L3 G E O L O G I C A L B R A N C H !
A S S E S S M E N T R E P O R T
i
-
MULTIPOLE INDUCED POLARIZATION SURVEY
OLIVER RESOURCES LTD.
CONDOR 6,7,8 Mineral Claims Harrison Lake
New Westminster M.D.,B.C.
~at.49~30'30"~. ~ o n ~ . 1 2 1 ~ 5 3 ' 3 0 " ~ . NTS. 92H/12W
Author: Glen E. White P.Eng.
Date of Work: Nov.22-26/83
Date of Report: January 16/84
& & olOPHVSlCAL CONSULTING 6 SIRVICES LTD.
TABLE OF CONTENTS
INTRODUCTION .............................. PROPERTY .................................. LOCATION AND ACCESS ....................... GENERAL GEOLOGY ........................... INDUCED POLARIZATION ...................... DISCUSSION OF RESULTS .....................
............ CONCLUSION AND RECOMMENDATIONS
INSTRUMENT SPECIFICATIONS ................. ............... STATEMENT OF QUALIFICATIONS
COST BREAKDOWN ............................
ILLUSTRATIONS
Figure 1- Location and Claims Map
Figure 2- Induced polarization Survey Area
PAGE
Figure 3-8- Multipole Chargeability and Apparent Resistivity Plots
L
YLn 8 -@Ark
'.F#Ayn+-+ 6
4 ! W-T.A &f FIGURE I
INTRODUCTION
Multipole induced polarization surveying has been
conducted on the Rhyolite Resources Inc. Harrison Lake
gold project and successfully detected the auriferous
pyrite mineralization.
This report describes a test multipole induced
polarization survey conducted along a main logging road
through the CONDOR 7 claim. The purpose of the survey
was to try and detect any indication of a chargeability
anomaly that could be followed up with a survey grid and
a detailed induced polarization survey.
The road test was conducted Nov.22-26/83 by Glen E.
White Geophysical Consulting and Services Ltd. on behalf
of Oliver Resources Ltd.
PROPERTY I The property consists of the CONDOR 6,7 and 8 mineral
claims comprising 50 units as follows:
NAME UNITS RECORD # FILING DATE
CONDOR 6 20 1641 Dec. 16/82
CONDOR 7 20 1642 Dec. 16/82
CONDOR 8 10 1643 Dec. 16/82
LOCATION AND ACCESS I The claims are located on the west side of Harrison
Lake near Twenty Mile Bay. at. 4g030 ' 3 0 " ~ ~ on^. l2l0- 53'30"W, NTS 92H/12Wt New Westminster M.D., B.C.
Access is by a well maintained logging road which
goes past the Weaver Creek salmon spawning grounds.
GENERAL GEOLOGY
The history, economic potential and regional geology
is best described by J.Vincent P.Eng. as follows:
1 $%! & w& 6loPHYSlCAL CONSULTING o SERVICES LTD.
HISTORY
Prospecting and claim staking in 1897 -1898 was
focused on gold-silver discoveries on Fire Mountain and
the west side of Harrison Lake at the Providence about
15 miles northwest of Harrison Hotsprings. About 55
tons of unknown value was produced from the Fire Mountain
prospect, and 350 tons with a value of $34/ton in gold
and silver was produced from the Providence showing.
Further work was done on the Providence in 1929 by the
Harrison Gold Mining and Development Co., but without
success. During the period 1930 - 1934, further under- ground exploration work was carried out on the Fire Moun-
tain occurrences.
In the early 1950's exploration interest through the
area along the southwest side of Harrison Lake was sparked
with the discovery of copper-zinc sulphides. In 1971,
Cominco geologists recognized the geological setting as
similar to the Kuroko-type and Noranda-type environment
which has been exceptionally productive in Japan. Since
then, exploration activity has continued in varying de-
grees, and the SEfJECA prospect, No. 13 on the map, has
received considerable effort by Noranda, Cominco and
Chevron. In 1972 and 1973, the B.C. Mines Branch com-
pleted a mapping project which contributed to the under-
standing of the geological setting.
At present, Curator Resources Ltd. of Calgary holds
the prospect under option and during the 1983 season com-
pleted 8400 feet of drilling in 18 diamond drill holes.
