THESE TERMS GOVERN YOUR USE OF THIS DOCUMENT Your use of this Ontario Geological Survey document (the “Content”) is governed by the terms set out on this page (“Terms of Use”). By downloading this Content, you (the “User”) have accepted, and have agreed to be bound by, the Terms of Use. Content: This Content is offered by the Province of Ontario’s Ministry of Northern Development and Mines (MNDM) as a public service, on an “as-is” basis. Recommendations and statements of opinion expressed in the Content are those of the author or authors and are not to be construed as statement of government policy. You are solely responsible for your use of the Content. You should not rely on the Content for legal advice nor as authoritative in your particular circumstances. Users should verify the accuracy and applicability of any Content before acting on it. MNDM does not guarantee, or make any warranty express or implied, that the Content is current, accurate, complete or reliable. MNDM is not responsible for any damage however caused, which results, directly or indirectly, from your use of the Content. MNDM assumes no legal liability or responsibility for the Content whatsoever. Links to Other Web Sites: This Content may contain links, to Web sites that are not operated by MNDM. Linked Web sites may not be available in French. MNDM neither endorses nor assumes any responsibility for the safety, accuracy or availability of linked Web sites or the information contained on them. The linked Web sites, their operation and content are the responsibility of the person or entity for which they were created or maintained (the “Owner”). Both your use of a linked Web site, and your right to use or reproduce information or materials from a linked Web site, are subject to the terms of use governing that particular Web site. Any comments or inquiries regarding a linked Web site must be directed to its Owner. Copyright: Canadian and international intellectual property laws protect the Content. Unless otherwise indicated, copyright is held by the Queen’s Printer for Ontario. It is recommended that reference to the Content be made in the following form: MacDonald, P.J., Bisaillon, J.M. and Gemmell, T.P. 2018. Precambrian geology of the Osway and Huffman townships area, Opeepeesway basin, southern Abitibi greenstone belt; Ontario Geological Survey, Preliminary Map P.3819, scale 1:20 000. Use and Reproduction of Content: The Content may be used and reproduced only in accordance with applicable intellectual property laws. Non-commercial use of unsubstantial excerpts of the Content is permitted provided that appropriate credit is given and Crown copyright is acknowledged. Any substantial reproduction of the Content or any commercial use of all or part of the Content is prohibited without the prior written permission of MNDM. Substantial reproduction includes the reproduction of any illustration or figure, such as, but not limited to graphs, charts and maps. Commercial use includes commercial distribution of the Content, the reproduction of multiple copies of the Content for any purpose whether or not commercial, use of the Content in commercial publications, and the creation of value-added products using the Content. Contact: FOR FURTHER INFORMATION ON PLEASE CONTACT: BY TELEPHONE: BY E-MAIL: The Reproduction of the EIP or Content MNDM Publication Services Local: (705) 670-5691 Toll-Free: 1-888-415-9845, ext. 5691 (inside Canada, United States) [email protected]The Purchase of MNDM Publications MNDM Publication Sales Local: (705) 670-5691 Toll-Free: 1-888-415-9845, ext. 5691 (inside Canada, United States) [email protected]Crown Copyright Queen’s Printer Local: (416) 326-2678 Toll-Free: 1-800-668-9938 (inside Canada, United States) [email protected]
Transcript
THESE TERMS GOVERN YOUR USE OF THIS DOCUMENT
Your use of this Ontario Geological Survey document (the “Content”) is governed by the terms set out on this page (“Terms of Use”). By downloading this Content, you (the
“User”) have accepted, and have agreed to be bound by, the Terms of Use.
Content: This Content is offered by the Province of Ontario’s Ministry of Northern Development and Mines (MNDM) as a public service, on an “as-is” basis. Recommendations and statements of opinion expressed in the Content are those of the author or authors and are not to be construed as statement of government policy. You are solely responsible for your use of the Content. You should not rely on the Content for legal advice nor as authoritative in your particular circumstances. Users should verify the accuracy and applicability of any Content before acting on it. MNDM does not guarantee, or make any warranty express or implied, that the Content is current, accurate, complete or reliable. MNDM is not responsible for any damage however caused, which results, directly or indirectly, from your use of the Content. MNDM assumes no legal liability or responsibility for the Content whatsoever.
