surface mapping petrological study & lithogchem … · has a strike 200 deg, and dip 65 deg,...
TRANSCRIPT
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Placer Dome (CLA) LimitedCampbell Mine
KRL 1184170 (McKenzie Island) Surface Mapping, Petrological Study and Lithogeochemical
Sampling Dome Township, Ontario
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AUG O 9 2004
GEOSCEMCE ACSH
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July 2004 Yuri Dobrotin
52N04SW2078 2.28228 DOME 010
Table of Contents
Property............................................................................................................................... 3Location and Access........................................................................................................... 3Previous Work ....................................................................................................................4General Geology................................................................................................................. 4Property Geology................................................................................................................ 4Mineralization..................................................................................................................... 5Structure.............................................................................................................................. 5Mapping, Thin-section Collection and whole rock lithogeochemical Sampling................ 5Soil Sampling...................................................................................................................... 6Recommendations............................................................................................................... 6Certificate of Qualifications................................................................................................ 8
Figures:
Figure l
Figure 2
Figure 3
Figure 4
Figure 5
Location Map, Scale 1:50 000
McKenzie Island Claim KRL 1184170 Sampling Plan, Scale 1: 5000
Geological Map, Areas of 1999 and 2004 Sampling, Scale l: 5000
Example of the rock sampling (AA 310203) and shear zone.
Thin section sample location
Appendices:
Appendix l Appendix 2 Appendix 3 Appendix 4 Appendix 5 Appendix 6
ALS Chemex Lab InvoicesPeter H. Thompson Geological Consulting Ltd. InvoiceALS Chemex Analytical Certificate (Rock Samples)ALS Chemex Analytical Certificate (Soil Samples)Petrographic Study ResultsBoat Rental Invoice
Summary and Conclusions
During July 2004, geological mapping, thin section collection and a total of 6 whole rock lithogeochemical samples and 12 soil samples were collected and analyzed over the claim KRL 1184170, located on the McKenzie Island, Dome Township Property. The purpose of the work was to follow the anomalous gold and trace-element values, received after the previous phase of work on the claim (Year 2002, W0220.01282) and increase the knowledge of the petrology and identify the vectoring of alteration and mineralization. Mapping of the lithology of the area shows presence of felsic to intermediate flows and tuffs. Quartz veins, up to 20 cm in thickness, containing pyrite, arsenopyrite and chalcopyrite, hosted in the silicified intermediate to felsic volcanic rocks, were sampled.
In conclusion, the 2004 mapping and sampling enhanced the understanding of the geology, rock type and alteration identification and lithogeochemical sampling became a basis of multi-element analysis to compare the property with the known deposits in the region. Analysis of the B-horizon soil sampling results will increase understanding of the multi-element zonation on the property. Anomalous gold and trace-elements value suggest potential of the area.
Introduction
The claim KRL 1184170 (McKenzie Island) is located in the northern part of the McKenzie Island, Dome Township, Kenora-Red Lake Mining Division (Figure 1). During July of 2004, an exploration program, consisting of geological traversing, mapping, soil sampling, thin-section collection and lithogeochemical sampling and analysis was conducted on claim KRL 1184170. The mapping was focused on the area where previous work returned anomalous gold and trace-element values around the historic trenches. Soil sampling was performed across the claim group to estimate the multi-element zonation.
Property
The claim KRL 1184170 is composed of two 16-hectare claim units in Dome Township, Red Lake Mining Division. Originally it was recorded by PDC on August 8, 1994.
Location and Access
The property is located on the west side of McKenzie Island, Dome Township, Ontario, between latitudes 51 004'10" and 51 004'28" and longitudes 93 0 51"12" and 93 051'32", NTS 52 N/4. Depending on the season, access can be made either via boat or snow machine to the west shore of the island followed by a 100m traverse to the northern
boundary of the claim (Fig. 1). Access can also be made via numerous cross-country ski trails that cut through the property.
Previous Work
The first recorded work in the area was done by South McKenzie Island Mines Limited and consisted of a programme of stripping, trenching and diamond drilling (5 holes totaling 185m). No work was recorded on the property until 1980 when Gold Fields Resources Ltd. staked the area and performed a programme of geological mapping, magnetometer and V.L.F. surveys in 1981 (Cameron, 1981; Boniwell, 1981; Chute, 1982), as well as detailed I.P. surveys, a geochemical humus sampling survey in 1982 (Seara, 1983; Bald and Cameron, 1983) and power stripping in 1983 (Cameron, 1983).
In August 1986, Dighemlll airborne magnetic and electromagnetic surveys were carried out over the property by Noramco Explorations Inc. (Smith, 1986). Pure Gold Resources Ltd. conducted geological fieldwork in the area during the fall of 1986 (Rusk, 1986). Their work examined the known showing in the east-central part of the property and enlarged upon the known associated zone of silicification.
During February 1987, Noramco Explorations, Inc., the operator for Pure Gold Resources Ltd., conducted 388.8m of diamond drilling on the property (Donaldson, 1987). The highest Au values were reported from a felsic tuff unit (600 ppb Au).
Placer Dome performed limited exploration on the property in 1999 and 2002. Soil geochemistry was performed in 1999. Elevated values were recorded for gold, silver, and arsenic. Rock sampling and MMI sample line was done in 2002, which confirmed the anomaly.
General Geology
The property lies within the east-west trending Red Lake greenstone belt of the Uchi Subprovince of the Archean Superior Province of the Canadian Shield. In the Red Lake area, the belt consists mainly of volcanic rocks with lesser amounts of clastic sedimentary rocks and is bounded on all sides by large granitic batholiths.
Property Geology
The property is underlain by felsic metavolcanics (tuff, crystal tuff and agglomerate), minor intermediate to felsic metavolcanics (tuff and flow). Alteration is presented by intense silicification and minor carbonization. Bedding is oriented northeast (NE) to southeast (SE) and is steeply dipping variably to the north and south. Quartz veining in the stripped and trenched area is orientated at 0600 and ranges from a few centimeters to 20 centimeters in width.
Mineralization
Finely disseminated pyrite is present in numerous outcrops throughout the property. In the stripped and trenched area, disseminated pyrite and arsenopyrite occurs in the felsic tuff, and pyrite, arsenopyrite and chalcopyrite are associated with the quartz veining. Anomalous gold values were historically defined in the quartz vein as well as the silicified zone associated with the quartz veining.
Structure
The rocks outcropping on the property are relatively un-deformed with the exception of the stripped and trenched areas. Bedding in the felsic volcanics varies from 022 0 to 085 0 azimuth dipping northwest at 480 to 900 . Near the stripped and trenched areas, the rocks begin to display deformation with the development of foliation, which varies from 045 0 to 0900 azimuth, dipping steeply northwest to vertical. The mapped shear zone (Fig. 5) has a strike 200 deg, and dip 65 deg, NW. Cleavage has a strike 335 deg, dip 45 deg, NE.
Mapping, Thin-section Collection and whole rock lithogeochemical Sampling.
Previous sampling performed by Placer Dome (CLA) Ltd, Campbell Mine in 2002, returned elevated values for gold in two samples: BO7159 - 159.0 ppb and BO7160 - 421 ppb, with anomalous arsenic values - 445 ppm and 15 ppm respectively. Additional sampling of this area was done in purpose to confirm the anomalous values and estimate the lithogeochemical multi-element features, which can be an indicator of deep mineralization.
Six samples, described in the Table I., were collected from the area. Analytical results are presented in the Appendix 3. Four thin sections were collected around and from the silicified shear zone (Fig. 2). The petrographic study will show the alteration styles and will set the correlation with a multi-geochemical analysis.
Table l. Rock Samples
Sample #
AA 3 10201AA 3 10202
AA 3 10203
AA 3 10204
EastingUTM, NAD 27
440261440237
440258
440244
NorthingUTM, NAD 27
56581785658155
5658174
5658169
Description
Silicified quartz latiteQuart vein w/ pyroty/pyrrhotite hosted in quartz latiteSheared quartz latite. Dip Az 220 deg, Dip 65 deg.Quart vein w/ pyroty/pyrrhotite hosted in quartz latite
AA 3 10205AA 3 10206
440238440237
56581655658160
Silicified quartz latiteMassive quartz latite
Soil Sampling
Soil sampling was performed across the property in order to estimate the multi-element zonation, reflected on the B-horizon soils, on the northern part of the area, which was never sampled historically. The collected material was presented by brown soils, brown clay and sandy clay from the well-developed B-horizon. Sampling was done using the auger; coordinates were taken using GPS. Samples were submitted to the ALS Chemex laboratory in Vancouver. The description of the samples and their coordinates are presented in Table 2. Analytical results are presented in the Appendix 4.
Table 2. Soil Samples
Number350351352353354355356357358359360361
EastingUTM, NAD 27 440250 440250 440227 440178 440139 440115 440063 440006 439950 439918 439890 439890
NorthingUTM, NAD 27 5658217 5658210 5658252 5658349 5658341 5658318 5658301 5658279 5658270 5658295 5658316 5658305
Descriptionbrown claybrown claybrown claybrown soilbrown soilbrown soilbrown soilbrown clay
beige sandy/siltbeige sandy/silt
brown sandy soilbrown clay
Remarks
Claim Post 1184170
Recommendations
Based on the 2004 work, it is recommended to analyze the multi-element distribution in order to assess the alteration halos and identify the possibility of deep meneralization, which does not have a surface expression. Comparison with the petrographic study will establish the correlation of the geochemistry and mineralogy.
