42MWEM71 Z.58Z9 ROUS LAKE010

REPORT ON

COMBINED HELICOPTER-BORNE

MAGNETIC, ELECTROMAGNETIC,

AND VLF-EM SURVEY

on

ROUS LAKE CLAIM GROUPS

for

S. G. HAWKINS

by

AERODAT LIMITED

May, 1983

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1.

2.

3.

4

5.

6.

7.

INTRODUCTION

SURVEY AREA AND LOCATION

AIRCRAFT EQUIPMENT AND PERSONNEL

3.1 Aircraft

3.2 Equipment

3.2.1 Electromagnetic System

3.2.2 VLF-EM System

3.2.3 Magnetometer

3.2.4 Magnetic Base Station

3.2.5 Radar Altimeter

3.2.6 Tracking Camera

3.2.7 Analog Recorder

3.2.8 Digital Recorder

3.2.9 Radar Positioning System

DATA PRESENTATION

4.1 Base Map and Flight Path Recovery

4.2 Electromagnetic Profile Maps

4.3 Magnetic Contour Maps

4.4 VLF-EM Contour Maps

INTERPRETATION

RECOMMENDATIONS

DISCUSSION OF RESULTS

1

2

3

3

3

3

3

3

3

3

3

3

3

3

4

4

4

4

4

5

6

7

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APPENDIX I - General Interpretive Considerations

LIST OF MAPS

(Scale: 1:15,000)

Maps

1 Airborne Electromagnetic Survey Profiles 4500 Hz (coaxial)

2 Airborne Electromagnetic Survey Profiles 4100 Hz (coplanar)

3 Total Field VLF-EM

4 Total Field Magnetic Map

5 Interpretation

6 Claim Locations

1-1

1. INTRODUCTION

During the period of March 2 to June 14, 1983

Aerodat carried out an airborne geophysical survey

of approximately 1,570 square kilometers in the Hemlo

area of Ontario. Equipment operated include a 3

frequency HEM and VLF electromagnetic systems, a

magnetometer and a radar positioning device. At a

nominal line spacing of 100 meters a total of

15,770 line kilometers of data was acquired.

This report, on behalf of S. G. Hawkins refers to a

part of the overall survey, consisting of 55 line

miles, flown during the period of April 11 to April 20,

1983.

2-1

2. SURVEY AREA AND LOCATIONS

The index map below outlines the overall survey and

the location of the property to which this report

refers. The property outline and related mining

claim numbers are indicated on the maps accompanying

the report.

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3-1

3. AIRCRAFT EQUIPMENT

3.1 Aircraft

The helicopter used for the survey was an Aerospatial

Astar 350D owned and operated by North Star Helicopters.

Installation of the geophysical and ancillary equipment

was carried out by Aerodat. The survey aircraft was

flown at a nominal altitude at 60 meters.

3.2 Equipment

3.2.1 Electromagnetic System

The electromagnetic system was an Aerodat/

Geonics 3 frequency system. Two vertical

coaxial coil pairs were operated at 950 and

4500 Hz and a horizontal coplanar coil pair

at 4100 Hz. The transmitter-receiver separa

tion was 7 meters. In-phase and quadrature

signals were measured simultaneously for the

3 frequencies with a time-constant of 0.1

seconds. The electromagnetic bird was towed

30 meters below the helicopter.

3.2.2 VLF-EM System

The VLF-EM System was a Herz 1A. This instru

ment measures the total field and vertical

3-2

quadrature component of the selected frequency.

The sensor was towed in a bird 15 meters below

the helicopter. The station used was NAA,

Cutler Maine, 17.8 KHz or NLK, Jim Creek

Washington, 24.8 KHz.

3.2.3 Magnetometer

The magnetometer was a Geometrics G-803 proton

precession type. The sensitivity of the

instrument was l gamma at a 0.5 second sample

rate. The sensor was towed in a bird 15 meters

below the helicopter.

3.2.4 Magnetic Base Station

An IFG proton precession type magnetometer was

operated at the base of operations to record

diurnal variations of the earths magnetic

field. The clock of the base station was

synchronized with that of the airborne system.

3-3

3.2.5 Radar Altimeter

A Hoffman HRA-100 radar altimeter was used to

record terrain clearance. The output from the

instrument is a linear function of altitude

for maximum accuracy.

