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HLEM & TF MAG SUR · MAPLE LEAF EXTENSION NORTHWESTERN ONTARIO DIVISION RECEIVED JAN l 7 1991...
Transcript of HLEM & TF MAG SUR · MAPLE LEAF EXTENSION NORTHWESTERN ONTARIO DIVISION RECEIVED JAN l 7 1991...
4208986*9 1 7 Z. 13857 MUSSY LAKE ^,-010
. 188 5NORANDA EXPLORATION COMPANY, LIMITED
(no personal liability)
REPORT ON 1990
HLEM AND TOTAL FIELD MAGNETIC SURVEYS
N.T.S. 42 D/9
MAPLE LEAF EXTENSION
NORTHWESTERN ONTARIO DIVISION
RECEIVED
JAN l 7 1991
MINING LANDS SECTION
PROJECT NO. 2076 JOHN GINGERICH THUNDER BAY, ONTARIO SR. DIVISION GEOPHYSICIST JANUARY 9, 1991
4a009SE0ei7 2.13657 HUSSY LAKE
Table of Contents010C
1.0 INTRODUCTION
2.0 LOCATION AND ACCESS
3.0 PROPERTY DESCRIPTION
4.0 REGIONAL GEOLOGY
5.0 PERSONNEL
6.0 INSTRUMENTATION6.1 Magnetometer Survey6.2 HLEM Survey
7.0 DISCUSSION OF RESULTS7.1 Magnetometer Survey7.2 HLEM Survey
8.0 CONCLUSIONS
9.0 RECOMMENDATIONS
Figure l Figure 2
Map l Map 2 Map 3
Location Map Claim Map
List of Figures
List of Maps
Magnetometer Profiles HLEM Profiles (444 Hz) HLEM Profiles (1777 Hz)
l
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1
2
3
333
334
4
5
Scale
1:5000 1:5000 1:5000
l .0 INTRODUCTION
A total of 7 km of HLEM and total field geomagnetic surveying was completed between Nov. 15th and Nov. 19th, 1990 on 200m spaced lines. The objective of the survey was to define an untested HEM conductor (Dighem 1988, Aerodat 1985) which flanked a large magnetic body.
Initial prospecting and mapping failed to explain the anomaly. Subsequent to the HLEM survey defining the anomaly locations additional mapping and prospecting failed to adequately define the source of the conductor.
2.0 LOCATION AND ACCESS (Figure 1)
The property is located in the southwestern portion of the Hemlo greenstone belt approximately 20 km southeast of Marathon and 20 km southwest of Hemlo. Access to the property is via an Ontario Hydro service road. The road turnoff is approximately 20 km (via road) east of Marathon on Highway 17. The claim group is 7 km south of the turnoff.
3.0 PROPERTY DESCRIPTION (Figure 2)
The property consists of 14 claims which join the International Maple Leaf-Golden Trio joint venture which was terminated in November of 1990.
v\ PUKASKWA lNATIONALPARK
LAKE SUPERIOR
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LOCATION MAPFIGURE l
Scol*:i:i,584,000 or l"*25mlle*
MUSSY LAKE MAP AREA ike
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MAPLE LEAF EXTENSION PROPER? Y
SCALE r ~ 1 /2 Mile
Claim List
Claim
TB 1106604 TB 1106605 TB 1106606 TB 1106607 TB 1106608 TB 1106609 TB 1106610 TB 1106611 TB 1106612 TB 1106613 TB 1106614 TB 1106615 TB 1106616 TB 1106617
Recording Date
3/9/90 3/9/90 3/9/90 3/9/90 3/9/90 3/9/90 3/9/90 3/9/90 3/9/90 3/9/90 3/9/90 3/9/90 3/9/90 3/9/90
Asses. Due man/davs
20202020202020202020202020
.20280
4.0 REGIONAL GEOLOGY
The area is underlain predominantly by metavolcanic and volcanic derived metasedimentary rocks of the Heron Bay greenstone belt which occupies the southwestern end of the Wawa subprovince of the Superior Province.
Structurally, the rocks of this belt strike east-west, have steep northerly dips and have a strongly developed FI, foliation parallel to bedding. East-west faults and lineaments indicate possible strike and/or dip-slip fault movements.
In the northern part of the map area tuffaceous and metasedimentary rocks are intruded by granodioritic rocks of the Heron Bay Pluton.
Muir (1982) has presented the regional geology in more detail in O.G.S. Report 218, "Geology of the Heron Bay Area, District of Thunder Bay".