References
Horwood, B.C. 1940:Forty-ninth Annual Report of the Ontario Department of Mines, Vol. XLIX, Part II, Geology and Mineral Deposits of the Red Lake Area, p. 156-167.
Bald R.C., Cameron D.M., 1984:Geochemical Report and Chemical Analyses on The McKenzie Island Claim Group and McCarney Claims.
Glen Kuntz, 1999:McKenzie Island Property Soil geochemistry Survey for Claim 1184170, Ontario, Placer Dome (CLA) Limited, 52N/4.
Yuri Dobrotin, 2002:McKenzie Island Property Report on 2002 Assessment Work Dome Township, Ontario52/N/4
Certificate of Qualifications
I hereby certify that:
I have been a resident of Canada since 1996, and a Canadian Citizen since 2002.
I am a graduate of St. Petersburg University, Russia.
I have actively been engaged in Exploration Geology since 1979.
APGO # 0702
Signed at Balmertown, Ontario on the 02nd of May, 2003
Yuri Dobrotin, P. Geo Senior District Geologists Placer Dome (CLA) Ltd Campbell Mine
Claim KRL 1184170
Fig. l Location Map Scale 1:50 000
Lithogeochem Samples
Fig. 2 McKenzie Island Claim KRL 1184170 .Sampling Plan^—^^^—^
Scale 1: 5000UTM, MA
Legend
KRL 11 84170
Rock Samples 2004A
Soil Samples
Felsic M eta volcanics
1999 SoilSampling Area
Outcrops
Fig. 5 Geological Map, Areas of 1999 and 2004 Sampling
Fig. Example of the rock sampling AA 310203 (left) and shear zone (right)
10m
Thin section
Strike,220, dip 65
Strike 335 dip 45"
Fig . 5 Thin section sample location
Appendix l
ALS Chemex Lab Invoices
wieinex inunaer bayALS Chemex - GEMS Webview - Invoice Details
Invoice Details1118151 : Created
@004
Page l of l
Workorder:
Client: Address:
Phone:Fax:Comments:
1604047992 Mo C1
Placer Dome North America Campbell Mine POBoxlO Balmertown ON POV1 CO Canada
+1 (807) 735-2075 +1 (807)735-5012
Client Code:
Invoice Date:Project:PO Number:Quote:CPT:Terms:
Billing Entity: Discount:
QDF
2004-07-27 (SYSTEM) McKenzie Island
cnvp528qdf .04q ' Soite-- Florek Net 30 Days
ALSL 35
Quantity
1 6 6 6 6 O 6
Code Description
BAT-01 Administration FeeME-MS61 47 element four acid ICP-MSME-MS61 i ICP-MS elements for ME-MS61ME-ICP61 i ICP-AES elements for ME-MS61GEO-4A01 Four Acid Dig - ME-MS61PREP-31 Crush, Split, PulverizePREP-31 Crush, Split, Pulverize
Unit Price0.0018.280.000.003.660.205.85
SUBTOTALGST R1 00938885 (7eXo)
PST ON (807o)TOTAL PAYABLE (CAD)
Total Price0.00
109.680.000.00
21.960.00
35.105
S
i 166.74111.67
S 0.00i 178.41
http://webview.co^p.alsglobal.o^g/cs/invinfo.asp?txtInvoice=l 118151 7/29/2004
UY/2H/U4 THU 09:27 FAA 7970106 ALS Chemex Thunder Bay
Invoice Details
1118516: Created
iioos Page l of]
Workorder: TB04Q45J375 info CI
Client: Address:
Phone:Fax:Comments:
Placer Dome North America Campbell Mine PO Box 10 Balmertown ON POV1 CO Canada
+1 (807) 735-2075 +1 (807) 735-5012
Client Code:
Invoice Date:Project:PO Number:Quote:CPT:Terms:
Billing Entity: Discount:
QBF
2004-07-28 (SYSTEM) McKenzie Island
cnvp528qdf.04q Soils - Florek Net 30 Days
ALSL 35
Quantity
112
1.951212121212121212
1.9512
Code Description
BAT-01 Administration FeeDRY-22 Drying - Maximum Temp 60CDRY-22 Drying - Maximum Temp 60C
ME-MS41 50 element aqua regia ICP-MSGEO-AR01 Aqua regia digestionAU-ICP21 Au 30g FA ICP-AES FinishME-MS41J ICP-MS elements for ME-MS41
GEO-4ACID Four acid "near total" digFA-FUS01 Fire Assay Fusion 30gME-ICP41 i ICP-AES elements for ME-MS41ME-ICP61 27 element four acid ICP-AESPREP-41 Dry, Sieve (180 um) SoilPREP-41 Dry, Sieve (180 um) Soil
Unit Price0.001.850.1315.852.4413.160.003.660.000,008.051.141.22
SUBTOTALGST R100938885 (77o)
PST ON (8^TOTAL PAYABLE (CAD)
Total Price0.00
22.200.25
190.2029.28157.920.00
43.920.000.00
96.602.2214.64
S 557.23S 39.01$0.00
S 596.24
http://webview.co^p.alsglobal.org/cs/invinfo.asp?txtInvoice=l 118516 7/29/2004
Appendix 2
Peter H. Thompson Geological Consulting Ltd. Invoice
10
Peter H. Thompson Geological Consulting Ltd.
Invoice
Date: July 23, 2004 File Reference: rl-mkisl Invoice Number: 1086
TO: Yuri DobrotinPDG ExplorationPlacer Dome (CLA) Ltd.Campbell MineBox 10, Mine Road,Balmerstown, Ontario, CanadaPOV1CO
RE: Red Lake - McKenzie Island Petrography
For professional services:
3.0days@S6007day....................................................................S 1,800.00(petrography, photomicrography, analysis, interpretation, report/data base)
GST(707o. GST Number 895902930)................................. 126.00Subtotal professional services................................... 3 1,926.00
Related expenses:
Thin sections (6 regular @S11.00 each)........................................... 3 66.00
TOTAL FEES AND EXPENSES DUE UPON RECEIPT
Detailed particulars supplied upon request.
$ 1 .992.00
Peter H. Thompson, Ph.D., P.Geol. President
75 Fairmont Avenue, Ottawa ON Canada K1Y 1X4; Tel/Fax: (613) 722-8219 e-mail: [email protected]
Appendix 3
ALS Chemex Analytical Certificate (Rock Samples)
11
ALS ChemexEXCELLENCE IN ANALYTICAL CHEMISTRYALS Canada Ltd.212 Brooksbank AvenueNorth Vancouver BC V7J 2C1 CanadaPhone: 604 984 0221 Fax: 604 984 0218
To: PLACER DOME NORTH AMERICA CAMPBELL MINE PO BOX 10 BALMERTOWN ON POV 1CO
Page: 1Finalized Date: 1-AUG-2004
Account: QDF
CERTIFICATE TB04047992
Project: McKenzie Island P.O. No.:This report is for 6 Rock samples submitted to our lab in Thunder Bay, ON, Canada on 27-JUL-2004.The following have access to data associated with this certificate:
Y DOBROTIN
SAMPLE PREPARATIONALS CODE DESCRIPTION
WEI-21 Received Sample Weight PUL-31 Pulverize split to 85"Xo ^5 um SPL-21 Split sample - riffle splitter CRU-31 Fine crushing - 700Xo ^mm LOG-22 Sample login - Red w/o BarCode
ANALYTICAL PROCEDURESALS CODE DESCRIPTION
M E-MS61 47 element four acid ICP-MS
To: PLACER DOME NORTH AMERICA ATTN: Y DOBROTIN CAMPBELL MINE POBOX10 BALMERTOWN ON POV 1CO
This is the Final Report and supersedes any preliminary report with this certificate number. Results apply to samples as submitted. All pages of this report have been checked and approved for release. Signature:
^LSO
ALS CtiemexEXCELLENCE IN ANALYTICAL CHEMISTRYALS Canada Ltd.212 Brooksbank AvenueNorth Vancouver BC V7J 2C1 CanadaPhone: 604 984 0221 Fax: 604 9840218
To: PLACER DOME NORTH AMERICA CAMPBELL MINE POBOX10 BALMERTOWN ON POV 1CO
Project: McKenzie Island
Page: 2 - ATotal#Pages: 2 (A-D)
Finalized Date: 1-AUG-2004Account: QDF
L CERTIFICATE OF ANALYSIS
Method Anilyto
Unit* Sample Description LOR
31201 31202 31203 31204 31205
31206
WEI-21 ME-MS61 ME-MS61 ME-MS61 ME-M361 ME-MS61 ME-MS61 ME-MS61 ME-MS61 RocvdWt. AB Al At B* B* Bl Cm Cd
kg ppm y, ppm ppm ppm ppm K ppm 0.02 0.01 0.01 0.2 10 0.05 0.01 0.01 O.O2
1.15 0.08 5.84 1250 280 0.63 0.11 2.37 0.08 1.21 0.09 3.14 3670 170 0.35 0.31 1.08 0.12 0.69 0. 01 7.61 104.5 700 1.2 0.14 1.21 0.08 0.63 O.01 7.93 11.7 350 0.69 0.11 1.64 0.05 0.63 O.01 8.12 3.3 770 0.99 0.08 0.83 0.03
0.50 O.01 7.38 2.5 860 0.91 0.18 1.5 0.05
ME-MS61 ME-MM1 ME-MS61 Co Co Cr
ppm ppm ppm 0.01 0.1 1
20.3 5.9 32 15.95 3.4 14 37.5 4.2 20 24.1 13.8 62 36.2 7 24
25 6.5 13
TB04047992
ME-MS61 ME-MS61 ME-MS61 C* CU Fo
ppm ppm •Vb 0.05 0.2 0.01
1.44 11.2 1.52 0.92 17 1.22 2.74 8.9 1.72 6.84 6.8 2.73 2.85 13.4 1.86
4.48 1 0 2.44
Comments: REE's may not be totally soluble in MS61 method.