Eleven holes intersected the mineralized zone, and a re-
lease of information will be forthcoming. A search of
the records shows a number of assessment reports filed
on prospects which consist of varying amounts of base
A study of assessment files shows that a number of
sulphide occurrences in similar stratigraphic settings
have been prospected to varying degrees. Although an
economic discovery has not been made, the geologic set-
ting is most encouraging.
The present activity towards the north end of the
belt has developed as a result of the gold discovery made
on the property of Rhyolite Resources Inc. on the west
side of Harrison Lake on Westwood Bay. Published infor-
mation indicates that the precious metal values are hosted
by a gently dipping altered and mineralized zone in the
Fire Lake rocks which varies in thickness up to 10 metres.
Trenches and road cuts expose the zone, and the 1982-83
drilling program and IP survey has established a trend
and geological control.
Although continuing work will contribute to the
understanding of the geological setting, there are strong
indications that the association of volcanic stratigraphy
represents an important discovery perhaps similar to
those found in the Precambrian volcanic terrains of On-
tario and Quebec. The Noranda-type setting has been es-
tablished for the SENECA prospect to the south, and the
overall package of volcanic and volcanoclastic rocks re-
presented by the Harrison and Fire Lake sections deserve
thoughtful evaluation and exploration in the light of
recent conceptual work relative to gold deposits.
5
GEOLOGY
Regional
The west side of Harrison Lake is underlain by the
Harrison Lake Formation and Fire Lake Group of rocks
which consists predominantly of a volcanic and volcano-
clastic stratigraphic sequence. The Fire Lake Group is
exposed in the north half of the area while the Harrison
Lake section occupies the southern portion. The most
recent compilation (GSC Map 1386A) places the Harrison
Lake Formation in the Xiddle Jurassic and the Fire Lake
Group in the Lower Cretaceous. Midway up the lake, out-
liers or segments of the Broken Back Hill Formation and
Bill Hook Creek Group occur on Long Island and the west
side of the lake. The former lies stratigraphically
above the Fire Lake Group, and the latter between the
Harrison Lake and Fire Lake rocks. They appear to be
predominantly sedimentary, but have a pyroclastic content.
In GSC Memoir 335, Dr. J.A. Roddick regards these areas
as comprising roof pendants of varying size within the
intrusive Coast Range plutonic complex.
The Chehalis Pendant includes the extensive area of
Harrison Lake Formation along the west side of the Lake.
The characteristic rocks are described as a thick sequence
of metamorphosed porphyritic andesite and dacite. Since
this work was completed in 1955, logging and mining
exploration activity has opened up the area with the
result that the stratigraphy has taken on considerable
economic significance. Base and precious metal minerali-
zation has been discovered in association with particular
structural and stratigraphic features which suggest a
volcanogenic relationship.
40h 9 74ncmct P. Enp.
6
The Fire Lake Group also occupies a roof pendant.
In the Fire Lake area, northwest of Harrison Lake, three
stratigraphic units have been mapped (Memoir 335,P.42):
1. An upper unit of clastic feldspathic greenstones,
chlorite schist and minor conglomerate has a thick-
ness of 7000 feet.
2. A middle unit of dark slates, shales, argillite, and
greywacke is approximately 6000 feet thick.
3. A basal section consisting of granulites, andesite,
conglomerate, limestones and quartzite is approxi-
mately 2000 feet thick.
From the description provided by Dr. Roddick, it is
apparent that the stratigraphic section represents well
mixed volcanic and sedimentary activity during this per-
iod of geologic time.
In the vicinity of Bremner Creek, the upper unit of
the Fire Lake section is exposed on the northern limb of
a westward plunging anticline which exposes the Harrison
Lake rocks in the core. The Fire Lake rocks consist of
volcanic breccias, volcano-clastics and interbedded flows
of andesite and rhyolite.
Intrusive rocks in the area belong to the Coast
Plutonic Complex which represents a variety of phases and
compositions. Outcrops along the west side of Harrison
Lake expose a medium grey hornblende granodiorite which
is regarded a Middle Eocene in age.
LEGEND
E O C E N E
11 Gronod io r i t e
( 19 1 Q u a r t z D i o r i t e
LOWER C R E T A C E O U S
F IRE L A K E GROUP: Pyroc las t i cs , greenstones, s l a t e , [ l 6 1 greywocke, conq lomero te , l imes tone .
