hitebirch lake projects section - ontario · 2017. 1. 17. · 52h13se8024 3.974 whitebirch lake 010...

52H13SE8024 3 .974 WHITEBIRCH LAKE 010

REPORT ON AN

AIRBORNE GEOPHYSICAL SURVEY (ELECTROMAGNETIC)

IN THE

TOMMYHOW LAKE AREA

OF WESTERN ONTARIO

FOR

LABRADOR EXPLORATION (Ontario) LIMITED

CONDUCTED BY

GEOTERREX LIMITED

PROJECT 84-103

PROJECTS SECTION

OTTAWA, Ontario,

June, 1972.

P. Norgaard, P.Eng., Reva Dowse, B.A., Don McQueen, M.Se./ GEOPHYSICISTS

opoterrex

1.

On May 13, 1972 Geoterrex Limited carried out an airborne

geophysical survey (combined electromagnetic^ rfldLojnetric and

magnetic) in the Tommyhow Lake area of Western Ontario for

Labrador Exploration (Ontario) Limited.

An Otter aircraft, with Canadian registration CF-AYR was

used throughout the survey, and it was equipped with an Jn-Phase/

Out-of-Phase electromagrietic^sysj^ejn operating at 3201^ a

iifi-rjLprmance proton resonance magnetometjejEL, a DGRS 1000

gornnia Roy spectrometer and associated survey equipment. (See

Appendix B for detailed description of equipment/ compilation

procedures and method of control),

The survey block is centred around Lot. 49 50N and Long.

89 45 W. Lines were fLowrLJJ-20 W with Y8 mile spacing and also

E-W at intervals of j mile. A total QJLJJLLJUjTe^miJLes was

compiled c.overing. the c l a .vnL^flJiQjj D out cf a total of 260 miles

flown.

The purpose of the survey was to detect bedrock conductors

which might reflect the presence of base metal sulphides/ and

to suggest recommendations for a further exploration program by

evaluating prospective conductive zones from a geophysical point

of view.

Dioterrex

2.

All detected electromagnetic responses are individually

listed by line number and letter designation in Appendix A

and plotted on a photo transparency map at a scale of l inch s

1/320 feet. The intensity of the anomaly is shown, along with

the flying altitude and any magnetic association.

Prospective conductive zones are outlined and numbered/

and discussed in detail in Section V.

For discussion of radiometric and magnetic results/ see

separate reports.

geoterrex

3.

II. PERSONNEL

The personnel involved in this survey include the

following:

A. Fi eld Op e r a t i on

Pilot

Navigator

Operators

A. Bratteng, Ottawa

R. Bolivar, Ottawa

B. Hind, OttawaS. Harrison, OttawaB. Kramer, Ottawa

Data Compilers C. Taggart, OttawaL. Matthews, Ottawa

Aircroft Engineer L. Fougere, Ottawa

Geophysicist D. McQueen, Ottawa.

B. O f f i c e C o tnp i l a j i on

Data D. Sarazin, Ottawa

Drafting M. Dostaler, Ottawa

Geophysics R. Dowse, OttawaD. Wagg, ManotickD. McQueen, Ottawa

geoterrex

t

Q III. CLAIMS COVERED - 173

251859

2628 95*

263124

287709

288279

288301

288552

288803

302543

304322

309216

335996

A 336022

~ 262904

- 263133

- 287728

- 288292

- 288314

- 238553

- 288822

- 302551

- 304333

- 309276

- 335999

~ 33602*

4.

*

Mileage within claims - 151 ' Total mileage - 260

incl.

incl.

incl.

incl.

incl.

incl.

incl.

incl.

incl.

incl ,

incl. ( ;- - These claims were staked since the

incl. ) surveys.were perf ormed-12 dlaimastaked May 19,Airborne geophysical oertifioatebeing applied for.

3 2,'

32.

i*u

OROterre

5.

IV. GENERAL

A. Geology

Reference: Ontario Dept. of Mines and Northern Affairs,

Map 2199.

geoterrex

6.

B

Five conductive zones have been identified and mapped

in the survey area as well as a few isolated, single line

responses. The zones have been evaluated obiectiveJLy^-QiLJL

of a maximum of 100 points by assigning a predetermined

numerical value to relevant geophysical criteria such as

intensity, apparent conductivity, magnetic association, relative

isolation, strike length, etc. (See Appendix C for rating

system). A final subjective evaluation based on - 15 points

is included in some cases when anomaly character seems particularly

significant. The total rating is then used to group the

zone into a general category which may facilitate the planning

of the followup programme to some extent.

The ratings are more or less grouped as follows:

Rating 65 - 100 - Category A

Rating 40 ~ 64 - Category B

Rating less than 40 - Category C

Category A includes zones recommended for followup

on a high priority basis. These indicate probable bedrock

sources with good to excellent potential for sulphide

mineralization. Conductors in Category B have probable fair

potential and would be investigated in any relatively

complete followup program. The final grouu, Category C, is

comprised of doubtful bedrock zones (including probable

surficial and probable cultural sources), or those weaker

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7.

zones which would not normally merit further consideration

unless local geology was favourable. Conductors classified

as B~ are also rather inconclusive geophysical prospects.

Individual anomalies not grouped into zones are

also discussed and followup is recommended according to

merit.

geoterrex

8,

V. DISCUSSION OF CONDUCTIVE ZONES

Zon^JT-l Anomalies 26-B through 29-A Rating 50Category B

These EM anomalies are quite well developed with fair to

good intensities. They reflect a highly conductive source

material probably of magnetic origin (120-300 gammas), and

both the EM and directly associated magnetic response

exhibits some variability of interest. The zone could possibly

relate to some easterly striking structural feature, and

investigation is recommended near anomaly 29-C, which faintly

suggests dual character, or possibly near anomaly 27-C,

Although this latter response is partially obscured by an equip

ment check (normal procedure at the end of a flight line), it

seems to reflect, rather good EM character as well as slightly

enhanced intensity.

In view of the undetermined strike length, a medium priority

rating seems advisable.

Zone ̂ -2 Anomalies 56-A through 13-A Rating 60Category B

This zone lies on the same horizon as zone T-3,

suggecting sporadic development along some easterly trending

structural feature and possibly some common origin. The EM

response ranges in intensity from weak to very good with

geoterrex

9.

excellent conductivity reflected throughout/ and the directly

coincident magnetic anomalies are also reasonably encouraging

(100-960 fi ) , particularly in the western section in the

vicinity of the strongest response, anomaly 5-A. Some

enhancement could be reflected in this area, and further

work might be considered with medium or medium to high priority,

Zone T-3 Anomalies 21-A through 28-A Rating 52Category B

This conductive zone is quite comparable geophysically

to zone T-2. The same range of intensities is indicated (fair

to very good), and the same consistently high conductivity is

apparent. Direct magnetic correlations are also indicated for the

most part, although some significant offsetting seems to be

suggested to the east (lines 25 and 27). The magnetic zone

ranges in amplitude from 50 - 400 gammas, but the apparent

variability is only slight and not really impressive. Investi

gation seems warranted with medium priority, and further work

could be centred near anomalies 23-A and/or 25-B, The former

was selected on the basis of enhanced amplitude accompanied

by good magnetic association (direct 400 gammas), while the latter

suggests some width enhancement, possibly in the proximity of

a cross-cutting structural phenomena.

