GEOPHYSICAL REPORT

ON A UTEM SURVEY

WESTERN CANADA

ON THE CANAM PROPERTY

FORT STEELE M.D., B.C.

- ASSESSMENT REPORT -

Latitude : 49O02’N

Longitude : 116”oo’w

Work Performed by : J.J. Lajoie 8 J.G. Parkinson

Time Period of Surveying July 7 to 24, 1989

Cl aims Covered : CANAM 2, 3, 4, 5, 8, 9, 10

Cl aim Operator : COMINCO LTD.

- FEBRUARY 1990 I. JACKISCH

TABLE OF CONTENTS

/- PLATE 369-89-l LOCATION MAP

LIST AND STATUS OF CLAIMS

INTRODUCTION

LOCATION AND ACCESS

PHYSIOGRAPHY AND DESCRIPTION OF THE UTEM RECONNAISSANCE PROCEDURE

DESCRIPTION OF THE UTEM SYSTEM

INTERPRETATION

CONCLUSIONS

REFERENCE

(in text)

(in text)

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1

1

2

4

4

6

APPENDIX I STATEMENT OF EXPENDITURES

APPENDIX II CERTIFICATE OF QUALIFICATIONS

LEGEND FOR UTEM DATA SECTIONS

LEGEND FOR UTEM COMPILATION MAPS

DATA SECTIONS

PLATES 369-89-2 Claim, Grid and UTEM (in envelope) Compilation Map

A

CANAM PROPERTY Drawn by: Traced by:

RWi..d t.y 0.1. Reuiud D” DU. LOCATION MAP 1

FT. STEELE M.D., B.C.

SlXl.3: IDa’e: Feb. 1990

LIST OF CLAIMS SURVEYED

The CANAM 1 to 10 claims are 100% owned by Cominco Ltd. Claims covered by the 1989 geophysics program are CANAM 2, 3, 4, 5, 8, 9 and 10.

Status of Claims

No. of Claim Old New Units No. Due Date New Date

CANAM 1 10 3469 June 2/90 June 2/91

2 10 3470 June 3/90 June 3/91

3 9 3471 June 3/90 June 3/92

4 18 3472 June 2/90 June 2/91

5 18 3473 June 2/90 June 2/92

6 20 3474 May 30/90 May 30/91

7 20 3475 June 2/90 June 2/91

8 20 3476 June 2/90 June 2/91

9 9 3500 June 17/90 June 17/92

10 20 3501 June 17/90 June 17/92

COMINCO LTD.

EXPLORATION WESTERN CANADA

NTS: 82F/l

GEOPHYSICAL REPORT ON A UTEM SURVEY

ON THE CANAM PROPERTY FORT STEELE M.D., B.C.

- ASSESSMENT REPORT -

INTRODUCTION

During the time period July 7 to 24, 1989, 23.5 km of reconnaissance UTEM surveying was carried out on the CANAM Property by a Cominco geophysical crew under the direction of geophysicist, J.J. Lajoie.

The purpose of the survey was to test the underlying Aldridge Formation for conductors related to or caused by a massive sulphide deposit. The Aldridge sediments are considered to be a favourable host for Sullivan type Zn/Pb volcanic exhalative orebodies.

This report describes the UTEM system presents and discusses the results.

and data plotting format, and

LOCATION AND ACCESS

The CANAM Property is located 37 km east east of Yahk, B.C. Access is from the heads southeast from Yahk. This is the drainage area and is well maintained. access to some parts of the property.

of Creston, B.C. and 8 km south- Hawkins Creek gravel road which main logging haul road for this Tributary logging roads provide

PHYSIOGRAPHY AND DESCRIPTION OF THE UTEM RECONNAISSANCE PROCEDURE

The topography is roughly equally divided between gently and steeply sloping ground, with elevations ranging from 1,100 m to 1,900 m. Vegetation varies from moderately to thickly treed with generally thick underbrush. Some parts of the property have patches which were totally logged out and burnt.

Reconnaissance UTEM does not utilize a well defined, cut and chained grid as in the regular survey, but involves maximizing natural or man-made openings such as roads, trails, open ridge tops, etc. for loop installa-

A tion and survey line traverses. Bushwacking is slow and kept to a minimum.

-, The UTEM receiver operator estimates the station locations concurrent with UTEM data collection. This is done by any combination of compass, alti- meter, topofil .chain, pacing, and/or truck odometer. Obvious features such as curves in roads, road and creek intersections, topographic highs and lows, etc. are also taken into consideration when estimating loop and line locations.

This rough procedure is cost effective and gives adequate results in recognizing obvious conductors of massive sulphide origin.

DESCRIPTION OF UTEM SYSTEM

UTEM is an acronym for "University of Toronto ElectroMagnetometer". The system was developed by Dr. Y. Lamontagne (1975) while he was a graduate student of that University.