11 BROKEN BACK H I L L : Py roc l as t i c s , g r e y w o c k e
M I D D L E J U R A S S I C
11 BILLHOOK CREEK FORMATION: T u f f , s a n d s t o n e
17 E C H O I S L A N D : A r p i l l i t e , t u f f
HARRISON L A K E : F l o w s , v o l c o n o c l a s t i c s , p y r o c l o s t i c s
T R I A S S I C ( and o l d e r )
I] H O Z A M E E N GROUP : V o l c a n i c s , s e d i m e n t s
SYMBOLS
--- Geological Contocts , approximate
3 M i n e r a l P rospec t ; M I number
X Reco rded P y r i t i z a t i o n
1 5 0 0 Bedd ing A t t i t u d e
metal sulphides hosted by the Harrison Lake volcanics.
The interest in the area has been generated
by the discovery in 1981-82 of gold-silver mineralization
approximately 3 miles northwest of the PROVIDENCE in the
Doctor's Point area. Trenching and diamond drilling in
1982 and 1983 has defined a significant zone of gold-
bearing mineralization which occurs in the Fire Lake
Group of rocks. The drilling program is continuing with
very encouraging results, and an induced polarization
survey was successful in delineating additional target
areas.
ECONOMIC POTENTIAL
Mineral prospects which have been included in the
Provincial Mineral Inventory are plotted on Figure 3 and
illustrate that occurrences of interest have been pros-
pected along the full length of the belt. At the south
end, the SENECA property has received the most concen-
trated work and comprehensive studies have shown that
massive sphalerite, pyrite, and chalcopyrite occur as
discontinuous lenses within a thin horizon of rhyolitic
lithic and lapilli tuff. In 1961, 287 tons were shipped
to Britannia Beach, and the grade recovered averaged
0.06 ounces of gold per ton, 3.34 ounces of silver per
ton, 1.24% copper and 7.08% zinc. Although subsequent
exploration has not outlined an orebody to date, work
continues in a promising and complex environment.
REGIONAL COMPILATION MAP H A R R I S O N L A K E , W E S T S IDE
0 5 k m 10 km.
A f t e r - J.A. R o d d i c k , M o p 1151A
- J.W.H. M o n g e r , Mop 12 - 1969
1
49'20' -
HOT SPRINGS
r
MULTIPOLE INDUCED POLARIZATION SURVEY
The equipment used on this survey was the Huntec Mark
IV transmitter and Mark I11 receiver. Power was obtained
from a Briggs and Stratton motor coupled to a 2.5 KW 400
cycle, three phase generator, providing a maximum of 2.5
KW D.C. to the ground. The cycle time is 2.0 seconds
"current on" and 2.0 seconds "current off", with the pulse
alternately reversing in polarity. Power was transmitted
to the ground through two potential electrodes, C and C2, 1 which were deployed in an expanding array pattern designed
to provide a range of depths of search.
The induced polarization parameters are measured at
potential electrodes, P1 and P situated at a range of 2 ' positions both between the C1 and C2 electrodes, (gradient
array) and outside the C C electrodes (double dipole 1' 2
array), through a 52 conductor cable with takeouts at 25
metre intervals. This cable allows rapid access to a large
number of P1, P2 dipoles from a given receiver position and
for a given C C position. The cable is segmented into 1' 2
150 metre lengths for deployment.
The apparent resistivity is obtained from the ratio of
the primary voltage measured between P1 and P2 during the
current on part of the cycle to the current flowing through
electrodes C1 and C2. A geometric factor is computed from
the C1, C2, P1 and P2 locations to arrive at the apparent
resistivity, measured in ohm-metres.
The apparent chargeability (MI) in milliseconds, is
calculated by Tp (M + 2 ~ ~ + 4 M ~ + 8 M ~ ) = M1 where Tp is the 1
basic integrating time in tenths of seconds. M M M and 1' 2' 3 M are the chargeability effects at various times on the 4
9 & GEOPHYSICAL CONSULTING e SERVICES LTB.
voltage decay curve following switch off of the transmitter,
measured as a percentage of the primary voltage, v~ recorded during the "current on" time. By the use of
these factors, one can gain an estimate of the decay curve
terms chargeability for the given time Tp.
Field data logging, reduction and plotting is accom-
plished with a HP-85 computer.
