52H84NWeaa7 a.5610 TIB LAKE 010 Assessment Report Report on Geological, Geochemical and Geophysical Surveys conducted on the Tib Claims Thunder Bay Mining Division, Ontario Claims TB 645906 - 645915 inclusive Claim Map Tib Lake Area (M2911) NTS 52 H-5 Latitude 89 0 40'W Longitude 40 0 05'N RECEIVED JUN 81983 MINING LANDS SECTION Paul R. J. Nicholls, P.Eng., Westmin Resources Limited. May 15, 1983.
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52H84NWeaa7 a.5610 TIB LAKE 010
Assessment Report
Report on Geological, Geochemical
and Geophysical Surveys
conducted on the Tib Claims
Thunder Bay Mining Division, Ontario
Claims TB 645906 - 645915 inclusive
Claim Map Tib Lake Area (M2911)
NTS 52 H-5
Latitude 89 0 40'W
Longitude 40 0 05'N RECEIVEDJUN 81983
MINING LANDS SECTION
Paul R. J. Nicholls, P.Eng., Westmin Resources Limited.
May 15, 1983.
15,
Certification
I, Paul R.J. Nicholls, of 40 Albert Street,
Stouffville, Ontario, certify the following facts:
1) I am a Professional Engineer registered in
the Province of Ontario.
2) I hold a B.Se. in Geological Engineering
obtained from Queen's University, Kingston,
in 1976.
3) I have practised my profession for 7 years.
4) I have supervised the work and interpreted
the results mentioned in the foregoing
report.
5) I have no financial interest in this
property.
Paul R. J. Nicholls
May 15, 1983
52H84NWee07 Z . 5618 TIB LAKE 010C
Table of Contents
Page No.
List of Figures f i
List of Tables ii
List of Appendices ii
1.0 Summary and Conclusions l
2.0 Recommendations l
3.0 Introduction l
4.0 Northwestern Ontario 3
4.1 Regional Geology of the Lac des Iles 5 Area and Exploration Target
5.0 Tib Lake Intrusive 7
5.1 Previous Work 8
5.2 Results 8
5.2.1 Geological Mapping 8
5.2.2 Geochemistry 10
5.2.3 Magnetometer Survey 13
Selected Bibliography 14
Certification 15
List of Figures
Page No,
Figure l Location Map of Lac des Iles Area
Figure 2 Location of Claims (1:31,680)
2
4
Figure 3 Geology of Lac des Iles Area (1:100,000) in pocket
Figure 4 Tib Lake Geology Map (1:5,000) "
Figure 5 Tib Lake Soil Geochemistry Survey Sample "
Location and Ni Results (1:5,000)
Figure 6 Tib Lake Soil Geochemistry Survey Sample " Location and Cu Results (1:5,000)
Figure 7 Tib Lake Magnetometer Survey (1:5,000) "
List of Tables
11
Page No.
Table l Table of Formation for the Lac des
Iles Area
Table 2 Summary of Statistical Parameters for
the Tib Lake Soil Geochemical Survey
Table 3 Assay Results
11
11
List of Appendices
Appendix l Technical Information
Appendix 2 Geochemical Results and Statistics
Summary and Conclusions:
During June 1982, a program of soil geochemistry,
geological mapping, and magnetometer surveys were con
ducted on the Tib Lake intrusive.
The work on the Tib Lake intrusive was successful in
tracing a pegmatitic and weakly sulfidic horizon from the
Kuhner showing to the east along the southern margin of
the intrusive. This sulfide horizon was defined by the
geological mapping and soil geochemistry. No significant
amounts of PGM were located in the horizon.
2.O Recommendations:
No further work is warranted in the Tib Lake area
because of the lack of encouragement gained from the
1982 program.
3.0 Introduction:
Westmin Resources Limited initiated the Platinum Group
Metals (PGM) Generative Program in 1981 to explore the
Canadian Shield for economic deposits of PGM.
In 1982 the PGM Generative Project concentrated on
an evaluation of the Tib Lake Mafic intrusive in the Lac
des Iles Area of Northwestern Ontario (Figure 1).
