S- 3 /7-2

31C1SNWM08 2.3173 PALMERSTON

REPORT ON

AIRBORNE GEOPHYSICAL SURVEY

IN THE

CROTCH LAKE AREA OF ONTARIO

FOR

AGNES AND JENNIE MINING CO.

BY

KENTING EARTH SCIENCES LIMITED, OTTAWA

PROJECT NO. 79097

010

OTTAWA, CANADA, NOVEMBER 26TH, 1979.

D.M. DARBHA, M.Se., GEOPHYSICIST.

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REPORT ONAIRBORNE GEOPHYSICAL SURVEY

IN THECROTCH LAKE AREA OF ONTARIO

FOR AGNES AND JENNIE MINING CO.

1. INTRODUCTION

This report pertains to the combined airborne radiometric and

magnetic survey carried out in the Crotch Lake area (also called Cross

Lake) of Ontario for Agnes and Jennie Mining Co. The survey was

conducted on November 6th, 1979 by Kenting Earth Sciences Limited

geophysically equipped Britten-Norman Islander aircraft (registration

C-FY2T) based at Ottawa.

A mean terrain clearance of 150 feet was maintained throughout

the survey at an average aircraft speed of 110 miles per hour. Flight

lines were spaced at 1/8 mile intervals and oriented N 20 W.

The geophysical data acquired totalled approximately 90 line

mi les.

The following Kenting personnel were associated with this

project:

N. Fjell

K. Hall

H. Davidson

G. Wes ton

Pilot

Electronic Operator

Navigator

Data Compiler

D. Fitzsimmons - Data Chief

D. M. Darbha Geophysicist

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2. INSTRUMENTATION

A multi-channel differential gamma ray spectrometer (KDSS)

manufactured by Kenting Earth Sciences Limited was employed for this

survey. A technical description of specifications of this unit is

appended to this report. A sensor array of thallium activated sodium

iodide crystals was used providing a detector volume of approximately

1,500 cubic inches. All detectors were held at constant temperature

throughout the survey to minimize drifting in the gain of the photo

multiplier tubes.

The airborne magnetometer was a model G-803 proton precession

instrument manufactured by Geometrics of California.

A Honeywell radar altimeter provided terrain clearance

measurements.

An AS-5 35mm. continuous strip camera recorded the flight

path.

As an aid to navigation, the aircraft was fitted with a Sperry

C-ll gyro stabilized compass and a Bendix doppler navigation system.

A six channel Brush 260 unit recorded four radiometric channels,

the altimeter and magnetic data in analogue form. All of the above

data were recorded digitally on magnetic tape by the KDSS.

The quantities measured, format and scales used on the six

channel analogue recording are as follows, with the chart oriented such

that fiducial numbers increase to the left:

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1p1p-

fe1t.

P1'"-'t- -ttlil

17,.'.,

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Channel

Top of Chart 6

5

4

3

2

1

No. Parameter

Altimeter

Magnetometer

Thorium (Tl-208) 2.42 - 2.82 Mev

Uranium (Bi-214)1.66 - 1.86 Mev

Potassium (K-40)1.36 - 1.56 Mev

Total Count0.4 - 2.82 Mev

All quantities increase upwards. Any chan

format are indicated on the

Analnmjp rAr.orrlirms

records.

Hinital rftr.ordina andllIIlF*

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(lf:- ' :'^H

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Scale

O - 1000 feet

O - 1000 gammas

O - 200 counts/sec.

O - 200 counts/sec.

O - 400 counts/sec.

O - 4000 counts/sec.

numbered fiducial marks every 10 seconds to facilitate correlation.

Digital sampling is at 1.0 second intervals.

3. PRESENTATION OF RESULTS

One plan map sheet at a scale of l Inch to i-mile covers the survey

area. An uncontrolled air photo mosaic provided the base for this map.

The magnetic and radiometric results are each presented on separate map

sheets using the same base.

The magnetic results have been manually levelled, computer

processed and machine contoured using a 25 gamma contour interval where

gradients permit.

The radiometric plan map is a combination of corrected total

count contours and significant anomaly peak values. The anomaly peaks

list the total count, potassium, uranium and thorium values beside each

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anomaly. As well, the uranium to thorium ratio Is indicated by the

degree to which the anomaly symbol is shaded in (see map legend). The

total count contour interval is 200 counts per second and the contours

are computer generated.

The radiometric results have been corrected for atmospheric

background, terrain clearance and Compton scattering.

Atmospheric background readings were determined by flying over

a large body of water at survey altitude before and after the survey flight.

