Ontario Geological Survey
Permanent Link to this Record:
MDI000000002501
Record Name(s) | Attwood Lake West - 2021 |
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Record Status | Occurrence |
Date Created | 2021-Mar-31 |
Date Last Modified | 2022-Jun-15 |
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Revised By |
Primary Commodities: Iron
Township or Area: Hurst Lake Area
Latitude: 51° 18' 19.61" Longitude: -88° 26' 31.18"
UTM Zone: 16 Easting: 399484 Northing: 5684780 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52P08SW
Point Location Description: Sample 14SF006 from MRD334
Location Method: Field Visit with GPS
No assessment reports were found on file.
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Miminiska-Fort Hope
Geological Age: Archean
Rock Type | Rank | Composition | Texture | Relationship | Ironstone-unsubdivided | 1 | Is |
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Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
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1 | Pyrrhotite | Economic | Ore | ||||
2 | Chalcopyrite | Economic | Ore | ||||
3 | Bornite | Economic | Ore |
Mar 31, 2021 (Therese Pettigrew) - Sample 14SF006 returned 27.85 wt% Fe from a silicate facies iron formation with 15%-50% pyrrhotite in wisps and stringers replacing bedding, also present in rounded clots. Trace local chalcopyrite and bornite. Fine dark grey argillaceous matrix. Rusty weathered surface. 1-5% 1-3 mm garnets locally, 5-10% 4-10 mm euhedral grunerite locally (MRD334).
Data - Geological, Geochemical and Geophysical Data from the Attwood Lake Area, Fort Hope Greenstone Belt, Northwestern Ontario
Publication Number: MRD334 Date: 2016
Author: Azar B.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology of the Attwood Lake Area, Fort Hope Greenstone Belt
Publication Number: P3800 Scale: 1:50,000 Date: 2016
Author: Azar B., Ferguson S.A., Mayer C.
Publisher Name: Ontario Geological Survey
Location:
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For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office