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

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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

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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:

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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

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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 .

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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.

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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

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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)

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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.

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& 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

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123 139 172 133

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1 1 1 147 150 18

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8 270 246 244 243 2'51 Z58 260

\ 124 168 26B 267 240 258 2'65 2'68 278 - 6 0

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GLEN E. WHITE GEOPHYSICAL CONSULTING

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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