ALS ChemexEXCELLENCE IN ANALYTICAL CHEMISTRYALS Canada Ltd.212 Brooksbank AvenueNorth Vancouver BC V7J 2C1 CanadaPhone: 604 984 0221 Fax: 604 984 0218
To: PLACER DOME NORTH AMERICA CAMPBELL MINE PO BOX 10 BALMERTOWN ON POV 1CO
Project: McKenzie Island
Page: 2 - BTotal # Pages: 2 (A - D)
Finalized Date: 1-AUG-2004Account: QDF
1 CERTIFICATE
Method AnalyU
Untta Sample Description LOR
31201 31202 31203 31204 31205
31206
OF ANALYSIS
ME-MS61 ME-MS61 ME-MS61 ME-MS61 ME-MS61 ME-MS61 ME-MS61 ME-MS81 ME-MS61 ME-MS61 ME-MS61 ME-MS61 Oa G. Ht In K La U Ma Mn Mo Na Nb
ppm ppm ppm ppm 'it ppm ppm "A ppm ppm "At ppm O.OS 0.05 0.1 0.005 0.01 0.8 0.2 0.01 S 0.05 0.01 0.1
12.9 0.09 1.5 0.013 1.44 10 9.8 0.37 313 0.63 7.38 0.08 1 0.012 0.82 8.6 6.1 0.22 192 0.77 19.15 0.11 2.8 0.022 3.15 18.8 18.4 0.64 277 0.4 18.4 0.11 2.5 0.023 1.98 11.6 26.5 0.81 471 0.55 19.9 0.1 2.8 0.019 2.64 17.7 22.1 0.56 251 2.56
17.6 0.11 2.9 0.019 2.27 11.8 30.5 0.73 274 1.9
1.87 3 0.9 1.9
0.53 6.7 2.59 4.7 2.41 5.4
1.43 5.6
TB04047992
ME-MS61 ME-MS61 ME-MS61 Nl P Pb
ppm ppm ppm 0.2 10 0.5
9.3 410 10,2 5.5 230 15.3 7.3 270 5.9 26.6 410 8.6 12.6 490 4.1
9.4 430 7.5
Comments: REE's may not be totally soluble in MS61 method.
ALS diemexEXCELLENCE IN ANALYTICAL CHEMISTRYALS Canada Ltd.212 Brooksbank AvenueNorth Vancouver BC V7J 2C1 CanadaPhone: 604 984 0221 Fax: 604 984 0218
To: PLACER DOME NORTH AMERICA CAMPBELL MINE POBOX10 BALMERTOWN ON POV 1CO
Project: McKenzie Island
Page: 2 - CTotal#Pages: 2 (A-D)
Finalized Date: 1-AUG-2004Account: QDF
1 CERTIFICATE OF ANALYSIS
M.thod Anilyt*
Unit* Sampl* Description LOR
31201 31202 31203 31204 31205
31206
ME-MS61 ME-MS61 ME-MS61 ME-MS61 ME-MS61 ME-MS61 ME-M361 ME-MSC1 ME-MS61 Rb R* S Sb S* Sn Sr fm T*
ppm ppm % ppm ppm ppm ppm ppm ppm 0.1 0.002 0.01 0.05 1 0.2 0.2 0.05 0.05
56.2 -:0.002 0.09 3.32 ^ 0.5 200 0.26 ^.05 32.9 -:0.002 0.29 6.26 1 0.4 78.4 0.2 -:0.05 115.5 <0.002 0.01 0.95 -ci 1.6 108 0.94 ":0.05 71.3 <0.002 <0.01 0.49 -:1 0.7 264 0.51 ^.05 102.5 O.002 0.01 0.77 -:1 1 178 0.59 <0.05
88.7 ^.002 0.01 0.92 <1 0.9 345 0.64 -:0.05
ME-MS61 ME-MS61 ME-MS61 Tb, Tl Tl
ppm K ppm O.2 0.005 0.02
3.4 0.158 0.36 2.9 0.071 0.19 10.2 0.114 0.69
5 0.302 0.45 7.3 0.226 0.53
7.2 0.222 0.47
TB04047992
ME-MS61 ME-MS61 ME-MS61 U V W
ppm ppm ppm 0.1 1 0.1
1 33 5.9 1 15 5.5
3.6 18 5.6 1.5 90 0.8 2.6 38 3
2.5 36 0.9
Comments: REE's may not be totally soluble in MS61 method.
ALS CliemexEXCELLENCE IN ANALYTICAL CHEMISTRYALS Canada Ltd.212 Brooksbank AvenueNorth Vancouver BC V7J 2C1 CanadaPhone: 604 984 0221 Fax: 604 984 0218
To: PLACER DOME NORTH AMERICA CAMPBELL MINE POBOX10 BALMERTOWN ON POV 1CO
Project: McKenzie Island
Page: 2 - DTotal # Pages: 2 (A - D)
Finalized Date: 1-AUG-2004Account: QDF
CERTIFICATE OF ANALYSIS TB04047992
Anllyt* Itait*
Sampl* Description LOR
ME-M361 ME-MS61 ME-MS61
Y Zn Zr
ppm ppm ppmO.1 2 O.S
3120131202312033120431205
4,1 2.5 8.2 6.4 7.2
4231466829
56.637.583.791.9101.5
31206 6.4 44 105
Comments: REE's may not be totally soluble in MS61 method.
Appendix 4
ALS Chemex Analytical Certificate (Soil Samples)
12
ALS CtiemexEXCELLENCE IN ANALYTICAL CHEMISTRYALS Canada Ltd.212 Brooksbank AvenueNorth Vancouver BC V7J 2C1 CanadaPhone: 604 984 0221 Fax: 604984 0218
To: PLACER DOME NORTH AMERICA CAMPBELL MINE PO BOX 10 BALMERTOWN ON POV 1CO
Page: 1Finalized Date: 4-AUG-2004
Account: QDF
CERTIFICATE TB04045875
Project: McKenzie IslandP.O. No.:This report is for 12 Other samples submitted to our lab in Thunder Bay, ON, Canada on28-JUL-2004.The following have access to data associated with this certificate:
Y DOBROTIN l l
SAMPLE PREPARATIONALS CODE
SCR-41 LOG-22 DRY-22
DESCRIPTION
Screen to -1 80um and save both Sample login - Red w/o BarCode Drying - Maximum Temp 60C
'
ANALYTICAL PROCEDURESALS CODE
AU-ICP21 ME-ICP61 ME-MS41
DESCRIPTIONAu 30g FA ICP-AES Finish 27 element four acid ICP-AES 50 element aqua regia ICP-MS
INSTRUMENT
ICP-AES ICP-AES
To: PLACER DOME NORTH AMERICA ATTN: Y DOBROTIN CAMPBELL MINE PO BOX 10 BALMERTOWN ON POV 1CO
"his is the Final Report and supersedes any preliminary report with this certificate number. Results apply to samples as submitted. All pages of this report have been checked and approved for release. Signature:
ALS CtiemexEXCELLENCE IN ANALYTICAL CHEMISTRYALS Canada Ltd.212 Brooksbank AvenueNorth Vancouver BC V7J 2C1 CanadaPhone: 604 984 0221 Fax: 604984 0218
To: PLACER DOME NORTH AMERICA CAMPBELL MINE PO BOX 10 BALMERTOWN ON POV 1CO
Project: McKenzie Island
Page: 2 - ATotal # Pages: 2 (A - F)
Finalized Date: 4-AUG-2004Account: QDF
h f-
MethodAnalyte
Units imple Description LOR
SO!51
S2S3•54
i55i56;57.58.59
.60
ME-MS41 ME-MS41 ME-MS41 ME-MS41Ag Al A* B
ppm "K, ppm ppm 0.01 0.01 0.1 10
0.14 1.53 10.5 -OO0.09 1.38 9.3 *100.07 0.58 26.6 "100.08 1.72 4.8 t100.02 0.91 10.9 -OD
0.07 2.5 7.5 -MO0.04 1.1 7.3 *100.09 2.24 4.3 •elO0.08 2.04 9.6 *100.02 1.89 4.5 <10
"0.01 1.36 13.2 *100.07 2.49 3.2 <10
CERTIFICATE
ME-MS41 ME-HS41 ME-MS41Ba Be Bl
ppm ppm ppm 10 0.05 0.01
90 0.61 0.1570 0.76 0.1520 0.1 0.1280 0.57 0.1640 0.16 0.1
110 0.55 0.18100 0.26 0.09130 0.73 0.16120 0.62 0.1680 0.46 0.1470 0.31 0.13120 0.9 0.18
ME-MS41 ME-MS41Ca Cd•it ppm
0.01 0.01
0.29 0.090.19 0.10.13 0.050.36 0.050.26 0.040.39 0.040.31 0.140.43 0.060.43 0.070.32 0.050.19 0.070.41 0.02
ME-MS41C*
ppm 0.02
44.438.313.4530.418.2548.223.250
44.234.716.948.8
OF ANALYSIS
ME-MS41Co
ppm 0.1
9.213.72.510.65.5
13.98.913.113.310.1
7.110.9
ME-MS41Cr
ppm 1
3639274330
5930494642
3752
TB04045875
ME-MS41C*
ppmO.O5
1.632.030.662.231.122.711.062.652.362.051.432.56
ME-MS41Cu
ppm 0.2
12.311.64.310.4
419.2
611.612.111.86.514.8
ME-MS41Fe
0.01
2.041.991.152.281.55
3.361.622.812.622.36
1.942.97
l
\
ALS criemexEXCELLENCE IN ANALYTICAL CHEMISTRYALS Canada Ltd.212 BrooksbankAvenueNorth Vancouver BC V7J 2C1 CanadaPhone: 604 984 0221 Fax: 604984 0218
To: PLACER DOME NORTH AMERICA CAMPBELL MINE PO BOX 10 BALMERTOWN ON POV 1CO
Project: McKenzie Island
Page: 2 - BTotal # Pages: 2 (A - F)
Finalized Date: 4-AUG-2004Account: QDF
CERTIFICATE
MethodAnalyteUnits
imple,pescription LOR
SO;51i52;53.54
i55;56•57•58•59
.6081
, r?
ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41Ga G* Hf Hg In K La
ppm ppm ppm ppm ppm It ppm 0.05 0.05 0.02 0.01 0.005 0.01 0.2
5.76 0.07 0.08 0.02 0.022 0.21 18.67.34 0.07 0.05 0.02 0.022 0.05 16.32.78 -:0.05 0.02 0.03 0.007 0.04 5.86.61 0.08 0.11 0.02 0.023 0.27 154.89 0.05 0.05 0.01 0.01 0.04 8.3
8.5 0.09 0.18 0.02 0.026 0.26 17.45.04 0.05 0.03 0.03 0.014 0.07 11.28.19 0.08 0.14 0.02 0.026 0.29 18.47.75 0.08 0.14 0.02 0.025 0.26 17.96.29 0.07 0.1 0.01 0.02 0.16 14.4
5.41 0.07 0.07 0.02 0.013 0.05 8.28.49 0.1 0.25 0.01 0.026 0.37 24.2
ME-MS41 ME-MS41LI Mg
ppm "K, 0.1 0.01
19.8 0.5829 0.295.4 0.1429.5 0.7714.9 0.35
32.2 0.987.4 0.3736 0.92
31.5 0.8424.8 0.69
17.1 0.2835.9 0.82
OF ANALYSIS
ME-MS41 ME-MS41Mn
ppm5
65613467
454180
5031395546698416
132326
Moppm 0.05
0.510.560.340.580.33
0.30.290.270.30.27
0.370.71
ME-MS41Na•X,
0.01
0.01O.01O.010.02
*0.01
0.010.010.010.010.01
t0.010.01
TB04045875
ME-MS41Nb
ppm 0.05
2.182.211.512.221.91
2.11.852.292.481.8
2.351.78
ME-MS41Nl
ppm 0.2
20.822.68.9
23.812.9
31.213.531.827.822.5
19.830
1 ME-MS41P
ppm 10
3201480400360490
340480310370320
1440 i240
l
l
^VL^
ALS cnemexEXCELLENCE IN ANALYTICAL CHEMISTRYALS Canada Ltd.212 Brooksbank AvenueNorth Vancouver BC V7J 2C1 CanadaPhone: 604 984 0221 Fax: 604 984 0218
To: PLACER DOME NORTH AMERICA CAMPBELL MINE PO BOX 10 BALMERTOWN ON POV 1CO
Project: McKenzie Island
Page: 2 - CTotal # Pages: 2 (A-F)
Finalized Date: 4-AUG-2004Account: QDF
i
MethodAnalyt*
Units imple Description LOR
i50;51iS2153;54
;55 ,,i5657;58;59;60;61
, IlJ
ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41Pb Kb He S Sb
ppm ppm ppm *K ppm 0.2 0.1 0.001 0.01 0.05
7.7 44.3 O.001 O.01 0.27.6 35.3 O.001 O.01 0.29.8 7.5 O.001 0.01 0.497.6 62.5 0.001 O.01 0.145 16.5 O.001 O.01 0.14
9.9 53.2 0.001 O.01 0.195.7 15.1 O.001 O.01 0.177.9 62.3 O.001 O.01 0.137.9 54.6 O.001 O.01 0.197.2 38.9 O.001 O.01 0.13
7.2 13.8 O.001 O.01 0.179.3 62.5 O.001 O.01 0.09
dME-MS41 ME-MS41
Se S*ppm ppm 0.1 0.2
4.2 0.64.1 0.61 .2 0.34.6 0.52.3 0.3
5.6 0.52.9 0.35.8 0.55.4 0.44.2 0.4
2.4 0.46.3 0.6
CERTIFICATE
ME-MS41Sn
ppm 0.2
11
0.60.90.6
1.10.91.41.31.1
0.61.2
ME-MS41Sr
ppm 0.2
24.923.58.7
26.114.7
28.721.831.630.224.5
13.429.4
OF ANALYSIS
ME-MS41 ME-MS41Ta
ppm 0.01
"0.01O.010.01"0.01"0.01
0.01O.01O.01O.01O.01
O.010.01
T*ppm 0.01
0.020.020.010.010.01
0.030.010.020.020.02
0.020.01
ME-MS41Th
ppm 0.2
43
1.24.32.2
5.62.25.95.64.6
2.48.4
TB04045875
ME-MS41Tl•x,
0.005
0.1130.0990.0630.1530.109
0.170.1090.1840.1690.134
0.0940.166
ME-MS41Tl
ppm 0.02
0.17 ,0.140.040.230.07
0.270.080.260.240.19
0.050.28
ME-MS41U
ppm 0.05
0.740.710.3
0.630.36
1 0.750.350.630.620.58
0.361.04
i
l
\
\
ALS criemexEXCELLENCE IN ANALYTICAL CHEMISTRYALS Canada Ltd.212 BrooksbankAvenueNorth Vancouver BC V7J 2C1 CanadaPhone: 604 984 0221 Fax: 604984 0218
To: PLACER DOME NORTH AMERICA CAMPBELL MINE PO BOX 10 BALMERTOWN ON POV 1CO
Project: McKenzie Island
Page: 2 - DTotal # Pages: 2 (A - F)
Finalized Date: 4-AUG-2004Account: QDF
Method Analyte
Units imple Description LOR
iSO 51 52 S3S4
65 66 I57 .58;5960'61 ;
ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 V W Y Zn Zr
ppm ppm ppm ppm ppm 1 0.05 0.05 2 0.5
41 0.1 4.88 57 2.5 37 0.11 4.78 61 1.5 21 0.18 2.06 26 0.5 48 0.13 4.55 57 3.9 30 0.12 2.98 41 1.5
65 0.14 4.25 68 6.3 30 0.16 3.5 63 0.9 54 0.13 5.19 93 4.9 50 0.13 4.95 83 4.8 48 0.1 4.08 57 3.6
35 0.2 2.77 58 2.4 59 0.07 6.13 65 9.3
AU-ICP21 ME-ICP61 ME-ICP61 AU Ag Al
ppm ppm "X, 0.001 0.5 0.01
0.003 '0.5 7.19 0.001 '0.5 7.17 0.012 *0.5 6.22 0.007 '0.5 7.45 0.003 "0.5 6.34
0.001 '0.5 7.82 0.001 '0.5 7.16 0.001 '0.5 7.46 '0.001 '0.5 7.37 0.001 "0.5 7.01
'0.001 '0.5 6.62 '0.001 '0.5 7.90
CERTIFICATE
ME-ICP61 ME-ICP6 A* Ba
ppm ppm5 10
19 690 22 680 34 590 '5 700 15 610
11 640 15 770 '5 740 13 760 '5 630
12 590 8 710
OF ANALYSIS TB04045875i
1 ME-ICP81 ME-ICP61 ME-ICP61 ME-ICP61 ME-ICP61 B* Bl Ca Cd Co
ppm ppm "X. ppm ppm 0.5 2 0.01 0.5 1
.4 *2 1.19 '0.5 11
.3 '2 1.17 '0.5 15
.1 '2 1.57 '0.5 5
.3 '2 1.32 '0.5 12
.0 *2 1.59 *0.5 8
1.3 ^ .14 ^.5 13 1.1 ^ .67 '0.5 ' 10 1.4 <2 .17 ^.5 14 1.2 '2 .19 '0.5 l 13 1.3 '2 .18 '0.5 12
1.1 '2 1.53 '0.5 i 9 1.5 '2 1.04 *0.5 11
i
l
A L S
ALS ctiemexEXCELLENCE IN ANALYTICAL CHEMISTRYALS Canada Ltd.212 Brooksbank AvenueNorth Vancouver BC V7J 2C1 CanadaPhone: 604 984 0221 Fax: 604984 0218
To: PLACER DOME NORTH AMERICA CAMPBELL MINE PO BOX 10 BALMERTOWN ON POV 1CO
Project: McKenzie Island
Page: 2 - ETotal* Pages: 2 (A-F)
Finalized Date: 4-AIJG-2004Account: QDF
\
CERTIFICATE
MethodAnalyt*Units
imple Description LOR
SO;51S2;53S4
i55•56i57:5859
;60
ME-ICPS1 ME-ICP61 ME-ICP61Cr Cu F*
ppm ppm V, 1 1 0.01
90 16 2.7281 16 2.9796 6 1 .8695 12 3.0286 8 2.16
88 22 3.7056 8 2.3869 14 3.2570 14 3.0363 14 2.74
99 8 2.6372 18 3.38
ME-ICP61 ME-ICP61 ME-ICP61 ME-ICP61 ME-ICP61K Mg Mn Mo Natd V, ppm ppm IXI
0.01 0.01 S 1 0.01
2.09 0.88 729 *1 1.481.83 0.99 1035 1 1.351.57 0.51 248 1 2.012.18 1.12 616 1 1.631.62 0.72 345 "1 1.95
1.99 1.28 566 1 1.451.82 0.80 1580 1 1.982.19 1.22 624 •d 1.412.06 1.12 758 1 1.481.98 0.96 484 •d 1.51
1.51 0.63 308 1 1.942.25 1.08 394 ^ 1.43
ME-ICP61Nl
ppm 1
2530233436
3725363332
3136
OF ANALYSIS
ME-ICP61 ME-ICP61P
ppm 10
390760420440500
440540380430350
1440300
Pbppm
2
12816612
14710511
1012
ME-ICP61S•x,
0.01
0.010.010.010.010.01
0.010.010.010.010.01
0.010.01
TB04045875
ME-ICP61 ME-ICP61Sb Sr
ppm ppm S 1
^ 260*5 246^ 363^ 287^ 364
*5 257^ 365^ 250^ 261*5 270
*5 360^ 248
ME-ICP61Tl•54
0.01
0.430.410.240.400.30
0.400.330.420.420.36
0.280.41
l
l
l
(yVLSO
ALS ctiemexEXCELLENCE IN ANALYTICAL CHEMISTRYALS Canada Ltd.212 BrooksbankAvenueNorth Vancouver BC V7J 2C1 CanadaPhone: 604 984 0221 Fax: 604984 0218
To: PLACER DOME NORTH AMERICA CAMPBELL MINE PO BOX 10 BALMERTOWN ON POV 1CO
Project: McKenzie Island
Page: 2 - FTotal # Pages: 2 (A - F)
Finalized Date: 4-AUG-2004Account: QDF
| CERTIFICATE OF ANALYSIS TB04045875 _
MethodAnalyt*Unlti
imple Description LOR