Links to Other Web Sites: This Content may contain links, to Web sites that are not operated by MNDM. Linked Web sites may not be available in French. MNDM neither endorses nor assumes any responsibility for the safety, accuracy or availability of linked Web sites or the information contained on them. The linked Web sites, their operation and content are the responsibility of the person or entity for which they were created or maintained (the “Owner”). Both your use of a linked Web site, and your right to use or reproduce information or materials from a linked Web site, are subject to the terms of use governing that particular Web site. Any comments or inquiries regarding a linked Web site must be directed to its Owner.
Copyright: Canadian and international intellectual property laws protect the Content. Unless otherwise indicated, copyright is held by the Queen’s Printer for Ontario.
It is recommended that reference to the Content be made in the following form:
MacDonald, P.J., Bisaillon, J.M. and Gemmell, T.P. 2018. Precambrian geology of the Osway and Huffman townships area, Opeepeesway basin, southern Abitibi greenstone belt; Ontario Geological Survey, Preliminary Map P.3819, scale 1:20 000. Use and Reproduction of Content: The Content may be used and reproduced only in accordance with applicable intellectual property laws. Non-commercial use of unsubstantial excerpts of the Content is permitted provided that appropriate credit is given and Crown copyright is acknowledged. Any substantial reproduction of the Content or any commercial use of all or part of the Content is prohibited without the prior written permission of MNDM. Substantial reproduction includes the reproduction of any illustration or figure, such as, but not limited to graphs, charts and maps. Commercial use includes commercial distribution of the Content, the reproduction of multiple copies of the Content for any purpose whether or not commercial, use of the Content in commercial publications, and the creation of value-added products using the Content. Contact:
FOR FURTHER INFORMATION ON PLEASE CONTACT: BY TELEPHONE: BY E-MAIL:
U sers of OGS prod uc ts should be aware that Ind igenous c ommunities may have Aboriginal or treaty rights or other interests that overlap with areas of mineral potential and exploration.
CREDIT S Geologic al mapping and interpretation by P.J. M ac Donald , J.M . Bisaillon and T .P. Gemmell d uring the summers of 2016 and 2017, with assistanc e from C. Bec kett-Brown, C. Dunn, A. Jerome, E . Perry and T . W atkins. T his map is part of a multi-year, 1:20 000 sc ale bed roc k geology mapping projec t of the southern S wayze area. It is the westward c ontinuation of the map by Gemmell and M ac Donald (2017). Preparation of geophysic al imagery by D.R .B. R ainsford . Preparation of base map by S .A. E vers. Digital d rafting by P.J. M ac Donald and S .A. E vers. Cartographic prod uc tion by R . Corc oran. E d iting by M .G. E aston. Correspond ing and ad d itional d igital d ata related to the information portrayed on the map are available from the following Ontario Geologic al S urvey public ation. M ac Donald , P.J. and Gemmell, T .P. 2019. Geologic al, geochemic al and geophysic al d ata related to the Osway and Huffman townships area, Opeepeesway basin, southern Abitibi greenstone belt; Ontario Geologic al S urvey, M isc ellaneous R elease— Data 362, in press. E very possible effort has been mad e to ensure the ac c urac y of the information presented on this map; however, the Ontario M inistry of E nergy, N orthern Development and M ines d oes not assume liability for errors that may oc c ur. Users should verify c ritic al information. Issued 2018. Information from this public ation may be quoted if c red it is given. It is rec ommend ed that referenc e to this map be mad e in the following form. M ac Donald , P.J., Bisaillon, J.M . and Gemmell, T .P. 2018. Prec ambrian geology of the Osway and Huffman townships area, Opeepeesway basin, southern Abitibi greenstone belt; Ontario Geologic al S urvey, Preliminary M ap P.3819, sc ale 1:20 000.