The following report deals with the results of the
1982 geological, geochemical and geophysical surveys con
ducted on the Tib Lake Area.
t . -rVolcanic ana sedimentary rocks. . . . Boundary of Canadian Shield Boundary of Superior Province . . . .
deposit. The western gabbro (Dunning, 1979) is a layered
intrusive with layers of gabbro, norite, clinopyroxenite
and anorthosite. The unit is generally coarse-grained
with many pegmatitic pods and lenses. The PGM minerali
zation is commonly found in Cu-Ni bearing sulfides assoc
iated with these pegmatitic horizons. The objective of
the 1982 work program conducted on the Tib Lake property
was to define mafic pegmatitic horizons in the Tib Lake
property and any PGM bearing sulfide zones associated
with the mafic pegmatites.
5.0 Tib Lake Intrusive:
During the period June 3 to June 15, 1982, a program
of geological mapping, geochemical and ground magnetometer
surveys was conducted on the southern portion of the
intrusive.
1) An east-west baseline was established in the area
and compassed topo chained lines were established
at 100 meter intervals along the baseline.
2) Geochemical soil samples (A horizon) were
collected at 50 meter intervals along the
lines. A total of 313 samples were collected
over the nine contiguous claims.
3) All outcrops were mapped and prospected for
visible sulfide mineralization using the grid.
8,
4) A ground magnetometer survey utilizing the EDA PPM
300/400 proton precession magnetometer system was
carried out over the same grid.
Technical details for the various surveys are summarized
in Appendix 1.
5.1 Previous Work:
The Tib Lake intrusive is located approximately 15
kilometers to the west of the Lac des Iles PGM deposit
and covers an area of 24 square kilometers. Previous work
on the intrusive located two Cu-Ni sulfide occurrences
(K. Kuhner showings) 630 ppb Pd). The main purpose of the
exploration on Tib Lake was to trace the mineralization from
the known showings with the aim of locating higher grade
mineralization.
5.2 Results:
5.2.1 Geological Mapping
The Tib Lake area was previously mapped by L. Kaye
for the O.D.M. In 1982, the property was mapped by P.
Nicholls and N. Jefferies, using north-south lines spaced
100 meters apart, along a cut east-west baseline. The
results of the geological mapping are presented on Figure 4
at a scale of 1:5,000.
Outcrop exposure in the area is approximately 10 - 2 0%
with much of the remaining area covered by overburden. The
overburden is glacially derived and is considered to be
relatively thin on the property due to the number of out
crops located. The glacier moved from the northeast to the
southwest in the Tib Lake area.
Most of the property is underlain by a gabbroic in
trusive (Figure 4). This intrusive was interpreted as late
Proterozoic in age by Kaye (1966). The present geological
mapping indicates that the gabbro is probably Archean in age
due to the fact that it is intruded by granitic rocks at
various localities and the primary banding of the gabbroic
intrusive is steeply dipping. The contact between the
gabbro and granite is located at or near the southern border
of the property.
The gabbro is locally well-banded (layered) with the
layering trending in an east-west direction and generally
dipping from 40 0 to 80 0 to the north. In the area covered
by,the property the gabbro consists of two phases. The
most southerly (possibly stratigraphically the oldest)
phase is medium to coarse-grained gabbro with pods of peg
matitic gabbro and numerous occurrences of sulfides. The
sulfides present are pyrite with minor chalcopyrite and
pyrrhotite. This coarse-grained phase may be repeated by
folding at the northeastern portion of the property. The
coarser-grained phase appears to represent the basal portion
10.
of gabbroic intrusive and is in contact with and intruded
by the granitic rocks.
The second phase of the gabbroic intrusive is generally
a fine to medium-grained gabbro that does not contain any
pegmatitic gabbro pods or sulfides but is commonly iron-
stained.
5.2.2 Geochemistry
During the period June 5 to June 13, 1982, soil samples
(313) were collected over the Tib Lake property. The soil
samples were taken from the A horizon of the soil profile
and analysed for Ni and Cu content by Atomic Absorption
method by X-Ray Assay Laboratories, in Don Mills, Ontario.
The results of the soil geochemical surveys (Appendix 2)
are presented on Figures 5 and 6 at a scale of 1:5,000.