3.2.6 Tracking Camera

A Geocam tracking camera was used to record

flight path on 35 mm film. The camera was

operated in strip mode and the fiducial numbers

for cross reference to the analog and digital

data were imprinted on the margin of the film.

3.2.7 Analog Recorder

A RMS dot-matrix recorder was used to display

the data during the survey. A sample record

with channel identification and scales is

presented on the following page.

ANALOG CHART

CAMERA ^FIDUCIAL l

J*** .___;___-

VLF QUAD.

COPLANAR QUA*.

COPLANAR life-PHASE

- COAXIAL QUAD

(HIGH FREQIN-PHA8E T EQ-.) -* 20 ppm

COAXIAL

(LOW FREQ.) I 20 ppm.

COAXIAI., IN-PHASE(LOW FREQ.) 20 ppm.

"^MANUAL FIDUCIAL

3-4

3.2.8 Digital Recorder

A Perle DAC/NAV data system recorded the survey

data on cassette magnetic tape. Information

recorded was as follows:

Equipment

EM

VLF-EM

magnetometer

altimeter

fiducial (time)

fiducial (manual)

Interval

0.1 second

0.5 second

0.5 second

1.0 second

1.0 second

0.2 second

3-5

3.2.9 Radar Positioning System

A Motorola Mini-Ranger (MRS III) radar

navigation system was utilized for both

navigation and track recovery. Transponders

located at fixed known locations were inter

rogated several times per second and the ranges

from these points to the helicopter measured

to several meter accuracy. A navigational

computer triangulates the position of the

helicopter and provides the pilot with naviga

tion information. The range/range data was

recorded on magnetic tape for subsequent flight

path determination.

4-1

4. DATA PRESENTATION

4.1 Base Map and Flight Path Recovery

The base map, at a scale of 1/15,000 is an

enlargement of published 1/50,000 topographic

maps.

The flight path was derived from the Mini Ranger

radar positioning system. The distance from the

helicopter to two established reference locations

was measured several times per second and the

position of the helicopter mathematically calcu

lated by triangulation. It is estimated that the

flight path is generally accurate to about 30

meters, with respect to the topographic detail of

the base map.

4-2

4.2 Electromagnetic Profile Mapst

The electromagnetic data was recorded digitally at

a high sample rate of 10/second with a small time

constant of 0.1 second. A two stage digital filtering

process was carried out to reject major sferic events,A

and reduce system noise.

Local atmospheric activity can produce sharp, large

amplitude events that cannot be removed by conventional

filtering procedures. Smoothing or stacking will reduce

their amplitude but leave a broader residual response

that can be confused with a geological phenomenon. To

avoid this possibility, a computer algorithm searches

out and rejects the major "sferic" events.

The signal to noise was further enhanced by the

application of a low pass filter. The filter was

applied digitally. It has zero phase shift which

prevents any lag or peak displacement from occurring

and it suppresses only variation with a wavelength

less than about 0.25 seconds. This low effective time

constant permits maximum profile shape resolution.

Following the filtering processes, a base level

correction was made. The correction applied is a linear

function of time that ensures that the corrected

amplitude of the various inphase and quadrature components

4-3

is zero when no conductive or permeable source is

present. This filtered and levelled data was then

presented in profile map form.

The in-phase and quadrature responses of the coaxial

4500 Hz and the coplanar 4100 Hz configuration are

presented with flight path on the topographic base

map.

4.3 Magnetic Contour Maps

The aeromagnetic data was corrected for diurnal

variations by subtraction of the digitally recorded

base station magnetic profile. No correction for

regional variation is applied.

The corrected profile data was interpolated onto a

regular grid at a 2.5 mm interval using a cubic

spline technique. The grid provided the basis for

threading the presented contours at a 10 gamma

interval.

4.5 VLF-EM Contour Maps

The VLF-EM signal, was compiled in map form. The

mean response level of the total field signal was

removed and the data was gridded and contoured at

an interval of 2%.

5-1

5. INTERPRETATION

The electromagnetic profile maps and VLF contour

map were analysed and conductor axes interpreted.

The axes identified are divided into 2 classific

ations; "probable bedrock conductors" and "possible

bedrock conductors".