SOURCES OF INFORMAT ION Digital base map information d erived from the L and Information Ontario W arehouse, L and Information Ontario, M inistry of N atural R esourc es and Forestry, sc ale 1:50 000, with mod ific ations by staff of the M inistry of E nergy, N orthern Development and M ines. M apping c ond uc ted using U T M c o-ord inates in N orth Americ an Datum 1983 (N AD83), Zone 17. Geophysic al interpretation d erived from: Ontario Geologic al S urvey 2012. Ontario airborne geophysic al surveys, magnetic, elec tromagnetic and rad iometric d ata, grid and profile d ata (AS CII and Geosoft® formats) and vec tor d ata, Opeepeesway L ake area— Purc hased d ata; Ontario Geologic al S urvey, Geophysic al Data S et 1238. Compiled geology and mineral d eposit d ata d erived from: Assessment files, R esid ent Geologist’s offic e, T immins. Gemmell, T .P. and M ac Donald , P.J. 2017. Prec ambrian geology of the Yeo and Chester townships area, Chester intrusive c omplex, southern Abitibi greenstone belt; Ontario Geologic al S urvey, Preliminary M ap P.3817, sc ale 1:20 000. Heather, K.B. and S hore, G.T . 1999. Geology, S wayze greenstone belt, Ontario; Geologic al S urvey of Canad a, Open File 3384f, sc ale 1:50 000. M armont, C. 2008. Assessment report on d iamond d rilling at the Jerome gold mine, Osway T ownship, Porc upine M ining Division, Ontario, Canad a, performed by Augen Gold Corp.; unpublished report, T immins R esid ent Geologist’s offic e, assessment file AFR O# 2.39168, AFR I# 20000003485, 909p. M oorhouse, W .W . 1949. T ownship of Osway, Distric t of S ud bury; Ontario Department of M ines, M ap 1949-02, sc ale 1:12 000. Ontario Geologic al S urvey 2017. M ineral Deposit Inventory; Ontario Geologic al S urvey, M ineral Deposit Inventory (January 2017 upd ate), online d atabase. S iragusa, G.M . 1980a. Jerome area (west), Distric t of S ud bury; Ontario Geologic al S urvey, Preliminary M ap P.2369, sc ale 1:15 840. S iragusa, G.M . 1980b. Jerome area (east), Distric t of S ud bury; Ontario Geologic al S urvey, Preliminary M ap P.2370, sc ale 1:15 840. S iragusa, G.M . 1993a. Prec ambrian geology, Osway T ownship and part of Fingal T ownship; Ontario Geologic al S urvey, Open File M ap 211, sc ale 1:15 840. S iragusa, G.M . 1993b. Prec ambrian geology, Huffman T ownship and part of Arbutus T ownship; Ontario Geologic al S urvey, Open File M ap 212, sc ale 1:15 840. Geoc hronologic al d ata d erived from: Ayer, J.A. and Chartrand , J.E . 2011. Geologic al c ompilation of the Abitibi greenstone belt; Ontario Geologic al S urvey, M isc ellaneous R elease— Data 282. Ayer, J.A., Ketc hum, J.W .F. and T rowell, N .F. 2002. N ew geoc hronologic al and neod ymium isotopic results from the Abitibi greenstone belt, with emphasis on the timing and the tec tonic implic ations of N eoarc hean sed imentation and volc anism; in S ummary of Field W ork and Other Ac tivities, 2002, Ontario Geologic al S urvey, Open File R eport 6100, p.5-1 to 5-16. Davis, D.W . 2016. Geoc hronology of roc ks from northwest Ontario 2015-16. Part 2: L A-ICPM S Geochronology, internal report for the Ontario Geologic al S urvey; Jac k S atterly Geoc hronology L aboratory, University of T oronto, T oronto, Ontario, 100p. Davis, D.W ., M énard , J. and S utc liffe, C.N . 2018. U-Pb geoc hronology of samples from northern Ontario. Part B: L A-ICPM S ; internal report for the Ontario Geologic al S urvey, Jac k S atterly Geoc hronology L aboratory, University of T oronto, T oronto, Ontario, 94p. Davis, D.W . and S utc liffe, C.N . 