;50i515253S4
.55,56.57-58.59
:60;61
, *'
ME-ICP61 ME-ICP61 ME-ICP61V W Zn
ppm ppm ppm 1 10 2
92 10 7989 t10 14048 *:10 4491 <10 7458 -c10 55108 -OO 8062 <10 8189 *10 10890 <10 10286 t10 68
63 -elO 78100 <10 75
l
l
l
Appendix 5
Petrographic Study Results
13
Appendix 6
Boat Rental Invoice
^S VJ\\
TELEPHONE
OTY DESCRIPTION - RENTAL RATE AMOUNT 1 w ii. ucoisnir i IUH DAy WEEK MONTH Hhiuuiii |
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40oeSERIAL # PO ̂ Q^CJ (~j i^
26 Up Uond/t, 40-CD
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SHORTAGE ; BREAKAGE i SALE ITEMS QTY. OUT QTY. USED UNIT PRICE AMOUNT 1
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1
1
Location where
Deliver to D
Al equtomer* k
LemeaBumas
PADDLES
LIFE VESTS 1 CUSHIONS
ANCHOR
BAILER 1 WHISTLE
9. v-XJ a-o "Tc.vj^k'/o -
Hc-p/sH'c? Op o i o o i\ /
^a/f* ^ W *l b . f J^^CVJ
equipment is to be used
AS ABOVE D OTHER
CONDITIONS UNDER WHICH EQUIPMENT IS RENTEDMd at leano* ret We exardae precaution In keeping our equipment In good concMon. ConrWons which Drew* of aqutpminl do not nieve lame of N. recpon**ty tor renW ohargee. el feiponsMty for equipment whle out of pMsasalon of lasaor, and promiia* to return mch equ^menl to toe lessor
h M good oxxSfcn at 1 wu at tie effective dale of the lease, natural wear from a latporafcle we eicopM. Lenee thai be table for any loss, theft, damage or de*truction of leased property.
Al equipment lost or damaged beyond repair *l be paU tor by tie lessee at the regular leplacemertpttaind a] deiMged equipment *hich ray be repaired ** be recalred by he lessor on return thereof and *ie ccd tor sued repairs thai be paid by the testae. Damage vaivs* sbove does not apply lo lots or to damage feuierl by a Mrd party Accrued (aiHal charges can not be iifterl against the purchase price or cost of repairs of such damaged or lost equipment AN cartage charges must be borne by lessee.
Scheduled rental rates begin urnen equfnenl Isaves our store and continue untt returr^ ftervto. A daanlng charge wl be made on terns returned undean.
RENTALS
OTHER
DELIVERY
GAS
SUBTOTAL
GST
PST
TOTAL
DEPOSIT-
30 ©0
I3L CO
la o^; 3 vi,
inrai*wrMinarin*rrurta!Wc*Jlr!aiteVweul(es^(lfrcM ^^^^Jj^^^J^^^f r*J rtL ~ \ O ̂
Signature /4//** * //lvl*"
CENTAL 13 CHARGED FOR TIME OUT- NOT TIME USED */-*/REFUND
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THANK YOU
Petrographic Report on Six Samples from McKenzie Island, Red Lake Greenstone Belt
Peter H. Thompson, Ph.D., P.Geol. (for Placer Dome Group, Red Lake Mine)
Peter H. Thompson Geological Consulting Ltd. 75 Fairmont Avenue Ottawa ON Canada K1Y 1X4 Tel/Fax: 1-613-722-8219 e-mail: pthompson^synapse net
52N04SW2078 2.28228 DOME 020
August 4, 2004
INTRODUCTION
This report presents the petrography of six samples from McKenzie Island in the Red Lake Greenstone Belt and interprets the results with respect to lithology, alteration, metamorphic conditions, and deformation. Digital versions of the report, sample scans, and photomicrographs are included on the compact disc in the back pocket. To maximize objectivity, study was done without access to detailed locations or previous company reports.
GEOLOGICAL SETTING
After Horwood (1940), McKenzie Island is underlain mainly by metasedimentary rocks intruded by the Dome and McKenzie granitic plutons. Mafic metavolcanic rocks are limited to the northernmost tip of the island and several lenses within the Dome pluton at the south end. Andrews et al. (1986) remapped the metasedimentary rocks as felsic metavolcanic rocks that formed part of a "Calc-alkaline Sequence". More recently. Parker (2000) and Sanborn-Barrie et al. (2001) subdivided the latter lithologic package into felsic metavolcanic rocks of the McNeely sequence (Confederation assemblage, -2.75-2.73 Ga) and metamorphosed volcanoclastic/clastic rocks and iron formation of the Bruce Channel assemblage (-2.89 Ga). McKenzie Island falls within Parker s (2000) distal carbonate alteration zone. On structural maps of the Red Lake Belt (Andrews et al., 1986; Sanborn-Barrie et al., 2001), McKenzie Island appears to be a zone of relatively low strain bounded by high strain zones lo the northwest and northeast. Southwest- northeast D2 structural trends southwest of the island and east-west to northwest-southeast trends east of the island (Sanborn-Barrie et al., 2001) are not continuous across the island. Except for the northeast corner that is located in the upper greenstone zone of regional metamorphism (Thompson, 2003), most of the island is presumed to be in the lower greenstone zone. The thin sections used in the regional study, however, were limited to the northeast corner. In the context provided by the belt-scale metamorphic map, the available data are consistent with peak metamorphic temperatures (375-425 0 C) and pressures (~ 3 kbars) in the middle greenschist facies. The metamorphic study concluded that the McKenzie and Dome plutons intruded early in the compressive stage of the orogenic process before regional metamorphic conditions reached a maximum, and are, therefore, themselves metamorphosed. More petrographic data from McKenzie Island will provide critical constraints on the metamorphic hot spot that appears to be associated with the past-producing Cochenour-Willins gold mine (Thompson, 2003).
PETROGRAPHY
Of the six samples (Figure 1) examined here, four are from one locality (rlmi-A,B,C,D) and two are assumed to be from another (rlmi-31201, rlmi-31206). All six samples are felsic metavolcaniclastic rocks (see Table l for mineral assemblages). Photomicrographs from different parts of each thin section are presented with both plane polarized light and crossed nicols. Image numbers in the figures refer to the photomicrographs included on the CD in the back pocket. For maximum resolution of photomicrographs, view individual images on the CD in a full screen format.