The geochemical results have been statistically
treated and sub-divided into the following geochemical
classes:
Background - ^.70th percentile
Elevated Background - 70th ** 90th percentile
Positive - 90th^95th percentile
Anomalous - 9 5th ̂ .9 8th percentile
Strongly Anomalous - x 98th percentile
^^ Summary
for the Tib
Geochemical Class
Background
Elevated Background
Positive
Anomalous
Strongly Anomalous
Range
*Assay No. Pd
(ppb)
1735 3
1651 8
1652 10
1653 7
1654 5
1655 8
1656 17
Table 2
11.
of Statistical Parameters
Lake Soil Geochemical
Percentile Range
*,70
70*90
90 *95
95 *98
Z 9 8
Table 3
Assay Results
Pd ' Cu (ppb) (ppm)
*10 220
* 10 120
*10 95
*10 32
*10 110
^ 9 97
*-lQ 8 3
Survey
Cu Ni (ppm) (ppm)
30*42 20*24
42*50 24*27
50*70 27*33
r 70 233
2 - 130 ND - 65
Ni (ppm)
95
89
55
79
82
55
82
12,
A summary of the statistical parameters for the surveys
is presented in Table 2 and the results have been contoured
using the 70th, 90th, 95th and 98th percentile values as
contours (Figures 5 and 6) for the survey results.
The contoured results for both the Ni and Cu contents
of the soils show several features in common and the follow
ing conclusions can be from these results.
1) The values in the anomalous range (>95th percentile)
for both Cu and Ni show only spot highs and give little in
dication of the trend of mineralization.
2) Elevated background and positive values show
definite east-west trends that appear to map out the favour
able PGM bearing horizons within the intrusive as well as
horizons containing above background values of Cu and Ni.
3) The geochemical patterns do appear to be mapping
the bedrock geology with fair accuracy and are not greatly
influenced by glacial dispersion. The reason that soil
geochemistry appears to be an excellent exploration tool in
this area is attributed to the thin overburden cover which
means that much of the soil is essentially in place.
4) Seven rock samples were collected for assay
(Table 3) from sulfide occurrenpes. The results of these
assays were negative (Figure 4).
13,
5.2.3 Magnetometer Survey
The Tib Lake grid was surveyed using the EDA PPM 30O/
400 proton precession magnetometer system. The readings
were collected in the field using the PPM 300 field mag
netometer and the field readings were corrected for diurnal
variation at the end of each survey day by the PPM 400 base
station magnetometer that was set-up at the camp. The
corrected values were plotted at a scale of 1:5,000 and are
presented on Figure 7. The magnetic gradient in the survey
area is high and the data has been contoured using 62,000
and 65,000 gamma contour values. The contoured results show
the following:
1) Units within the gabbroic intrusion trend approxi
mately east-west.
2) The main PGM rich (K. Kuhner showing) showings
are located in areas of low magnetic response (^62,000
gammas) while some of the barren sulfide occurrences are
located in areas of higher magnetic response.
Appendix l
Technical Information
la - EDA PPM 300/400 Magnetometer
Ib - Soil Geochemistry
Appendix la
EDA PPM-30O Omnimag Field Magnetometerand
PPM-400 Omnimag Base Station Magnetometer
PPM-3DQ
OMNIMAQ MAGNETOMETER
Physical Dimensions
Width,,,,,,,..,.,,.,..,,..,..,, . Depth .,..,,..,...........,.,M.Height,..,,.',,...,,,,.,..,,.,,., Weight (complete with,,,,. 7,5 kg
Integral sensor poleand back pole)
Weight (not Including ...... 6.5 kgremote sensor)
Environment
Electronics Operating temperature ,, -400 C to *500 C
range Relative Humidity,,,,,,,, 95% (rain proof)
SensorTemperature range,.,,,,, -400 C to * 500C Relative Humidity ,,,,,.,, O to 99'tt {rain proof)
Principal Components
Sensor..,...................... Noise cancelling with at least 50 dBattenuation of external noise field, Faraday shield Incorporated. Magnetic cleanliness of the sensor Is consistent with the absolute accuracy of 0.1 y,
Sensor cable.....,............ There are no external cables on In-linesensor. Remote sensor Includes cable and Interface connector. r
Table 1*1 Technical Summary (Sheet 1 of 4)
1*3
Electronic Conabla ...,,.,,, Enclosure contains completemicroprocessor and battery pack, Front panel Includes liquid crystal display
1 (LCD), keypad and MODE selector.