OROterrex

10.

Zone T-4 Anomalies 51-A, 52-A and 53-A Rating 42Category B

Anomalies 51-A and 52-A are very weak, poorly defined

responses with little apparent potential, but on the basis

of anomaly 53-A some further work is definitely warranted.

This is a very favorable looking EM anomaly with very good

intensity lying slightly offset from a prominent magnetic

marker (1300 gammas). A source material with excellent apparent

conductivity seems to be indicated and further work to

determine the full strike length is recommended with medium

priority.

Zone T 5 Anomalies 54-B and 55-A Rating 41

This conductive zone begins at the end of the survey

grid and again interpretation is quite hampered by the

unknown strike length. The anomalies exhibit only fair intensity

but seem to relate in some way to a deeper looking magnetic

marker of 100 gammas. The apparent conductivity is excellent

and followup is suggested with low to medium priority. Slight

preference is given to anomaly 54-B which seems to exhibit

slightly better resolution.

geoterrex

11,

tAdditional Anomalies

; In addition to the zones discussed above a few single-

line and very weak, inconclusive EM responses were also

identified. These are briefly discussed below and may warrant

some consideration if local geology is encouraging.

AnojKily 12-A - This anomaly is well developed with very good

EM character. It has fair or possibly even good intensity,

and it is directly associated with an interesting magnetic

marker of 700 gammas. Data is relatively incomplete in this

area at the extreme end of the flight lines, but the magnetic

data leaves some hope for a good prospect with fairly good

strike length. The magnetic marked is not confined to one

flight line but it does not appear to exceed 7-3/4 of a mile.

Medium priority might be considered.

Anomaly 2,2-8. - This anomaly is exceedingly weak and

definitely a suspect bedrock response. It reflects only poor

apparent conductivity and would be of little or no interest

except for the apparent magnetic association (20 - 180 gammas?).

A surficial conductor could well be indicated and only very

low priority should be considered.

geoterrex

12.

Anorcali e s 27 -B d ,28-^AA. - These anomalies are also very weak

with poor apparent potential. They seem to suggest very good

apparent conductivity but their poor character and lack of

magnetic support does not seem encouraging. A culture check

should probably precede other work and only low priority seems

warranted. There is no definite evidence of man-made features on

the tracking film.

A n o m q ly j)4j" A ~ This is a very weak and poorly defined response

with definite suspect character. It could be attributable to

some aircraft fluctuation or possibly to some surface feature,

(An inconclusive linear marker was noted on the film) and

followup is not recommended. There is no encouragement from

magnetics,

.^ejs^ 64-At a n.d. jS4~JB - These are very weak quadrature

responses coincident with magnetic peaks of moderate amplitude

(220 - 290 gammas). Some permeability effect of interest

could well be reflected by the slight level change of the in-

phase/ but it seems quite probable that only a zone of

surficial conductivity is reflected. The apparent conductivity is

poor and only a very low priority check is suggested.

geoterrex

13.

V. CONCLUSIONS

Five conductive zones and several single line

anomalies have been identified, mapped and discussed in

the survey area. No top rated targets were identified

but there are one or two prospects with comparatively

short strike lengths and encouraging EM and magnetic characte

ristics which exhibit some promise from a geophysical point

of view.

The following list summarizes those zones and

single line anomalies recommended for followup.

Zie

T-l

T-2

T-3

T-4

T- 5

Anomaly 12-A

Area of I nye st i g a t ior\r

Anomaly

27-C and 29-B

5-A

23-A and/or 25-B

53.-A

54-B

Priority

medium

medium

medium

low to medium

low to medium

medium

submitted,

'. Norgaard, P.Eng.,

R.K. Dowse, B.A.

X^^?L- AJo~t**4~z~s D.J. McQueen,^M.Sc.

ORpterrex

GEOTERREX LIMITED ANOMALY SHEET NO.

84-103 -

labrador Exploration (Ontario) Limited, Tommyhow Lake Sioux Lookout

ANOMALY

5 A

6 A

7 A

8 A

9 A

10 A1010

12 A

1313 A

21 A21

22 A22

23 A

24 A

25 A25 B

26 A26 B

9

i

FIDUCIALS

018.51/72

027.22/47

029.60/75

039.43/68

041.93/04?

051.15/33047.80048.29

063.40/60

073.80074.25/41

115.67/89116.48

123.10/30122.42

125.37/12*

132. 8 3/1 3C

135.92/13*136.1.1/31

142.51/70139.15/35

IN-PKASE.QIMD.

300/60

lOO/-

120/10

140/-

.15 220 A

40/-X

x

60/20

xSO/-

170/-x

140Ax

.09 230A

. 01 100 A

.11 140 A60/-

SO/-70/40

ALTITUDE

145

160

160

165

150

150

165

150'

160

150

130

160

140140

135210 1

MAGNETICS

Di r. 800#

Di r? 950/

Di r. 160#

Di r. ISO/

Di r. 300 H

Di r. 100/

Di r? 7002f

Di r. 220/

narrov/ 60^

Di r. 230/

i

Di r. 400#

Dir. 150^

S. Edge 240#S. Flank 260jf

Dir? 70/on 300/

RATE

2A

3A

3A

2A

2A

3A

3A

x

2A

3A

2A

3A

3B.3B

3A3A

COMMENTS

Trace IP, No wag.Trace IP, Ross* mag*

Outside survey area

Trace IP, * 250Jweak d questionable

Hag* slightly offseTrace IP, Poss. mag.

Trace OP, S, flank rv

off grid, not plottc

geoterrex


84-103 -Labrador Exploration (Ontario) Limited, TCMhYHQW LAKE SI CUK LOCKOUT

ANOMALY

27 Aec

20 AAA

B

29 A

36

0 3?

51 A

02- A

53 A

54 AB

55 A

56 AB

50 A

59 A

A 60 A

64 A

B

FIDUCIALS

145. 1)6/76-146.02/471 f o rv;-*1 X i /,jlAv}. /w/ A**-

l 5?. O?/?155*06/25149.70/S5

157,4/7

133.4/184

133. S5

235*90/20

240.44/75

241.70/9*

?49.tf5/^250.&7/CC

250.7/fcM

r*7.rvU x?-/ * /-s /r?*;..-V* "i v.-/' * ; *

.., , * r, r / r

Ott.65/*

?28,BC-A\

301.17/3C

O A A fn /l' v;'.-sJ* ' J./ v'-

IN-PHASE.QUAD.