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project
Figure 1: Six samples examined in this report
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project
Sample rlmi-A (felsic litho/crystal metatuff)
Pale grey to beige weathering, this sample appears to be relatively homogeneous and massive in hand specimen. In thin section, there is a weak to moderate preferred orientation defined by the long dimensions of mineral and lithic clasts and by aggregates of white mica (Figures 2, 3). The chlorite-carbonate filling in between a pulled apart quartz grain (Figure 3ab, centre-right) is further evidence of syn-metamorphic strain. Rounded to subangular grains of plagioclase (0.5-1.5 mm) are variably altered to very fine-grained white mica ^0.005-0.02 mm) along grain boundaries and internal fractures. In some cases, only a small part of the plagioclase grain has survived (e.g., left and below pulled-apart quartz grain, Figure 3ab). Quartz occurs as well rounded to angular grains (0.1-2.0 mm). Many have the scalloped edges and indentations caused by partial resorption during the magmatic history of the rock (Figure 2de). While some quartz grains appear to be unstrained, others are divided into deformation domains by thin polygonized zones (Figure 2c, left centre, Figure 2d, lower left). Thin angular grains look like fragments that could have formed during explosive volcanic activity (Figure 3ef, lower left). Well-rounded mafic lithic clasts (0.5-1.0 mm) rich in chlorite and opaque minerals are also present (Figure 3cd). Although many of the very fine-grained aggregates of white mica are derived from igneous plagioclase, other irregular to wispy-shaped examples may be recrystallized volcanic glass (Figure 2de, upper left; Figure 3ef). Distinguishing the very fine grained white mica-quartz-feldspar-opaque mineral matrix from clasts is not straightforward. Carbonate is rare (the sample does not fizz in reaction to dilute HC1). Small opaque mineral grains (mostly "^0.02 mm) and chlorite are concentrated in mafic lithic clasts, but do occur in the matrix. The wide range in grain size from 0.005 to 2 mm, metamorphic mineral assemblages, relict igneous grains of quartz and plagioclase, variable clast type, and poorly-sorted aspect are the basis for calling this sample a felsic lithic/crystal metatuff.
Sample rlmi-B (felsic lithic/crystal metatuff)
This massive to weakly foliated rock has a rough pale grey to white weathered surface. Localized recessive zones suggest the presence of carbonate. Millimetre-scale quartz grains glisten on the fresh surface. Deformation is more heterogeneous than in the previous sample with most of the strain concentrated in sub-millimetre chlorite-rich seams (Figure 4de) or millimetre-scale white mica-rich zones (Figure 5cd). Carbonate veins with narrow chlorite-rich rims (Figures 4de, Sab) appear to predate the narrow chlorite deformation zones. White mica alteration of rounded to blocky plagioclase grains (0.25 to l mm) is more pervasive (Figure 4ab, upper right) than in sample rlmi-A. Quartz (0.25 to l .75 mm) occurs as angular to well rounded grains that show variable degrees of strain (compare Figures 4, 5). Prominent relatively homogeneous patches of very fine-grained material (pink and grey under crossed nicols) may be fine-grained felsic lithic clasts. Rounded to irregularly-shaped aggregates rich in opaque minerals and chlorite (Figure Sab) are interpreted to be mafic lithic clasts. Chlorite also replaces plagioclase grains and occurs in seams that cut across the sample. Aggregates of very fine- grained white mica that can be interpreted as metamorphosed volcanic glass are rare. Tiny opaque grains ^0.02 mm) occur in chlorite aggregates and in the matrix. Carbonate is present in veins (fizzes in dilute HC1) and in much smaller pull-apart features. Once again, wide ranging grain size, metamorphic minerals, relict igneous grains of quartz and plagioclase, variable clast type, and poorly-sorted aspect are the basis for calling this sample a felsic lithic/crystal metatuff.
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project
slab'thin section rlmi-A, slab 4.0 em long~
c) Image rlmi-Ab, crossed nicolse rlmi-Aa, 2.7 mm wide. pbm.
d) Image ilnii-Ac, 2.7 mm wide, plane c) Image rlmi-Ad, crossed nicols
Figure 2: Sample rln\i-A, felsic litho/crystal metatuff; bc) twinned plagioclase grain with onset of replacement by white mica along fractures and polygonized quartz grain, de) typical partially resorbed quartz grain in foliated white mica-rich matrix, note also deformation features in nearby quartz grain.
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project
c) Image rlmi-Ag, 2.7 mm d)Jmage rlmi-Ah, crossed nicols
e) Image rlmi-Ai, 2.7 mm wide, plane light f) Image rlmi-Aj, crosi.-u 1:1
Figure 3: Sample rlmi-A, felsic litho/crystal metatuff; ab) angular plagioclase grain partly replaced by white mica close to chlorite-carbonate pull-apart feature between broken quartz grain, cd) characteristic shape and texture of mafic lithic clasts, ef) very fine-grained white mica aggregates interpreted as metamorphosed volcanic glass shards.
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project 6
a) slab/thin section rlmi-B, slab 3.8 cmjon1 *"~ t'.
. KWf -v s.b) Image rlmi-Ba, 2.7 mm ^ kiu
d) Image rlmi-Bc, 2.7 mm wide, p.-;u light
X .
c) Image rlmi-Bd, u
Figure 4: Sample rtmi-B, felsic litho/crystal metatuff; bc) typical heterogeneous metaclastic texture, plagioclase grains (e.g., upper left corner) almost completely replaced by white mica, de) chlorite-rich seam cuts across carbonate-chlorite vein, note unstained quartz grain.
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project
c) Image rlmi-Bg, 2.7 mm u uk\ pLmc iiuhl d) Image rlmi-Bh, crossed nicols
Figure 5: Sample rlmi-B, felsic litho/crystal metatuff; ab) carbonate-chlorite veins oblique to weak foliation; cd) deformed quartz grain and plagioclase grains partly replaced by white mica are aligned within a more intensely foliated zone, areas of very fine-grained material that have a pink and grey speckled appearance under crossed nicols (upper right quadrant) are interpreted to be felsic lithic c lasts/fragments.
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project
Sample rlmi-C (felsic quartzofeldspathic phyllite)
Pale beige to white weathering and friable, this felsic rock (Figure 6) reveals a well- developed preferred orientation of very fine-grained white mica (*:0.005 to 0.01 mm) in thin section. Sub-millimetre quartz-carbonate veins, oblique to the mica fabric are folded and weakly boudinaged (Figure 7ab). Quartz and feldspar (O.01 mm) are subordinate to white mica outside the veins. The former occurs also as scattered grains that are coarser than white mica (Figure 7a, upper centre). Bluish-green to pale green tourmaline (0.02-0.04 mm) is a significant minor phase in the rock. Scattered throughout (Figure 7ef), locally it appears to have grown across the mica fabric (Figure 7cd). In some cases, tiny prismatic grains overgrow a rounded nucleus. Trace amounts of chlorite are present in the matrix and in the polygonized quartz- carbonate veins. Carbonate is located in pull-aparts formed by boudinage of the veins. Apatite is a prominent trace mineral. Much more homogeneous with respect to grain size and mineralogy, lacking the meta-volcanoclastic texture of samples rlrni-A and rlmi-B, and more penetratively deformed, this rock is interpreted to be a very-fine-grained felsic metatuff or a metamorphosed altered rhyolite flow.
Figure 6: Sample rlmi-C, slab (2.7cm high) and thin section
Sample r l m i-1) (bedded felsic metatuff/metavolcaniclastite)
Pale greenish-grey to white with lenticular pits on the weathered surface, this rock is clearly layered and foliated (Figures l, 8a). Several millimetres thick, layering is defined by average grain size with zones rich in relatively coarse-grained plagioclase, quartz and irregularly shaped aggregates of very fine-grained white mica (0.5-1.5 mm) (Figure 8) intercalated with
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project
c) Image rlmi-Cc, 0.35 nun wide, plane light d) Image rlmi-Cd, crossed nicols
e) Image rlmi-Ce, 1.35mm wide, plane light O Image rlmi-Cf, crossed nicols
Figure 7: Sample rlmi-C, felsic quartzofeldspathic phyllite; note high white mica content and very fine grain size; ab) deformed quartz carbonate vein, carbonate appears to filling pull-apart zones related to weak boudinage of vein where it is parallel to the foliation, cd) tourmaline cluster oblique to foliation, ef) lower power view showing numerous tourmaline grains, the cluster in c) is in upper right corner.
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project 10
a) slab thin section rlmi-D. slab 4.0 cm long
c rlmi-Db, crossed nicuLs
d) Image rlmi-Dc, 2.7 mm 'A idc. plane light e) Image rlmi-Dd, crossed nicols
Figure 8: Sample rlmi-D, bedded felsic metatuff; bc) grain size variation that defines bedding , dark grains are epidote and opaque minerals; de) irregularly shaped aggregates of white mica interpreted as metamorphosed glass shards, note plagioclase phenocrysts inside one aggregate, dark minerals are epidote.
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project ii
•^
it*. *i"- •i
l .. .a) Image rlmi-De, 2.7 nun vude. plane light
J *
b) Image rlmi-Df, crossed nicols
v#3c) linage rlmi-I)y, 2.7 mm wide. d) Image rlmi-Dh, crossed nicols
e) Image rlmi-Dj, 2.7 mm wide, plane Uuni O Image rlmi-Di, crossed nicols
Figure 9: Sample rlmi-D, bedded felsic metatuff; weak preferred orientation; ab) typical texture of fine-grained layers, note seams of chlorite and epidote; cd) chlorite-epidote aggregates after mafic volcanic glass?, ef) epidote aggregate possibly after a chlorite-carbonate pull apart between two parts of a partly resorbed quartz grain.