2 = PROVIDENCE 3 = NAGY 4 = K I N G I (STAR) 5 = MONEY SPINNER 6 - BARKOOLA 7 = BLUE LEAD 8 - STAVE RIVER 9 = MAYFLOWER (DANDY1
KILOMETRES m 0 2 4 6 8 1 0
. . . . . . . . . . . . . . . . . . . . . L + + + + + + + + + + + + + + + + + + + +
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+ + + + + + + +
CREEK, AND BROKENBACK HILL + + + + + + +
FORMATIONS AND POSSIBLE f z 1 FIRE LAKE GROUP + + + + + +
- + + + + + + TWIN ISLAND AND CHILLI-
SYMBOLS
HOT SPRING . . . . . . . . . . . . . . . . 0
H a r r i s o n Lake f a u l t s y s t e m , p a r t i c u l a r l y i t s n o r t h e r n s e c t i o n where i t i n t e r s e c t s b o t h g r a n i t i c p l u t o n s and t h e F i r e Lake Group, c o u l d r e p r e s e n t a n i n t e r e s t i n g e x p l o r a t i o n t a r g e t f o r b o t h h i g h e r tempera- t u r e v e i n and e p i t h e r m a l , C i n o l a - t y p e g o l d m i n e r a l i z a t i o n .
-
Figure 21.. Regional geology of t h e H r r l s o n Lake f a u l t system s h w l n g h o t spr ing and gold occurrences. IGeolog adapted a f t e r Roddi dc (1965) and Monger (1970) 1.
$Ln 8 a& , r # X y n ; - +
~~urrp-i hi PLATE 1
DISCUSSION OF RESULTS
The multipole induced polarization survey was con-
ducted on a preliminary test basis, the results of which
are shown on Figures 3-6. A very strong response is
at 675W on Figure 3. A high of 111 milliseconds was de-
tected which appears to reflect an easterly dipping
structure. However, the apparent resistivity data shows
a moderate high which could indicate a rock type or
possibly a zone of silicification. The remainder of this
test line on Figure 4 shows several weak responses.
Figure 5 covers the test section along the road at
the southeast corner of the claims. A very strong
response was detected at lOOE and a strong response at
300E. Both anomalies are associated with resistivity
lows which would suggest mineralized fault or shear zones.
CONCLUSION AND RECOMMENDATIONS
A test program of 1.5 km of multipole induced
polarization surveying was completed along a major logging
road on the CONDOR 7 claim. This survey detected a three
excellent chargeability anomalies which should be examined
in detail. It is recommended that geology geochemistry,
ground magnetometer and multipole induced polarization
surveying be conducted.
Respectfully submitted,
Glen E. White P.Eng
$%& & w& OEOPHISICAL CONSULTINO & SERVICES LTD. A
I mSTRUMENT SPECIFICATIONS
INDUCED POLARIZATION SYSTEM
A Instruments
(a) Type - pube
(b) Make - Huntec
(c) Se r i a l No. - transmitter #lo7 - receiver 13016
B, Specifications
(a) Size and Power - 2.5 ICW
(b) Sensit ivi ty - 300 x 10.5 vol t s
(c) Power Sources - 2.5 lCll 400 cycle - three-phase generator
(d) Power - 8 H.P. Briggs and Stra t ton O 3000 R.P.M.
(e) Timing - electronic, remote and direct .
( f ) Readings - (i) ampls ( i i ) vo l t s primary and secondary
(g) Calculate ( i ) Resist ivi ty ohm-meters (ohm-feet)
( i i ) Chargeability - milliseconds
C. Survey Procedures
(a) Method - power supplied t o mobile probe along TW 18 stranded wire from stationary set-up
(b) Configuration - Pole-dipole ( three electrode array) Plot point midway between 21 and P1
D. Presentation
Contour Yaps ( i ) Chargeability - milliseconds
(ii) Resistivity - ohm-meters (ohm-feet)
i 9bt & ~ / ~ L . c ; P GEOPHISlCIL CONSULTING & SERVICES LTD.
15
STATEMENT OF QUALIFICATIONS
NAME :
PROFESSION:
White, Glen E., P.Eng.
Geophysicist
EDUCATION: B.Sc. Geophysicist- Geology University of British Columbia
PROFESSIONAL ASSOCIATIONS: Registered Professional Engineer,
Province of British Columbia
Associate member of Society of Exploration Geophysicists.
Past President of B.C. Society of Mining Geophysicists.
EXPERIENCE : Pre-Graduate experience in Geology - Geochemistry - Geophysics with Anaconda American Brass.
