Ontario Geological Survey
Permanent Link to this Record:
MDI52A10SE00003
| Record Name(s) | Black Bay Mining - 1902, Copper Point - 1899, Pritchard Harbour Copper Mine - 1899 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1992-Mar-20 |
| Date Last Modified | 2022-Apr-26 |
| Created By | |
| Revised By |
Primary Commodities: Copper
Secondary Commodities: Lead
Township or Area: Louise Bay Area
Latitude: 48° 32' 27" Longitude: -88° 32' 49.92"
UTM Zone: 16 Easting: 385799 Northing: 5377570 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A10SE
Point Location Description: AMIS Shaft location
Location Method: Conversion from MDI
Access Description: Access is by boat or float-equipped aircraft.
1899: the vein was discovered by F.W. Hockley, working for Pritchard’s Harbor Mining Co. Ltd. 1900: the Pritchard Harbour Copper Mining and Development Company Ltd. had constructed 2 tunnels 6.1 and 6.7 m long, and a shaft 9.4 m deep. 1902: Black Bay Copper Mining Co. was operating the property and had sunk the shaft to 15.2 m. 1903: the shaft was down to 38.1 m. Diamond drilling began in October. Operations at the mine were discontinued some time prior to 1910. 1992: E. Kukkee and R. Kwiatkowski conducted prospecting.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| OP92-250 | 42F08NE0001 | 42F08NE0001 |
Province: Southern
Formation Group: Animikie Group
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 |
|---|
Mar 29, 2018 (Therese Pettigrew) - The area is underlain by Late Precambrian rocks. A red, fine-grained sandstone of the Sibley Group underlies mafic volcanic rocks of the Osler Group. The rock vary from grey to green massive basalts to ophitic and amygdaloidal basalts (McIlwaine and Wallace, 1976).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Copper | Economic | Ore | ||||
| 2 | Malachite | Economic | Ore | ||||
| 1 | Zeolite | Economic | Gangue | ||||
| 2 | Chlorite | Economic | Gangue | ||||
| 3 | Agate | Economic | Gangue | ||||
| 4 | Calcite | Economic | Gangue |
Mar 29, 2018 (Therese Pettigrew) - E. Kukkee and R. Kwiatkowski visited the site with J. Scott and found amygdaloidal basalt with some malachite stain. They also came across an old test pit and one bleb of native copper on a piece of volcanic flow on the lakeshore (AFRI 42F08NE0001). Samples collected in 1902 returned 3.5% Cu (Daily Times Journal, Nov. 15, 1902). J.C. Stephenson’s 1899 report to The Superior Gold and Copper Co. Ltd. indicates that the ore would run from 2.5-4% (RGP mineral deposit files, Thunder Bay office). C. Verran indicated that at 95 feet depth in the shaft, the ore was averaging 22.5% Cu (Daily Times Journal, July 3, 1903). The copper-bearing minerals occur in amygdules in basic laval. The native copper occurs as tiny nuggets up to 1/10 inch in diameter. The copper occurs along with zeolites, chlorite, agate, and calcite, all infill amydules (Tanton, 1931).
Book - RES. GEOL.MIN.DEPT. FILE T.BAY
Publication Number: N/A Date: 1996
Author:
Publisher Name:
Location:
MonoMap - Geology of the Black Bay Peninsula area, District of Thunder Bay
Publication Number: R133 Page: 43-45 Date: 1976
Author: McIlwaine W.H., Wallace H.
Publisher Name: Ontario Division 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: 195 Date: 1931
Author: Tanton, T.L.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100799
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