In the first category are those conductors that

display relatively clear characteristics of a thin,

steeply dipping conductive source. A discussion

of the HEM response shape is provided in the

Appendix. Anomalies with less distinctive charac

teristics were also included in this category if

associated with a magnetic feature.

The second category, "possible bedrock conductor"

were not adequately distinguished by HEM response

shape or magnetic association to rule out a

conductive overburden source.

6-1

6. RECOMMENDATIONS

The "Hemlo" gold deposit is a very weak electro

magnetic conductor. Cultural interference along

the road prevented reliable evaluation of electro

magnetic data over the main zone; however, weak

HEM and VLF-EM responses are noted along strike.

The magnetic contour map clearly showed an assoc

iated linear magnetic anomaly of about 150 gammas

amplitude.

Gold mineralization, disseminated in the rock

cannot be expected to produce a measureable elect

romagnetic anomaly. The associated geologic

formation may become measureably conductive due to

accessory sulphide or graphite mineralization or

even electrolytic conduction within faults and

shears.

6-2

Interpreted bedrock conductor axes indicate zones

potentially favourable to gold mineralization and

deserve ground follow-up investigation. Those

most familiar with the detailed geology of the area

can best evaluate the potential significance of the

conductors and magnetic features and assign relative

follow up priority.

Respectfully submitted.

August 24, 1983 R. L. Scott Hogg, BASc., P.Eng.

7-1

DISCUSSION OF RESULTS

The magnetometer map shows two northeast striking

highs, one extending through Rous Lake and the second

through Pringle siding, which can be correlated with

rocks mapped as mafic and felsic metavolcanics.

The two pronounced northwest striking magnetic highs

are the expression of diabase dykes.

Possible bedrock conductors should be investigated.

(1) This trend is visible in both the coaxial EM

and VLF surveys. It lies on strike with mapped

felsic lapilli tuff and crystal tuff.

(2) The existence of a weak conductor at this loc

ation is conjectural, because of the proximity of

the power line. The VLF survey shows additional

evidence of its existence.

(3) Conductive overburden obscures this trend, and

the proximity of power lines prevents any VLF

correlation.

(4) The series of weak, east-west striking trends

along the course of Little Black River may be

related to surficial organic material or to a

bedrock valley marking a shear structure.

APPENDIX I

GENERAL INTERPRETIVE CONSIDERATIONS

Electromagnetic

The Aerodat 3 frequency system utilizes 2 different

transmitter-receiver coil geometries. The traditional

coaxial coil configuration is operated at 2 widely

separated frequencies and the horizontal coplanar coil

pair is operated at a frequency approximately aligned

with the higher frequency.

The electromagnetic response measured by the helicopter

system is a function of the "electrical" and "geometrical"

properties of the conductor. The "electrical" property

of a conductor is determined largely by its conductivity

and its size and shape; the "geometrical" property of the

response is largely a function of the conductors shape and

orientation with respect to the measuring transmitter and

receiver.

Electrical Considerations

For a given conductive body the measure of its conductivity

or conductance is closely related to the measured phase

shift between the received and transmitted electromagnetic

field. A small phase shift indicates a relatively high

conductance, a large phase shift lower conductance. A

small phase shift results in a large in-phase to quadrature

- 2 - APPENDIX I

ratio and a large phase shift a low ratio. This relation

ship is shown quantitatively for a vertical half-plane

model on the phasor diagram. Other physical models will

show the same trend but different quantitative relation

ships .

The conductance and depth values as determined are correct

only as far as the model approximates the real geological

situation. The actual geological source may be of limited

length, have significant dip, its conductivity and thickness

may vary with depth and/or strike and adjacent bodies and

overburden may have modified the response. In general the

conductance estimate is less affected by these limitations

than the depth estimate but both should be considered a

relative rather than absolute guide to the anomalies

properties.

KM

C

AEROOAT HEM SYSTEM RESPONSE VERTICAL HALF-PLANE

- 3 - APPENDIX I

Conductance in mhos is the reciprocal of resistance in

ohms and in the case of narrow slab-like bodies is the

product of electrical conductivity and thickness.

Most overburden will have an indicated conductance of less

than 2 mhos; however, more conductive clays may have an

apparent conductance of say 2 to 4 mhos. Also in the low

conductance range will be electrolytic conductors in faults

and shears.

The higher ranges of conductance, greater than 4 mhos,

indicate that a significant fraction of the electrical

conduction is electronic rather than electrolytic in nature.