5.0 PERSONNEL
The surveys were carried out by J. Maclsaac and T. Walmsley, all employees of Noranda Exploration Company, Limited.
6.0 INSTRUMENTATION
6.1 Magnetometer Survey
A Scintrex MP-3 proton precession magnetometer was utilized on the survey. Measurements of the earth's total geomagnetic field (accuracy of 0.1 nts) were taken at 12.5m stations. Diurnal corrections were made by integrating synchronized time variations of the earth's magnetic field from a base station magnetometer with the field magnetometer.
6.2 HLEM Survey
The HLEM survey employed a MaxMin II system manufactured by Apex parameterics. A coil separation of 100m was utilized. Two operation frequencies 444, 1777 Hz were used.
The system uses moving transmitter and receiver coils which maintain a fixed separation and horizontal coplanar orientation. The coils are connected by a reference cable and in-phase and out-of-phase components of the generated secondary field, measured at the receiver coil, are expressed as percentages of the primary transmitted field.
7.0 DISCUSSION OF RESULTS
7.1 Magnetometer Survey
The survey defined an area of active magnetic response ranging from 58600 to 69000 gammas with an average of 59850 gammas. Magnetic trends are ostensibly east- west conformable with geologic strike.
An annular area of high magnetic relief greater than 1000 gamma is defined in the east-central portion of the survey area. The character of the magnetic response is indicative of mafic intrusive or coarse flow.
In the west-central portion of the survey area a linear zone of weak magnetic response (200-300 gammas) is defined. Central to the zone a discrete very high magnetic feature is resolved which is interpreted to map a small lense of banded magnetite.
An HLEM conductor strikes central to the magnetic zone indicating the magnetic response is probably related to disseminated pyrrhotite and magnetite associated with a mineralized chert (sediments) unit observed locally in outcrop.
7.2 HLEM Survey
The survey defined an intermediate strength subcropping conductor (1-6 mhos, depth w 30m) in the western portion of the survey area. The conductor (HI) has a defined strike of 400m and displays increased conductivity and width to the west. The strongest response occurs on the most westerly line 12E.
Conductor HI displays a weak, direct magnetic association and is located in a swamp within an area underlain by felsic to intermediate ash/lapilli tuffs and agglomerate. A mineralized (po, py 2-30Xo) outcrop of banded siltstone and chert is located near the conductor strike on line 14E. The conductor is thought to map more a massive sulphide lense.
Sampling in the area has not returned any significant gold or base metal values. Despite the negative results, continued surveying to the west to fully define the conductive limits is recommended. A line of gravity over the strongest portion of the conductor should also be considered if the conductor's strike is substantially increased.
Other weak, high frequency HLEM anomalies are also resolved by the survey. These appear to be related to surficial conductors.
8.0 CONCLUSIONS
1) An intermediate strength conductor (6 mhos, 20m width) with weak magnetic association was defined in the west central portion of the survey area. The limits of the conductor are not completely resolved with the strongest response occurring on the most westerly line.
2) The conductor is located with a swampy area and prospecting and mapping failed to adequately explain the anomaly.
3) Sampling in the area has returned negative results. An outcrop located local to the conductors strike suggests the conductor likely maps a sulphide py, po lense within an intercalated unit of banded siltstone and chert within a broad unit of
felsic to intermediate ash/lapilli tuffs and agglomerate.
9.0 RECOMMENDATIONS
1) Despite negative results, the full extent of the conductor should be defined. The strongest portion of the conductor should be surveyed with gravity if the limits of the conductor are substantially increased.
2) Soil surveying over the conductive strike is recommended to assist evaluation of its base metal potential.
Respectfully submitted,
NORANDA EXPLORATION COMPANY, LIMITED (no personal liability)
Thunder Bay, Ontario January 9, 1991
John GingerichSr. Division GeophysicistNorthwestern Ontario Division
Ontario
Ministry ofNorthern Developmentarvl Mines
Report of Work Mining Act (Geophysical. Geological and Geochemical Surveys)
2.13057 MUSSY LAKE
Instructions- Please type or print- Refer lo Section 77. the Mining Act lor assessnwit i'.'
and maximum credit* tilowM per survey type H number of mining claims traversed exceeds spar
900
Technical Reports and Mining Landt Section.
