Ontario Geological Survey
Permanent Link to this Record:
MDI52E09NW00037
| Record Name(s) | Homestake Mine - 1990, Middle Island - 1990, Ontario Homestake - 1990 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1990-Dec-08 |
| Date Last Modified | 2022-Jul-27 |
| Created By | |
| Revised By |
Primary Commodities: Gold, Silver
Township or Area: Bigstone Bay Area
Latitude: 49° 40' 2.02" Longitude: -94° 26' 31.78"
UTM Zone: 15 Easting: 395934.7 Northing: 5502631.07 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52E09NW
Point Location Description: Precise
Location Method: Conversion from MDI
Access Description: The shaft is 0.9 km SW of Heaps Point on Middle Island. It is 1 km SSE of Kenora from where it is accessible by boat.
Late 1890s: Past production: $5,000,000 annual production (Rat Portage Miner, 1899). The only source of this information is the Rat Portage Miner. No other documentation regarding production has been found. Davies and Smith (1988) noted the presence of a 12 m deep shaft.
Province: Superior
Subprovince: Wabigoon
Belt: Lake of the Woods
Geological Age: Archean
Aug 08, 2014 (Therese Pettigrew) - Approx. 2 km of intermediate to felsic pyroclastics overlie the basal tholeiitic basalts and are exposed in the NE-trending Sultana Syncline. The lower part of this succession is exposed on Middle Island. Foliation is mostly well developed, striking between 020° and 060°, with very steep dips to the SE.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Host |
|---|
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 3 | Galena | Economic | Ore | ||||
| 2 | Pyrite | Economic | Gangue |
Aug 08, 2014 (Therese Pettigrew) - A non-foliated, strongly carbonatized, 1 m wide zone, striking 005° and dipping 85° E, lies at the edge of an outcrop of foliated, dacititc tuff-breccia and lapilli tuff. The carbonatized rock is pale green and contains irregular, quartz-filled fractures. Pyrite and galena are present in carbonate-rich irregular veins and, to a lesser extent, in the massive rock. A near-vertical shaft on the carbonatized zone has an estimated depth of 12 m. A sample with abundant carbonate and minor galena and pyrite, taken from a pile of mineralized blocks, contained 28 ppb Au and 6 ppm Ag (Davies and Smith, 1988).
| Rank | Classification |
|---|---|
| 1 | Vein |
Mono - The geological setting of gold occurrences in the Lake of the Woods area
Publication Number: OFR5695 Page: 218 Date: 1988
Author: Davies J.C., Smith P.M.
Publisher Name: Ontario Geological Survey
Location:
Publication - RAT PORTAGE MINER 1899-05-25
Publication Number: N/A Date: 1996
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Publication - RAT PORTAGE MINER 1900-08-31, P1
Publication Number: N/A Date: 1996
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Publication - RAT PORTAGE MINER 1901-04-09, P1
Publication Number: N/A Date: 1996
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Publication - RAT PORTAGE MINER 1901-06-12, P1
Publication Number: N/A Date: 1996
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Map - Precambrian Geology of the Lake of the Woods Area-North Sheet
Publication Number: P2675 Scale: 1:50,000 Date: 2009
Author: Ayer J.A.
Publisher Name: Ontario Geological Survey
Location:
Map - Bigstone Bay area, Lake of the Woods, District of Kenora, Ontario
Publication Number: ARM39F Scale: 1:63,360 Date: 1998
Author: Suffel G.G.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geological and topographical map of the northern part of the Lake of the Woods and adjacent country
Publication Number: ARM06A Scale: 1:126,720 Date: 1998
Author: Lawson A.C.
Publisher Name: Ontario Bureau of Mines
Location:
Map - Lake of the Woods sheet, districts of Kenora and Rainy River, geological compilation series
Publication Number: P0281 Scale: 1:126,720 Date: 1997
Author: Davies J.C., Pryslak A.P.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geological series, Precambrian geology, Bigstone Bay area, northern part, Kenora District
Publication Number: P2830 Scale: 1:15,840 Date: 1985
Author: Ayer J.A., Gil K.M., McCurdy M.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, Precambrian geology, Bigstone Bay area, southern part, Kenora District
Publication Number: P2831 Scale: 1:15,840 Date: 1985
Author: Ayer J.A., Gil K.M., McCurdy M.
Publisher Name: Ontario Geological Survey
Location:
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