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project 12
much finer-grained zones (Figure 8bc, lower left; Figure 9ab) characterized by tiny angular grains of quartz (0.05-0.7 mm). In both cases, a preferred orientation of mineral grains and clasts is present. Euhedral plagioclase (Figure 8bc) and partly resorbed quartz (Figure 9ef) similar are evidence of the ultimately igneous source of this rock. The white mica aggregates interpreted to be derived from shards of volcanic glass (Figures 8de, 9cd) support a volcaniclastic origin as well. Clusters (Figure 8b-d) and aggregates/seams (Figure 9a-f) of euhedral epidote (0.1 mm) with chlorite are a distinctive feature. They may represent concentrations of carbonate and chlorite that reacted to form epidote with increasing metamorphic grade consuming all the carbonate. Opaque minerals occur as individual grains and as clusters associated with what may be "fuzzy" titanite. An unknown mineral may be another epidote group phase or a variety of titanite. Trace amounts apatite and of prismatic tourmaline (0.15 mm) are present. Wide range of grain size, presence of igneous plagioclase and quartz crystals, possible metamorphosed glass shards, and poor degree of sorting are consistent with this sample being a bedded felsic metatuff or felsic meta-epiclastite.
Sample rlmi-31201 (felsic metatuff)
The homogeneous and massive-looking chip of rock (Figure 10) that was thin-sectioned has a pale-grey to beige weathered surface. Distinguished from the other five samples by a much lower content of very fine-grained matrix (Figure 11 a-f), the resulting closely-packed appearance of mineral and lithic clasts is the result. Clasts and matrix outline a weak preferred orientation. Rounded to blocky plagioclase, replaced to varying degrees by very fine-grained white mica, predominates over subrounded grains of quartz (Figure 11). Chlorite-opaque mineral aggregates
\
Figure 10: Sample AA31201, slab (4.0 cm long) and thin section
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project 13
b) Iniaue rlmi-31201b, crossed nicols
c) Image rlmi-31201d, 2.7mm wide, plane light d) Image rlmi-31201e, crossed nicols^,^B i i i,- - ,-*. . t-^^M^M^i^^M^^^^^^HMxi^MMMMH
e) Image rlmi-31201f, 2.7mm .viuc. f) Image rlmi-31201g, crossed nicols
Figure 11: Sample rlmi-31201, felsic rnetatuff, epidote not present; ab) typical metaclastic texture dominated by plagioclase and lithic grains, less matrix than in other metatuffs; cd) carbonate vein with chlorite rim, numerous small mafic clasts ; ef) somewhat finer grained zone also dominate by plagioclase and lithic clasts.
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project 14
Are smaller here (Figure l led). The chlorite rims on carbonate veins (Figure l led) are more sharply defined in this rock than they are in sample rlmi-B. The veins react strongly to dilute hydrochloric acid. Carbonate is also present in the matrix and as a replacement for plagioclase. Rounded to irregular grains of opaque minerals are typically less than 0.04 mm across. There are trace amounts of apatite. Where present, the matrix is a very fine-grained aggregate of white mica, quartz, and feldspar. With its somewhat higher degree of sorting and higher clast to matrix ratio, this rock is another variation on the theme of metamorphosed felsic volcaniclastic rocks that is represented by the other five samples.
Sample rlmi-31206 (felsic mctatuff)
Pale grey to white weathering, this rock exhibits a weak foliation and some variation in grain size that may represent bedding or the intercalation of lenses of relatively coarse and fine material (Figure 12). In thin section, the long dimension of white-mica aggregates (Figure 13a- d) defines a weak preferred orientation that parallels a crude alignment of other mineral grains and aggregates. Overall, the replacement of angular grains of plagioclase (0.5-1.5 mm) by white mica(O.01 mm) is quite advanced (Figure 13a-t)- Quartz grains (Figure 13ab) tend to occur as either angular fragments (~0. l mm) or rounded, p art l y-resorbed grains (0.7-1.5 mm). Individual grains or aggregates of euhedral epidote (0.07-0.1 mm) are quite common but chlorite and carbonate are still present in the matrix with and without epidote. Only half of the distinctive aggregate of very fine-grained white mica (Figure 13cd) is included in Figure 13cd. As is the case with other samples in the study suite, matrix ^0.02 mm) is composed of white mica, quartz and probably feldspar (too fine-grained to be certain). The mixture of lithic and crystal clasts, the poorly sorted aspect, relict igneous and quartz grains, metamorphic assemblages, and texture are the basis for designating this rock a metamorphosed felsic volcaniclastic.
Figure 12: Sample rlmi-31206, slab (3.8 cm long) and thin section
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project 15
a) Image rlmi-31206a. 2. 7 mm wide 1206b, crossed nicols
c) Image rlmi-3120(K. ,. " Kim \\ulc. plane li:: - - -- - - Image rlmi-31206d, crossed in5*F
'•M
e) Image rlmi-31206e, 2.7 mm wide, plane light f) Image rlmi-31206f, crossed nicols
Figure 13: Sample rlmi-31206, felsic metatuff; ab) typical poorly-sorted metaclastic texture, note polygonized quartz grain; cd) one half of a 5 mm long aggregate of very fine-grained white mica interpreted as metamorphosed volcanic glass; ef) epidote-chlorite aggregates and plagioclase grains partially replaced by white mica in a white mica-rich matrix with a moderate preferred orientation.
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project 16
INTERPRETATION
Lithology
The mineralogical and textural features of the six samples are consistent with an origin as felsic crystal/lithic tuffs. The overall grain size range less than 2 mm may indicate a significant distance from the felsic volcanic centre. If the samples exhibiting a degree of compositional layering (rlmi-D, rlmi-31206) have been subjected to some degree of reworking by water, the term epiclastite would be more accurate. The absence of lithic clasts, the very fine grain size, higher white mica content, tourmaline, and generally more homogeneous aspect distinguish sample rlmi-C. It is important to determine if this sample is characteristic of a lithologic unit that is concordant with stratigraphy or of a discordant zone of intense alteration and deformation. The presence of tourmaline can be explained by exhalative processes accompanying deposition of very fine-grained volcaniclastic rocks or by synvolcanic hydrothermal alteration after deposition.
Deformation
The variable, but mainly weakly developed preferred orientation of minerals and mineral aggregates, the fractured plagioclase, and the polygonized quartz grains are evidence that these samples have been involved in the ductile deformation history of the Red Lake Greenstone Belt. Assuming that the preferred orientation observed in thin section is equivalent to D2 structures elsewhere in the belt, the absence of structural trends across the island suggests either that the structures observed in thin section are not measurable at outcrop scale or the structural mapping is incomplete. The low grade of regional metamorphism that accompanied the formation of deformation fabrics and the resulting fine-grain size of metamorphic minerals that define the structures may also part of the problem.
As discussed above, whether or not the most intensely deformed sample (rlmi-C) is part of a particular lithologic unit or a deformation/alteration zone is an important question to be answered by further work.
Metamorphism
The pervasive metamorphic textures and the coexistence of chlorite and white mica (Table 1) in all six samples indicate that the grade of regional metamorphism is in the lower greenstone zone. The implied temperatures of 350-4000 C and pressures less than 4 kb are typical of the lower greenschist facies. Although the location of the samples on McKenzie Island is not known to the author of this report, the new data support the extrapolation of the lower greenstone zone across the southern two thirds of the island (Thompson, 2003). Moreover, it appears that these rocks were not affected by the upper greenstone to amphibolite zone metamorphic "hot spot" that is associated with the Cochenour-Willins past-producing gold mine. On the other hand, the location of the epidote-bearing samples (rlmi-D, rlmi-31206) relative to the other samples and to this relatively high metamorphic grade zone is important. A metamorphic reaction between carbonate, white mica, and chlorite to produce epidote could occur within the lower greenschist facies as a result of higher temperatures and/or a change in
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project l J
metamorphic fluid composition. That is, if the presence of epidote in these samples and its absence from the other four can be attributed to increase in temperature and/or change of fluid composition, the change may be significant with respect to gold mineralization.
Alteration
Is the remarkably pervasive, but partial to complete, replacement of plagioclase by white mica a product of hydrothermal alteration associated with volcanism or is the alteration a product of processes related to regional metamorphism? Clearly, the white mica present in the rocks now is a metamorphic mineral that grew or, at least, recrystallized during metamorphism and deformation of the rocks. During metamorphism, detrital or igneous plagioclase and potassium feldspar commonly change composition and texture without being replaced by white mica. The replacement of plagioclase by white mica, therefore, likely requires interaction with a hydrous fluid phase sufficiently rich in K+ and or Na4- ions that feldspars become unstable with respect to K-mica ("sericitization") or Na-mica ("paragonitization"), respectively. If the process occurred during or soon after volcanism, on or near the sea floor, potassic or sodic clay minerals could form. Subsequent metamorphism and deformation would recrystallize and re-orient the synvolcanic hydrothermal micas or form new ones with a preferred orientation from the clay minerals. Alternatively, the feldspars in tuffaceous rocks remain unaltered until potassic hydrothermal fluids derived from metamorphism of rocks deeper in the crust transform the igneous feldspars into white mica. Both scenarios have potential to be prospective for gold mineralization. Gold ore associated with synvolcanic, pre-metamorphic hydrothermal alteration, however, should show evidence of subsequent metamorphism and deformation. Syn- metamorphic ore should cut across one or more generations of structures and perhaps be associated with textural evidence that it is synchronous or younger than the predominant metamorphic assemblages.