Materials that conduct electronically are limited to certain

metallic sulphides and to graphite. High conductance

anomalies, roughly 10 mhos or greater, are generally limited

to sulphide or graphite bearing rocks.

Sulphide minerals with the exception of sphalerite, cinnabar

and stibnite are good conductors; however, they may occur

in a disseminated manner that inhibits electrical conduction

through the rock mass. In this case the apparent conductance

can seriously underrate the quality of the conductor in

geological terms. In a similar sense the relatively non

conducting sulphide minerals noted above may be present in

significant concentration in association with minor conductive

- 4 - APPENDIX I

sulphides, and the electromagnetic response only relate

to the minor associated mineralization. Indicated conductance

is also of little direct significance for the identification

of gold mineralization. Although gold is highly conductive

it would not be expected to exist in sufficient quantity

to create a recognizable anomaly, but minor accessory sulphide

mineralization could provide a useful indirect indication.

In summary, the estimated conductance of a conductor can

provide a relatively positive identification of significant

sulphide or graphite mineralization; however, a moderate

to low conductance value does not rule out the possibility

of significant economic mineralization.

Geometrical Considerations

Geometrical information about the geologic conductor can

often be interpreted from the profile shape of the anomaly.

The change in shape is primarily related to the change in

inductive coupling among the transmitter, the target, and

the receiver.

In the case of a thin, steeply dipping, sheet-like conductor,

the coaxial coil pair will yield a near symmetric peak over

the conductor. On the other hand the coplanar coil pair will

pass through a null couple relationship and yield a minimum

over the conductor, flanked by positive side lobes. As the

dip of the conductor decreases from vertical, the coaxial

- 5 - APPENDIX I

anomaly shape changes only slightly, but in the case of

the coplanar coil pair the side lobe on the down dip side

strengthens relative to that on the up dip side.

As the thickness of the conductor increases, induced

current flow across the thickness of the conductor becomes

relatively significant and complete null coupling with the

coplanar coils is no longer possible. As a result, the

apparent minimum of the coplanar response over the conductor

diminishes with increasing thickness, and in the limiting

case of a fully 3 dimensional body or a horizontal layer

or half-space, the minimum disappears completely.

A horizontal conducting layer such as overburden will produce

a response in the coaxial and coplanar coils that is a

function of altitude (and conductivity if not uniform). The

profile shape will be similar in both coil configurations*

with an amplitude ratio (coplanar/coaxial) of about 4/1.

In the case of a spherical conductor, the induced currents

are confined to the volume of the sphere, but not relatively

restricted to any arbitrary plane as in the case of a sheet-

like form. The response of the coplanar coil pair directly*

over the sphere may be up to 8 times greater than that of

the coaxial coil pair.

- 6 - APPENDIX I

In summary a steeply dipping, sheet-like conductor will

display a decrease in the coplanar response coincident

with the peak of the coaxial response. The relative

strength of this coplanar null is related inversely to

the thickness of the conductor; a pronounced null indicates

a relatively thin conductor. The dip of such a conductor

can be inferred from the relative amplitudes of the side-lobes.

Massive conductors that could be approximated by a conducting

sphere will display a simple single peak profile form on both

coaxial and coplanar coils, with a ratio between the coplanar

to coaxial response amplitudes as high as 8.*

Overburden anomalies often produce broad poorly defined

anomaly profiles. In most cases the response of the coplanar

coils closely follows that of the coaxial coils with a

relative amplitude ratio of 4.*

Occasionally if the edge of an overburden zone is sharply

defined with some significant depth extent, an edge effect

will occur in the coaxial coils. In the case of a horizontal

conductive ring or ribbon, the coaxial response will consist

of two peaks, one over each edge; whereas the coplanar coil

will yield a single peak.

- 7 - APPENDIX I

* It should be noted at this point that Aerodat's definition

of the measured ppm unit is related to the primary field

sensed in the receiving coil without normalization to the

maximum coupled (coaxial configuration). If such normal

ization were applied to the Aerodat units, the amplitude

of the coplanar coil pair would be halved.

- 8 - APPENDIX I

Magnetics

The Total Field Magnetic Map shows contours of the

total magnetic field, uncorrected for regional varia

tion. Whether an EM anomaly with a magnetic correla

tion is more likely to be caused by a sulphide deposit

than one without depends on the type of mineralization.

