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Ontario Geological Survey
Permanent Link to this Record:
MDI000000001144
| Record Name(s) | Canyon Occurrence, Black Sturgeon Lake - 1987 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2011-Mar-23 |
| Date Last Modified | 2022-Feb-17 |
| Created By | |
| Revised By |
Primary Commodities: Uranium
Township or Area: Mikinak Lake Area
Latitude: 49° 18' 40.5" Longitude: -88° 47' 23.74"
UTM Zone: 16 Easting: 369901 Northing: 5463598 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52H07SW
Point Location Description: Mouth of canyon and NE of a small pond.
Location Method: Field Visit with GPS
J.F. Scott reported this occurrence in OFR5634, but no exploration activity has been reported on this specific occurrence in the assessment files. Uranium exploration was conducted in the general area by Uranerz Exploration & Mining Ltd. in 1982 and Rampart Ventures Ltd. in 2005-6.
Province: Superior
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Breccia-unsubdivided | 1 | Quartz-Hematite | Host |
|---|
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Hematite | Economic | Gangue |
Mar 23, 2011 (J Scott) - Uranium associated with quartz-hematite breccia. 800 ppm U
Jan 22, 2018 (Therese Pettigrew) - Hermatitic alteration and occurrences have been reported in the Black Sturgeon area by Coleman (1909). The Black Sturgeon occurrences are associated with the Black Sturgeon Fault System and consist of massive to crystalline hematite present as specularite and as the red earthy variety. Hematite cements intensely weathered and brecciated Archean metavolcanic and granititc rocks, quartz, and chalcedony. Granitoid rocks exhibit intense sericitization of feldspars. Analysis from a site located at the mouth of a canyon northeast of Black Sturgeon Lake yielded 800 ppm U, 100 ppm Ni, 64 ppm Co, 0.01 opt Au, and 0.10 opt Ag (Scott 1987).
Mono - Uranium occurrences of the Thunder Bay-Nipigon-Marathon area
Publication Number: OFR5634 Scale: Date: 1987
Author: Scott J.F.
Publisher Name: Ontario Geological Survey
Location:
Part - Black Sturgeon iron region
Publication Number: ARV18-01.005 Scale: Date: 1998
Author: Coleman A.P.
Publisher Name: Ontario Bureau of Mines
Location:
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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office