type of Surveyls)HLEM ft MAGNETOMETER
Mining Division
Thunder BayTownship or Are* f lMuuy Creek Area4A4fr((? J;7i \
Recorded Holder(s) ^ 1 O /O l" *""1
Noranda Exploration Company, Umlted ^ |^ O^ "fAddressP.O. Box 2656, Thunder Bay, Ontario P7B 502
^^nda^xploration Company, Limited, P.O. Box 2656,Name and Address of Author (ol Geo-f echnical Report)
John Gineerich, P.O. Box 2656, Thunder Bay, OntarioCredits 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 same grid:
Enter 20 days (lor each)
Man Days
Complete reverse side and enter lolal(s) here
Airborne Credits
Note: Special provisions credits do not apply to Airborne Surveys
Geophysical
. Electromagnetic
- Magnetometer
- Other
Geological
Geochemical
Geophysical
- Electromagnetic
- Magnetometer
- Other
Geological
Geochemical
Electromagnetic
Magnetometer
Other
Days per Claim
20
40
Days perClaim
Days porClaim
Total miles flown over claim(s).Dale
Jan. 14/91Recorded Holder or Agent (Signature)
Mining
Thunder Bay, Ontario
P7B 502Claims Traversed (List inMining Claim
Prefix
TB
TB
TB
TB
TB
TB
TB
TB
-
Number
1106610
1106611
1106612
1106613
1106614
1106615
1106616
1106617
Prospector's Lce"rv:e No ^
A.34387Teior^one No
(807) 623-4339
P7B 5G2
numerical
Oatt ol Survey (from 4 D)
cfil/OS/ap, i .19/11/90sequence)
Mining Claim
Prefix
-l
Number
RCT4ricVsl
N
JUMIM/rltTMtn\
J AN 3
HAN
Tolal nun 'her o mining claims c by tins 'e: j" o
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01991
3S SECTION.-.. .
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overc.1 8V.C-v
Certification Verifying Report of Work
l hereby certily (hat l have a personal and intimale knowledge ol the (acts set lonh in this Report ol Work having performed the work or witness" 1 sa"i? tin- - : ,- : her its completion and annexed report is true
Name and Address ol Person Certifying
Cecilia M. Barrett, P.O. Box 2656, Thunder Bay, Ontario P7B 6G2
For Office Use Only
loia^oays^ Cf Recorded
Udip HecotdecJ
Date Approved as Recorded
'SEE REVISED
^-Cl
Telephone No.
(807) 623-4339
"iff. .
^^Provincial Manage^. Mining Lftnds
WORK STATEMENT
Date l Certified By (SjgQgtuie) -,
Jan. 14/91 X C^^^^f - -.Received Stamp ' ^ w
Ontario
Ministry ofNorthern Developmentand Mines
Ministere du Developpement du Nord et des Mines
Mining Lands Section4th Floor, 159 Cedar StreetSudbury, OntarioP3E 6A5
Telephone: Fax;
Your File: Our File:
(705) 670-7264 (705) 670-7262
W. 9140. 003 2. 13857
April 21, 1991
Mining RecorderMinistry of Northern Developmentand Mines435 James Street, SouthP. O. Box 5000THUNDER BAY, OntarioP7C 5G6
Dear Sir/Madam:
RE: Notice of Intent dated March 21, 1991 for Geophysical (Electromagnetic and Magnetometer) Surveys on mining claims TB. 1106610 et al in Mussy Lake Area.
The assessment work credits, as Notice of Intent have been
Please inform the recorded indicate on your records.
Yours sincerely,
ith the above-mentioned the above date.
ining claims and so
Ron. C. Gashinski, Provincial Manager, Mines 8c Minerals
fJ/jl
cc: Noranda Explo Thunder Bay,
Y. v , Resident Geologist fy ^tfhunder Bay, Ontario
•rttfMnMTtchnloal AftMttmwt WoricCrwltt
March 25/91
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Othor. ————————— —————————— '•w
StOtion 77 (10) So* "Mining CUmi AnMtwT column
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TB. 1106610 to 617 incl.
tpodol crodlt* uixkr Motion 77 (16) for th* following mining dolmi
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Ministry ofNorthern Developmentand Mines
(tt*Geophyslcal-Geologlcal-Geochemical Technical Data Statement
Ontario
TO BE ATTACHED AS AN APPENDIX TO TECHNICAL REPORTFACTS SHOWN HERE NEED NOT BE REPEATED IN REPORT
TECHNICAL REPORT MUST CONTAIN INTERPRETATION, CONCLUSIONS ETC.
FiiQ c:o o
Type of Survey(s).
Township or Area.
Claim Holder(s^
MteALT0.
Survey Company i\)Qft4A?OA
Author of Report.
Address of A. .thor AftV,
Covering Dates of Survey_
Total Miles of Line
Ol-nQ-QO(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——Magnptomptpr M Q
—Radiometric—————
—Other————————
DAYSper claim
Geological.Geochemical.