An apparent coincidence between an EM and a magnetic

anomaly may be caused by a conductor which is also

magnetic, or by a conductor which lies in close proximity

to a magnetic body. The majority of conductors which are

also magnetic are sulphides containing pyrrhotite and/or

magnetite. Conductive and magnetic bodies in close

association can be, and often are, graphite and magnetite.

It is often very difficult to distinguish between these

cases. If the conductor is also magnetic, it will usually

produce an EM anomaly whose general pattern resembles

that of the magnetics. Depending on the magnetic perme

ability of the conducting body, the amplitude of the

inphase EM anomaly will be weakened, and if the conduc

tivity is also weak, the inphase EM anomaly may even be

reversed in sign.

- 9 - APPENDIX I

VLF Electromagnetics

The VLF-EM method employs the radiation from powerful

military radio transmitters as the primary signals.

The magnetic field associated with the primary field

is elliptically polarized in the vicinity of electrical

conductors. The Herz Totem uses three coils in the X.

Y. Z. configuration to measure the total field and

vertical quadrature component of the polarization

ellipse.

The relatively high frequency of VLF 15-25 KHz provides

high response factors for bodies of low conductance.

Relatively "disconnected" sulphide ores have been found

to produce measurable VLF signals. For the same reason,

poor conductors such as sheared contacts, breccia zones,

narrow faults, alteration zones and porous flow tops normally

produce VLF anomalies. The method can therefore be used

effectively for geological mapping. The only relative dis

advantage of the method lies in its sensitivity to conductive

overburden. In conductive ground the depth of exploration

is severely limited.

The effect of strike direction is important in the sense

of the relation of the conductor axis relative to the

energizing electromagnetic field. A conductor aligned

along a radius drawn from a transmitting station will be

- 10 - APPENDIX I

in a maximum coupled orientation and thereby produce a

stronger response than a similar conductor at a different

strike angle. Theoretically it would be possible for a

conductor, oriented tangentially to the transmitter to

produce no signal. The most obvious effect of the strike

angle consideration is that conductors favourably oriented

with respect to the transmitter location and also near

perpendicular to the flight direction are most clearly

rendered and usually dominate the map presentation.

The total field response is an indicator of the existence

and position of a conductivity anomaly. The response will

be a maximum over the conductor, without any special filtering,

and strongly favour the upper edge of the conductor even in

the case of a relatively shallow dip.

The vertical quadrature component over steeply dipping sheet

like conductor will be a cross-over type response with the

cross over closely associated with the upper edge of the

conductor.

The response is a cross-over type due to the fact that it

is the vertical rather than total field quadrature component

that is measured. The response shape is due largely to

geometrical rather than conductivity considerations and

the distance between the maximum and minimum on either side

of the cross-over is related to target depth. For a given

target geometry, the larger this distance the greater the

- 11 - APPENDIX l

depth.

The amplitude of the quadrature response, as opposed

to shape is function of target conductance and depth

as well as the conductivity of the overburden and host

rock. As the primary field travels down to the conductor

through conductive material it is both attenuated and

phase shifted in a negative sense. The secondary field

produced by this altered field at the target also has an

associated phase shift. This phase shift is positive and

is larger for relatively poor conductors. This secondary

field is attenuated and phase shifted in a negative sense

during return travel to the surface. The net effect of

these 3 phase shifts determine the phase of the secondary

field sensed at the receiver.

A relatively poor conductor in resistive ground will yield

a net positive phase shift. A relatively good conductor

in more conductive ground will yield a net negative phase

shift. A combination is possible whereby the net phase

shift is zero and the response is purely in-phase with no

quadrature component.

A net positive phase shift combined with the geometrical

cross-over shape will lead to a positive quadrature response

on the side of approach and a negative on the side of

departure. A net negative phase shift would produce the

reverse. A further sign reversal occurs with a 180 degree

- 12 - APPENDIX I

change in instrument orientation as occurs on reciprocal

line headings. During digital processing of the quad

rature data for map presentation this is corrected for

by normalizing the sign to one of the flight line headings.