2017. U-Pb geoc hronology by L A-ICPM S in samples from northern Ontario; internal report for the Ontario Geologic al S urvey, Jac k S atterly Geoc hronology L aboratory, University of T oronto, T oronto, Ontario, 102p. Hastie, E .C.G., Kontak, D.J. and L afranc e, B. 2016. Upd ate on ac tivities related to a gold metallogenic stud y of the southern S wayze greenstone belt; in S ummary of Field W ork and Other Ac tivities, 2016, Ontario Geologic al S urvey, Open File R eport 6323, p.8-1 to 8-10. Heather, K.B. 2001. T he geologic al evolution of the Arc hean S wayze greenstone belt, S uperior Provinc e, Canad a; unpublished PhD thesis, Keele University, Keele, S tafford shire, United Kingd om, 370p. Heather, K.B., S hore, G.T . and van Breemen, O. 1995. T he c onvoluted “layer-c ake”: An old rec ipe with new ingred ients for the S wayze greenstone belt, southern S uperior Provinc e, Ontario; in Current R esearc h 1995-C, Geologic al S urvey of Canad a, p.1-10. Kamo, S .L . 2018. Part A: R eport on U-Pb ID-T IM S geoc hronology for the Ontario Geologic al S urvey: Bed roc k mapping projec ts, Ontario, Year 3: 2017–2018; internal report prepared for the Ontario Geologic al S urvey, Jac k S atterly Geoc hronology L aboratory, University of T oronto, T oronto, Ontario, 44p. Osmani, I.A. 1991. Proterozoic mafic d ike swarms in the S uperior Provinc e of Ontario; Chapter 17 in Geology of Ontario, Ontario Geologic al S urvey, S pec ial Volume 4, Part 1, p.661-681. van Breemen, O., Heather, K.B. and Ayer, J.A. 2006. U-Pb geoc hronology of the N eoarc hean S wayze sec tor of the southern Abitibi greenstone belt; Geologic al S urvey of Canad a, Current R esearc h 2006-F1, 32p. Geology is not tied to survey lines. M agnetic d ec lination, for c entre of map area, is approximately 9°32.2'W in 2018. M etric c onversion fac tor 1 foot = 0.3048 m.
On tario Geological SurveyMAP P.3819
PRECAMBRIAN GEOLOGYOSWAY AND HUFFMAN T OWNSHIPS AREA,OPEEPEESWAY BASIN,
PLEIST OCENE Glacial, glac iofluvial and glac iolac ustrine d eposits: sand , gravel, c lay and till U NCONFORMITY
PRECAMBRIAN PROT EROZOIC MESOPROT EROZOIC
Ma fic Intrusive Rock s (Abitibi dike sw a rm) (circa 1140 Ma ) g 31a Olivine gabbro, east-northeast-trend ing d ikes INTRU SIV E CONTACT Ma fic Intrusive Rock s (Sudbury dike sw a rm) (circa 1238 Ma ) g 30a Olivine gabbro, west-northwest-trend ing d ikes INTRU SIV E CONTACT
PALEOPROT EROZOIC Ma fic Intrusive Rock s (Ma ta chew a n dike sw a rm) (circa 2460 Ma ) g 28a Gabbro, northwest-trend ing d ikes 28P Plagioc lase phyric, >1% plagioc lase phenoc rysts INTRU SIV E CONTACT
ARCHEAN NEOARCHEAN
Kenoga missi Ba tholith (Neville p luton): Intermed iate and felsic intrusive roc ks 21a T onalite 21b Granod iorite 21c Q uartz d iorite or d iorite 21d Granite 21m Dikes 21B Biotite bearing 21P Porphyritic 21S S c histose 21X Xenolith bearing INTRU SIV E CONTACT Rice La ke Ba tholith: Intermed iate and felsic intrusive roc ks 20a T onalite 20b Granod iorite 20c Q uartz d iorite or d iorite 20d Granite 20A Amphibole bearing 20B Biotite bearing 20I Intrusion brec c ia 20K Chlorite bearing 20M M agnetite bearing 20P Porphyritic 20S S c histose 20T Gneissic Ra msey–Algoma Gra nitoid Comp lex (Fa wn p luton): Intermed iate and felsic intrusive roc ks 18a T onalite 18b Granod