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Ontario Geological Survey
Permanent Link to this Record:
MDI52A05SE00024
| Record Name(s) | Big Bear - 1886 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1979-Aug-10 |
| Date Last Modified | 2022-Apr-26 |
| Created By | |
| Revised By |
Primary Commodities: Silver
Secondary Commodities: Zinc, Fluorite, Lead
Township or Area: Paipoonge, Scoble
Latitude: 48° 19' 48.39" Longitude: -89° 34' 21.53"
UTM Zone: 16 Easting: 309327 Northing: 5356190 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A05SE
Point Location Description: From AMIS adit location
Location Method: Data Compilation
1886: an adit was driven 6 m along an E-W vein. A test pit 6 m deep was sunk 30.5 m S of the adit on a quartz veinlet.
Province: Southern
Formation Group: Animikie Group
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Mudstone | 1 | Shale | Adjacent |
|---|---|---|---|---|
| Vein | 2 | Quartz And Calcite | Host | |
| Diabase | 3 | Diabase Sills |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Sphalerite | Economic | Ore | ||||
| 2 | Galena | Economic | Ore | ||||
| 3 | Pyrite | Economic | Ore | ||||
| 1 | Calcite | Economic | Gangue | ||||
| 2 | Quartz | Economic | Gangue | ||||
| 3 | Fluorite | Economic | Gangue |
Jan 29, 2018 (Therese Pettigrew) - The vein is exposed on both banks of a small stream about 183 m above its junction with Oliver Creek. The composite vein strikes north 83 degrees east and occupies a fracture zone, 0.6 m wide, in black, flat-lying Animikie shale. In this vicinity the shale is heavily drift covered, outcrops occurring only along the banks of the creeks. The gangue minerals observed on the dumps are, in order of abundance, calcite, colourless and amethystine quartz, green and purple fluorite. The usual metallic minerals including sphalerite, galena, and pyrite occur. Samples of ore obtained from the outcrop were claimed to have assayed 8 to 124 opt Ag (Tanton, 1931).
| Rank | Classification |
|---|---|
| 1 | Vein |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
Mono - Silver cobalt calcite vein deposits of Ontario
Publication Number: MDC010 Page: 77 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 Page: 137-138 Date: 1931
Author: Tanton, T.L.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100799
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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office