The field procedure consists of first laying out a large loop of single strand insulated wire and energizing it with current from a transmitter which is powered by a 1.7 kW motor generator. The loop is generally square shaped, wherever possible, with sides between 500 metres and 1,500 metres long. In this survey, the loop dimension was 1,500 m x 1,000 m. Survey lines are generally oriented perpendicular to one side of the loop and surveying can be performed both inside and outside the loop. The field procedure is similar to Turam, a better known electromagnetic

A surveying method.

The transmitter loop is energized with a precise triangular current waveform at a carefully controlled frequency (30.9 Hz for this survey). The receiver system includes a sensor coil and backpack portable receiver module which has a digital recording facility on cassette magnetic tape. The time synchronization between transmitter and receiver is achieved through quartz crystal clocks in both units which must be accurate to about one second in 50 years.

The receiver sensor coil measures the vertical magnetic component of the electromagnetic field ,and responds to its time derivative. Since the transmitter current waveform is triangular, the receiver coil will sense a perfect square wave in the absence of geologic conductors. Deviations from a perfect square wave are caused by electrical conductors which may be geologic or cultural in origin. The receiver stacks any pre-set number of cycles in order to increase the signal to noise ratio.

The UTEM receiver gathers and records 9 channels of data at each station. The higher number channels (7-8-9) correspond to short time or high frequency while the lower number channels (1-2-3) correspond to long time or low frequency. Therefore, poor or weak conductors will respond on channels 9, 8, 7 and 6. Progressively better conductors will give responses on progressively lower number channels as well. For example, massive, highly conducting sulphides or graphite will produce a response on all nine channels.

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3.

A, The.UTEM receiver records data digitally on a cassette. This tape is played back into a computer at the base camp. The mini computer processes the data and controls the plotting on a small (11" x 15") graphics plotter. Data are portrayed as profiles of each of the nine channels, shown for each survey line of each transmitter loop. These profiles and an interpretive plan are appended to this report.

The magnetic field amplitudes from both the transmitter loop (primary field) and from the electric currents induced in the ground (secondary field) vary considerably from the beginning of a line (near the transmitter loop) to the end of the survey line (far away from the transmitter loop). In order to present such data, a normalizing scheme must be used. In this survey, the primary field from the loop is used for normalizing and presenting the data in two ways.

1. Continuously normalized plots.

This is the standard

a) For Channel 1:

% Ch.1 anomaly =

normalization scheme.

Ch.1 - P x 100 P

where P is the primary field from the loop at the station and Ch.1 is the observed amplitude for Channel 1.

b) For the remaining channels (n=Z to 9)

% Ch.n anomaly = Ch.n - Ch.1 x 100 Ch.1

where Ch.n is the observed amplitude of Channel n (2 to 9).

2. Point normalized plots.

These plots display an arrow at the top of the section indicating the station to which all data on the line are normalized. The purpose of point normalized plots is to display only the relative amplitude variation of the secondary field along the line, that is, only that mag- netic field from the currents induced in the ground.

al For Channel 1:

% Ch.1 anomaly = Ch.1 - Ppn x 100 Ppn

where Ppn is the primary field from the loop at the point norm station and Ch.1 is the observed amplitude for Channel 1.

4.

A bl The remaining channels (n=2 to 9) are Channel 1 reduced and Channel 1 normalized:

% Ch.n anomaly = Ch.n - Ch.lpn x IO0 Ch.lpn

where Ch.n is the observed amplitude of Channel n and Ch.lpn is the observed Channel 1 amplitude at the point norm station

Point normalized plots are usually produced on data sections containing anomalies in order to help interpretation by providing a different perspective to the data. In this survey, all the Data Section numbers containing a 'Ip'l are point normalized plots.

The above normalizing procedures result in chaining errors displayed in Channel 1 only, since all other channels are normalized to Channel 1.

INTERPRETATION

Conductor locations are plotted on Plate 369-89-2. The survey lines are labelled such that the first digit refers to the loop number and the second digit to the line number.

“, Crossover conductors, which correspond to induction currents produced inside sub-surface conductive material, are detected on Line 16 (D.S. 7,7pa,7pb) at Stations 700W and 1600W; on Line 20 (D.S. 8,8pa,8pbl at Station 950W; on Line 22 (D.S. 10,lOpl at Station 65OW, and on Line 23 (D.S. 11,llp) at Station 550W.

Current gathering responses, caused by sharp resistivity changes (geologic contacts), are detected on Line 11 (D.S. 2,2p) at Station 9OOW; Line 12 (D.S. 3,3p) at Station 1100s; Line 16 (D.S. 7,7pa,7pbl at 16OOW; Line 21 (D.S. 9,9p) at Station 12DOE; Line 22 (D.S. 10,lOp) at Station 19DOW, and Line 24 (D.S. 12, 12pa,12pb) at Stations 17OOS, 2200s and 3000s. The apex of the plotted triangle indicates the direction of lower resistivity.

