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41J87NWM28 MMA1 JUILLETTE 010
AIRBORNE RADIOMETRIC SURVEY
TOWNSHIPS 161, 167 AND 168
SAULT STE. MARIE MINING DISTRICT
OF
ONTARIO
OCT 11 im
RESIDENT GEOLOGISTSAULT STE. MARIE
BY
IMPERIAL OIL LIMITED
T0 ,, E REMOVED
THE OFF.CE OF THE RE
3.0LOCI.T. ONT. DEPT. OF M.NM
SAULT STE. M ARIE, ONT; by: Nelson W. Baker
September JS, 1977
se
:,:--:K3*
m* :^
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4IJ*7NW*928 M14A1 JUILLETTE
TABLE OF CONTENTS
INTRODUCTION
CLAIMS SURVEYED
FIGURE NO. l
GENERAL GEOLOGY
SURVEY PROCEDURE
INSTRlftENTATION
INTERPRETATION OF A RADIOMETRIC SURVEY
DISCUSSION OF RESULTS
SUMMARY AND CONCLUSIONS
010C
Page
l
2
2
3
4
4
5
1) APPENDIX "A"
LIST OF CI AIMS SURVEYED
2) APPENDIX "B"
PERSONNEL INVOLVED IN SURVEY
3) APPENDIX "C"
ANOMALY DATA
4) DRAWINGS 01001, 1002. 1003 AND 1004
RESULTS OF URANIUM AND THORIUM SURVEYS
SSM-1961
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i.;~^•:
AIRBORNE RADIOMETRIC SURVEY
TOWNSHIPS 161. 167 AND 168
SAULT STE. MARIE MINING DISTRICT
ONTARIO
INTRODUCTION:
During the period of August 31 and September 2, 1977, an air
borne radiometric survey consisting of 70.27 line miles was completed *
by Imperial Oil Limited over a 65 clair. group situated in Townships 161,
167 and 168 in the Sault Ste. Marie Mining District of Ontario.
The 65 claims, which are held jointly by Imperial Oil Limited
and Consolidated Morrison Limited were flown in two directions 'i.e.North-
South and East-West) at a flight line interval of 1/8 mile.
The radiometric survey measured uranium, thorium and potassium
radiation separately. This report describes the results of the
uranium and thorium surveys.
CLAIMS: (Figure No. 1)
The 65 claims surveyed are located in one group straddling
Townships 161, 167 and 168. All the claims situated in Township 168 are
under extension until September 30, 1977. All other claims have been
recently staked in July 1977. A list of the 65 claims forms Appendix "A"
to this report.
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GENERAL GEOLOGY:
The northern half of the claim group (Township 168) is
underlain by flat-lying Gowganda Formation which consists essentially
of conglomerate, quartzite and arkose. The rocks underlying the
southern half of the claim group consist of shallow dipping Bruce
conglomerates and Mississagi quartzites.
SURVEY PROCEDURE:
The airborne radiometric survey was carried out by Imperial
Oil Limited using a geophysically equipped 206-B helicopter (registration
C-GOQA) on contract from Dominion Pegasus Helicopters Limited based out
of the Sudbury airport in Sudbury, Ontario.
Due to the flat-lying nature of the rock formations described
above, flight lines were orientated both North-South and East-West
directions at a nominal interval of 1/8 mile. On the average, the survey
was flown at an airspeed of 70 m.p.h. with a mean terrain clearance of
about 100 feet.
Both pilot and operator-navigator were provided with un
controlled photo lay-down mosaics at a scale of AOO feet to one inch,
with the intended flight lines drawn in and numbered. Navigation was
accomplished by visual means based on the topographic detail observed.
The operator-navigator marked fiducial numbers at identifiable points
on the mosaic, and the flight lines were recovered at the field office. '*
A total of 70.27 line miles of survey were completed over
the 65 claim group.
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INSTRUMENTATION:
The helicopter carried the following equipment to coAplete
the radiometric surveys-
1. McPhar - Model 3001 - four differential spectrometer.
2. An Airecord VI - six channel analog recorder.
3. Crystal 954-1 detector (256 cu. in.).
4. Bonzar Mark 10 Altimeter.
The McPhar Spectra A4D Spectrometer System consists of a
256 cu. in. sodium iodide crystal, in optically coupled photomulti-
plior tube, and a gamma ray spectrometer with both built-in analog
recorder and magnetic tape cassette recorder.
Gamma rays are detected by the sodium iodide crystal and
converted to electrical energy in the photomultiplier tube. The
electrical impulses are then sorted into four energy levels (K, Th,
U, Total Radiation) by the gamma ray spectrometer of.d recorded in
the analog mode and/or on magnetic tape.
