B are loc3ted on middotthe lower western slopes of Montana

Hil1east of tlH Cor1nna road

Blisaett (1962) hiM deseribed tJle hostrocltS in the No1

work1rlgs as n~rrt0ns(ly folded and fhattered nlterneting tlerk

slate silistjone and palegrey quar1zite wlih intarh(j(l(leHl

flows of spill tic 1~1vn helieved to gt0 the lrJper i art of the

Oonah uirlzi te and Sl8te 1t BlisfJett also relOrtedthat Uto

thE aolllb - cast they (the slateo and (]llt1rtizi tea) are overla1n

by deBply wef1thered IJurpllah anc1 gr(~y Ghole 3ilCs (one Ifuld

greywacke aiJfdned to the Crimson Creelt FOrmation- tmd

tllat the No 2 workings are flztlmoflt entdrllJt withIn the

latter sequence

Deacr1rrfions ofthB wO]killi~G were given by rliJelve~rees

(1 Oh) Wal1er (1904) alld Twelvetresctnd ~ard (1910)

lho mo~rl extenoiveuro) workirv)3 ~l1exo~he No 1 work ngs Th5a

oT~1middot1tc( t Vtl~lmiddott~fl~A I ~ In r) dt+i cf tidmiddot ~middot~tAc ~ rJr11t 1V1egt lIiJ a-_~ C ~~ tbull J U t30 ft I lt 10 IfIt64 iiii

chllvelopeCl the deepe~~ltt being No 8 at HcO feet A total of

ni10 lodsH were rnported int110 No- 1 wOIk1nge These have

137 been desCJibEV] (al1el 1904) aD fiB9ure l)or1iea ltnd ttpparshy

ently COflSlf3ted essEmtially of golena in sid0ri tie gt1ngue

AccoI1ing to Twelvetrees and Ward (1910)the silver content

oflhE ore d1d not vary wit1l depthone1 the highest slIver

oorrt-ant reportemiddotl 10 ore from the no 1 workings WDS 115013

per ton for ore cerlying 671( lead rrhi3 WEta an [sellY of a

ptclted sarn)le from No 2 Lode on No 3 (295ft ) lJeve1

ehe No 2 wodUngo extended to a dJipmiddotth of 500 feet and

two lodes were wrked from ~~ totfil of five levols 1Ihe ore

intho No 2 workings was more p~rri tic cnd VnRf l~ol)Ortcd to

b(~ lOlller in silver con tent

PClliDhed sect1ona fJErre preprmiddotmiddotrred frlnn epEclmens obtairHKl

pound 0middot1- 1 rlr ~ m~rPrimiddotniA-Lltt-3Mmiddotlt_~ - ClIoLJ JPl f1U~~~1 o11(~iotJ - Lamiddot ~~bullJ -r~ )rC 111 bull tl~J J i ~ _ bull t Jhi ~~1llP~ j j n1Cl t ql 011

aeted from the dumps in tho vlcini ty omiddotf tlJe ebnndoned workings

r1~110 rnain C1nfl titut~nts CIf ~1HH30 8pe~immg are galena

p(ri te aUil I3phnlerit~e in a gtlnguo of lur-rtz and siot]-UEh

Minor (llTIount of b011htlierite r0urnordle ietrahedri tmiddote cxlxl

chal(~opyri1e were obHerv(d in polirihed lJltFlctiomh PI vmbogumshy

ralmiddotta andpyromorp~dtD are flfhlOctnted wi th galfmo in one

specimen (X2GB3) and Pettrrd (1910) re(~Ordfld mntloc 1d1e

an flmall qUHxtitios 1a~H)O(~iate(1 1(1i galenl

Severnl ()fl~he npEH1imene cOrJs1st ea~Htlt1(llly of F1essive

1 l - v-0-1 -H UlJous- T JO1a10l re tbull +uC 1 - ~ 0-tcnit v JflrI 0 ] dO)1tltd1tO ch middottmiddot