70/40. coA

M7 120/;

.' 70A40/-7oA

60/00'

a

x

â.o 20/G

40A

J.70A

0,OS 40AsoA

.05 70/30

.//,o4GA

i h/r-'O-

7V-

1 J* If'*, y

-/so

a* 05 M/4-C

ALTITUDE

1 00if b

0 195

175MO*

175

) 161

18f

170

J 75205

185 1

.105'140

155

t r. 5

1S5

165

'

MAGNETICS

N Side 60#Poes* slight?.DI r, 230Jf

Di r. 50|nil.

Poea. I20/

Dlr* 200|?

DirV 28-Ojf

Po*ft* GOO^

M. flonk JL500]f

nil.on bsoad 100 J?

or* brood 100/

"Di r. 1300|nil.

Uir. 7CO|

Pi r. 160/

Dire ICO/

Di*-. ,220|

Dir. 2901

RATE

30K

2A

3Ax3A

x

K

21

x31

3C

O/K

H

3A

3A

x

COMMENTS

very cuspoctIHiteido eiwrvêy a3f c

*Si EH roepon&o obacurby E quip*

ra t ho v w oaknarrower **jg?

duol? port direct tsctr

Trcso IP?

Ti'OCO XP, Ho BOQt

;Wook, qâtionoblo

poorly ohopedjr ouislsurvey e rea

Vg^ questionable

fos.ibl* dlMCt IN:.

broodoc CP?

Poor 3

dual, ttoctk

Vozy weok d qw^cii-'able* pipaiû.


64*103Lpbrodor Exploration (Ontario) Limited, TC11MYHOW LAKE SXOUX LOOKOUT

ANOMALY

70 A

.

FIDUCIALS IN-PHASE.QUAD. ALTITUDE

195

MAGNETICS

Di r? ?aoj

RATE

t** &A

COMMENTS

Cut s id© survey ci ir® o ••only f di sr EH

g&oterrex

ntario

Ministry ofNorthern Developmentand Mines

MOTE TO

rf AS

O r^e M i*)iSTiy

'M ̂ 1*112- ,

SUi ^ftSI-f tSH I6o6 LAl^E CuAiM

By

Cu\e tAT

fop. iT

R. C.

APPENDIX "B"

Following is a description of equipment and procedures used during this airborne geophysical survey.

A. EQUIPMENT

1) Aircraft;

The aircraft is a .deHavilland Otter DHC-3 with Canadian registration CF-AYR. This aircraft is a single engine, slow speed, high performance type with a gross weight of 8,000 Ibs. The aircraft may be equipped with wheels, skis, or floats, as required. ôritio.ls^rêj^siDeeolis^Ôinilesper hour,

2) Electronic gn etometer;

The electromagnetic unit is a Rio Tinto ^vpe. measuring In-Phase and Out-of-PJiQ^^ cjLinpjmejits of the secondary field at a frequency of 320 cycjês per second. The unit was de- si gne'T'^na'D'uiTrDiyGeoterrexTaridcoTrTes Serial #1.

A transmitter generates a closely controlled sine wave of 320 cps which is amplified and fed to a transmitting coil mounted on the starboard wing-tip. This coil is iron cored and has vertical windings, with coil axis in the direction of flight. The circulating coil power is some 5000 volt amperes.

A receiving coil is mounted on the port wing, co-planar with, and 62 feet from, the transmitting coil. The voltage developed in the receiver coil due to the transmitted field is some 300 millivolts. In the absence of external conduc tors, this voltage is cancelled by a reference voltage de rived directly from the transmitter voltage.

When the aircraft comes within range of a conductor, the normal (or primary) field is changed by a secondary field, and the resultant voltage at the receiver coil is amplified and passed on to the EM receiver in the aircraft. This signal is filtered and split into one component in-phase and one component out-of-phase with reference to the transmitter voltage. The signals are then passed through phase-sensitive detectors where their amplitudes may be read on meters, or

ggoterrex

2.

recorded on a chart. A time constant of 2.0 seconds is used for the recording of these responses. A system of calibra tion is included so that amplitude of responses (anomalies) may be determined in "parts per million" of the primary receiver coil voltage prior to cancellation. Noise level of the system due to movement of the metal aircraft within the EM field is normally 50 parts per million or less. Signifi cant conductors depending on distance and size, will produce anomalies of more than 50 parts per million.

The system is equipped with a third independent channel which may be used to measure spurious electrical noise (independent of EM noise) at any selected frequency. It is frequently used to display a second in-phase response at a time constant of 0.6 seconds which enables improved resolution for comparison with the normal responses.

An accelerometer is also installed and the output recorded on the 8-channel recorder. This indicates vertical motion of the aircraft and enables discarding of false anomalies which could result from aircraft flexure.

Calibration marks are displayed on the eight-channel chart, and are approximately 15 millimeters for 200 parts per million.

Any anomalies noted are listed in Appendix A of this report, indicating position, (fiducial number on the path recovery camera), amplitudes, aircraft altitude, magnetic relationship if any, relative anomaly rating, and comments which may be of significance.

The anomalies are then plotted on the base map in coded form, according to the legend accompanying this Appendix. Anomaly groups which reflect probable ground conductors are circled and numbered. These are described and discussed in the report in the context of geophysical and where possible, geological significance.

3) Magnetometer:

The magnetometer used is a Geometries Model G-803 Proton Resonance. y^e incorporating a High Performance option.

g&oterrex

3.

Recording times are variable, from three times per second to once per 2 seconds, with respective Jêjn|s^tivitiegH||ofÎ^

once per second with a sensitivity of 1 gamma*

The sensing head is a toroidal coil immersed in a special hydrocarbon fluid and mounted beneath the port wing.

The magnetometer is a digital readout unit and output is used to drive a paper recorder (Hewlett Packard Model 5050-6). In addition analogue outputs are fed to the eight- channel recorder for direct comparison with the electro magnetic results, and to a Hewlett-Packard Model 680 - six inch rectalinear strip recorder.

Full scale deflection usually used in mineral surveys is 1000 gammas although other sensitivities are available. Automatic stepping of the full scale analogue deflection is incorporated. Recordings made on the paper *ape are the values of the total field intensity.

Contouring of results is accomplished as desired.

4) Spectrometer;

An ̂ (^îiai'iiumDGRSjÔ^ ̂sjêctromtêî s optionally carried ~bn the Otter, along with a sensing head containing either three 6" x 4" Sodium Iodide crystals, or a single 8" x 4" crystal.

This is a ̂ SfmS^&mSS^l^ d ifferential gamma-ray unit ^neasurina energy levels of potassium 4,fl, h.^mM+h 91*, Thallium 208 and total count.

Time constants and full scale ranges are variable and are selected to suit the conditions and background of the survey area.

Depending on requirements of the survey, one or more channels may be recorded on the eight channel recorder.