The magnetic tape cassette recorder stores information
from all four energy levels simultaneously, and in the Meroodyne
decorder a print-out of four-channel analog data can be retrieved.
Any of the four channels can be selected for display and
recording on the built-in analog recorder, but only one channel at a
giv^n time.
Calibration consists of applying a calibrating source to the
crystal and rotating the "calibrate" control for a peak reaJing on a
separate channel provided for this purpose.
-ifv
INTERPRETATION OF A RADIOMETRIC SURVEY:
Gamma radiation emanates from radioactive sources and can
be detected by vising a sodium iodide crystal. Assuming equilibrium
within radioactive series, the amplitude of radioactivity in each of
the U, Th, and K channels is proportionate to the concentrations of
these elements in the radioactive source. Other factors that influence
the radioactivity amplitude are the surface area of exposure to the
airborne detector system, the elevation of the aircraft and its airspeed,
Examination of the ratios of uranium to thorium response is ah
excellent indicator of relative increase or decrease of the concen
tration of one of these elements. Examination of amplitude alone may be
misleading for the above reasons.
DISCUSSION OF RESULTS: (Drawings #100l, 1002, 1003, 1004)
No real significant airborne radiometric response was detected
within the survey area. Several narrow weak responses were recorded
alonp, several flight lines, but no pattern can be discerned when values
are plotted.
1) URANIUM: (Drawings i?l001 and 1002)
On L17N, anomaly A proved to be the strongest uranium
response of the entire survey. Slightly above background
readings were recorded with a U/Th ratio of 2 to 1. This
anomaly, on reviewing the tapes, appears to be narrow and
weak.
SSM-1961
- 5 -
A second response, anomaly C on L105E, is also a weak anomaly
but appears to have a little more width than the above
anomaly.
2) THORIUM; (Drawings ?1003 and 1004)
The thorium anomalies, like the above, are all weak and
narrow responses. The only anomaly worth noting is
situated on L1SN and has been designated anomaly A.
Although the values are low, the Th/U ratio for this
anomaly is 16/1. *
SUMMARY AND CONCLUSIONS:
The results of an airborne radiometric survey did not indicate
the presence of significant uranium and/or thorium anomalies. All of the
anomalies plotted are considered very weak when compared to test flights
flown over known deposits (Agnew Lake area) or showings.
It is thoup^*- that weak anomalies may be attributed to the
following causes:
1) Groundwater deposition of radioactive minerals in fractures
or in narrow faults occurring near an elevated source rock.
2) Narrow, weak concentrations of radioactive minerals in the
form of veinlets o t pyrite associated with the Mississagi
quartzites.
It is recommended that a field check
be made prior to the freeze-up period.
,ium anoaalies
t--'
5
9OO
tural Resources
31CAL - GEOCHEMICAL STATEMENT
TO BE ATTACHED A S AN APPENDIX TO TECHNICAL REPORTFACTS SHOWN HERE NEED NOT BE REPEATED IN REPORT
TECHNICAL REPORT MUST CONTALN INTERPRETATION, CONCLUSIONS ETC.
Type of Survey(s) AftBoRME
Township or Area.
Claim Holdcr(s).
TWP. ( 1 48
Survey Company OIL. L-lfYHTSC)Author of Report
Address of Au r Kor
Covering Dates of Survey
Total Miles of Line fla*
b^ARCY fV?Agg(53 j "- 2? /77
(linccutting lo office)
TO.
SPECIAL PROVISIONS CREDITS REQUESTED
ENTER 40 days (includes line cutting) for first survey.
ENTER 20 days for each additional survey using same grid.
r, L I Geophysical
DAYS per claim
Geochemical ^
AIRBORNE CREDITS (Special provision crediu do not apply lo airborne torveys] \Magnetometer. .Electromagnetic
(enter days pr clai
DATE: o. SIGNATUREAuthor of Report or Agent
Res. Gcol.. .Qualifications.Previous Surveys
File No. Type Date Claim Holder
MINING CLAIMS TRAVERSED List numerically
(prefix) (number)
TOTAL CLAIMS.
..
SELF POTENTIAL-
Instrument Range.Survey Method .
Corrections made .
RADIOMETRIC
Instrument.Values measured.Energy windows (levels) Height of instrument .— Size of detector Overburden
. Background Count .
(type, dkpth - indude outcrop map)
QTHF.RS (SEISMIC. DRILL \\T1LL LO(JGIN(i F.TC.)Type of survey____________________i—————————————Instrument _______________ -.-^——^^^—-^————^^——..^^ Accuracy_________________ —____________________Parameters measured.