All of the above features are due to either geologic contacts, faults, or minor amounts of mineralization in dykes, sills, etc. No large responses of economic interest can be identified from these results.

CONCULSIONS

23.5 kms of reconnaissance UTEM were carried out on the CANAM Property from July 7 to 24, 1989.

Weak to moderate crossover and contact responses were detected, but no

h conductor of significant size or strength was found on the lines surveyed to indicate an underlying massive sulphide deposit.

5.

Report by :

Geophysicist Cominco Ltd.

Approved for Release : /lu. ~3,

W. J. Wolfe Manager, Exploration Western Canada Cominco Ltd.

Distribution:

Mining Recorder Kootenay Expl. Office Western District Files (1) Geophysics Files (1)

6.

;- REFERENCE

Lamontagne, Y., 1975 Applications of Wideband, Time Domain EM Measurements in Mineral Exploration: Doctoral Thesis, University of Toronto

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APPENDIX I

STATEMENT OF EXPENDITURES

CANAM PROPERTY - July 7 to 24, 1989

STAFF COSTS

a) D. Anderson, project supervisor 3 days 8 $300/day 900..00

b) J.J. Lajoie, geophysicist 17 day @ $415/day 7,055.oo

c) J.G. Parkinson, geophysicist 16 days @ $ZlO/day 3,360.OO

d) N.E. Murphy, assistant 17 days @ $lZO/day 2,040.OO

e) J.V. Bjelica, assistant 13 days 8 $ 85/day 1,105.oo

9) J. Donoghue, helper 17 days 8 $ 85/day 1,445.oo $ 15,905.oo

OPERATING DAY CHARGES Note: This charge is aDDTied for those days on which useful

data compilation, data are acquir<d, to cover the cost of drafting, interpretation and report.

14.5 days 9 $375/day 5,437.'50

EQUIPMENT RENTAL

UTEM System : 15 days 8 $150/day Two 4x4 Trucks 17 days @ $40/day

each truck for

2,250.OO 1,360.OO

etc.)

3,610.OO

EXPENSE ACCOUNTS (Meals, Gas for Trucks & Motor/Generators,

J.J. Lajoie 892.65 J.G. Parkinson 503.15 N.E. Murphy 325.00 J.V. Bjelica 325.00 2,045.80

MISCELLANEOUS

Freight Charges 525.89 Domicile (Creston, B.C.) 850.00 1,375.89

Less: $11,349.67 for work done off claims $ 28,374.19 - 11,349.67

Total Geophysics Costs to be applied $ 17,024.52

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APPENDIX II

CERTIFICATE OF QUALIFICATIONS

I, INGO JACKISCH, of 424 Somerset Street, in the City of North Vancouver, Province of British Columbia, do hereby certify:

1. THAT I graduated with a B.Sc. in Geophysics from the University of British Columbia in 1975.

ii. THAT I am a member of the British Columbia Geophysical Society.

. . . 111. THAT I have been practising Geophysics from 1975 to 1990, and have

been an employee of Cominco Ltd. from 1980 to 1990. R

r, (J#a&& InsJatiisch B.Sc. Geophysicist,'Cominco Ltd.

FEBRUARY 1990

O-7 LEGEND

LITF.M DATA SECTIONS

ORDINATE: Amplitude scale is given in %

ABSCISSA: Station or Picket Numbers in Hundreds of Meters

MEAN DELAY TIME SYMBOL CHAJ$?EL

15 Hz 30 Hz

I 1 '25.6 ms 12.8 ms

/ 2 12.8 6.4

\ 3 6.4 3.2

q 4 3.2 1.6

s 5 1.6 0.8

A 6 0.8 0.4

7 7 0.4 0.2

x 8 0.2 0.1

9 0.1 0.05

10 0.05 0.025

LEGEND

UTEM COMPILATION MAPS

Axis of a crossover anomaly. The number indicates the latest anomalous channel.

Depth indicated by: S - Shallow ( < 50 m) M - Moderate (SO-200 m) D - Deep ( >200 m)

Axis of reversed crossover anomaly produced when a small conductor dips at less than 7d" towards the transmitter. In normal crossover the positive response is towards the trans-

mitter; reversed one, it is away from the transmitter.

Indicates a negative anomaly of width shown

by the dash. The latest anomalous channel is shown. can sometimes be confused with

the negative part of a crossover anomaly.

Outline of a transmitter loop.

Conductor axis located by crossover anomalies

with a conductance determination. The conductance is the interpreted conductivity x

thickness of the conductor in

Siemens).

mhos (same as

Only the principal crossovers are indicated.

NOTE:

DATA SECTIONS

Parts or all of Data Sections 2, 3, 7, 8, 9, 10, 11 and 12 are included in this report for assessment credits.

Data Sections 1, 4, 5 and 6 are off the present claim boundary (on previously unstaked ground) and are not included in this report. $ 11,349.67 has been subtracted from the total amount applied to account for the work not submitted for assessment.

A