Data presentation, if required, is usually in the form of plotted anomalies showing channel intensities and aircraft altitude. Contour maps of one or more channels may be pro duced in special circumstances.

gftoterrex

5) Altimeter;

The altimeter is a GAR Model 10 wide band radar type. One unit is carried on each wing. The output from the alti meter recorded on the eight-channel recorder. The recording is linear and normally covers from 50 feet to 300 feet, or 25 feet per major division.

6) Camera;

The camera used for path recovery is a Hulcher contin uous strip 35 millimeter type. It can accommodate 400 ft. lengths of film, good for some 250 line miles of survey. It is fitted with a special wide angle lens for low level work.

Fiducial numbers and markers are impressed on the film and controlled by the intervalometer.

7) Intervalometer;

This is a Geoterrex Model X-1 solid state unit which derives triggering from the magnetometer. Basic fiducial pulses are provided once for each two magnetometer readings, so that in usual operation one fiducial is recorded every two seconds. A long pulse is produced once for every ten normal fiducials.

These fiducials marks are impressed on the path recovery film, the eight-channel recorder, the Hewlett Packard Model 680 recorder and the digital printer in order to identify and locate geophysical records with ground positions.

8) E i g ht-Cha n n el Reco rd e r;

This recorder is a Gulton Industries Model TR-888. Records are made on heat sensitive paper of 16 inch width. Each channel has a width of 1.6 inches. Individual signal processors are included for each channel, selected according to requirements for each channel to be recorded.

Normal chart speed is 5.0 inches per minute giving a horizontal scale of approximately 1000 feet per inch.

A typical chart record is included with this appendix.

geoterrex

B. PROCEDURES

1) Photo Laydowns:

Prior to undertaking of the survey, air photos of the area are obtained from which a photo laydown is produced, to an appropriate scale, usually 1" s 1320 feet. Proposed lines are drawn on the laydown, in the appropriate direction and line spacing. These "flight-strips" are then used by the air crew for navigating the airplane visually along the proposed lines. This photo laydown is also used to produce the subsequent base maps.

2) Aircraf t Ope rati on:

The air crew consists of pilot, co-pilot (or naviga tor) and equipment operator. The aircraft is flown along the proposed lines at an altitude of some ZQH f^fiJL^ using the flight strips for navTgaTToru Altitudes in excess of 300 feet are generally considered too high for effective penetration.

The operator records lines, direction of flight and starting and finishing fiducial numbers on a flight log. Equipment is normally left on during the whole of the survey flight, while the intervalometer is turned on only for the actual survey line. Thus, the appearance of fiducial marks on the charts indicates the extent of the survey line.

3) Field Reduction;

Upon completion of the flight, the film is developed and the actual path of the aircraft is plotted on the photo laydo.wn. This is accomplished by comparing the film points with the photo. For any given point, the appropriate fid ucial number is placed on the photo laydown and the points joined to produce the actual flight path.

When field results are desired, anomalies are chosen and assigned appropriate fiducial numbers. The anomalies are then transferred to their correct position on the photo laydown.

geoterrex

6.

4) Office Reduction;

On the completion of the survey, base maps are drawn using the photo laydown as a base. Flight lines and fid ucial numbers are shown on this base map*

In the case of EM or radiometric results the anomalies are then plotted on the base map as boxes with symbols representing anomaly grade or amplitude (as noted on the legend accompanying each map). Anomaly "systems" are then outlined as conductive zones at which stage geological comparisons and interpretation may be made.

In the case of magnetic results, the values noted on the Moseley chart are transcribed to a work sheet (overlay of the base map) after levelling or correcting for heading error, diurnal, etc* The values are then contoured on the work sheet and then drafted on a copy of the base map.

Since base maps use the photo laydown as a base, all geophysical results portrayed may be compared as overlays, and all features of interest may be identified on the appropriate photo for subsequent ground location.

ggoterrex

A - S i.jrejxgjbh

AJPELENDJLX C

CONDUCTOR RATINGS

Mostly V Mostly 2 ! Mostly 3 ! Mostly X !

1510

5O

MAX

15

B - Conductivity

C - V G r i g bil i ty

^ - AfoAK6 ken^Ah

E - Mag Correl'n

F ~ Geology

G - Structure

15Ration! 10 Ratio .5 to 1 5

O

15

EM YesNo

Mag YesNo

^ -f- mi .•^ to 1 mi'.1 to 2 mi.> 2 mi.

100

50

151050

Direct 15Sporadic Dir. 10Assoc. 5Nil O

Favourable 15Unknown 10Unfavourable O

Fault, Fold 10Arcuate 5Straight O

H - Miscellaneous Subjective evaluationRanging from -15 to +15

10

5

15

15

15

10

TOTAL: 100

g&otera

CONDUCTOR R ATINGSPROJECT 84

ZONE

T-1

T-2

T-3

STRENGTH

5

8

6

CONDUC TIVITY

15

15

15

i

T-4 5 i 14

T-5

i5 15

VARIABILITYEM

3

2

4

5

1

•- - - ', '— — - — r "" "— ' — - j i

L

...,..' .. '

*,

^W

41 —— W—

MAG2

5

2

5

^

,,*- - ....,-v,,™,,.

STRIKE LENGTH

7

10?1

10

7

7

MAGNETIC ASSOCIATION

15

15

10

6

15

GEOLOGY

5

5

5

5 -

5

i

"^

STRUC TURE

— m

MSC.

5

-

4-10

-

-

*

TOTAL

50

60

52

50

41

. '

CATEGORY———————— *^ ——

- COMMENTS

B Eone is outside! survey and striljlenqth unknown,,

B

B

3

B"

~

Good EM with mag

Strike directiofmqy indirnfp n

relationship wi~zones T-2 and T—'length unknown

fair intensityonly

.

9..v........ .. ........ ...

IN-PHASE/OUT-OF-PHASE OTTER SYSTEM

ANOMALY GRADING

l-A Grade

Intensity greater than 400 p.p.m. at 150 altitude Good character and correlation Direct magnetic correlation.

1-B Grade

As for l-A but without direct magnetic correlation

ixxxxxxxxxxxxxi 2 -A Grade

Intensity greater than 150 p.p.m. at 150' altitude Good character and correlation Direct magnetic correlation

in j 1111 mi in 2 -B Grade

As for 2-A but without direct magnetic correlation

3-A Grade

Intensity less than 150 p. p. m. at 150* altitude Reasonable character Direct magnetic correlation

3-B Grade

As for 3-A but without direct magnetic correlation

"X" Type

Weak or questionable anomaly

X - Possible anomalous indication.

52H13SE0e24 2 .974 WHITEBIRCH LAKE

REPORT ON A

020

RADIOMETRIC SURVEY

IN THE

TOMMYHOW LAKE AREA

OF WESTERN ONTARIO

FOR


CONDUCTED BY

GEOTERREX LIMITED

PROJECT 84-103

OTTAWA, Ontario,

June, 1972

P. Norgaard, P.Eng., Reva Dowse, B.A., Don McQueen, M.Se.,

GEOPHYSICISTS

geoterrex

1.

