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Ontario Geological Survey
Permanent Link to this Record:
MDI31M05NE00065
| Record Name(s) | La Rose Consolidated Mining Co. - 1903, La Rose Mines Ltd. - 1926, New La Rose Mining and Smelting Ltd. - 1948, Silver Miller Mines Ltd. - 1969 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Past Producing Mine Without Reserves or Resources |
| Date Created | 1980-Oct-14 |
| Date Last Modified | 2023-Aug-24 |
| Created By | |
| Revised By |
Primary Commodities: Cobalt, Silver
Secondary Commodities: Copper, Lead, Nickel, Zinc
Township or Area: Coleman
Latitude: 47° 23' 59.06" Longitude: -79° 40' 33.17"
UTM Zone: 17 Easting: 599913 Northing: 5250437 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 31M05NE
Point Location Description: La Rose Main Shaft
Location Method: AMIS Site Visit
Province: Southern
Subprovince: Cobalt Basin
Supergroup: Huronian Supergroup
Formation Group: Cobalt Group
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Sandstone | 1 | Greywacke | Contains |
|---|---|---|---|---|
| Granite | 2 | Intrudes | ||
| Diabase | 3 | Diabase | Intrudes | |
| Vein | 4 | Quartz-Calcite | Intrudes |
Jul 27, 2017 (A Wilson) - Cobalt Series sediments in the vicinity of the main shaft are some 160 feet thick on the hanging wall and about 400 feet in the footwall of the Cobalt Lake fault. In the hanging wall, above some 20 to 30 feet of basal conglomerate and extending to surface, is a varied assemblage in which greywacke, commonly bedded, predominates. Bedded greywacke, grit, and greywacke containing occasional pebbles and boulders is exposed in the open pits near the shaft and the assemblage may be seen on the westerly-facing cliff on the east side of Highway No. 11 as far north as the adit whose portal lies 750 feet south and 250 feet west of the northeast corner of claim JB.4. Lateral variation in the nature of the rocks in the assemblage is well shown in the vicinity of the adit; bedded greywacke grades in a short distance into conglomerate going south from the adit. Near the adit the assemblage is overlain by boulder-rich conglomerate, which forms the top of the hill south of Highway No. 11, At shaft No. 10 (in JB.4) on the footwall side of the Cobalt Lake fault, the Cobalt series is 40? feet thick; a vertical section through the shaft furnished to Knight by the LaRose Mines, Limited shows the following succession from the contact with Keewatin to surface as follows: Conglomerate 10 ft, Banded slate 60 ft. Conglomerate 285 ft , Slate 30 ft, Conglomerate 32 ft. Keewatin Nipissing diabase is exposed at surface on the footwall of the Cobalt Lake Fault and, as reported by Miller, on the 62-foot level.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Silver | Economic | Ore | ||||
| 3 | Chalcopyrite | Economic | Ore | ||||
| 4 | Galena | Economic | Gangue | ||||
| 5 | Sphalerite | Economic | Gangue | ||||
| 6 | Pyrrhotite | Economic | Gangue |
Jul 27, 2017 (A Wilson) - From veins on JS.14 has been obtained a very large production of silver, a substantial amount of cobalt and a little copper. This is one of the few cobalt properties from which ore has been mined for its copper content alone. No production has been obtained from claim JB.4, nor indeed is any silver-cobalt-nickel showing known on it.
Dec 05, 2022 (Q Unknown) - Note: copper: significant production, no significant reserves remain.
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1948 | 55297 |
Silver 817504251 Cobalt 458455 Nickel 50399 |
MRC 10, p.144-145, 147 | TOTAL PRODUCTION1904-1948 (INTERMITTENT) |
File - Resident Geologist files CO-0697, CO-0698
Publication Number: Date:
Author:
Publisher Name:
Location: Kirkland Lake RGP office
Part - Geology of the mine workings of Cobalt and South Lorrain silver areas
Publication Number: ARV31-02.001 Page: 93-95 Date: 1998
Author: Knight C.W.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Silver cobalt calcite vein deposits of Ontario
Publication Number: MDC010 Page: 84-86, 144-145 Date: 1968
Author: Sergiades A.O.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Preliminary report on part of Coleman Township, concession 6, lots 1 to 6, District of Timiskaming
Publication Number: PR1961-03 Page: 79-85 Date: 1998
Author: Thomson R.
Publisher Name: Ontario Dept. of Mines
Location:
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:
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For detailed information regarding this mineral record please contact the Kirkland Lake Resident Geologist District Office