iorite 18c Q uartz d iorite or d iorite 18d Granite 18m Dikes 18A Amphibole bearing 18B Biotite bearing 18I Intrusion brec c ia 18P Porphyritic 18T Gneissic 18X Xenolith bearing INTRU SIV E CONTACT Unsubdivided Intrusive Rock s 16a T onalite 16b Granod iorite 16c Q uartz d iorite 16d Diorite or gabbro 16B Biotite bearing 16P Porphyritic 16S S c histose 16X Xenolith bearing INTRU SIV E CONTACT Felsic to Intermedia te Intrusive Rock s 11a T onalite 11b Granod iorite 11c Q uartz d iorite 11d Granite 11g Intermed iate lamprophyre 11m Dikes 11S S c histose
a This legend is ba sed only on field investiga tions a nd is subject to cha nge ba sed on geochronologica l or geochem ica l da ta . All Preca m bria n rocks ha ve been subjected to regiona l m eta m orphism ; m a ny non-m eta m orphic term s a re used for the sa ke of brevity a nd where the protolith is esta blished.b The letter “C” preceding a code refers to da ta com piled from previous geologica l m a ps listed under “Sources of Inform a tion”.c The letter “G” preceding a code refers to da ta interpreted from a erom a gnetic geophysica l surveys listed under “Sources of Inform a tion”.d Rock codes designa ted with “/” (e.g., 7d/3a ) indica te tha t the observed outcrop displa ys cha ra cteristics tha t could belong to either rock type, but the first rock code is inferred by the a uthors to be predom ina nt.e Rocks codes within pa rentheses “()” following a n “I” or “X” describe the type(s) of rock fra gm ent(s) within the intrusion breccia or xenolith.f Rock type definitions within the “Ridout” deform a tion zone a nd its rela ted spla yed deform a tion zones a re specula tive beca use of the a m ount of deform a tion a nd, a s such, the a ssignm ent of a protolith is specula tive.
g Proterozoic dike swa rm s a re ba sed on Osm a ni (1991).
Porp hyritic Felsic to Intermedia te Intrusive Rock s 10a Porphyry, unsubd ivid ed 10b Q uartz porphyry 10c Feld spar porphyry 10d T onalite to granod iorite 10m Dikes 10I Intrusion brec c ia 10S S c histose 10X Xenolith bearing Ma fic Intrusive Rock s 9a Diorite, gabbro 9b Biotite lamprophyre 9m Dikes 9K Chloritized 9P Porphyritic 9S S c histose 9T Gneissic 9X Xenolith bearing INTRU SIV E CONTACT Chemica l Meta sedimenta ry Rock s 7a Iron formation, unsubd ivid ed 7b Oxid e-fac ies iron formation 7c S ulphid e-fac ies iron formation 7d S ilic ate-fac ies iron formation 7f Chert 7S S c histose Cla stic Meta sedimenta ry Rock s 6a Conglomerate: bould ers and c obbles, c last supported 6b Conglomerate: bould ers and c obbles, matrix supported 6c Pebbly sand stone, matrix supported 6d S and stone 6e S iltstone 6h W ac ke 6K Chlorite bearing 6P Porphyroblastic 6S S c histose Felsic to Intermedia te Meta volca nic Rock s 4a M assive flow 4b L obed flow 4c L obed flow, brec c ia 4f T uff 4g L apilli tuff 4h Crystal tuff 4j T uff brec c ia 4E Coarse-grained flow 4K Chlorite bearing 4Q Q uartz phenoc rystic 4R Feld spar phenoc rystic 4S S c histose 4U Amygd aloid al and /or vesic ular Intermedia te Meta volca nic Rock s 3a M assive flow 3b Pillowed flow 3c Pillow brec c ia 3d Autobrec c ia 3f T uff 3g L apilli tuff 3h Crystal tuff 3j T uff brec c ia 3E Coarse-grained flow 3K Chlorite bearing 3P Feld spar and /or amphibole phenoc rystic 3S S c histose 3T Gneissic 3U Amygd aloid al and /or vesic ular 3Z S ilicified and /or sericitized Ma fic Meta volca nic Rock s 2a M assive flow 2b Pillowed flow 2c Pillow brec c ia 2d Autobrec c ia 2e Flow-top brec c ia 2f T uff 2g L apilli tuff 2h Crystal tuff 2j T uff brec c ia 2k Amphibolite 2E Coarse-grained flow 2J Polygonal joints 2K Chlorite bearing 2P Feld spar and /or amphibole phenoc rystic 2S S c histose 2U Amygd aloid al and /or vesic ular 2Z S ilicified and /or sericitized