The following average backgrounds (in counts/second) were recorded and used

In the computations:

Flight Total Count Potassium U ran i urn Tho ri urn

1 No Survey

2 271 28 l? 6

All count rates were normalized to an altitude of 150 feet using

the following formula:

-M. HN . N e ^ M

o

Where N is the observed count rate

N is the normalized count rate at 150 feet o

/4. is the attenuation coefficient

H is the elevation difference from 150 feet

The attenuation coefficients (/^ ) used are as listed below:

TOTAL COUNT - 2.0 x 10~ 3

POTASSIUM - 2.3 x 10" 3

URANIUM - 1.7 x 10" 3

THORIUM - 1.7 x 10" 3

The Compton scattering coefficients were determined prior to the

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survey using the special pads set up for this purpose by the Geological

Survey of Canada at the Ottawa International Airport. The following

results were obtained:

ot - 0.48

[i -0.52

V " o- 80

S.

k. GEOLOGY

M The geological circular no. 12 by Ontario Department of Mines,

entitled "Geological notes for Maps Nos. 2053 and 205** Madoc-Gananoque

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Area by D.F. Hewitt, 19&A" was used as a reference In this report. The

survey area lies in the north-east corner of the map 2053 (scale l" - 2

miles). The Precambrian Plutonic rocks are predominant in the area, with

Cross'Lake gneiss on the west side in contact with the granitic gneiss,in

the southern section. Marble and Lime Silicate rocks are reported in the

central portions of the area along with the meta-volcanic rocks. Map 2053

also shows two lineaments (or faults) running approximately E-W in the area.

5. DISCUSSION OF RESULTS

The main magnetic picture of the area shows low magnetic gradients,

Indicative of weakly magnetic granite gneisses predominant in the area.

On the west side of the area, the Cross Lake gneiss appears to be least magnetic

of all lithological units. N-E magnetic trend dominates the area. A

N-S trend in the central section appears to be associated with the formations l

boundary between two types of Precambrian Plutonic rocks. The most striking

magnetic feature in the northern part of the area, striking E-W, indicates

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high intensity magnetic units. This linear magnetic feature can be

interpreted to be due to intrusives. We can also observe the reported

(Map 2053) lineament (such as a fault), in NW - SE direction, intersecting

the above mentioned magnetic feature.

The total count radiometric map shows specific contour trends in

NE to N direction conforming with the magnetic and geological (reported)

trends. In the northern corner of the survey area the total count

contour trends seem to be associated with the combined structural and

lithological features.

All the high total count areas contain excellent contributions

from Uranium sources. The survey was very successful in detecting a

large number of top priority Uranium prospects within the area. Alli anomalies with high uranium count rates and/or high Uranium to Thorium

ratios should be considered significant. The strongest airborne

Uranium responses were observed in the marked Zones l, 2 and 3. Zones

4 and 5 contain good uranium signatures, probably along the intrusive

contact between Precambrian Plutonic and Metavolcanics. The highest total

counts were recorded at the anomaly 18A, with excellent Uranium content.

The high Uranium signatures ^SOcps) noted in the area appear similar to those

observed in the Bancroft Uranium district. The anomalous zones l, 2 and 3

appear to correlate well with the magnetic features such as appreciable

changes in the magnetic gradients, representative of formational contacts and

fault zones.

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6. RECOMMENDATIONS AND CONCLUSIONS

Although many good uranium anomalies were detected by the

airborne survey, these should be carefully analyzed to determine the

significance of the prospects. A detailed ground follow up is

recommended In the Zones l - 5 to assess and delineate the Uranium

mineralisation. In areas of special interest, the magnetic data used in

conjunction with the detailed geological knowledge should provide

Information on the important lithological and structural associations

of Uranium mineralisation.

Respectfully submitted,

OTTAWA, Canada, D.M. Darbha, M.Se., November 26, 1979- Geophysicist.

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430533 — ——— -l-i 430530521237 '—.- - -

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COUNTY OF FRONTENAC

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527175 '527180 . l- J EO EO 1*13649

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5272

Y l f -INCHs4OCHAINS

ntario

Ministry t

GEOPHYSICAL - G TECHNICAI

File.

PALMERSTON•—"—~^— 3ici5Kiweeea TO BE ATTACHED AS A!

FACTS SHOWN HERE NEED NOT BE REPEATED IN REPORT TECHNICAL REPORT MUST CONTAIN INTERPRETATION, CONCLUSIONS ETC.

900

Type of Survey (s) ftirbOrng. fZnrl \

Township or Area .4A ero

Claim Holder(s) C l \ *\ .-y^ k P koftddeit

Survey Company K

Author of Report Address nf Author 3 &O

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Covering Dates of Survey

Total Miles of Line Cut

863 .(linecutting to office)

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 per claim

Geological.Geochemical.