I. INTRODUCTION

This report provides an abbreviated interpretation

of the radiometric data obtained in an airborne survey flown

on behalf of Labrador Exploration (Ontario) Limited.

An Otter aircraft with Canadian registration CF-AYR

was used throughout the survey/ and it was equipped with an

In-Phase/Out-of-Phase el e c t romqgjj^tj^c—-s^sjkejn- operating at

320 \\Zj a geometrics G-803 HighPerformgnce proton resonance

magnetometer, a DGRS 1000 gamma roy spectrometer/ and associated

survey equipment. (See Appendix for detailed description of

equipment, compilation procedures and method of control).

The survey block is centred around Lot. 49 50N and

Long. 89 45 W. Lines were flc)wn--N20—W with ySmi^e^^sjyy^Ti^

and also E-W at intervals of j- mile. A total of 151 line^

miles was compiledcro-y-ej:^jifl-^Ji^jJUuJ]L-qj:c^iB out of a total

260 miles 'flown.

The radiometric results are shown as total count

anomalies on a plan map with a scale of l inch s 1/320 feet.

The terrain clearance is indicated, as well as any possible

contribution from land-water interplay or altitude fluctuation. '

This map has also been used to present the electromagnetic

results in order that a consolidation of both sets of data could

be effected.

geoterrex

II. 'PERSONNELl . .1. ..•••..t—.~-~-^.-^.,.


following:

A. Field Op e r a t i on

Pilot A. Bratteng, Ottawa

Navigator R. Bolivar, Ottawa

Operators B. Hind, OttawaS. Harrison, Ottawa B. Kramer, Ottawa

Data Compilers C. Taggart, OttawaL. Matthews, Ottawa

Aircraft Engineer L. Fougere, Ottawa


B* Off ice Compilation


Drafting M. Dostaler, Ottawa

Geophysics R. Dowse, OttawaD. Wagg, ManotickD. McQueen, Ottawa

gqoteiTBK

3.

III. CLAIMS COVERED - 173 Mileage within claims - 151

Total Mileage . - 260

251859262^95*

263124

287709

288279

288301

288552

288803

302543

304322

309216

335996

336022

- 262904

- 263133

- 287728

- 288292

- 288314

- 288553

~ 288822

- 302551

- 304333

- 309276

- 335999

- 336029

incl.

i ne J..

incl.

incl.

incl.

incl.

incl.

incl.

incl.

incl.

incl.)

incl.)These claims were staked since the

the surveys were performed -12

claims staked May 19, 1972.

Airborne geophysical certificate

being applied for.

geoterrex

4.

IV. GENERAL

A* Rod i om e t ri c T h epr y

Certain elements are naturally radioactive, decaying

spontaneously as their atomic structures are transformed/

and emitting particles or electromagnetic radiation (gamma

rays) in the process. The transformed atoms may be stable,

or may be radioactive themselves, creating a series of

daughter products until a stable element is finally produced.

The principal elements causing the natural radioactivity of

rocks are isotopes of uranium, thorium and potassium.

The particles emitted in this radioactivity have little

penetrating power, and only the gamma rays have practical

importance in field surveys. Each emission of gamma rays

has a pattern of energy levels characteristic of the

transformation of a particular element, giving an opportunity

of detecting that element. Studies of the spectra of gamma

radiation have led to the choice of distinguishing uranium

(U-238) by gamma radiation with an energy level of 1.76 Mev,

which is actually emitted by one of its daughter products, bismuth

(Bi-214). Similarly, thorium (Th-232) is distinguished by

gamma rays of 2.62 Mev from its daughter thallium (TL-208).

Radiation from potassium (K-40) has a single energy level,

1.46 Mev.

The approach of using a daughter to detect the presence

of a parent is valid only if the radioactive series is in

OGtrterrex

5.

equilibrium. Since the daughters have different chemical

properties, they may be separated from the parent. For

example, radon is a gaseous daughter of uranium which can

migrate. Since bismuth is in turn a daughter of radon, the

migration can leave a uranium deposit with little radioactivity

at 1.76 Mev, while the measured radioactivity is concentrated

over the radon where there is actually but little uranium. This

effect can be extremely important in radiometric surveys. Since

most of the natural radiation is absorbed by less than one

foot of rock, direct detection of subsurface radioactive mineral

deposits is impossible, but their presence is often detectable

from migrated daughter products at the surface. Similarly, faults

and fissures which control the movement of ions may be detected.

In this sense there is an intimate connection between radiometric

and geochemical surveys.

The natural radiation is attenuated as it travels away

from the source, principally by Compton scattering. This

reduces the energy and changes the direction. In effect,

individual peaks in the energy spectrum are broadened. The

intensity of radiation travelling more than 150 feet from a

point source approximates the following equation (Gregory d

Horwood, 1963):

4lfd2

Where I , I - i ntensity at distances d and o

and /j x e ffective attenuation coefficient.

geoterrex

6.

This equation will be modified for larger sources/ with the

intensity decreasing less rapidly with distance than the

inverse square relationship.

In addition to the radioactivity coming from the ground/

there can be significant signals in the air from cosmic and

atmospheric causes. These unwanted signals form part of the

background level of intensity, which varies with time.

Unusual atmospheric conditions, especially rain or thunderstorms,

can completely invalidate airborne radiometric measurements.

The scintillation counter detects the arrival of gamma

rays by the light produced in a large sodium iodide crystal.

These scintillations are transformed into electronic signals

by photomultiplier tubes and can then be processed electronically

before recording. A large crystal is necessary to ensure high

efficiency in absorbing the gamma rays, and also a signal

sufficiently large to be statistically valid. For spectrometer

operation^ the signals are processed to give the total counts

per second, and, by means of "windows", the counts per second

at different energy levels.

B. Radiomotric Compilation

Upon receipt of the field data in the head office, the

radiometric charts were analyzed in detail. At first, and

for every line, a noise envelope was established, the amplitude

of which would be compared with that of apparent anomalies.

If the latter had a comparable amplitude, they were rejected.

geoterrex

7.

Once an anomaly is located/ a baseline representing the

background level is established from which the amplitude of the

anomaly is measured. The g n oma l i e s on the interpretgtjjon map

are shown aA-tcLtfll—c-ciyji^s--p,er—s^^ojid—above a local background.

These anomalies are also coded as being either good, intermediate

or poor features. (See Legend).

A "good" anomaly means that the feature has a relative

amplitude generally greater than 100?2 of background and possesses

a well defined, not overly broad, bell-type character. A poor

feature is one which might have an amplitude of 100/2 background

but does not enjoy a good character. It might be spike shaped or

associated with the topographic relief.

geoterrex

8.

v - PISCUSSION OF RADIOHETRIC RESULTS

Results obtained from the airborne radiometric survey

were quite negative largely due to snow cover on the ground.