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SYMBOLSOutc rop (observed , c ompiled ) Geologic al c ontac t (interpreted , trend only) Geologic al c ontac t; interpreted from geophysic al d ata (trend only) E xtent of mapping Fault (interpreted , trend only) Fault (interpreted , trend only R id out d eformation zone and its related splay d eformation zones (approximate loc ation) Bed d ing; grad ed , fac ing d irec tion known (trend only, inc lined ) Bed d ing; c ross-bed d ed , fac ing d irec tion not known (inc lined ) Bed d ing; c ross-bed d ed , fac ing d irec tion known (trend only, inc lined , vertic al overturned ) Bed d ing; volc anic struc tures other than flow tops and pillows, fac ing d irec tion not known (inc lined , vertic al) Foliation; unknown generation (trend only, inc lined , vertic al) Foliation; first generation (inc lined ) Foliation; sec ond generation (inc lined ) Cleavage; c renulation, Z-asymmetry, unknown generation (inc lined ) L ineation; mineral, unknown generation L ineation; elongation (stretc h), unknown generation L ineation; c renulation, S -asymmetry, unknown generation
Axial fold plane; S -asymmetry, unknown generation (vertic al) Axial fold plane; M -asymmetry, unknown generation (inc lined ) Axial fold plane; Z-asymmetry, unknown generation (trend only, inc lined ) Axial kink plane; S -asymmetry, unknown generation (trend only, inc lined ) Axial kink plane; Z-asymmetry, unknown generation (trend only, inc lined ) Axial kink plane; Z-asymmetry, unknown generation (inc lined with no plunge) S hear; d uc tile, unknown horizontal d isplac ement, unknown generation (inc lined ) S hear; d uc tile, d extral d isplac ement, unknown generation (inc lined ) S hear; d uc tile, sinistral d isplac ement, unknown generation (inc lined ) Igneous c ontac t; d ike (trend only, inc lined ) Vein; unknown generation (trend only, inc lined ) M ineral oc c urrenc e, with c ommod ity M ineral oc c urrenc e (number c orrespond s with “Oc c urrenc es” list) Geoc hronology sample loc ation, with age in M a (number c orrespond s with T able 1) Ad ministrative bound aries (township) R oad (primary, sec ond ary, trail)
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1: 2724
!(1
#Au
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Ag ank apy Au bm chl c p Cu ep Fe gn hem kfs mag mo M o Pb, Pb po py qc v qtz qv ser sp td tel U Zn
a Red a bbrevia tion indica tes m inera liza tion; bla ck a bbrevia tion indica tes observed m inera logy. Abbrevia tions m a y be used on the m a p or in the legend. b Squa re bra ckets a re used to indica te the presence of m inera ls tha t represent significa nt veining, m inera liza tion, a ltera tion pha ses a nd/or distinct m eta m orphic a ssem bla ges, for exa m ple, code 2a [qv] indica tes a m a ssive ba sa lt flow with qua rtz vein(s); code 7fS[po,py,gn] indica tes a schistose chert with pyrrhotite, pyrite a nd ga lena ; code 10bc[a nk] indica tes a qua rtz-feldspa r porphyry with a nkerite a ltera tion; or code 2a /9a [ep] indica tes a m a ssive ba sa lt or ga bbro with seconda ry epidote.