AIRBORNE CREDITS (Special provision credits do not apply to airborne lurveyi)

Magnetometer

/* f

Electromagnetic Radiometric(enter days per claim)

SIGNATURE

Res. Geol.. .QualificationsPrevious Surveys

File No. Type Date Claim Holder

MINING CLAIMS TRAVERSED List numerically

,,(prefix) (number)

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fi!

TOTAL ri. A IMS 21 -r 31 c ^Z

837 (5/79)

GEOPHYSICAL TECHNICAL DATA

GROUND SURVEYS — If more than one survey, specify data for each type of survey

Number of Stations. Station interval -—— Profile scale ————

.Number of Readings

.Line spacing —.—.—

Contour interval.

uhttzC

Instrument.Accuracy — Scale constant. Diurnal correction method.Base Station check-in interval (hours). Base Station location and value ___

ELECTROMAGNETIC P.nil rrmfifniratinn

Toil separation

Amirary

Method: Q Fixed transmitter D Shoot back CU In lineFreniienry

(specify V.L.F. station)

D Parallel line

Parameters measured.

iO

Instrument.Scale constantCorrections made.

Base station value and location.

Elevation accuracy.

Instrument ^—^————— Method CD Time Domain Parameters — On time ———

- Off time -——— Delay time —-——

— Integration time.

Frequency Domain Frequency _____Range .^_^__^__

Power.Electrode array — Electrode spacing . Type of electrode

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ft

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f SELF POTENTIALInstrument^^——————————^——-———-———-———————————— Range.Survey Method .—--—————--———.—^^————————-————-—————-————

Corrections made.

RADIOMETRICInstrument——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 SURVEYS Type of survey(s)-.. nInstrument(s) V1/K) J **-*** ay Q*cWvcr

u (specify for each type of survey)Amirary Pflfr-tor KCScMJCVS i < V'S Ve S yftW. -' > \?^io_____________O'/ ?*

(specify for each type of survey) "lAircraft n^H fefVH*X-f\)ori^vs^ J ctcv/ic/ry ( fe^^ati^ -ft- C-JP/^T/Sensor alHtnHp /^Q - ZOO

Navigation and flight path recovery method. S "

Aircraft altitude___(SO - 2OO '________________Line Spacing_____/P A^il^ Miles flown over total area____"O_________________Over claims only " ^ ^ /)QJ

GEOCHEMICAL SURVEY - PROCEDURE RECORD

Numbers of claims from which samples taken.

Total Number of Samples. Type of Sample.

(Nature of Material) Average Sample Weight———————

Method of Collection————————

Soil Horizon Sampled. Horizon Development. Sample Depth———— Terrain———,—————

Drainage Development——————————— Estimated Range of Overburden Thickness.

ANALYTICAL METHODSValues expressed in: per cent

p. p. m. p. p. b.

D O d

Cu, Pb, Zn, Ni, Co, Ag, Mo, As,-{circle)

Others—-—-—.————---—-..—.-—--—-.—-—Field Analysis (.

Extraction Method. Analytical Method- Reagents Used——

Field Laboratory AnalysisNo. ——————^——

SAMPLE PREPARATION(Includes drying, screening, crushing, ashing)

Mesh size of fraction used for analysis-———

Extraction Method. Analytical Method - Reagents Used—.—

Commercial Laboratory (- Name of Laboratory— Extraction Method—— Analytical Method ——Reagents Used—,———

.tests)

.tests)

-tests)

GeneraL General.

Clarendon

32

Clarendon Twp. (M.77)

IV V..-' VI

31

30

28

26

25

24

23

22

Palmerston Twp.(M.I39)

NALJfl SLiBM COBl E 9/9 PILF "2^76 l

-f 55.75ac

5575oc

5/ George

- vy l 102.5oc.

102.Sac, l

Hinchinbrooke Twp.(M.104)

THE TOWNSHIPOF

OLDENCOUNTY OF FRONTENAC

EASTERN ONTARIO MINING DIVISION

SCALD I-INC^4QCHA]NSLEGEND

PATENTED LAND

CROWN LAND SALE LEASELOCATED LAND LICENSE OF OCCUPATION

MINING RIGHTS ONLY

SURFACE RIGHTS ONLY

ROADS

IMPROVED ROADSKINGS HIGHWAYSRAILWAYS

POWER LINESMARSH OR MUSKEG

MINESCANCELLEDTRAILSPATENTED for S.RO

NOTES This Map Is Not To Be UsedFOR SURVEY PURPOSES

Let And Concession Lines Shown Hereon Are

Projected From The Best Information Available,

But Their True Position Is Not Guaranteed.

For Official Survey Purposes Consult The

Original Survey Plans And Field Notes Of Records In the Ministry of Natural Resources

400 surface rights reservation along the shores of all lakes and rivers

The Acreages Shown Are The Amounts

That Were Patented And Do Not Necessarily Represent The True Surveyed Area Of The Parcel.