Additional information (for understanding results).
N l S L' RV K V .S
Type of
Instrunicni(s) 3eOf ^
Accuracy t- 2(specify for etch type of survey)
Aircraft .. Sensor
C BgL(specify, for each type of survey)
Navigation and flight path recovery
Aircraft altim/h- /?VXggAGg )OQ '
AK)P
OO
Line YQ M l Lg .Miles flown over total area 70*3*7 Over claims only
o
IMPERIAL OIL LIMITED
APPENDIX "A"
CLAIMS COVERED BY
AIRBORNE SCINTILLOMETER SURVEYS
CLAIM NO.
399409399410399411399412399413399414399415399416399417399418399419399420399421399422399423399424399425399426399427399428428902428903428904428905428906mm429325429326429327429328429329429330
452301452302452303452304452304452305452306452307
NO. OF DAYS
80 it
EXPIRY DATE
Sept. 30, 1977
it •i
M
M
II
II
II
II
II
II
II
II
It
II
II
II
II
II
It
II
II
II
II
II
60
it•i•i
H tt
•i•i
n ii•i n•t n•i
July 20, 1978
ii H
II
II
II
II
II
II
II
II
II
II
II
II
II
II
II
It
II
II
II
S8E66V V8E66*?
II'03
09
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99Z6W
axvaSAVa 10 *ON'ON MIVTO
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•tf'pf- ' -'fe: '(PROJECT AUGON/IA - TVN/P. IfeA
Urn
1BS:
16 St7Kf17 d
J9k)23AI25 M
1 r
Lh
9 •;y-5fgIMPERIAL OIL LIMITED - MINERALS ' -^ '^
AIRBORNE SPECTROMETER ANOMALY DATA - * i/' *
NfS 4J-*J-6 MAP NO LINE SPAnWfi /ft MlUS ^
Fiducial
4T6
SZ-S
85-8
92.0
9* S102..^
\2-4.7I4Z.-8
- *,
^.
3-
f
ftue!
^
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Anomaly
A
A
A
ABA^A
MAXIMUM VALUEK
IS
•2.2.
46
rio
38
24
3^34-
.——
U
17-
1
17
!4
IS
a12-
12.
Th
IS
/6
Kb
.IS..
i?*
20
^^
. - -
Int ; j
,- . , ,
U/Th Ratio
8kg Int
i
.— -.-.
.-.-
Alt. (feet)
4^
loO
-i 64666
-4- Z.
(b Oil
^Vo*
Width* {time
25
2-6
2- S
2-5
2.5T
2-5
2.5
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.
.
Remarks
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ve fe "f ^*E A 1^.
li
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CauK of Anomaly
1
m ^*y
'TIME
IMPERIAL OIL LIMITED - MINERALS
AIRBORNE SPECTROMETER ANOMALY DATAROJECT - Twp. f 48 N.T.S. MAP NO. LINE SPAC'NG Ve M l Lg
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A
BA
A
A
B
O
AAA
MAXIMUM VALUEK
S
20
10
10
(^
—
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10
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S
10
Cs
——
(^
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^
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IS1-2-
15
IB
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r
;
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6840
90
So•45
Ao^o
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2B
S5
Width* (time
in(nrv3tjZ.**
a.-s2-S
2.5
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2U5—•?Ji,.2-5...
?,6 . ...2-5
Remarks
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-
Cause of Anomaly
•TIME i NTCPVAi tr ;", SIT UNITS?; orntiuvisi scri.if i-r;i
ALGOMA PROJECT
AIRBORNE RADIOMETRIC SURVEYS
PERSONNEL EMPLOYED:
POSITION
Pilot:
M. Lipp
Navigators:
R. T. Garvey
G. Dunn
EMPLOYED 3Y
Dominion-PegasusP.O. Box 340King City, Ontario
Imperial Oil Limited 1235 Bay Street Toronto
PERIOD
August 31 - September 2, 1977
August 31 - September if, 1977
Draughtman:
R. Jackson
Imperial Oil Limited 1235 Bay Street Toronto
September 12 - September 23, 1977
Report Writer:
N. W. Baker
Imperial Oil Limited 1235 Bay Street Toronto
September 12 - September 23, 1977
KAMICHISITIT TP M. 1610
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JUILLETTE(Former TP 167)
DISTRICT OF ALGOMA
'SAULT STE.
MINING DIVISION
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THE TOWNSHIP OF
TIMMERMANS(Tp. 161DISTRICT OF
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SAULT STE. MARIE MINING DIVISION
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KB14A1 JUILLETTE 230