a Da ta c ompiled from Onta rio Geologica l Survey (2017); “Cla ssifica tion” a s designa ted in MDI.b Abbrevia tions: DDH, dia m ond-drill hole; g/t, gra m (s) per tonne; MDI, Minera l Deposit Inventory; oz, ounce; %, weight percent. For other a bbrevia tions, see “Abbrevia tions”.c “Num ber” indica tes the occurrence loca tion on the m a p fa ce.d L oca tions provided a s U TM co-ordina tes in NAD83, Z one 17; however, discrepa ncies m a y occur in the loca tion of the MDI points. U sers should verify critica l loca tions.
Number c Na me a nd MDI Number Cla ssifica tion Commodity Best Historica l Va lue Host Rock (a nd sulp hide minera ls p resent)
Ea sting d (m)
Northing d (m)
Township
1 Osway 1-74 M DI41O09N W 00037
Oc c urrenc e Zn, Pb 0.61 m @ 2.9% Zn, 0.65% Pb, 0.03% Cu (DDH)
R hyolite and c hert–magnetite-oxid e ironstone (sp, gn, c p, py)
400578 5277190 Osway
2 Cipway–S outhwest M DI41O09N W 00009
Oc c urrenc e Au 2.44 g/t Au (grab) Altered porphyry (py, po, c p, apy)
401965 5277236 Osway
3 Cipway M DI41O09N W 00010
Oc c urrenc e Au 2.40 g/t Au (grab) Carbonatized porphyry (py, c p)
402579 5277774 Osway
4 M ac -jo E xtension M DI000000001330
Oc c urrenc e Au 0.614 g/t Au (grab) Chert-magnetite ironstone (py, c p, po, sp, apy)
402922 5272865 Osway
5 Kerr M DI41O09S W 00006
Oc c urrenc e Au 1.37 g/t Au (grab) Intermed iate tuff with quartz veinlets (py)
403054 5274712 Osway
6 GOG-1 Osway M DI41O09S W 00008
Oc c urrenc e Zn anomalous Zn (DDH) S heared basalt (py, sp, gn, c p)
404171 5273514 Osway
7 S kye M DI41O09S W 00002
Oc c urrenc e Au 13.5 g/t Au (grab) S heared and altered basalt (py, apy)
406186 5272649 Osway
8 Jerome M ine M DI41O09S E 00005
Past Prod uc ing M ine with R eserves
Au 1) 1941–1945 prod uc tion: ~56 878 oz Au, ~15 105 oz Ag @ ~5.2 g/t Au (M armont 2008); 2) up to 63.9 g/t Au (DDH)
S heared c ontac t of porphyry and c onglomerate (c p, mo, td , sp, native gold , tel, apy, bm, gn, py, po)
406907 5275114 Osway
9 Burton–Osway M DI41O09S E 00021
Oc c urrenc e Au 1.00 g/t Au, 0.04% Cu (DDH) Altered quartz-feld spar porphyry (c p, py)
408212 5275436 Osway
10 Bi-Ore M DI41O09S E 00004
Oc c urrenc e Au 0.61 m @ 16.1 g/t Au (DDH) S heared and altered basalt (py, apy)
408471 5272384 Osway
11 S hannon M DI41O09S E 00044
Oc c urrenc e Au 13 g/t Au (channel grab) Altered quartz-feld spar porphyry (py)
408655 5274002 Osway
12 Granges DDH GOG-8 M DI41O09N E 00007
Oc c urrenc e Au, Ag 1) 3.89 g/t Au, 15.9 g/t Ag (grab); 2) 0.27% Cu, 2.5 g/t Ag (DDH)
S hear along basalt–c onglomerate c ontac t (c p, py, po)