rdedri ta BO11rHl~erj_Le is tho mOfft aburrhwt fgtf lH~Je three

ndnerLlln and OCC1HS as djHIe1TIinmiddotted j5Le noJcrile-liko cryrtnls

r8n~ing in length from O002mm ijQ C025mm 1gt0 hcntlt111ter1 te

Is oce1u~ional1y conlt1el-rtrnted 1nto n6~rrow figJ18 and veJns

138

and smHll irJspoundfularlv shaped aret)S U1) to knJlTI in overt11l

wtdth

BOUTnoni to is common in flOrae ga1ena specimens (eg P 107

108) but leS(l common in others (eg P 109) The inelusions

of l)Ourntlni~te in galena are gonertl11y rotuHl or ovate and

varj(~ from OOOmm lw O O3mrn Co])poai te houlnngerl te-bournshy

onite inclu~iollS are also eorJl11l0n anlt small irregulnrly

f3haped inclufdofls o1~ bouInonite up to O075mm bull in wHlth

occur Nithin the boulafiserite areas One Dn11 area in

P107 conlJi~JtJJ of a fine intergrowth of bournonlt~1 and chal shyr

00l)yri1e 111111 suboldil1ote boulnneri to ~s area measures

approxirnltltely 15mm x 1mm

Tetrahedrite ia rar or absent ifl nome gctetlaapecimens

(eg P107) but if) common in other~1t ]A11ticulJrlyP109

Irll r 4lt---rrgtAt lmiddot I C middotoOt f n tllt---J t7llImiddotA aCegt 1rr f~1 rmiddotl~ c311~Jn 1L ~t Ufc- I) c ~UJ Jfjli 14 Lt J ~to it-t -~li~~~ c -ft) Vr)l-A __ CI lj 1 - ~J v

bmHes rang1ng in ~~dse from O005mm up to O05mm 801ln of

these bodieH are loeBmiddotted around the margil1EJ of sphcderilg

inellmiorlLl In 1he galena

ltrl 1lYt1_ rt~ to (HHTtrtr~~~ U1rie~ l bull11- J lietwoll v~~0 -1 or d~r~rlbl shy ~JQ t

specImens In P107-109 aphaleri te iD present only ag ~1ll1llJl

areHJ g~meral1y less than 1rmn in oVG~rrJll width in the

massive galena P286 consBts of splmlerite and galena1n

approXimately e ual proportions Hnd P287 cOt1Bifrk tlrgely

of fJp1vt]eEite wjtJ- mlhordinde li~rite fHId galenn Gctlena

gppezc1lS to havr~extenntvely replaced the Gphalerle fHld in

n 1~6 t l WO mmiddotj ~Igtmiddotmiddotl ~llgt int- Flntmiddotolu ~ rmiddotoil -tmiddotn t poundi ~Ijb oS ~ iJt t~ clLQ atl-t --IJ Ct-)OTi~ ~bomiddot L ~

flrephlcern~mt 1trt~~rGrowthntexture Chllcopyri t(1 hlebo are

r O middot in 111 1ll n lri in +~lel rJ Amiddotmiddot Imiddot~ gtJJQ W I C ~tJ tjl ~ J~ ~~r 9Jtj iJI1C~LlUtJfi(Imiddot

Pyrite aloo var1Bs con~1idcrtJbly in ltihilndance bemiddottween

f1peCirW9Tkti Somepecimens (e) T)290291) nonsist mainly

ofpyri te and U101rtz Int the sIJeeimens of xnastilivG galena

( iJ~r7Y~S t) ~rtgt otllmiddotn tJl middotr ~ jYtX 4~ aQ IJ ~ oi--v~Jomiddotmiddotmiddotona)bull31c 1_ jlv (o middot011lt171CO) middotL 1tmiddot ol~y middot1middot Iol)h

loO075mm) ldiom()1phie crystals which aj)per11 to have been

e-xtenErively replnced by t116 gulena The massive al1otrioshy

morp1ic pyrjte 11)pecirnenf3apPGHT to havo undergone extennive

f1cturing withiwrneof the fractures now ocltnlpien by

ll~middot I 1bull + ( Y) 1 q 1 ) ijrL C l 01 f)1 amp Lt v l ~~~ J e ~ A ltttl~ cllnlcopfltte is plso

