Ontario Geological Survey
Permanent Link to this Record:
MDI000000000226
Record Name(s) | J. Loon Zone - 2002 |
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Related Record Type | |
Related Record(s) | |
Record Status | Occurrence |
Date Created | 2007-Jan-16 |
Date Last Modified | 2022-Sep-01 |
Created By | |
Revised By |
Primary Commodities: Gold, Silver
Township or Area: Wesleyan Lake Area
Latitude: 51° 10' 51.87" Longitude: -91° 35' 48.85"
UTM Zone: 15 Easting: 598069.001 Northing: 5670897.004 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52O04NE
Point Location Description: Location from assessment file map (Nelson 2002).
Location Method: Data Compilation
Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
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2.27635 | 52O03NW2005 | 52O03NW2005 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Meen-Dempster
Geological Age: Archean
Jan 16, 2007 (Mark Puumala) - The geology in the area of this occurrence is described in MDI52O04NE00019.
Rock Type | Rank | Composition | Texture | Relationship | Tonalite | 1 | Trondjemite | Contains |
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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 | Pyrite | Economic | Ore | ||||
2 | Chalcopyrite | Economic | Ore | ||||
3 | Molybdenite | Economic | Ore | ||||
Carbonate | Alteration | Carbonatization | 1 | ||||
Sericite | Alteration | Sericitization | 2 | ||||
Biotite | Alteration | Biotitic | 3 | ||||
Talc | Alteration | 4 |
Jan 16, 2007 (Mark Puumala) - The J. Loon Zone is described by Nelson (2002) as a subvertical, approximately 1 metre wide 075-striking shear zone that occurs within trondjemitic rocks of the North Bamaji Pluton. The shear zone contains quartz veins and sulphide mineralization (pyrite, chalcopyrite and molybdenite) as well as biotite, sericite, carbonate and talc alteration. The interpreted strike-length of this mineralized zone is 370 m. Nelson (2002) indicates that surface samples collected from this zone have assayed up to 47.8 g/t Au and 300.8 g/t Ag.
Rank | Classification |
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1 | Vein (Polymetallic) |
Rank | Characteristic |
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1 | Sheared |
2 | Vein |
MonoMap - Geology of the Slate Falls area, District of Kenora (Patricia Portion)
Publication Number: R232 Date: 1985
Author: Wallace H.
Publisher Name: Ontario Geological Survey
Location:
Article - New Insights from Archean Bedrock Mapping in the Fry Lake Area, Meen-Dempster Greenstone Belt, Northwestern Ontario
Publication Number: OFR6192.020 Date: 2006
Author: Dinel E., Pettigrew N., Gagnon M.
Publisher Name: Ontario Geological Survey
Location:
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