Ontario Geological Survey
Permanent Link to this Record:
MDI52B15SW00009
| Record Name(s) | Sandy Lake - 1991, P.T. Sawdo - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Mar-25 |
| Date Last Modified | 2023-Jan-06 |
| Created By | |
| Revised By |
Primary Commodities: Copper
Secondary Commodities: Gold, Silver
Township or Area: Bedivere Lake Area
Latitude: 48° 47' 42.87" Longitude: -90° 56' 59.74"
UTM Zone: 15 Easting: 650557 Northing: 5406721 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52B15SW
Point Location Description: GPS
Location Method: Conversion from MDI
Access Description: Access to the property is via the Brule Road from Highway 11 to a location 900 m north of the Canadian National Railway tracks (UTM 657245E 5399927N) and thence westerly (and eventually northerly) along an older grown in bush road that leaves the Brule Lake road and accesses Union Lake. This road can best be travelled with either an all-terrain vehicle (ATV) during most of the year or by snow machine in the winter time. The distance to the Atikokan River is about 11.3 km. Proceed across the river and continue for about another 1.8 km. The southwest bay of Sandy Lake is approximately 130 m east of this location.
The area was geologically mapped by McInnes (1897) and published as a regional map depicting the geology of the Thunder Bay and Rainy River districts. Tanton (1938) recompiled the geology of the Thunder Bay–Rainy River District for the Geological Survey of Canada. 1957: Companies including Kinasco Exploration and Mining Limited, Montco Copper Corporation Limited and Nashua Exploration and Mining Limited, conducted geophysical surveys. geological mapping and diamond drilling in the Chief Peter Lake area. Irvine (1963), mapped the western section of Lac des Mille Lacs area in 1960, including the Sandy Lake area, for the Ontario Department of Mines. 1974: Asarco Exploration Company Limited did geological and geophysical surveys southeast of the area. 1979: Rio Tinto flew an airborne electromagnetic survey. In 1980, the Ontario Geological Survey contracted Questor Surveys Limited to conduct an airborne magnetometer and electromagnetic survey along the metavolcanic belt from Mine Centre to Lac des Mille Lacs, covering the Sandy Lake area. 1981: P. Sawdo staked claims TB613961 - 613964 and transfered all interest to B. R. Davidson. Geophysical surveys conducted in 1982 and1983 by Phantom Exploration consisting of VLF and Max Min II. Dyer (1999) undertook lake sediment and lake water regional high-density geochemical survey that outlined newer gold and PGE targets in the Atikokan area. More recently, Stone (2005) mapped the geology of the Bedivere Lake area that includes the area around Sandy Lake. 2009 – 2015: M. Frymire and J. Brown have prospected and collected samples from the Sandy Lake showing. 2016: Exploration focussed on the Sandy Occurrence as well as a new shear zone 150m east of the Sandy Occurrence.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.49649 | 20000006373 | 20000006373 |
| 2.52956 | 20000007420 | 20000007420 |
| 2.54535 | 20000007902 | 20000007902 |
| 2.55352 | 20000008341 | 20000008341 |
| 52B15SE0038 | 52B15SE0038 | 52B15SE0038 |
| 2.57179 | 20000014119 | 20000014119 |
Province: Superior
Subprovince: Wabigoon
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Felsic Schist | 1 | Sericite Schist | Host |
|---|---|---|---|---|
| Schist-Unsubdivided | 2 | Chlorite Schist | Adjacent |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Arsenopyrite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Pyrite | Economic | Ore | ||||
| 4 | Pyrrhotite | Economic | Ore |
Jun 30, 2015 (Dorothy Campbell) - Samples taken by Frymire and Brown (2012) returned 14,769 ppm Cu. Samples taken by Scott and Campbell (2008) returned 1136 ppm Cu. Schnieders and Dutka (1985) analysed 22 samples; highlights include: sample 81BPS-3: 0.02 oz/t Ag; sample 81BPS-6: 1.39% Cu; sample 81BPS-9: 0.02 oz/t Au, 3.83% Cu; sample 81BPS-14: 0.04 oz/t Au, 0.84 oz/t Ag, 0.42% Cu; sample 82BPS-11: 1.02 oz/t Ag.
Date: Sep 25, 2008
Geologist: J Scott
Notes: John Scott and Dorothy Campbell visited the property on Sept 23, 2008. The host rocks at the Sandy Lake occurrence are sheared metavolcanic rock of felsic and mafic compositions. The felsic metavolcanic units are represented by sericite schists, whereas the mafic volcanic units are now chlorite schists. An anastomosing quartz-carbonate vein system striking at 120° with a vertical dip is exposed in an outcrop of sheared mafic volcanic rock on the north shore of the southwest bay of Sandy Lake. Quartz veins are up to 3 m wide ranging down in size to quartz stringers. Chalcopyrite, pyrite, and some galena are present within the main quartz vein. Azurite and malachite are also present as fracture coatings within the quartz vein system. Samples taken by Scott and Campbell (2008) returned 1136 ppm Cu. Evidence of Winkie diamond drilling on the property exists with the presence of an old concrete drill platform as well as scattered drill core. There is no record of diamond drilling on the Sandy Lake copper-gold occurrence in the Thunder Bay Regional Geologist’s office assessment files.
Mono - Property visits and reports of the Atikokan economic geologist, 1979-1983, Atikokan geological survey
Publication Number: OFR5539 Page: 425-427 Date: 1985
Author: Schnieders B.R., Dutka R.J.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Western Lac des Mille Lacs area
Publication Number: R012 Date: 1997
Author: Irvine T.N.
Publisher Name: Ontario Dept. of Mines
Location:
Publication - Report on the Geology of the Area Covered by the Seine River and Lake Shebandowan Maps Sheets Comprising Portions of Rainy River and Thunder Bay Districts, Ontario
Publication Number: Ann Rep 10 H Date: 1897
Author: McInnes, W.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/293883
Publication - Atikokan (Marmion Lake - Bedivere Lake Area); In: 2008-2009 Recommendations for Exploration
Publication Number: 2008-9 Rec Ex Page: 19-20 Date: 2009
Author: Scott, J.
Publisher Name: Ontario Geological Survey Resident Geologist Program
Location: https://www.mndm.gov.on.ca/sites/default/files/article_files/recommendations_for_exploration_2008_2009.pdf
Mono - Report of Activities 2008, Resident Geologist Program, Thunder Bay South Regional Resident Geologist Report: Thunder Bay South District
Publication Number: OFR6234 Date: 2009
Author: Scott J.F., Campbell D.A., Hinz P., Komar C.L., Brunelle M.R.
Publisher Name: Ontario Geological Survey
Location:
Mono - Property visits and reports of the Atikokan economic geologist, 1979-1983, Atikokan geological survey
Publication Number: OFR5539 Date: 1985
Author: Schnieders B.R., Dutka R.J.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology, Bedivere Lake Area
Publication Number: P3523 Scale: 1:50,000 Date: 2005
Author: Stone D.
Publisher Name: Ontario Geological Survey
Location:
Map - Quetico Sheet, East Half, Thunder Bay and Rainy River Districts, Ontario
Publication Number: Map 432A Scale: 1:253,440 Date: 1938
Author: Tanton, T.L
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/107620
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