present in the intoIIeurowular areDS in the mnBsive P1ri1e

$(JIM~ of Lhe ae ptttches of chalcopyrtte reachi flt5 o 5lZIP Tn

overall v)irlth~ and the pyrite DTpeaIfii to have unr1ergone parshy

tial replacement

Plumhogummite is _tYresen~ as an 98rthy whi tmiddote coating on

8IH)cinlf~n X2083 When BRctmined closely t 1r1n sIiecimen can

k 0jl-J ~~J P-middotlmiddott o-~- 11gt1 0gt l~J L h~ 1~lt beytgt~ l ~J~-_ 0(1Jmiddotmiddotrmiddoti11 7 1-shyt)~ + OJ)4~ J 3_ middot~~f-tcr 101fJ I~ ~

ized to red-brcn~ngyrornorp1itewhich has in turn undergone

a1terntlon to plumbosumrni te Thig feitlJxe was alGo noted by

Baker (~963) virw hu7l reported on the fvune Diecimen

140

aa~Il lt1gttl~ ~amp u - ~ttil L4 O si omiddotrgtJ IUI~

( f) mi~()nl ( ~_ J ~~0Ii ~

GOl11fon ]3oulaneerite - g31ena Galol1B - 1pound1Dhalerite Bonrnon1te~ - galfmu Gmiddotlenu - tetr~lhedr1 te Iyr~jte - sphJlerite Cblenl3 - pyrite - sphalarlteBoulangerite - bournonite - gnlenn Ci$lcoprrite- pyrite

Infroq~0nl Boulangerite - bournonite 11oulangeri to - bOt(ruontte - cllalcopyrita Boulangerite - pyrite B0l1rnQn1te - grdona - sphaJerite Galena - pyrite Galena - 811hBlerite - tetTE1hedrtte

Rflre ChBlcop~rrtte - slJhaleri middotte

141

Montana Silver-Lend Mine nt ~

Thf workings of the ~kmtena Sjlver-Le~)d l11ine ahHndonod

sinoe 195f) are si iuatod a short distance west of the Cor-inn)

road 2 miles i1ireet line north-northvaat froffl thejurJotion

of the Corirma and T~tll Harbour ronds This mine marks the

northern extrerftity of t110 Zeehan mineral field Iho origtnal

workings at thi~J 10ca11ty were known as middotthe May fueen workshy

iugs and later bccrrme known as the Montananestern Extended

The le1uH~ was taken up by the Nlontona Stlver-LeBJl CQ NL~

in 1939

131108ett (1962) has given the follow~iIt1P dfHJcrip-tion of

the gc~neral goologV ofthe area

l~he couritry rocks are a r1Ollotonous series of nltf~rn1shyting pale gray sacchgoidal quGmiddotrtzito sil-stone andgrean graYlIlc1 bIttek shale or slete which fonn partof tif1(3 Oonah QunriHite fUJd Slate -- The bedn were tightly foloed and faltl ttjd (luring the ])evonian Tabh1abberan Oro(eny The folds strike north-west with reversals of plunge produced by cross foldtng Fault and shear zones vrovided zones of weakness trtHldtng 1Cirth-11()rth-wes1 or north-north-enst along whtch minelfGltmt iiAHi toolio ace later in tho Devunian After lonamp peneplFm~jont PermiantJl1ite WiJS derosi tea aeroBs the eroded Prottrozo1e rocks and iur~lng intense f~tulting probably in lerttary times Poterozoic quartzite and 91H-to were thrust over Ute Pt1lmian glacial formation fl