MinislryotNatural"-.sources

Ontario

Report of Work "H (Geophysical. Geological. a~ j^ Geochemical and Expenditures)

The Minin; 42De9NEa*7l 2.5839 ROUS LAKE 300Type of Survey(*T"

Claim Holder!*)

Township or Arc*

Prospector's

f

C Z (g -(* l f }'s UcenVNo: ——————

Add rets

Survey Company"

Name and Address of Author (of Oeo-Technical

Date of Survey (from * to)/O x- 8-31 /2 6~ 83Day j Mo. l Yr. l Pay | Mo. | Yr.

Total Mie* of line Cut

sc&r-r;Credits Requested per Each Claim in Columns at rightSpecial Provision*

For first survey: Enter 40 days. (Thisincludes line cutting)

For each additional survey:using the same grid:

Enter 20 days (for each)

Man Days

Complete reverse sideand enter total (s) here

Airborne Credit*

credits do not apply to Airborne Surveys.

Geophysical

- Electromagnetic

- Magnetometer

- Radiometric

-Other

Geological

Geochemical

Geophysical

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kteaMUWMtargneuMnenr

- Radiometric

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Geological

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Days per Claim

Days per Claim -

Day* per Claim

?*

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Expenditures (excludes power stripping)

Mining Claims Traversed (List in numerical sequence)Mining Claim

Prefix-73

Number

\ S8/X84

Type of Work Performed

Performed on Oaim(s)

Calculation of Expenditure Days Credits

Total ExpendituresTotal

Days Credits

InstructionsTotal Days Credits may be apportioned at the claim holder's choice. Enter number of day* credits per claim selected in columns at right.

Certification Verifying Re

er

Expend. DeysCr.

Mining Ctelm

ledllofaer o- Agent (Signature)ne. u iforTof Work ^

Total number of mining cleims covered by this report of work.

l hereby certify that l have a personal and intimate knowledge of the facts set forth in the Report of Work annexed hc-eio. having performed the work or witnessed same during and^'or after ITS completion ant' 1'ie r.nnexec' repc'f is true.

Name ana Postal Address o* Person can if v "g

JDate Certified Brt h v

Ministry o(NaturalResources

Ontario

Report of Work

Geochemical and Expenditures!

J-

r~\P f- 1 1 1.

Instructions-

Note:-

The

Please type O' nnnt. If number o! mining claims traversed exceed* space on this form, attach a list. Only days uedits calculated in the "Expenditures" section may be entered in the "Expend Days C'." columns. Do not use shaded areas below.

Type Of Survey(s) (Township or Arc*

Claim HoldarU)

Address

//0or- 3*7 #4 Y

Prospector's Licence No.

Survey Company

J'EIZO'&ATData of Survay (from A to) Total Miles of lin* Cut

Name and Addraai of Author (of Gao-Technical-Technical report)

vr; iy rrt "7*1 AC* . "Do jo //iCredits Requested per Each Claim in Columns at rightSpecial Provisions

For first survey:Enter 40 days. (This includes line cutting)

For each additional survey: using the tame grid:

Enter 20 days Mbr each)

Man Days

Oomptete i reverse tide and enter totaifej 'here

Airborne Credits

Note: Special provisions credits do not apply to Airborne Surveys.

O oopli yviCB 1

- Elactromagnatic

- Magnatomatar

- Radiorrwtric

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Geological

Gaochatnical

Gaophyslcal

* Eladrofnaajnatlc

- Magnatomatar

- Radiomatric

-Othar

Gaoloaical

Gaochamical

Electromagnetic

Magnetometer

Day* par Claim

Day* par Claim

Day* par Claim

*#

-4*P^3*

Expenditures (excludes power stripping)

Mining Claims Traversed (List in numerical sequence)

Typa of Work Performed

Performed on Claim(t)

Calculation of Expenditure Days Credit*

Total Expenditure*Total

Days Credits

J3-LZIInstruction*

Total Days Credits may b* apportioned at the claim holder's choice. Enter number of days credits per claim selected in columns at right.

number of mining claims covered by this report of work.

Recorded Holder or Agent (Siflnature)

Certificatifen Verifying Rfjpo?rbf Workl hereby certify that l have a personal and intimate knowledge o '- t he facts set forih m the Report c* Work annexed t or witnessed same during and/or after its completion and the innexec reooM is true

rjerforrned the work

Name and Postal Address of Person Certify "g

lDate O'!