Reference oscillator...,,,., Annual drift rate of 2 ppm.Temperature drift 5 ppm over the temperature range of -100 C to
, Internal battery pack.Power supply,,,,,,,M,
Specifications
Dynamic range...,.......... 18,000 to 93,000 yProcessing sensitivity i,,.,, 0.02 y
(total field) Statistical error/..,,,,,..,,,., 0.01 if
resolution Mathematical truncation.. 0.02 y
error Absolute accuracy......... 15 ppm et 230 C
50 ppm over operating temperaturerange.
Display resolution ,,,..,.... 0.1 y(total field)
Automatic tuning..,.,,M,,, ilB'K of least value Tuning method ,,,........,. Keyboard entry provides tuning
Increments of 1 ky from 18,000 to93,000 y. Microprocessor sets correcttuning frequency,
Tracking range,,,.,....,.,,, 18,000 to 93,000 y . Tuning mechanism,........ Sensor Is tuned under microprocessor
control,
.Table 1*1 Technical Summary (Sheet 2 of 4)
1*4
PPM-3OO
—— —— —— OMNIMAQ MAGNETOMETER Out of auto-tuning ,......... Descriptor on display (TUNE)
' range Indicator ' commences to flash on and offi Audioalarm activated also. (New field value must be entered Into system.)
Sampling rate ........,....... Actuated by keyboard command by a f 2.5 V logic level. Continuous sampling at maximum rates of 3.5 seconds.
Display ........M............... A single liquid crystal display (LCD)Indicator monitors the true RMS value of the precession signal and decay rate. Ruggedlzed, reflective LCD utilizing aluminum reflector. Temperature range-35'C to -f 500 C at 10096 RH. Clear visibility.
Visual MM...................... Six-digit readout with decimal point.- Character height: 0.700 In,
Display Readouts ..,.,,...... Refer to Table 4-3,Total field (y) ..........,,,, 62677.8 (From 18,000 to 93,000)Errors,,,,,,.,,,,,,,,,,.,,,Time. M. .M,...,,.,,....,.... H16:36i33Date M, M.., M, M, ...M.,.,., 81:08:19 Gradient ,,,.,,.M.,..,.M,M Applicable to PPM-500 only Line (Longitude) M,.,,,,.. L1000 (From O to 9999)
(main grid)Position (Latitude) ....... P500 (From O to 9999)
(main grid)Line spacing .,..,...,.,.,,. INTV L 99 (From O to 9999)
(main grid)Position spacing .......M. (NW P 66 (From O to 9999)
(main grid)
Table 1*1 Technical Summary (Sheet 3 of 4)
JTM/PPMM/lf.OMI/llO/QJM/DIJS
rLine (sub-grid).....,...... (.(Flashing) 1000 (From O to 9999)Position (sub-grid) , ttm . P(Flashlng) BOO (From O to 9999) Line spacing ,,.,,...,,,..,. INTV LI Flashing l 1000 (From O to
Isub-grldl 9999)Position spacing l titli ,,., INTV P(Flashlnfl) SOO (From O lo '
(ub-grld) 9999)Record data block,,,,,,,, RP 52677.8
number(Record pointer)
Manual record,,.,.,,,.,,., Lest position number on meln or sub-grid.
Auto Increment,,,,,.,.,.. Current position number (main or sub-rflcord 9*M incremented automatically by the
pre-programmed position IntervaHmaln T or sub-grid respectively). Jest veiue .M............... A synthetic total field test value of
57936.4 y. Stetlatlcel error test...... An artificial display of 0.00 y,
value ,
MODE selector M..............Refer to Teble 4-1.
Keypad selections,,,,.,,,.,, Refer to Table 4-2.
Record CapacityStandard .,,.,,,,..,,,,,,,,, Refer to Teble 4-4, Optional MMM.MMMMM.M Refer to Table 4-4.
