Ontario Geological Survey
Permanent Link to this Record:
MDI31M05NE00190
| Record Name(s) | Red Jacket Property - 1908, Keweenaw Silver Mines Ltd. - 1926, Ambrose Murphy and Associates - 1936, Norden Steel Alloys Ltd. - 1941, Sanymac Mining and Development Ltd. - 1942, Silver Wedge Mines Ltd. - 1953, Coballoy Mines and Refiners - 1956 |
|---|---|
| Related Record Type | Compound |
| Related Record(s) | |
| Record Status | Developed Prospect Without Reported Reserves or Resources |
| Date Created | 1980-Oct-23 |
| Date Last Modified | 2023-Aug-24 |
| Created By | |
| Revised By |
Primary Commodities: Cobalt, Silver
Township or Area: Gillies Limit
Latitude: 47° 22' 34.88" Longitude: -79° 42' 13.51"
UTM Zone: 17 Easting: 597853 Northing: 5247803 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 31M05NE
Point Location Description: Shaft
Location Method: AMIS Site Visit
1908-1909 – Red Jacket Property – shaft sinking; 1926-27: underground operations; crosscutting, 2200 ft. of lateral work 1932: Ambrose Murphy and associates – 275 ft. of crosscutting, 25 ft. of drifting. 1941: Norden Steel Alloys Ltd. – property acquired, underground work commenced. 1942-52: Sanymac Mining and Development Co. Ltd.- underground and surface work; small smelting plant erected; DD-2. 1956-57: Coballoy Mines and Refiners Ltd. – dewatered the shaft and drilled one hole from underground to the Cobalt Lake Fault
Province: Southern
Subprovince: Cobalt Basin
Supergroup: Huronian Supergroup
Formation Group: Cobalt Group
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Sandstone | 1 | Greywacke | Adjacent |
|---|---|---|---|---|
| Diabase | 2 | Diabase | Contains |
Jul 26, 2017 (A Wilson) - Cobalt Series sediments about 100 ft. thick unconformably overlie steeply dipping Keewatin volcanics in the west of the property. To the east the cobalt Series are faulted out against the Keewatin volcanics along the Cobalt Lake Fault that strikes NNE; other minor faults strike E-W and N-S. The Red Jacket Vein extends 900’ E-W; it traverses Cobalt Series sediments and underlying Keewatin rocks where it follows an interflow bed. The Second Vein is similar, also following an interflow bed. Cobalt arsenides with minor silver occur silver occur in a gangue of calcite.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Arsenopyrite | Economic | Ore | ||||
| 2 | Cobaltite | Economic | Ore | ||||
| 3 | Silver | Economic | Ore |
Jul 26, 2017 (A Wilson) - A sample cut from the shipment was assayed and reported as follows – 1.63% Cobalt; 0.10% Nickel; 0.52 oz/t Silver; 6.2% arsenic.
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1939 | 3 |
Silver 93 Cobalt 161 |
MDC 010, p.192-193 | Total Production 1938-39: cobalt 354 lbs.; silver 3 ozs. |
File - Resident Geologist file CO-0754
Publication Number: Date:
Author:
Publisher Name:
Location: Kirkland Lake RGP office
Map - Cobalt silver area, northern sheet, Timiskaming District
Publication Number: M2050 Scale: 1:12,000 Date: 1997
Author: Thomson R.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Preliminary report on parts of Coleman Township and Gillies Limit to the south and southwest of Cobalt
Publication Number: PR1960-03 Page: 34-39 Date: 1998
Author: Thomson R.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Silver cobalt calcite vein deposits of Ontario
Publication Number: MDC010 Page: 84-86, 192-193 Date: 1968
Author: Sergiades A.O.
Publisher Name: Ontario Dept. of Mines
Location:
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