Two years Mining Geophysicist with Sulmac Exploration Ltd. and Airborne Geophysics with Spartan Air Services Ltd.
One year Mining Geophysicist and Technical Sales Manager in the Pacific north-west for W.P. McGill and Associates.
Two years Mining Geophysicist and super- visor Airborne and Ground Geophysical Divisions with Geo-X Surveys Ltd.
Two.'years Chief Geophysicist Tri-Con Exploration Surveys Ltd,
I Twelve years Consulting Geophysicist.
Active experience in all Geologic Provinces of Canada.
S3 813W
ttle
130-o
an3sd
am
mm
g
mm
ae
a
m
OJ
tw
03
-
cu
bc
or
n-
I
I I
I I
- yI
M00Z
-
Fc
N-
wm
w
m~
r-
P-
WF
p
~~
~~
.-
~r
cd
d
MB
SE
-
B H
-I
-
=I- s
5Y
"
E v
a a
3:
~:
o
a
mJ
yw
W
zR
E
J
ICI n
wa
y
~E
o
ZiE
h 0
I- -I 3
r:
rr)
.. CT~ U
I. -
03 \ 2
d
Z
.. W
k u
M0
Ot-
LP - e
.. VI
MD
St-
.. r
nh
h*
LO
rn
Ei 01 +
QN
~I
L~
L
P-
a
MBO
S-
MB
SS
-
Ln
--s
Z
Y a
8 u W
r: H I-
.-, L'
,F
z
M089-
? .. I-
CP
MI
nr
nI
CI
ln
m
mm
ru
bl
m
Nh
lN
nJ
NN
P 3 0:
!- m
P
H
h
w
>'
0
- I- n
.
F
zl I- H
PI a:
>
t-l W
I-
u
LY r
Cf Ln K!
I
W
0
Ik:
LT
Z
W
'- t-56 H
3l-
rg' UW
ct
V
.-I H
W
E--. u E
zGE
u
*
A$
"
C! 0
W
Ll
- II z II I II 3 II I x II m EJ 61 m m m w 19 m m II II ll3 E l m UJ m Ei 00 m rr)
d A
8 A
0 ID m m N 'Y i ry - I I I I I I I I
CHRRGERB I L I TY (msec 1 'i i h 1
0
I OL
6 0 Onk 3 ZI
10
\o - 10la
PESISTIVITY (Ohm-Met res ) n n ,o
~ ~ ~ 2 2 0 251 2PB 215 2
269 263 229 258 297 25 19? 128 229 263 231 278 25f: lS7
216 218 233 247 267 Z68 Z
ZL3 223 244 273 253 295 LB3
ZLL 2 7 248 268 261 ZLL 194
20
-1 4e
- 6 0
- 88
- 100 1 I
GLEN E. WHITE GEOPHYSICAL CONSULTING
& SERVICES LTD ,
H ETRES i .
INSTRUMENT: HUNTEC TIME DOMAIN 0 25 5 Q 75 i 0 R
OLIVER RESOURCES LTD. HflPPISON LAVE PPOJECT
MULTIPOLE INDUCED POLFRKZATION L INE MC
DRTE: NOVH53 . F I G . : 4
- W W W W W W W W W W W W W m m w m 5 w m 5 w w m m m rZ) m ~r, 03 a rn m rn Q 10 4 d d
El 10 B
i i' N ry CU - m * * m I I I I I 1 I I I I 1
CHRRCERB I L 1 TY Cmsec 1
18 18
1"
1 e
8 8 \O $
- 2 0 I I- a
- 4 " gc I OC
- 6 s 8ki z z
- R B
- 1 0 0
RESISTIVITY (Ohm-Met res ) ,O
123 139 172 133
96 134 15B 155 184 - 2 8
1 1 1 147 150 18
7'LZZ 141 183 { - 4 8
8 270 246 244 243 2'51 Z58 260
\ 124 168 26B 267 240 258 2'65 2'68 278 - 6 0
140 175 158 / - BEl
- 188 I
GLEN E. WHITE GEOPHYSICAL CONSULTING
k SERVICES LTD.
METRES I
INSTRUMENT: HUNTEC TIME DOMAIN B 25 5 9 75 199
OL I V E R RESOURCES LTD . HRRRISON LAKE PROJECT
MULTIPOLE lNlJUCEl3 POLRRIZRTION L INE MR
IIRTE: NOV,'83 F I G . : 5