fhe mine worktngs have been descrihod 1n repGrtn by

Blake (1936 1938 1939) and faylgtr Alnd Thucer (1951b 1952

1953) The m81n VorJdn5~8 consist of the flAdit Level u fUlti

levels at 100 feet 150ft 200ft and 270ft bullbull with a

smallex jn1iermedtnie level above the 100ft~ level

J311~kemiddot (1936) rc~ported the ~presence omiddot~gt t11x parallel laden

Qt tho ~1urfaoe but Cl~lrle t s Lode (l1JiIain Ilode n of Taylor and

142

Burger 1951b) was the only lode worked underground Accordshy

ing to raylor and BurgGT (1951b) the lodes are irregular

fissure veins with a maximum width of about eight feet From

descriYtions in the ahove reports in particular that of

Taylor and Burger (1951b) it is apparent that the ore conshy

sisted of galena with minor amounts of sphalerite pyrite

and chalcopyrlte in a gnngue of quartz Gmd Biderite and a

11tmiddottle ca-lei tee Blake (1936) reported some tetrahedrite

aSElociated with galena and Taylor and Burger (1951b) cledm

to have identified blJrni te in one specimen In visw of the

COnll)lete abrHmce of bornite in any of the p~)lished sections

of the Zeehan ores and in view of the absence of any other

record of bornite in the area this hand specimen identifieshy

ation is regarded as doubtful

ihe following assays of twelve representattva erpecimens

of ore from the mine were reported by TayloT and Burger( 1951b)

Pb Ag(ozston) Zn -1 484 87 91 2 37 41 42 3middot 250 258 146 4 17 7 381 8 3 5 274 110 03 6 09 19 02 7 376 195 34 8 475 411 09 9 624 862 53 10 240 15middot3 1 4 11 65 4 1112 35 12 604 665 18

BIiJ ~ bullbullbull r

143shy

A further series of seven Chi3fifH31 samples collected by

Taylor and Burger from middotthe adi t worIdnga grllve vDlues ranging

from 05 to 1B~Pb 06 to 162 ozs Ag per ton and O4)~ to

22Zn Assays on eight samples collected by Taylor and

Burger fmiddotrom ore lenses on1he 150ft level gave values from

~ to 24)tPb 16c~s middotto 3430zsAg per ton ltlnd 1 3 to 5~Zn

Apart from one specimen of high grade lead ore (P251)

obtained from the Department of llJIines the only Inaterial

available for study cOiAsisted of specimens collaetea from

the dumps ~rhese specimens consiat of galena sphaleri te and

pyrite in a gangue of quartz andsid~~ritee Minor tetrahedshy

ri te chalcopyr1te and bOUTllOni te were also note( in polished

secmiddotttans No high grade speeil)l(~ns of ore were obiidr16(1 from

th~~ durnps all specimens contatn e high proportion of the

non-met)llic gangue aSEJOciated with the ore minerals

In most of the fJpecimens gdena in the major metallie

cons tii tu(~nt but aphaleri te and pyrite are often intimately

assoeiaten with the galena Sphalerite has epparently been

extensively replaced by galena and highly corroded remnants

r4nging fn size from a few microns up to 2cm arE found withshy

in the rlreltlS of galena

Pyrite ls commonly present as fjne (O02mm to O1mm)

idiomorphic cryst11a dis3eminatedthrough ihe galena and

sphalerite and showjng apilrent pertial replacement by both

minerals Pyrita also OCCUlS as patches of BubidioUorpio

material up to ~cm in Width god many of these 8ri1fiS contain

fine veins an(l jrregularly shaped inelusi orm of gOlena

__-- _-- ------ _-__-----~--

144

TelrthedrtteJ is common as srno11 incl1Jstonsof lrregtllrlr

Slir~)e vdthin the ~al(me~ In most frperir~icns ~eVtl rdzG of l~he

te-t)~phl1drite bodies rtmges frorn 003mm up to O 12mrn ()eeshy

8Hlollal Inrger areas o[tetrahedrlto up to 1mlfl in l)vgrall

W1~-l~j tt-tigt O))-~~t (tD 14204) ~ l -t 1~Hn ~ft i-hoshylmiddotY t vJ middotfmiddot~ ~ 1V k Qvd tf ~i- bull 1 t -kl(ltbull tt lItlV~~ If~~~middot~Qtgt(-J J~-~

tetrnllaitrjte in aBtlOciated wJ 13 galcna in f texture which

bull ~ro 1 lt~ 1 i imiddot 4o ~middoto tt ( 01 + (1 nO 1 ) tt-e euroheal t~pLC nelt VIIbull lt a e 1 n A littile

