Ontario Geological Survey
Permanent Link to this Record:
MDI52A03NE00004
| Record Name(s) | Thompson Island - 1853 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1984-Feb-01 |
| Date Last Modified | 2022-Apr-27 |
| Created By | |
| Revised By |
Primary Commodities: Barite
Township or Area: Spar And Victoria Islands Area
Latitude: 48° 10' 20.23" Longitude: -89° 9' 11.21"
UTM Zone: 16 Easting: 339926.99 Northing: 5337691.22 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A03NE
Point Location Description: Transfer
Location Method: Conversion from MDI
1853: vein was discovered by T. MacFarlane for the Montreal Mining Company. 1873-74: some development work was done, consisting of an adit level run in on the vein where it shows in the face of the cliff where it forms the north shore of the island, for a distance of about 7.6 m, from the end of which a 2.7 m winze was sunk on the vein.
Province: Southern
Formation Group: Animikie Group
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Diabase | 1 | Diabase Dyke | Adjacent |
|---|---|---|---|---|
| Vein | 2 | Host | ||
| Terrigenous-Clastic-Unsubdivided | 3 |
Feb 28, 2018 (Therese Pettigrew) - The island consists of diabase dykes running lengthways through it with a small development of argillite between the two.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Barite | Economic | Ore | ||||
| 2 | Sphalerite | Economic | Ore | ||||
| 3 | Galena | Economic | Ore | ||||
| 4 | Pyrite | Economic | Ore | ||||
| 1 | Calcite | Economic | Gangue | ||||
| 2 | Quartz | Economic | Gangue |
Feb 28, 2018 (Therese Pettigrew) - Barite occurs in a vein 1.2 m thick. Minor amounts of sphalerite, galena, pyrite, calcite and quartz occur (Tanton, 1931).
| Rank | Classification |
|---|---|
| 1 | Vein |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
Book - 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: 189 Date: 1931
Author: Tanton, T.L.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100799
Mono - Barite in Ontario
Publication Number: IMR010 Page: 6 Date: 1997
Author: Guillet G.R.
Publisher Name: Ontario Dept. of Mines
Location:
Publication - Copper-Nickel Mineral Occurrences in Pigeon River Area, Ontario; Geological Survey of Canada, Paper no. 35-1
Publication Number: GSC Paper 35-1 Page: 7-8 Date: 1935
Author: Tanton, T.L.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/101044
Book - RES. GEOL. MIN. DEP. FILE. TB
Publication Number: N/A Date: 1996
Author:
Publisher Name:
Location:
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