RKSERVES

Crown Reserve File .36526

withdrawn from staking " 7(2^6

Area* wit^Hnwn from staking under Section -3 of l he Mining Act. * - .j' t - . r *?, * s r. K* t*.

,-IHI- .) File n.-* 0 P'*pos'tion

OF

OEC201979

SURVEYS AND MAPPING!

Bedford Twp.( M.52)

PLAN NO.-M.I36ONTARIO

31Ct5NWB0*8 2 .3172 PALMERSTON

MINISTRY OF NATURAL RESOURCESSURVEYS AND MAPPING BRANCH

South Canonto Twp. (M.68)

CROSS

9^ -^^~~^*^~* ^frferr^^ ,\. i

s.'R O Rapids 460126

Millers \ L oke460123

460260 46026 l 460278 \ f

460291 l 46D29S

LAKE

r " T * H

430538 4 ' 3 F 5 -l L" j /4136

81, 5271 l 8

l Jtl 5 27I22W 527119 5 2 7 '^ t.

^-0~ . E0~ EO 1EO

V V 521228 X 1 521235V

\ Dlden Twp.lM. 1 36) Oso Twp (M. 138)

Q.

c o > o -J

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O.CC/)

THE TOWNSHIP OF

PALMERSTON

COUNTY OF FRONTENAC

E ASTERN ONTARIO MINING DIVISION

SCALE' 1-INCH * 40 CHAINS

LEGEND

PATENTED LAND

CROWN LAND SALELEASES

LOCATED LAND

LICENSE OF OCCUPATION

MINING RIGHTS ONLY

SURFACE RIGHTS ONLYROADS

IMPROVED ROADS

KING'S HIGHWAYS

RAILWAYS

POWER LINESMARSH OR MUSKEGMINESCANCELLEDPATENTED S.R.O.

C. S. O

Loc.

L.O.

M.R.O.

S, R.O

c.e

NOTES

ThisMap Is Not To Be Used FOR SURVEY PURPOSES.

Lot And Concession Lines Shown Hereon Are Projected From The Best Information Available. Bul Their True Position Is Not Guaranteed. For Official Survey Purposes Consult The Original Survey Plans And ri5ld Notes Of Records In the Ministry of Natural Resources

400 surface rights reservation a lor g the shores of a.! lakes and rivers

"[he A^rsages Shown Are The Amounr That Were Patented And Do Not Necessarily Represent The True Surveyed Area Of The Parcel

Flooding Rights to 1105 elevation of

Cross Lake. File I26il3

RESERVES

(5) S R.O. Reserved for public use .Fiie5i9ia

(S) M N R Reserve

(S) SRO Reserved sect39(d)of Mining Act (R.S.o'60)

060201979

SURVEYS AND MAPPING

PLAN NO-M. |39

31C15N*W68 2.3172 PALMERSTON S10

ONTARKJ

MINISTRY OF NATURAL RESOURCESSURVEYS AND MAPPING BRANCH

(APPROX.)

HORIZONTAL CONTROL . . . . . . . . .BASED ON

PHOTO LAYDOWN

LEGEND

25 GAMMA CONTOUR

100 GAMMA CONTOUR.

500 GAMMA CONTOUR .

MAGNETIC LOW . . . .

CONTOUR INTERVAL . . . .

MEAN TERRAIN CLEARANCE

TRAVERSE INTERVAL . . . . .

. . . 25 GAMMA

150-200 FEET

. . .660 FEET

AIRBORNE M AGNETOMETER S URVEY

CROTCH LAKE AREAONTARIO

AGNES and JENNIE MINING CO.

SCALE l " : 1320'

KENTING EARTH SCIENCES L l WITED , OT T AWA

31C15NW000B 2.3172 PALMERSTON 221

K E.S.L. 79097

(APPROX.)

HORIZONTAL CONTROL . . . . . . . . .BASED ON

PHOTO LAYDOWN

LEGEND

VALUES CORRECTED FOR

ATMOSPHERIC BACKGROUND

ALTITUDE NORMALIZED TO 150 FEET

TERRAIN CLEARANCE

CCMPTON E FFECT

TC K U

Th

U Th

> 15

RATIO

MEAN TERRAIN CLEARANCE. . . .150-200 FEET

TRAVERSE INTERVAL . . . . . . . . . . .660 FEET

( TOTAL COUNT CONTOUR )

AIRBORNE RADIOMETRIC SURVEY

CROTCH LAKE AREAONTARIO

AGNES and JENNIE MINING CO.

SCALE l " ^ 1320'

KENTING EARTH SCIENCES LIMITED , OTTAWA , ^

31CI5NK0808 2 .3172 PALMERSTON

K.E.S.L. 79097