crullcopyri te is rJssoetated wt t11 the tetraledrt1e In P251

ehalcopyrite forms Jeaani onal irregtllarly ah~~pet1 (reas up

to severel mil1iru~~trel~ in wilth and Itmeth w[ thin the

rn sslve gn1Ema a131 ~Getrahedri to occurs tW slnoll 1nclusions

within thH chnJcopyri to

Fine eXl301ution hleb omiddot chalcopYImiddottte are COID_lrlOn 111

much of the sphiileri ta ~rea0 bod tee r~Ulle in size froEr) leas

than O001mm up to O 005mm Dn(]many sl1oVl alilrnment f110ng

crjstallographic d Lroet1nns in the c1JhaJeritti) Sorne poorly

o11 ilecJ r~middotmiddotomiddottmiddot1ltl7oimiddot w~~s omiddottico ~middot~1 r +ho c - middot 1+middotl (1) 110)ll fL t 1 -~_ IJ( ~ 011I bull 1 11 U u - _II)o~J v ~l J -( Umiddotmiddotmiddot1 tmiddot (l-middott- middotvJ ~ Ul t t

and middotthis 18 partially def1n6tl by parol1el lineo of ehnlcoshy

1ri 1-lbsv Il o)~ middotm~J~~-1 b1-J L-~-t) comiddotl I~tr b U Cl A little1 lr ~-~~j - ql(~_ middoteoltmiddotmiddotLtl (i- bull middotI4O- ~ It$ J1

chrl1copfr1te also occurs in narrow vEdn1ets vd thLn the rjphalshy

er1te llmiddotH~se veinlats raupe from ObullOO2rnJn Ul) middotto O005rran in

YJj(J1h and are asslU1led to be segregation veinlet~l w~dCh have

exsolve(3 ftom the IlpllJed tCl host

Bournoni te 111 common 88 in~]Lllll om) in t1C (011ena in the

mmslJve ore ft111Ccirren (P2~)1) bat Ias not observed tn other

specimens III P251 the hournollJte inclusions are mainly

h-j~ ~ ogtip J - d 0 n 01laquo tc 0 (l3emiddotmiddot~pmiddot 1ltmiddot OC~~H~-f onltrgt1h J j~ bull ~- l~~ 1 i(J I_~ J l V~ 1 lt 1 ~~ bullbull jI1j bull i t)~~ ~i(t_t (J

145

larger hodies up to O8mm were observed 1h0 finer bodies

are generally round in shape but as the sJze of the bournonshy

imiddotte bodies increases the shape becomes less regular

l1ssemblaBes o ore minernls

Common Galena - sphalerite Gelena - pyrite

Galena - tetr~)fhedri te Chalcopyrtte - sphalerite

Infrequent Bournonite - gHlena Chalcopyrita - galenaChaleopyrite - galena - tetrnhedrite Chalcopyrite - pyrite Chalcopyrite - pyri te - tetra-heel te Chalcopvri te- tetrahedritemiddot Galena - pyrlte - aphalerlle Galena - pyri te - tetrahedrtte G~llena - sphfl1eri te - tetrahedri te

Pyrjte - sphalerite PJrrita~ - tetrahed ri te

Sphnlerite - tetrahedrite

146 ~flasmanian Crown Mine ~ _middot ~l iIl

Jhe Irasmaniall Crown Silver Mirdng Co IJtfl held leases

covering theeasmiddottelll slopes of Ikmtnnaall 1jothe erllrt of

bull1( 1- _it-nmiddot~o Q bullbull a1middotSv Vrtmiddot t1- fl tt he ltuel~-hh~J 1lna nilJ-i JlCl bull ACJVecJIb bull Y 0 i Oh L 1 ft

to tho east of Morrttl1l71 Hill

i31tssett (1962) has igtven -the fo11mving deacriptton

of 1110 gr3010gy oflihe aref concerned

Higlly fol~lec1 Hnd distnrbed nlate ~dltatQne flJiQ qu~rt- bull (-Jol lt] 9gt t - ~ ltl+c) fr 1 N deg0- - l ~middotr11 shyft1 gt ltbull 1 1 1 6 1- ) lt0 u ) 111 L bullJ tt amiddot~La fnul ted -to middotthe east against OrdovieiEul GordonLirnostonemiddot As in the ret31 of the Zeohon diltrI et tiW aeconpos0c1 limestone htl-l3 g1van r1fleto a SWfsunpy htrttongraaa flat across which MHin ere-ok fl~)wH It