1-5Table M Technical Summery (Sheet 4 of 4)
1-6
resulting data on the high visibility LCD. This unit has automatic power-off capability to prevent the unnecessary consumption of power. The standard sensor attached to the main electronics console leaves the operator with complete freedom from cables and the incessant problems they create. This unit can be upgraded at a .later date to higher capability levels by adding additional electronics,, memory and software subroutines.
PPM-300 Total Field Magnetometer
This model is the most advanced field magnetometer in the world. In addition to providing the total field magnitude and time, it also records on its internal solid state memory, the grid co-ordinates (line and station) and reading error. The non volatile memory can store up to 700 data blocks, therefore eliminating any need to record data manually. Accumulated data is regularly transferred into either of two Data Collection Units, the DCU-100 Thermal Printer or the DCU-200 Magnetic Cassette Recorder. The use of the latter unit permits the complete computer handling of data which includes background and diurnal corrections, automatic plotting and routine geophysical interpretation.
PPM-400 Base Station Magnetometer
This integral sensor and console package is the first magnet ometer specifically designed for base station applications, which include airborne and ground survey corrections. It's unique configuration allows it to be set up above the ground and away from hazards and local magnetic interferences. Unlike other base station magnetometers which have a limited number of switch selected sample periods and limited versatility, the PPM-400 is completely programmable through its keypad. This includes operator selection of either relative (differential) or absolute measurements. As in the PPM-300, all data is stored internally in a high capacity non-volatile memory which is transferred periodically into either the DCU-100 or DCU-200. Also unique to this instrument is a "snooze" alarm to conserve power. In simple terms, the microprocessor acts as an alarm clock and turns power-draining circuits off following each reading and automatically powers
. up just prior to taking a subsequent reading.
PPM-500 Magnetic Gradiometer
With a sensitivity of better than 0.1 nT per metre, the PPM-500 represents the world's first inexpensive high reliability vertical
;t
Fig-X . . Generalized - soil map of Canada using the new terminology (Canada Department of Agriculture, 1970) (excluding terminology for the Subarctic and Tundra).
CHHHOHI CNtnm UTIMTtt lootoosoow
Fig.2.' .. Generalized representation of the distribution of copper In four different types of soil. Distributions for podzol, chernozem and chestnut soils are based on data from the Soviet Union (Vinogradov, 19S9). The laterite distribution is based on data from ZeininV (1971)sln the laterite profile, insufficient information is available for the A horiton to permit generalizations. All values in ppm.
f From j
Soil geochemistry surveys were conducted on the Lac des
Iles area in Northwestern Ontario to outline Cu-Ni sulfide hori
zons associated with PGM mineralization.
The Lac des Iles area was considered suitable for soil
geochemical surveys because the overburden is relatively thin
and much of the soil would not have been transported from any
great distance by the glaciers.
The soil samples were taken from the A soil horizon
below the organic surface layer. This was done for two
reasons:
1) The survey areas are underlain by the podzolic
soils {Figure 1) . Base metal values will be concentrated in
the A and B soil horizons (Figure 2) . The concentrations of
base metals in the A horizon are not as high as in the B horizon
but should delineate any bedrock zones with anomalous concentrat
ions of base metals,
2) In addition to its technical merits, sampling the
A soil horizon allowed the samplers tp collect more samples per
day. This was an important consideration due to the limited
time available for the survey.
Appendix Ib
Soil Geochemistry
ASSftY L/BCk^TCRlLS 09-JUL-82 REPORT 1 5163 R cF. F ILE 10771-15 PA^E l
PH-3PH-4PH-5PH-6PH-7PH-8•PH-9PH-10PH-14PH-113PH-115PH-157PH-201PH-202PH-206PH-207PH-208PH-209PH-21CPH-211PH-212PH-213PH-215PH-216PH-217P-H-218PH-219PH-221Ph-222PH-223PH-224PH-225PH-226PH-227PH-228PH-229PH-230PH-231PH-232PH-233PH-235PH-236PH-237PH-238PH-239PH-240PH- 241PH-242PH-244PH-245PH-246 4~T,b L 4./CPh-247 fPN-1 l "EMrcJtPN-2PN-3PN-4
Soi/ Geochew/sirj -T. b Lakework by Sol*p*it 1182 NTS
100 l
9ft
lIK
Slu Of U. 30
20
4* So 80 to
M*-960
West m in Resources LimitedEASTERN CANADA MINING DIVISION
POM
Soil
VS
La/Ce Ont
We* by Sol*p*** NTS
14,
Selected Bibliography
Dunning, G.R., 1979: The Geology and Platinum Group Mineralization of the Roby Zone, Lac des Iles Complex, unpublished M.Se. Thesis, Carleton University, Ottawa.
