Ontario Geological Survey
Permanent Link to this Record:
MDI31M05SW00016
| Record Name(s) | Tashota-Nipgon Mines Ltd. - 1970, Crowrock - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Jan-17 |
| Date Last Modified | 2023-May-03 |
| Created By | |
| Revised By |
Primary Commodities: Copper, Uranium
Township or Area: Brigstocke
Latitude: 47° 18' 36.55" Longitude: -79° 52' 31.55"
UTM Zone: 17 Easting: 584999.56 Northing: 5240244.53 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 31M05SW
Point Location Description: Shaft on east shore of Crowrock Bay, south-east of large island
Location Method: Data Compilation
1970: Tashota Nipigon Mines Limited: geological, geochemical and ground electromagnetic and magnetometer surveys, trenching and stripping in an area which had been previously prospected in the early 1900's.Geochemical survey- B soil horizon Sampling of veins: 2-10 cm quartz-calcite, assays of grabs up to 7% Cu; 0.41% U3O8.; ground geophysical surveys – electromagnetic and magnetometer surveys; 58 feet of linear trenching was done on the two showings on the southwest corner of Hamilton Island. Veins: 2-10 cm quartz-calcitie, Assays of grabs: up to 7% Cu; 0.41% U3O8.
Province: Southern
Subprovince: Cobalt Basin
Supergroup: Huronian Supergroup
Formation Group: Cobalt Group
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Diabase | 1 | Nipissing Diabase | Contains |
|---|---|---|---|---|
| Arkosic Arenite | 2 | Adjacent | ||
| Vein | 3 | Quartz-Calcite | Host |
Nov 01, 2017 (A Wilson) - The geology of the former Tashota Nipigon Mines Limited property is similar to the previously mentioned Cameron showings with several minor quartz—calcite veins (2-10 cm wide) containing disseminated chalcopyrite, pyrite and erythrite.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Erythrite | Economic | Ore | ||||
| 3 | Pyrite | Economic | Ore |
Nov 01, 2017 (A Wilson) - There are two known mineral occurrences on the Tashota Nipigon Mines Limited property. The main one is a copper-cobalt showing on the southwestern corner of Hamilton Island. Chalcopyrite is confined to a vein within a trench located on the shoreline. Assays from trench grab samples indicate values up to 7.0%. Also in the same location and only 15 m north and east of the showing is a quartz-calcite vein with minor amounts of pyrite, chalcopyrite and erythrite (cobalt bloom). A sample of this vein and host rock was taken and indicated the presence of 0.41% UO.
| Rank | Classification |
|---|---|
| 1 | Vein |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
Map - Geological series, Precambrian geology, Brigstocke Township, District of Timiskaming
Publication Number: P3115 Scale: 1:15,840 Date: 1988
Author: Born P., Burbidge G.H.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Precambrian Geology, Brigstocke and Kittson Townships
Publication Number: R275 Page: 85-88 Date: 1997
Author: Born P., Burbidge G.H.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology, Brigstocke Township
Publication Number: M2565 Scale: 1:20,000 Date: 1997
Author: Born P., Burbidge G.H.
Publisher Name: Ontario Geological Survey
Location:
We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.
Please review our Terms of Use agreement for this data product.
For detailed information regarding this mineral record please contact the Kirkland Lake Resident Geologist District Office