Je main SllDft _ llt~eotec1 tn (hc valley of i1ntn Creek t

Ift~middot-111 10 (~(middotj-middotmiddotmiddotIL ~t11 0~~1 J ~lt 11-n 1 w 1 ltItI 1(tf+vt lJ ~Vl Jlf~-j~gtlltOmiddot t~ (J1 l r )((Hto 0 _~~ 1middotv~lmiddot C bull _ rt

gt t 040 4~3 1(t t170ft hion poomerv ~ bull dYj C-J~)) rCTJorto( l(j preSCl1ce~~ ~~ ~

(gtf several lo(les inthll area PherJc 1iH~e dJ~ eri tmiddote lodes

Vii t11 ~~~alena ant1 fa lt1 elt te t 1rtt ~ f1( L)J-e Vl0J3 n~PJ)tlrmiddote fl ttly

1fl~J~11erj middot~xrtchy

it Yll t gt~Fl e~~r (of p~ Cl) ~ --1 ~ 8 middotc 01 omiddotfIt vre) rGCtorde(l j~I A ~tI -4f) t middotJ1_) ~~ 11 -~ ~ ~~ 1 __ ~t dyen

4 fr t tJI1S of ore f1middotO(j t1i( ~ CtSlrJ811 i gn (~r()VJt1 r1-i 11 e lfllt1 on conshy

~ tmiddot t-middot r~ v It 1 1 l ltgt 9middot~rt l1 1gt laquo~bullbullbull ~ ~ 71 5~ -ol1 tbull~ t~t J J _ fbull (middot t t)Iol middot i - ~ tJ~middotlttn-lt (~~~1iC~ J 1i lf bull 1

]Cltld nrc1 9)~)-C )1middot- C9middot-r n middotjlV] ~)r ton A no 1 0 roAmiddotmiddot- r~ ~_)J 1 )1Lo- -bull-~ rdl~ -L 1 l~-- ~ bull

]ercel of 10 tons of ore yielded 1 ~cwt of (~cneCntr-ate

2l$ BKitY1 n rr 7r ~ It~ad nm~ 52ozs l1dtvt 2Cgr~ 0middot ~Jllver per ton

N1i)titmiddot(fI middot1l (1 rO(~

- ~ I

~ J~l J -~J J bullbullc J J lls) t~euroTCl~t1 ~rltt r~bCl)t stx t()11S ofoIL

gllenn1 88saylne 114oz~~ of sDyeI per ten were producerl

frnm ~ HFia11 f3heft on Lontana BlIT neE tlv~ fwu~ljern bn(1nd~uy

--h~

~J ~ ordI loiwe

fI)tmiddot t ~ rel (1 q 1n bull- UJlO~~ - roeoX(lod small amounts of meJalltex1te

~--- ---_--shy

147

and voltzimiddotte in the workings of the Silver (Ifasmanian)