ZO•jj en

l

Ontario

Ministry of Natural Resources

GEOPHYSICAL - GEOLOGICAL - GEOCHEMICAL TECHNICAL DATA STATEMENT

File.

TO BE ATTACHED AS AN APPENDIX TO TECHNICAL REPORTFACTS SHOWN HERE NEED NOT BE REPEATED IN REPORT

TECHNICAL REPORT MUST CONTAIN INTERPRETATION. CONCLUSIONS ETC.

Type of Survey(s). Township or Area. Claim Holder(s)—

-Airborne Electromagnetic Magnetic VLF

Rous Lake

Stanley G. Hawkins

Leon F. Laprairie

Survey Company. Author of Report . Address of

Aerodat Limited

Fenton Scottl? Malabar Place, Don Hills

Covering Dates of Survey.

Total Miles of Line Cut—

April, Kay 1983(Enecutting to office)

55

SPECIAL PROVISIONS CREDITS REQUESTED

ENTER 40 days (includes line cutting) for first survey.ENTER 20 days for each additional survey using same grid.

Geophysical—Electromagnetic.—Magnetometer.—Radiometric———Other_______

DAYS perdaim

Geological.Geochemical.

AIRBORNE CREDITS (Special provnfam en

Magnetometer——^—Electromagnetic.do not apply to airborne surveys)

.VLF.

(Maximum 80~allowe

. SIGNATURE^—^^————Author of Report or Agent

Res. Geol.. .Qualifications.Previous Surveys

File No. Type Date Claim Holder

MINING CLAIMS TRAVERSED List numerically

See Lists Attached

TB 501722 et al

TB 581846 et -l

l

MffiD

TOTAL CLAIMS. 55

837 (5/79)

SELF POTENTIAL

Instrument.——————————————————————————————————————————— Range.Survey Method ———————————————————————————————————————————

'Corrections made.

RADIOMETRIC

Instrument.Values measured.Energy windows (levels)________________________________________ Height of instrument^-—^——^-————^———-—-^^———^^-—Background Count. Size of detector_______________________________________________ Overburden ________________________________________________

(type, depth — include outcrop map)

OTHERS (SEISMIC, DRILL WELL LOGGING ETC.)

Type of survey———————————————————————————————————— Instrument ————————————————————————————————————— Accuracy_______________________________________Parameters measured.

Additional information (for understanding results).

AIRBORNE SURVEYSType of ...r^yfc) Electromagnetic ________ Magnetic ________ VLF-5M ——Instrument(s) ____ Aerodat 3 f reg. _____ Geometrics G-8Q3 Tafaem 2A

(specify for each type of survey)Accuracy _________ 1 ppm _______________ 0.3 Gammas _______ 1& (1 mm

(specify for each type of survey)Aircraft used ______ Aerospatiale A-Star Helicopter —^^—^—————^———Sensor altitude ________ 30 meters _________ 50 meters _________ 30 meters Navigation and flight path recovery m-thod Visual Navigation from air photo mosaics

Flight path recpvery from I-'.ini Ranger radar positioning —^^——-^^——— Aircraft altitude ______________ 60 meters ________ Line Spacing ______ 100 meters Miles flown over total area ________ 1 500 km. __________ Over claims only _____ S S mi l PR.

ining Claims Traversed (List in numerical sequence)Mining Cairn

Prefix

.1 i"rrrii

- ••.•

Number

tt 1 7 Z*

Expend. DaysCr.

Mining ClaimPrefix

^7^ -;U ^

-t-'

Number

Total number of mining claims covered by this report of work.

Expend. OaysCr.

RECEIVED

MINING LANDS SECTION

•T1'-':-*J*

Mining ClaimPrefix

3Number

tt/ S 4- 1.

tt i X 4-8

tt i X 62

tt 1 Z t, C

tt/ #6 8

Expend. DaysCr.

Mining ClaimPrefix Number

Expend. DaysCr.

6 6' "

Total number of mining claims covered by this report of work.

