Ontario Geological Survey
Permanent Link to this Record:
MDI52A04NE00002
Record Name(s) | Cloud Lake - 1876, NW 1/4 Lot 5 Con. 2 - 1876 |
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Related Record Type | Simple |
Related Record(s) | |
Record Status | Occurrence |
Date Created | 1979-Jul-30 |
Date Last Modified | 2022-Mar-04 |
Created By | |
Revised By |
Primary Commodities: Silver
Secondary Commodities: Zinc, Lead
Township or Area: Crooks
Latitude: 48° 8' 17.15" Longitude: -89° 31' 39.74"
UTM Zone: 16 Easting: 311954.86 Northing: 5334739.33 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A04NE
Point Location Description: AMIS location
Location Method: Conversion from MDI
1876: stripping. 1907: shaft was sunk. No assessments files were on record.
Province: Southern
Formation Group: Animikie Group
Geological Age: Paleoproterozoic
Rock Type | Rank | Composition | Texture | Relationship | Diabase | 1 | Diabase Sill | Adjacent |
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Mudstone | 2 | Shale | Adjacent | |
Vein | 3 | Host |
Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
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1 | Argentite | Economic | Ore | ||||
1 | Quartz | Economic | Gangue | ||||
2 | Calcite | Economic | Gangue |
Feb 28, 2018 (Therese Pettigrew) - A vein was discovered in 1895, near Cloud Lake, in the northwest quarter of lot 5, Crooks Township, and traced southeast through a distance of about 457.2 m, into the northeast quarter of the same lot. The vein was stripped and tested on the side of a cliff 6 m high, close to the lake. In 1907 a shaft was sunk to a depth of 13.7 m near the western boundary of the northeast quarter of lot 5. The vein cements a fracture zone about 1.2-1.5 m wide striking northwest and passing vertically through a diabase sill 1.5 m thick and flat-lying Animikie shales below. The vein consists of quartz and calcite mineralized with argentite. It was estimated that the material removed from the shaft had a silver content averaging 20 ounces to the ton. The outcrop on the cliff near the lake carried more spectacular values (Tanton, 1931).
Rank | Classification |
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1 | Vein |
Rank | Characteristic |
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1 | Vein |
Mono - Silver cobalt calcite vein deposits of Ontario
Publication Number: MDC010 Scale: Date: 1968
Author: Sergiades A.O.
Publisher Name: Ontario Dept. of Mines
Location:
Publication - Fort William and Port Arthur, and Thunder Cape Map-area, Thunder Bay District, Ontario; Geological Survey of Canada, Memoir 167
Publication Number: GSC Memoir 167 Scale: Date: 1931
Author: Tanton, T.L.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100799
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