CrOmiddot~m Mine

Very few speeimens of ore eoulil b(~ obtttined from the

dumlts near the workings tlnd only two rpecimens were avail shy

able in the Tasmantan Museurl collection The m~Jin minerals

represented in these specimens are galena sphale1i te and

pyrite 1n a fJider1te gang1le Small amounts of boulangeritet

tetrahedri te ~md chalcopyrite were observed in polished

sections

GalenH is the major eonsti tuenmiddott of P384 and 385 and

oocurs in approxirlh~tely aqua1 proportions wi thsphaleri to

in P 186 lzmd 262 Bmtl(mgerite tna tetrahedriteare common I

in P384 as fine inclludons wi thtnthe galena b1)t were not

observed in otller s[iicimens The galena in P385 contains

no Esfjociated ore minareTs the only other mjnernl present

betng g small amount of flideri te The boulnngl3ri teinelusions

in the g~len~t in P384 are Farticularly abund~~l1t The moat

common shares of these bodies are round (O005mm -to OO]mm

in ltlirunetor) and needle-like (OOOmm to O05mm in leng-th) t

but occasional irretularls shaped bodies VTgt to O1mm in

wldth werelso noted Many of tbe neEHilelike bodies shO

~lit~nment along crystallogrcphic planes in the glJlena

Tet1lflhedri te inclusions in 1384 are IStlS abundant than

the boulangerlte bodies and are more ~poradiomtl1y distrtbuted

The sh1lpea of the tetra-hedri te bodies are generally irregulilT

rlod the l3ize rnnge observed was O02mm to O05mm Occasional

composite boulangerite-tetrahedrite bodies are present

-------------------------------

148

Sphalarite is rnre in the massi VG galena but is common

in 1)1B6 and 26 and has api=8rently been extenslvely reshy

placed by the galent~ Ch~llcoprrite 1s present as l1linute

(O0005mm to O005rmn) lilebs in thesphalerite

Pyrite is not abundant in moat 8~pecimensana oocurs as

small idiomorphie orYBtall1~ distributed through the gCtlen8

and sph~lerite One opecirnetl collected (P307) eonsirrts

entirely of al1otriornoIphic grnnularpyrite nd interstitlal

quartz

Assemblages of ore miner~~

Common GElena - apha-leri te Galena - pyrite Pyrl te - fjphaleri te

_ BGltlttngeri-te - gcllena

Infra- uent Boulangerite - galena - tetrahedrite Chaloopyr1te - sphaleri te GalEHlI31 - sph~tlerite - temiddottrahedrj te Galena - tetrahedrite

149

12espatcl ~il1s

The main shaft of the Deapatch Mine is located on the

limestone ilat to the south-east of Montana Hill Ilml is

approximately 600 YHr~s north-north-west of the Zeehan post

office

rho hoat rock la the Ordov1cian Gorden Limestone

Very fewspecime1ls of ore Hremiddotavail8ble from this mine

anti in the ab~3enee of earlIer descr1pttons ofthe content of

the ore it is not possible to judge -to what extent these

sp~~cimens are representattve samples Montgomery (Hl93)

recorded galena but made no further comment on thE~ compost tion

of the ore No production was recorded fromthls mine

The speeimens collected consist alrnost entirely of

galena pyrite andsi)halerite with only minor amounts of

ehftlcopyribe bonlangerite araenopyrite lllarcesite and pyrshy

rhotl te with a 9i(1(~rite gnngue

rrhe rel1~t1ve proportions of the three major components

VQXY eoniderably between specimens P308 and 309 consist

largely of galena and pyrite whereas P310 is essentially

a specimen of YlIiuHlive ap~middotil1tlerite

Pyrite is present 1n both gn lena and ~lphHlerite as

idiOJlorpht(~ crystals showing a considerable varition in

ales (O01mm to 5mm) Textures suggest that the cry-at-Is

have been exten8ively replaced by galena and parti 11y reshy

piLaned by sph~11erlte A little arsenoprite aDd mareaaite

occur in association with the pyrite thtl fOIrner as small

(O05mm) idiomorphic rhombs Pyrite is also present in the

150

sphalerite (P310) as clvsters and veinlets of fine crystals

rh(t fdzc~ of the intltviI1tual crystls in thiL fOrti) 111 genershy

RIly bEtmiddottween O01rmn and O02mm Th5n form of p~ritC has

been obnlJrv-ed in i3phrlleri t~e in oth8l mines ln t11~ i1lGtxict

j flI (( vlt J iU (~lJiJ cmiddotmiddottlmiddotl1elNgttl 1I ryJ 1~~)oJ ~tmiddotte) shy[J 0 Jimiddot u U

( C I ~1 f m t 11 l t middotmiddot M1 11 Cgt ( omiddot + gt -i n Ft J r~11 1 Vir J 11 iongtI (lt V ~lt t~ A bullt v ) ~ 7)_ J- ifJ 1 L t~ _ LJ iJ lAi- 3 J v~1 L~ i3 0 t-