Some total count anomalies were identified, but these generally

relate to lakes and rivers, and can probably be attributed mainly

to land-water interplay. They reflect only weak to moderate inten

sities and generally exhibit poor anomaly character. Some

contribution from varying depths of snow cover is also suspected.

No good radiometric anomalies were identified within the

survey grid. The more interesting anomalous regions appear to

include the strongest responses such as those on lines 37 and 66

which exhibit total counts of 136 and 144 above background, and those

clusters where some increased amplitude and/or lineation is

suggested, such as the grouping along the eastern perimeter

(lines 53-55) and the one extending from line 12 through line 16.

Respectfully submitted,

P. Norgaard, P.Eng.

R, Dowse, B.A. :

geotera

APPENDIX


A. EQUIPMENT

1) Aircraft;

The aircraft is a deHavilland Otter DHC-3 with Canadian registration CF-AYR. This aircraft is aTTTigTe engine, slow speed, high performance type with a gross weight of 8,000 Ibs. The aircraft may be equipped with wheels, skis, or floats, as required. Normal ̂sjAryey speed is 1 00 jnile- s—p,er hour.

2) Electromagnetometer:

The electromagnetic unit is a R i o TJjiJîIn-Pha^,e-—OJ3-d—0-UJL-of-Phase components of the secondary field at a freOjUenjjvôf^ jÔ^jsjtgjLe^^Der^seôjjjjLi The unit was de signed and built by Geoterrex, and carries Serial #1 .




QROtBrPBX

2.







3) Magnetometer;

The magnetometer used is a Geometrics Mojle^L-G-iiOJL-type incorporating a High Performance option.

geoterrex

3.

Recording times are variable, from three times per second to once per 2 seconds, with respective sensitivities of 2 gammas to 0.5 gamma. In jiormql^ use readings ore obtained once er second with a


The magnetometer is a digital readout unit and output is used to drive a paper recorder (Hewlett Packard Model 5050-8). In addition analogue outputs are fed to the eight- channel recorder for direct comparison with the electro magnetic results/ and to a Hewlett-Packard Model 680 - six inch rectalinear strip recorder.


Contouring of results is accomplished as desired.

4) Spectrometer;

An Exploranium DGRS— IQOQ—S-tifi-Cjt-niDLfljLBJi- is optionally carried on the Otter, along with a sensing head containing either three 6" x 4" Sodjjuii— I^idJ^Le—C-r-i^s^LLs. or a single 8" x 4'r crystal.

This is a^our channel measuring energy levels of thallium 208^ and total




geoterrex

5) Altimeter;

The altimeter is a GAR Model 10 wide band radar type. One unit is carried on each wing. The output from the alti meter recorded on the eight-channel recorder. The recording is linear and normally covers from 50 feet to 300 feet, or 25 feet per major division.

6) Came ra;



7) Intervalometer;



8) Eight-Qhqnnel Recorder;




geotera

B. PROCEDURES

1) Photo Laydowns:

Prior to undertaking of the survey, air photos of the area are obtained from which a photo laydown is produced, to an appropriate scale, usually l" s 1320 feet. Proposed lines are drawn on the laydown, in the appropriate direction and line spacing. These "flight-strips" are then used by the air crew for navigating the airplane visually along the proposed lines. This photo laydown is also used to produce the subsequent base maps.

2) Aircraft Operation:

The air crew consists of pilot, co-pilot (or naviga tor) and equipment operator. The aircraft is flown alongthe proposed lines at an altijJj^jjj|e-jgif--^ojje—l2flP-JEfiJBifc using the flight strips for navigation. Altitudes in excess of 300 feet are generally considered too high for effective penetration.


3) Field Reduction;



geoterrex

6.


On the completion of the survey, base maps are drawn using the photo laydown as a base* Flight lines and fid ucial numbers are shown on this base map.

In the case of EM or radiometric results the anomalies are then plotted on the base map as boxes with symbols representing anomaly grade or amplitude (as noted on the legend accompanying each map)* Anomaly "systems" are then outlined as conductive zones at which stage geological comparisons and interpretation may be made*

In the case of magnetic results, the values noted on the Moseley chart are transcribed to a work sheet (overlay of the base map) after levelling or correcting for heading error, diurnal, etc. The values are then contoured on the work sheet and then drafted on a copy of the base map.


geoterrex

52H13SE08I24 8.974 WHITEBIRCH LAKE

REPORT ON A

MAGNETOMETER SURVEY

IN THE

TOMMYHOW LAKE AREA

OF WESTERN ONTARIO

FOR


CONDUCTED BY

GEOTERREX LIMITED

PROJECT 84-103

030

'SECTION'

OTTAWA, Ontario,

June, 1972.

P. Norgaard, P.Eng., Reva Dowse, B.A., Don McQueen, M.Se.,

GEOPHYSICISTS

geoterrex

I . INTRODUCTION

This report provides an abbreviated interpretation of

the magnetic data obtained in an airborne survey flown on

behalf of Labrador Exploration (Ontario) Limited.

An Otter aircraft with Canadian registration CF-AYR was

used throughout the survey, and it was equipped with an In-Phase/

Out-of-Phase electromagnetic system operating a t J^O.Jiz^ a

Geometrics G-8Q3 High Performance proton resonance magnetometer/

a DGRS LQOJL,flmiima ray spectrometer and associated survey equipment.

.(See Appendix for detailed description of equipment, compilation

procedures and method of control).

The survey block is centred around Lot. 49 SON and

Long. 89 45 W. Lines were fJ.j)wn—N2(LJi with ymi-Leacina and

also E-W at intervals of 4- mile. A total of 151 line miles was

compiled covering the claim group out of a total of 260 miles

flowt

Navigation was by visual means utilizing photo-mosaics

at a scale of l inchr:l,320 feet and mean terrain c l e q rar\zs—si3,

maintained throughout the survey area.

Magnetic contours were drafted on a base jnap at a scale

of l inch:rl,320 Jh^al^pnd intervals of 20 gammers, are shown wherever

possible. Values shown represent relative field intensities.

geoterrex

II, PERSONNEL


following:

A. Fi eld O p e ra t i on

Pilot

Navigator

Operators

Data Compilers

A. Bratteng, Ottawa

R. Bolivar, Ottawa

B. Hind, OttawaS, Harrison/ OttawaB. Kra.mer, Ottawa

C. Taggart, OttawaL. Matthews, Ottawa

Aircraft Engineer L. Fougere/ Ottawa


Off ice^ Cqmpilcitipn


Drafting

Geophysics

M. Dostaler/ Ottawa

R. Dowse/ OttawaD. Wagg/ ManotickD. McQueen/ Ottawa

DROterrex

3.

III. CLAIMS COVERED - 173 Mileage within claims - 151

Total Mileage - 260

251859262895,

263124

287709

288279

288301

288552

288803

302543

304322

309216

335996

336022

- 262904

- 263133

- 287728- 288292

- 288314

- 288553

- 288822

~ 302551

- 304333

- 309276

- 335999

- 336029

incl.

incl.

incl,

incl.

incl.

incl.

incl.

incl.

incl.

incl.

incl.)

incl.)These claims were staked since the

the surveys were performed - 12

claims staked May 19, 1972.