409135 5277740 Huffman
13 Brad y–Charron property M DI000000001312
Oc c urrenc e Zn 1 m @ 1.235% Zn (DDH) S ulphid ized ironstone or tuff (sp, py, po)
410174 5270718 Arbutus
14 Osway DDH 82-13 M DI41O09S E 00043
Oc c urrenc e Au, Ag 23 g/t Au, 312 g/t Ag (grab) S heared c onglomerate with quartz veining (py, mo, gn, apy, td )
410496 5274946 Huffman
15 Granges DDH GOG7 M DI41O09N E 00008
Oc c urrenc e Zn 0.8% Zn, 4.5 g/t Au (grabs) S heared and altered basalt and silicic lastic sed iments (c p, sp, po, py)
410571 5278864 Huffman
16 Gagne property M DI000000001601
Prospec t Zn, Pb 1) 5.18 m @ 1.72% Zn, 0.49% Pb; 2) 0.61 m @ 7.06% Zn, 2.34% Pb
Oc c urrenc e Fe 0.17 g/t Au, 0.5 g/t Ag, 0.52% Zn (grabs)
Basalts and oxid e ironstones (py)
416550 5270965 Huffman
OCCURRENCESab
Ta ble 1. Geochronologic al results (U/Pb on zirc ons) for samples from the stud y area (see map for loc ations).
b Abbrevia tions: TIMS = ura nium –lea d (U /Pb) therm a l ioniza tion m a ss spectrom etry; L A-ICP-MS = U /Pb la ser a bla tion inductively coupled pla sm a m a ss spectrom etry.a “Num ber” indica tes the loca tion on the m a p.
Numbera
1234a4b5a5b6789101112131415
Methodb
T IM ST IM ST IM S
L A-ICP-M SL A-ICP-M SL A-ICP-M SL A-ICP-M SL A-ICP-M ST IM S
E mplac ementYoungestE mplac ementS tatistic al old er limit on d epositionYoungest grainS tatistic al average ageYoungest grainS tatistic al average ageVolc anismS tatistic al average ageE mplac ementVolc anismE mplac ementCrystallizationS tatistic al old er limit on d epositionS tatistic al average ageVolc anism
Rock Typ e
Q uartz feld spar porphyryS and stoneGranod ioriteS and stoneS and stoneFeld spar porphyry or felsic volc anic lasticFeld spar porphyry or felsic volc anic lasticQ uartz feld spar porphyryR hyolite flowAltered feld spar porphyryQ uartz feld spar porphyryFelsic tuffBiotite hornblend e tonaliteBiotite tonalitePolymic tic c onglomerateFeld spar porphyryFelsic tuff
Ea stingc (m)400083400513401546402515402515402584402584403234403412406989409607410500414580414750416087416303416970
c L oca tions provided a s U TM co-ordina tes in NAD83, Z one 17.d Sources (see “Sources of Inform a tion”): 1) Hea ther (2001); 2) va n Breem en, Hea ther a nd Ayer (2006); 3) this study: Ka m o (2018); 4) this study: Da vis, Mé na rd a nd Sutcliffe (2018); 5) Da vis a nd Sutcliffe (2017); 6) Ayer a nd Cha rtra nd (2011); 7) Ayer, Ketchum a nd Trowell (2002); 8) Hea ther, Shore a nd va n Breem en (1995); 9) Da vis (2016); 10) Ha stie, Konta k a nd L a fra nce (2016).