KAndif tbese cpecimens rJre typical 01 ~rc fTom thCJ mine

then tl(~ ore Vi f) low in fJtlveT content Ro~larlerlte 16

Lbulles1 lt0 0 0middot cmiddotmiddotc 1 f~l b l~fmiddotl )lJij~J1~ 10 omiddot)cmiddot (3-1I middotmiddotas )nI 10 _ctCi-IL1~lec 111 t )w

1middot I (P 3(9 ) ilt hmiddotl ~ 0 gt~ h ~ 1+0 Ir~middotc ItJU enp l d lroelrJH bulln bull Ot1X110L bulllc rH

observed

r~H3 tJphaleri tie iomoderately dark in hanltl o~ecimen and

l r 1middot 1 bulljmiddot 0 ctmiddot y~-i omiddotmiddotmiddotwrmiddot1 w r e ~ gt0 rr c -i middotmiddotmiddot1 0middot 7 ltI h~ ns iHbull middot lJ J to curm I k1CE pS I- t

cl f 4 C l h- (0 Omiddot()1t middotto 0 01l1C 0 j Jj dJ f1S Ai EUI Od th l EhJll bullbull g bull cd)

small nlo1feten i i curved bodioB ITlCCl1lri tH~ up to OO~)lmiddotln X

O02mm The Int-tor bodies tEEd to oceilI jn clustero in

reas free of the fine blefm 1Ylrhoi to is prampseuromt as r~tre

O~+o ~ )l bleb (0 017r 0 OmiddotOc ~l ) in +~1 )-fl-] t Vltil IiJ ~ -_boJlW4 _ +lt) ~~Lt A 11-Ul U ~ Wl-middotad~ln ---e

Pl~ V Cmiddot~1 rmiddotmiddot - romiddotJIrot ~ v11~rl1middot ~1 (I) (1 lmpo ill ~middotmiddotl-rr~~) -l 1middotl~emiddotmiddot ~il t J c~r~ t Lampl J~H_ gtj~ JtlO r~~J 1 ilbullbullLmiddot-~ v~l Lt_~ Jfampmiddot

gf~l(~na (p3(8)

151

ArH30tti1lftea ()f opounde rdncrals bull bull u T1 bullbull b

COnlIXIOn Glona - pyrite1 middot1 - middot~lmiddotmiddoth~l rimiddott1Jf kmiddot ~ ~lJ

Pylmiddotjte - tl h~ler1 to C1p ~ middotmiddotgttmiddott _ ifhq ] t~il

f SvA~It-pound~ ~lIQ li~1 ~_ ~vt-gtlL It

nftmiddots luant ~irl~HnWIwri te - g~1etla

ttraenopyrj te - gllt~na - pjri te uouln~~4-1middott -lA na 1 ~-ti1L~~~j jJtJj ~ltitmiddot C (it

G~11en=J - mareasl to - pyri te ) l n~ _ 1middot7rmiddot1middottmiddotmiddot )114 t J~ JIXJ ~t fl ~ - ~) t LL ~-Lmiddotmiddot J C

fql 1~ _ lrl-1r-middott~middotrt~ua ~j vli ~ It A~- -lIV yt t~

PjtIIhotlte - fJph~~lerite

Page 18: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 19: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 20: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 21: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 22: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 23: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 24: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 25: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 26: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 27: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 28: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 29: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 30: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 31: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 32: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 33: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 34: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 35: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 36: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 37: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 38: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 39: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 40: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 41: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 42: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 43: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 44: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 45: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 46: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 47: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 48: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 49: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 50: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 51: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 52: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 53: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 54: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 55: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 56: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 57: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 58: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 59: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 60: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 61: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 62: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 63: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 64: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 65: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 66: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 67: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 68: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 69: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 70: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 71: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 72: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 73: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 74: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 75: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 76: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n
Page 77: Mine • Nubeena - University of Tasmania · 2014. 11. 18. · 76. p.resent . vd . thin -these 'bournoni to areas. rratraheclrite . Hlso occurs as . occaelon~tl. lnel'Jsjons with-i.n

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