Airborne geophysical certificate

being applied for.

geoterrex

4.

J V. INTERPRETATION

The magnetic pattern in this area is rather suggestive

of an intermediate volcanic rock type interspersed with minor

metasediments. The density of axes is moderate, and long, linear

bands ore common. Relative amplitudes generally range from 100 -

400 gammas, although one or two more basic bodies exhibit a

maximum relief above the regional background of 900 - 1000

gammas. The predominant strike is E-W, changing gradually to

NE-SV7, but a few interesting N-S feature? are also apparent

(300-500 J ), particularly along the western perimeter.

The main series of faulting appears to strike E-W, but

minor lineations with N-S and NNE-SSW trends are also reflected to

some degree.

Respectfully submitte

R. Dowse, B.A.

P'. Norgaard, P.

geoterrex

APPENDIX


A. EQUIPMENT

1) Aircraft;

The aircraft is a deHavilland Otter DHC-3 with Canadian registration CF-AYR. This aircrafTT!s™lcisTTTgle engine, slow speed, high performance type with a gross weight of 8,000 Ibs. The aircraft may be equipped with wheels, skis, or floats, as required. Normal survey speed is TOO miles per hour.

2) Electromagnetometer;

The electromagnetic unit is a Rio^Tintotvp^^mejj^ury^ In-Phase and Out-of-Phase components of the secondary field '^T^cT'frequencv o^^jj^pj^gj-gsper^s^^nd. The unit was de- si gneaarid^builtby^Geoterrex,^ariacarrie s Serial #1.




geoterrex

2.







3) Magnetometer;

The magnetometer used is a Geojnfi±JiLc-S-J1odel G-803 Proton Resonance type incorporating a JUgh Performance option.

geoterrex

3.

Recording times are variable, from three times per second to once per 2 seconds, with respective sensitivities of 2 gammas to 0.5 gamma. In once per second with a


The magnetometer is a digital readout unit and output is used to drive a paper recorder (Hewlett Packard Model 5050-6). In addition analogue outputs are fed to the eight- channel recorder for direct comparison with the electro magnetic results, and to a Hewlett-Packard Model 680 - six inch rectalinear strip recorder.


Contouring^ of results is accomplished as desired.

4) Spectrometer :

An Exploranium DGRS-1QOO,^seectrometer is optionally carried on the Otter, along with a sensing head containing either three 6" x 4" Sodium Iodide crystals, or a single 8" x 4" crystal.

This is a fjoinj^jjjjTajT^g^jdi.ffejrei'jitia^measuring energy levels of potassium 40. bismuth 214, thallium 208 and total count^




OGOterreK

5) Altimeter;

The altimeter is a GAR Model 10 wide band radar type* One unit is carried on each wing. The output from the alti meter recorded on the eight-channel recorder. The recording is linear and normally covers from 50 feet to 300 feet, or 25 feet per major division.

6) Came ra;



7) Intervalometer;



8) Eight-Channel Recorder;




geoterrex

B. PROCEDURES

l ) Photo Laydowns:

Prior to undertaking of the survey, air photos of the area are obtained from which a photo laydown is produced, to an appropriate scale, usually 1" s 1320 feet. Proposed lines are drawn on the laydown, in the appropriate direction and line spacing. These "flight-strips" are then used by the air crew for navigating the airplane visually along the proposed lines. This photo laydown is also used to produce the subsequent base maps.

2) Aircraft Operation;

The air crew consists of pilot, co-pilot (or naviga tor) and equipment operator. The aircraft is flown along the proposed lines at a n altitijdj^oif-jj1ojjeBiJ2pi|Ofeet, using the flight strips for navigation. Altitudes in excess of 300 feet are generally considered too high for effective penetration.


3) Field Reduction;



geoterrex


On the completion of the survey, base maps are drawn using the photo laydown as a base. Flight lines and fid ucial numbers are shown on this base map*

In the case of EM or radiometric results the anomalies are then plotted on the base map as boxes with symbols representing anomaly grade or amplitude (as noted on the legend accompanying each map). Anomaly "systems" are then outlined as conductive zones at which stage geological comparisons and interpretation may be made.

In the case of magnetic results, the values noted on the Moseley chart are transcribed to a work sheet (overlay of the base map) after levelling or correcting for heading error, diurnal, etc* The values are then contoured on the work sheet and then drafted on a copy of the base map.


geotera

GEOPHYSICAL — GEOLC 52Hi3SEee24 2.974 WHITEBIRCH LAKE TECHNICAL DA ..-...— ..

900

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

TECHNICAL REPORT MUST CONTAIN INTERPRETATION, CONCLUSIONS ETC.

AUG3 1972PROJECTS SECTION

nf Combined Airborne-Electromagnetic, Magnetometer, Radiometric.

Township or Area Tommyhow Lake Area. W. Ontario Claim h~iH,.r(c) Labrador Exploration (Ontario) Ltd*

Author of Report Norgggrd2060 Walkley Road/ OTTAWA

Covering Dates of Survey . M g X 1 3 - J" ne 30,(linccutting to office)

Total Miles of Line cut

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 surveys)

tic 32,M. l(enter days per claim) f

Total claimable r 80 days per cla: DATE: July 28 f 1972jlGNATURE: fa

S iaW

ifa fa o

PROJECTS SECTION Res. Geol.

Checked by

GEOLOGICAL BRANCH.

Approved by. .date.

GEOLOGICAL BRANCH.

Approved by. -date.

MINING CLAIMS TRAVERSED List numerically

(prefix) (number)

79- 287728 incl.

.288553 incl .

302543.

.3.p..4.3.22.....-....304333...incl,.

309216 - 309276 incl.* 11 * * iii*^* * 11

•6 - 335999 inclX

TOTAL CLAIMS 185

Show instrument technical data in each space for type of survey submitted or indicate "not applicable"

GEOPHYSICAL TECHNICAL DATA

GROUND SURVEYSNumber of Stations—. Station interval.———— Line spacing————.Profile scale or Contour intervals.

MAGNETIC

Instrument .-——————————Accuracy - Scale constant — Diurnal correction method. Base station location——.—

.Number of Readings.

(specify for each type of lurvey)

ELECTROMAGNETIC

Instrument-———^——Coil configuration. Coil separation —— Accuracy————— Method: Frequency^^-^—

J

CU Fixed transmitter D Shoot back Inline D Parallel line

(specify V.L.F. station)

Parameters measured. GRAVITY

Instrument————.Scale constant.Corrections made.

Base station value and location.