Heenan, P.R., 1980 A Preliminary Report on the Boston Bay Property at Lac des Iles, Thunder Bay Mining Division, Ontario. Westmin Resources Limited Private Report.
Kaye, L., 1966: P.380 Preliminary Geological Map of the Tib-Jack Lakes Area.
Nicholls, P.R.J., 1981: Platinum Group Metals Generative Project Review of Economic and Geologic Factors Related to the Exploration for Platinum Group Metals. Westmin Resources Private Report.
l JJ™.JWr.J .Day L Mo-1 J^-l-Napne and Address of Author (of Geo-Technical report)
Credits Requested per Each Claim in Columns at right___ Mining Claims Traversed (Lisf in numerical sequenceSpecial Provisions
For first survey:Enter 40 days. (This includes line cutting)
For each additional survey: using the same grid:
Enter 20 days (for each)
Man Days
Complete reverse side and enter total (s) here
Geophysical ^^
- Electromagnetic :
- Magnetometer | f) 4~)
- R adiometric
- Other
Geological
Geochemical
rborne Credits
Geophysical
- Electromagnetic
- Magnetometer
- Radiometric
- Other
Geological
Geochemical
Days per Claim
Days perClaim
Note: Special provisions i Electromagnetic credits do not apply to Airborne Surveys, i Magnetometer
Radiometric
Expenditures (excludes power stripping)Ty,'e of Work Performed
Perfo r med on Claim(s)
Calculation of Expenditure Days Credits
Total ExpendituresTotal
Days Credits
InstructionsTotal Days Credits may be apportioned at the claim holder's choice. Enter number of days credits per claim selected in columns at right.
Mining ClaimPrefix
1&Number
q//
Expend. Days Cr.
Mining ClaimPrefix Number
Expend. Days Cr.
c'tN y 1983
^ INING 1ANOS-SECT OFT
Total number of mining
y
fr /fRecorded Hofder or Ageot (Si/rJaturei
Certification Verifying Report of WorkWl hereby certify that t have a personal and intimate knowledge of the facts set forth *n the Report of Work annexed hereto, having performed the workOf witnessed same during and/or after its completion and the iuinexoo import ^ t'ue
Name and Postal Address of Person Certifying
Date Certified Certified tay*Signatur*
1362 181/9)
KNUTCKUHNER 4-409
V ONT
RECEIVED
FEB27B84
MANAGEMEHt BRANCH
H74
U i-*-*-
Your File: 140 Our File: 2.5610
1984 02 20
Mr. K.C. Kuhner 14 - 409 Egan Street Thunder Bay* Ontario P7A 2X2
Dear Sir:
RE: Geophysical (Magnetometer), Geochenlcal and Geological survey over mining claims TB 645906 to 15 Inclusive In the Area of Tib Lake.—^——--—--l-.11.—-.——^..^——
Enclosed Is the geological plan, In duplicate, for the above mentioned survey. The outcrops should be designated by colour, and the character of the overburden should be Indicated 1n areas of no outcrop. Please correct and return the plans to this office.
For further Information, please contact Mr. F. W. Matthews at (416) 965-1380.
Mrs. Audrey HayesMining RecorderMinistry of Natural ResourcesP.O. Box 5000Thunder Bay, OntarioP7C 566
Dear Madam:
Vie have received reports and maps for a Geophysical (Magnetometer) Geological and Geochemical survey submitted under Special Provisions (credit for Performance and Coverage) on mining claims TB 645906 et al 1n the Area of Tib Lake.
This material will be examined and assessed and a statement of assessment work credits will be Issued.