Carbonate-chlorite veins present in samples rlmi-B and rlmi-31201 are evidence of another possible alteration event. This may be the style of Parker's (2000) distal carbonate alteration zone. Less pervasive than white mica alteration of plagioclase, these features appear more likely to be part of the main metamorphic and ductile deformation events rather then definitively older or younger than these events. On the other hand, epidote-rich seams in sample rlmi-D can be interpreted as metamorphosed carbonate-chlorite veinlets.
A key aspect of both these potential hydrothermal alteration events yet to be examined is whether or not the intensity of the transformation of plagioclase or of the density of carbonate- chlorite veinlets increases toward know gold mineralization. Such a relationship could provide a vector that, integrated with other data sets, enhances exploration of known gold deposits and helps to define new targets.
CONCLUSIONS
* All six samples represent variations within a single package of metamorphosed felsic volcanic rocks that is dominated by crystal/lithic metatuffs.
* Synmetamorphic ductile deformation has modified to varying degrees the sample suite.
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project l g
* Regional metamorphic grade of the felsic metavolcanic sequence attained maxium temperatures (350-4000 C) and pressures (3-4 kbars) in the lower greenschist facies.
* The suite of samples falls outside the thermal and/or fluid composition effects related to formation of the metamorphic "hot spot" that is associated with the Cochenour gold mine.
* If the intensity of either or both the more pervasive white mica alteration of plagioclase and the more restricted carbonate-chlorite vein type alteration can be linked to gold mineralization these features could provide a useful tool for gold exploration.
RECOMMENDATIONS
* Determine if the white mica-rich, intensely foliated sample (rlmi-C) is part of a concordant stratigraphic unit or of a discordant deformation/alteration zone.
* Confirm with more extensive sampling on McKenzie Island whether or not the high metamorphic grade anomaly associated with the Cochenour-Willans past producing gold mine extends westward across Bruce Channel and whether or not it can be linked to gold mineralization on the island.
* Explore the degree to which white mica alteration, carbonate-chlorite alteration and the origin of sample rlmi-C can be used as vectors for gold exploration.
REFERENCES
Andrews, A. J., Hugon, H., Durocher, M, Corfu, F., and Lavigne, M. J., 1986, The anatomy of a gold-bearing greenstone belt, Red Lake, northwestern Ontario, Canada; In, Proceedings of Gold ' 86, an International Symposium on the Geology of Gold Deposits, Konsult International Inc., Toronto, p. 3-22.
Horwood, H.C., 1940, Geology and mineral deposits of the Red Lake area, Ontario; Department of Mines, v.49, pt. 2 (published 1945), 231 p., accompanied by 8 maps.
Parker, I.R., 2000, Gold mineralization and wall rock alteration in the Red Lake greenstone belt: aregional perspective; m Summary of Field Work and other activities, Ontario Geological Survey,Open File Report, 6032, p. 22-1 to 22-27.
Sanborn-Barrie, M., Skulski, T., and Parker, J.R., 2001, Three hundred million years of tectonic historyrecorded by the Red Lake greenstone belt, Ontario; Geological Survey of Canada, CurrentResearch 2001-C 19, 14p.
Thompson, P.H., 2003. Toward a new metamorphic framework for gold exploration in the Red Lake Greenstone Belt; Ontario Geological Survey, Open File Report 6122, 5 Ip., 1:50.000 scale metamorphic map.
Peter H. Thompson Geological Consulting Ltd. McKenzie Island Project 19
lata table (Table 1)
pig - plagioclasepig c-calcic(An^O) s-sodic(An<3)po - pyrrhotitepre - prehniteps -pseudomorphpy - pyritepyl - pyrophylliteqtz - quartzru - rutileser - serpentinestp - stilpnomelanesu - sulphidetit - titaniteto - tourmalineun - unknownwm - white mica, m-muscovite,
p-paragonite, t-talc zo - zoisite zi/mz - zircon and/or monazite
Other Symbols
x - >10 modal percent o - 1-10 modal percent t - < l modal percent
- no symbol ^ not present
? - identity or modal "/o uncertainx) (x) - mineral is partly,completelypseudomorphed2 - secondary/alteration mineralr - relict igneous grains
Rock Name Abbreviations
ampb - amphiboliteclsl - calcsilicate rockscore - core of metamorphosedpillowfei - felsicFefm - iron formationfol - foliatedgrnst - greenstonegrnst/ampb - transition grnst toampbgrnst/mgbr - probably was gabbrogrid - granitoidHSZ - high strain zoneimvo - intermediate metavolcanicrocksinterpil - interpillow materialmdior - metadioritemlamp - metalamprophyremepcl - metaepiclastitemfvo - felsic metavolcanic rocksmgabbro - metagabbro, 8 - no 8dykemgwke - metagreywackemgrtd - metagranitoidmmvo- mafic metavolcanic rocksmtonl - metatonalitemtuff - metatuffmumaf - metaultramafic rocksmvlcl - metavolcanoclastitephyll - phyllitepste - psammite
qfb - quartz feldspar porphyry segr - segregation selv - pillow selvage vein l,.. - numbers indicate
relative age
Metamorphic Grade
Igs - lower greenstone zone ugs upper greenstone zone tz - transition zone az - amphibolite zone
ONTMIO MINISTRY OF NORTHERN DEVELOPMENT AND MINES
Transaction No: W0420.01241
Recording Date: 2004-AUG-05
Approval Date: 2004-DEC-06
Work Report Summary
Status: APPROVED
Work Done from: 2004-JUL-15
to: 2004-JUL-20
Client(s):300210
Survey Type(s):
PLACER DOME (CLA) LIMITED/PLACER DOME (CLA) LIMITEE
ASSAY GEOL MICRO
Work Report Details:Perform Applied Assign Reserve
Claim* Perform Approve Applied Approve Assign Approve Reserve Approve Due Date
KRL 1184170 36,994 35,698 33,929 33,929 SO O 33,065 S1.769 2009-AUG-08
36,994 35,698 33,929 33,929 SO 30 S3.065 31,769
External Credits:
Reserve:
30
31,769 Reserve of Work Report*: W0420.01241
51,769 Total Remaining
Status of claim is based on information currently on record.
52N04SW2078 2.28228 DOME 900
2004-D6C-22 13:37 ARMSTRONG! Page 1 of 1
Ministry ofNorthern Developmentand Mines
Date:2004-DEC-16
Ministere du Developpement du Nord etdes Mines Ontario
GEOSCIENCE ASSESSMENT OFFICE 933 RAMSEY LAKE ROAD, 6th FLOOR SUDBURY, ONTARIO P3E 6B5
PLACER DOME (CLA) LIMITED/PLACER DOME(CLA) LIMITEE130 ADELAIDE STREET WESTP.O. BOX 43, SUITE 3201TORONTO, ONTARIOM5H 3P5 CANADA
Dear Sir or Madam
Tel: (888) 415-9845 Fax:(877)670-1555
Submission Number: 2.28228 Transaction Number(s): W0420.01241
Subject: Approval of Assessment Work
We have approved your Assessment Work Submission with the above noted Transaction Number(s). The attached Work Report Summary indicates the results of the approval.
At the discretion of the Ministry, the assessment work performed on the mining lands noted in this work report may be subject to inspection and/or investigation at any time.
The revisions outlined in the Notice dated October 22, 2004 have been corrected. The requested expense verification for this submission however has not been received within the time period specified. Accordingly, the geologist rate has been reduced to the average Industry Standard for the Red Lake district for the 8 mandays reported.
The assessment credit is being reduced by S1 ,296. The TOTAL VALUE of assessment credit that will be allowed, based on the information provided in this submission, is S5,698.
If you have any question regarding this correspondence, please contact [email protected] or by phone at (705) 670-5856.
Yours Sincerely,
BRUCE GATES by email at
Ron C. GashinskiSenior Manager, Mining Lands Section
Cc: Resident Geologist
Placer Dome (Cla) Limited/Placer Dome (Cla)Limitee(Claim Holder)Judy Kacan (Agent)
Assessment File Library
Placer Dome (Cla) Limited/Placer Dome (Cla)Limitee(Assessment Office)
Visit our website at http://www.gov.on.ca/MNDM/LANDS/mlsmnpge.htm Page: 1 Correspondence 10:20146
ONTARIOCANADA
MINISTRY OF NORTHERN DffiLOPUEm AND MINES
PROVINCIAL MMINO RECORDERS OFFICE
Mining Land Tenure Map
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Date l Time of Issue: Thu Dec 16 10:57:53 EST 2004
TOWNSHIP l AREA PLAN DOME G-3748
ADMINISTRATIVE DISTRICTS l DIVISIONS
Mining Division Red LakeLand Titles/Registry Division KENORAMinistry of Natural Resources District RED LAKE
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