Elevation accuracy.————————-——————INDUCED POLARIZATION - RESISTIVITY

Instrument^———~————^—————————Time domain. Frequency—— Power.————

Frequency domain. . Range.—————-

Electrode array.Electrode spacing. Type of electrode,

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 SURVEYS

Type of survcy(s)____

Arnirary. J ri-"-/ ^ : Cl^-^aJ ^ V^ (specify for each type of survey)

Aircraft ''

Sensor altitude 15Q - 2QQ 1Navigation and flight path recovery method - -^ '•'-PtyOiMt iK

lgC-^* R,Hn^ ** (MgQ^-')^ (fAircraft a.Ht..He ^ _______________________ LineMiles flown over total area ________________________ Over claims only

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—————————

ANALYTICAL METHODSValues expressed in: per cent

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

D Oa

Cu, Pb,

Others_

Zn, Ni, Co, Ag, Mo, As.-(circle)

Field Analysis (.

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

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.

7File.

GEOPHYSICAL - GEOLOGICAL - GEOCHEMICAL TECHNICAL DATA STATEMENT

RCCE1VED

/VUG 3TO BE ATTACHED AS AN APPENDIX TO TECHNICAL REPORT

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

PROJECTS SECTION

t

TV™ nf an™™ Combined Airborne-Electromagnetic, Magnetoroeteri Radiowetric.

*", 4i,

*.

s t

iEbo

Tranship nr Aâ ToBimyhow Lake Area, W. Ontariorfoini hnVr(s) Labrador Exploration (Ontario) Lt*

A,,th,u- rtf K^nrt P. NorgaarciAHHr.c, 2060 Ualkley Road, OTTAWAr^^gn^.fQ,,,,,^ May 13 - Juno 30, 1972

(linccutting to office)Total Miles of T.ine rut-.... . ..-..,.,.,.., ...,, , . ...,.,,.

SPECIAL PROVISIONS DAYS CREDITS REQUESTED rî..,.;,-! ^ ——

—Electromagnetic — ..,.ENTER 40 days (includes line cutting) for first -Magnetometer ————————survey. — Radiomrtric. ,.. _ ..ENTER 20 days for each -Other ,...,,,,,,—additional survey using f;pnWi™lsame grid.

Opnrhprmoal , , ,AIRBORNE CREDITS (Special provision credits do not apply to airborne surveys)

Magnet"TTiPtPr32 ,65 Kleotr^rpapriPtir 32 .65 R^Hinmptrir32.65(enter days per claim) /J

Total claimable s 80 days perxcldim 0OATF.. July 2S, ISJTfiNATTIRR. /^ A-*-^~- ———— vX .

f Author of Report or Agent

PROJECTS SECTION Res. Genl. Qiialifiratinns

Previous Siirvpys

rihprkpH hy Hatp

GROI.Or,TnAT,KRAINjr;H

ApprovpH hy datf

nKninnrrAT RPAMPH

ApprnvpH hy d 3 tp

. MINING CLAIMS TRAVERSED List numerically

(prefix)

,..,26^14......287709 -

288^7^ .288301 -288552 -

288803 -

251859(number)

Jwîr fiir U TT illOJL A

.^CJ^* .l ^j^J iftCi A

287728 incl.

29^?a Anfil*288314 incl.288553 incl.288822 incl.

WWW - 392j?5i AlWJl*304?g^ - 304333 insA.309216 .

^335996 -

\J36022 -

.......Irrz]

309276 incl.335999 incl.OOJtrtOO J M ** ) vÔ W *r w Ai 7^ *L tmV'Jkjf

h—————

'TH'ru^Tvv^^ t^Cî^^t^-

TOTAL CLAIMSi 185

If space insufficient, attach list

Show instrument technical data in each space for type of survey submitted or indicate "not applicable"

GEOPHYSICAL TECHNICAL DATA

GROUND SURVEYS

Number of Stations_____________________________Number of ReadingsStation intervalLine spacing————-—————^——————-———————————————-—————^——Profile scale or Contour intervals -——^^——.-—---—--—-—-----————-^^^—^^^—

(specify for each type of survey)

MAGNETIC

Instrument .——^^————————.....———.^—.......——..^—^———Accuracy - Scale constant — Diurnal correction method. Base station location————

ELECTROM AGN ETIC

Instrument ——————Coil configuration. Coil separation ——. Accuracy______Method: CD Fixed transmitter Q Shoot back CD Inline Q Parallel lineFrequency—.————-—--—-—-—————-..-..^^^^^—,-——-.--^-—-..——..—...^^^—^^^-^—--—..——.--.—.—

{specify V.L.F. station)

Parameters measured————————————————————————————————————————————————————. GRAVITY

Instrument ———^^^^—^^—————-——————————————————-———-—————^—————^—-Scale constant.Corrections made.

Base station value and location.

Elevation accuracy—.————————-———.INDUCED POLARIZATION - RESISTIVITY

Instrument ———-——.-————-.———^—————.Time domain___________________________ Frequency domain. Frequency._____________________________ Range.———————

Power —————————————————————————————————————————————————Electrode array-— Electrode spacing. Type of electrode,

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 SURVEYS

Type of survcy(s) ~ v

Instrumcnt(s)

(specify fofeach type of survey)Aircraft ..^H *ttor 1X10*3 with Oonodlort r^flittrction Cf^AYfvSensor aliiinHp 150 - 200'

Navigation and flight path recovery method ^06 Appendix

Aircraft ^..^150*200*_________________________ Line Sp.Hng Vt PU (HgOOVl)^, (E

Miles flown over total arca—*ir5?_______________________Over claims only

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 METHODS Values expressed in: per cent

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

Dn nCu, Pb,

Others—

Zn, Ni, Co, Ag, Mo, As.-(circle)

Field Analysis (~Extraction Method. Analytical Method- Reagents Used——

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

SAMPLE PREPARATION(I ncl tides drying, screening, crushing, ash ing)

Mesh size bf 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.

TRIM UNE

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THUNDER BAY MINING DIVISION

SCALE: l-INCHrr40 CHAINS

LEGEND

PATENTED LANDCROWN LAND SALELEASES

LOCATED LANDLICENSE OF OCCUPATIONMINING RIGHTS ONLY

SURFACE RIGHTS ONLYROADSIMPROVED ROADS

KING'S HIGHWAYSRAILWAYSPOWER LINES

MARSH OR MUSKEGMINES

CANCELLED

C.S.

©Loc-L.O.

M.R.O. S.R.O.

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NOTES

400' Surfoce Rights Reservation around all lakes and rivers.

NATIONAL TOPOGRAPHIC SERIES 52 H13

PLAN NO. M

b.k.497893

ONTARIODEPARTMENT OF MINES

AND NORTHERN AFFAfRS

S2H13SE0024 2.974 WHITEBIRCH LAKE 200

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AIRBORNE GEOPHYSICAL SURVEY

IV1AGIMETOMETER

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geoterrex limitedOT TA WA

HOUSTON - T UCSON

LOWN IN MAY.I972 PROJECT No. 84 -I03

hitebirch lake projects section - ontario · 2017. 1. 17. · 52h13se8024 3.974 whitebirch lake 010...

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