RECEIVED5EP2 O -&

MINING UNOS SECTION

Mm,stryot GeotechnicalrS'^ces Rep"rt ,

Ontano Approval

File

Mining Lands Comments

To: Geophysics

Common tt

[tJApproved P Wish to tee again with correction*

To: Geology - Expenditures

Comments

| Approved [~| Wish to see again with corrections

D

Date Signature

To: Geochemistry

Comments

[~1 Approved D Wish to see again with correctionsDate Signature

j JTo: Mining Lands Section. Room 6462. Whitney Block. (Tel: 5-1380)

1593(81/10)

1983 09 23

307 ft 308

2.5829

Mrs. Audrey HayesMining RecorderMinistry of Natural ResourcesP.O. Box 5000Thunder Bay, OntarioP7C 566

Dear Madam:

We have received reports and maps for an Airborne Geophysical (Electromagnetic and Magnetometer) survey submitted on mining claims IB 581846 et al and TB 581722 et al 1n the Area of Rous Lake.

This material will be examined and assessed and a statement of assessment work credits will be Issued.

Yours very truly,

E.F. AndersonDirectorLand Management Branch

Whitney Block, Room 6450 Queen's Park Toronto, Ontario M7A 1W3 Phone:(416)965-1380

A. Barr:mc

cc: Stanley G. Hawkins, Leon F. LaPralHe Suite 1105 347 Bay Street Toronto, Ontario M5H 2R7

cc: Fenton Scott 17 Malabar Place Don Mills, Ontario M3B 1A4

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SG HAWKINS

ELECTROMAGNETIC PROFILE MAP

COPLANAR

SCALE I/I5.0OO O l K i lorn* t r*

1/2 Mil*

VAERODAT LIMITED

DATE: March-June 1983

N. T. S. No :

MAP

86*00'HELICOPTER ELECTROMAGNETIC SYSTEMCoil Configuration -Coplonar

Separation - 7 metresFrequency -4100 Hz

Mean Sensor Altitude -30 metresHorizontal Positioning-MRS HI radar positioning

pp120 - 80 :

40 O

In-phose

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HEMLO PROJECT

S G HAWKINS

ELECTROMAGNETIC PROFILE MAP

COAXIAL

SCALE I/I5.00O o l K i loma f r*

1/2 Mil*

TAERODAT LIMITED

DATE March-June 1983

N. T. S. No '

MAP

48-45.

86*OO'

ft a

I

AERODAT HEM SYSTEM RESPONSE VERTICAL HALF-PLANE

nry(HI) (r t - Conductance (Siemens)

iOO IN- PHASE (ppm)

HELICOPTER ELECTROMAGNETIC SYSTEMCoil Configuration -Coaxial

Separation - 7 metresFrequency -4500 Hz.

Mean Sensor Altitude -30 metresHorizontal Positioning-MRS m radar positioning

p.pm. 30 i2010-

0

In-phase

Quadrature

42D09NE8071 2.5839 ROUS LAKE 210

\

1/2

HEMLO PROJECT

S G HAWKINS

VLF-EM TOTAL FIELD

SCALE 1/15,000 O

fAERODAT LIMITED

l Kilometre

1/2 Mil*

DATE March-June 1983

N. T S. No

LAX f

SUPFRtO*

4JDB9NE0071 3.5829 ROUS LAKE

86*OO'

VLF-EMInstrument Herz Totem 2AStation^ NAA Cutler, Malne-17.8 kHz.

Mean Sensor Altitude 45 metresHorizontal Positioning MRS UT radar positioning

!0 0Xo

contour interval 2 "/oNOTE.- The total field will usually indicate

a local maximum over the upper edge of a steeply dipping conductor

230

1/2

\l

HEMLO PROJECT

SG HAWKINS

TOTAL MAGNETIC FIELD

SCALE 1/15,000 O l Kilomtrr*

1/2 Mil*

DATE March-June 1983

N. T S. No '

MAP N

MAGNETOMETERInstrument -- Geometrics G-803Mean Sensor Altitude; 45 metresHorizontal Positioning- MRS HI radar positioning

25O gammas.

50 gammas

l O gammas .. contour interval 10 gammas

42D*9NE8e71 a.5829 HOUS LAKE

x"

x

1/2

HEMLO PROJECT

SG HAWKINS

INTERPRETATION

SCALE I /I5.00O O Kilometre

1/2 Mile

March - June 1983

48*45",

Marathon

SUPERIOR

86*OO'

2.5829 ROUS LAKE 250

INTERPRETATION

Interpreted conductive axis within bedrockPossible conductive axis within bedrockProbable cultural conductor