AIRBORNE CREDITS (Special provision credits do not apply to airborne lurveyi)
Magnetometer..
HATR. 3ttV\
.Electromagnetic. . Radiometric(enter days per claim)
SIGNATURE:ort or Agent
Res. Geol.. Qualifications - T O
Previous Surveys File No. Type Date Claim Holder
MINING CLAIMS TRAVERSED List numerically
(prefix)
.......IXQJfefaU.(number)
..jm.i.i.mi
TOTAL CLAIMS.
637 (85/12)
GEOPHYSICAL TECHNICAL DATA
GROUND SURVEYS — If more than one survey, specify data for each type of survey
Number of Stations 2 Z-H (lUfn} W 8 ( MA/^_____Number of Readings 83(e(H0BM) W8
Station interval Z.S"ifv\ ^Xjg-.^ rf\——————————————Ljne sparing 2.C)Qrv\-^————————
Profile scale____IOYW * ioVo____,Contour interval.
Instrument _________Sc-irJTg,feX_____Mf 3
z; C
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Accuracy — Scale constant ———————3k Diurnal correction method -————Base Station check-in interval (hours) ^a/yyypk fCOVfi,
Base Station location and value
Instrument ______M/VxlAlfO TT, Coil configuration -—— Coil separation ——-—-.
rt AccuracyoJ Method: CH Fixed transmitter D Shoot back 53ln line CH Parallel line
Frequency_____HHH K& ^ Illl \\l
Parameters measured____/t(specify V.L.F. station)
Instrument.Scale constant.Corrections made.
Base station value and location,
Elevation accuracy.
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2OHa(4 OJ-J Q
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Method D Time Domain D Frequency DomainParameters - On time Frequency , ,,, .,.
Off time Range
— Delay t 'm f— Integration time. . . .——— ,.
Power ____ — —— - ————————— — —— — ————————————————————————————————————Electrode array ——————— — ————————————————————————————————————————— - ——— — —Electrode soaciner . - ————————————————————————————— - —————— — ———————————
Type of electrode
SELF POTENTIALInstrument.————————————————-—————-——————————^— 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 survey(s)——— Instrument(s) —————
(specify for each type of survey) Accuracy—————————————-^—.—
(specify for each type of survey)
Aircraft used-———-—————-—-—..—.———-——^—.-..———Sensor altitude.Navigation and flight path recovery method.
Aircraft altitude-—————.....-—--—-.-———-———.———..——.^Line Sparing Miles 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————————
Drainage Development——————————— Estimated Range of Overburden Thickness.
ANALYTICAL METHODSValues expressed in: per cent D
p. p. m. Dp. p. b. O
Cu, Pb,
Others—.
Zn, Ni, Co, Ag, Mo, As,-(circle)
Field AnalysisExtraction 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 -———-
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Instrument : MAXM1N H
Coil Spacing : 100m
Vertical Scale: 1 cm - 105!
Frequency : 444 Hz
In Phase :
Quadrature :
100m Mm Oml__LI__LI—
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NORTHEAST GRIDHLEM SURVEY
FREQ. 444 HERTZPROJECT: MAPLE LEAF PROJECT # : 2076
BASELINE AZIMUTH : 90 Deg.
SCALE ~ 1 : 5000 DATE : 11/22/90 SURVEY BY : JM/TW NTS : 42 D/16
FILE: H2076NOR NORANDA EXPLORATION
10W.5N Strtaf l HM140 ftafMmd Uwr i NOHANOA FXPLOWATKW42D69SEW17 2. 13857 MUSSY LAKE 210
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Frequency : 1777 Hz
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NORTHEAST GRIDHLEM SURVEY
FREQ. 1777 HERTZ PROJECT: MAPLE LEAF PROJECT # :
BASELINE AZIMUTH : 90 Deg.2076
SCALE - 1 : 5000 DATE : SURVEY BY : JM/TW NTS :
FILE: H2076NOR NORANDA EXPLORATION
11/22/90 42 D/16
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Instrument
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: TOTAL
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Contour interval :
profile Scale : 250 nT / C m (logarithmic)
Conductor Axis
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100ml
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MAPLE LEAFMAGNETOMETER SURVEY
PROJECT: MAPLE LEAF PROJECT # i 2076. BASELINE AZIMUTH : 90 Deg.
SCALE s 1 : 5000 DATE : 11/15/90 SURVEY BY : JM NTS :
FILE: M2076MAP NORANDA EXPLORATION