GeologyOntario has moved. You will be redirected to the new site in 10 seconds. If you are not immediately redirected please follow the below link to the new GeologyOntario platform. For assistance please contact us.
Ontario Geological Survey
Permanent Link to this Record:
MDI31M05SE00146
| Record Name(s) | Cobalt Gem Mining Co. Property - 1909 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 1980-Nov-03 |
| Date Last Modified | 2022-Feb-18 |
| Created By | |
| Revised By |
Primary Commodities: Silver
Township or Area: Coleman
Latitude: 47° 22' .62" Longitude: -79° 39' 31.76"
UTM Zone: 17 Easting: 601263 Northing: 5246803 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 31M05SE
Point Location Description: Shaft
Location Method: AMIS Site Visit
Access Description: From Hwy 11B turn southeast on Coleman Road and continue for 3.65 km to the Penn Mill/University Road turnoff; travel southwest for 0.8 km to the boat launching area; canoe southeast for 750m to the bay southeast of Island No.22; traverse southeast 200m to shaft.
1907-1909: Cobalt Gem Mining Company Limited – trenching, DD, 2 adits, 1 shaft, very large silver nugget found early in century. 1954: Cobalt Gem Mining Company Limited – DD-2.
Province: Southern
Subprovince: Cobalt Basin
Supergroup: Huronian Supergroup
Formation Group: Cobalt Group
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Quartz Diabase | 1 | Quartz Diabase | Host |
|---|---|---|---|---|
| Vein | 2 | Calcite | Contains |
Feb 18, 2015 (A Wilson) - A vein, that strikes N.58° E., and dips 80° N., passes through the Gem shaft. On the shaft dump is calcite up to3 inches wide and cobalt mineralization in minor amount. No records of results obtained in underground exploration are available but presumably nothing of economic importance was found. The central part of the sill - in the vicinity ofwhich the surface of this claim lies - has not in general been ore-bearing.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Silver | Economic | Ore |
Jul 24, 2017 (A Wilson) - A rich silver-bearing loose piece of ore or nugget found on this claim on top of a high hill, is the largest piece of this nature found to-date in the Cobalt camp. It is presently on exhibit in the Provincial Buildings, Toronto. Gibson gives the dimensions as 5 feet 5 inches, by 2 feet 5 inches by 1 foot 6 inches; the silver content is given as 9,715 ounces, the total weight as 1,640 pounds. Adhering country rock was determined by Knight to be Cobalt Series greywacke. This and the place at which it was found indicates its derivation from the rich veins, exposed at surface in the vicinity of Kerr Lake, some three quarters of a mile to the north. Several small nuggets in the same glacial train were found on the claim.
| Rank | Classification |
|---|---|
| 1 | Vein (Cobalt-Type) |
| Rank | Characteristic |
|---|---|
| 2 | Stratabound |
| 1 | Vein |
Mono - Preliminary report on parts of Coleman Township, concession 4, lots 1 to 5, and Gillies Limit, the eastern "A" claims, District of Timiskaming
Publication Number: PR1961-06 Scale: Date: 1998
Author: Thomson R.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Silver cobalt calcite vein deposits of Ontario
Publication Number: MDC010 Scale: Date: 1968
Author: Sergiades A.O.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Cobalt silver area, southeastern sheet, Timiskaming District
Publication Number: M2052 Scale: 1:12,000 Date: 1997
Author: Thomson R.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Coleman Township, Concession 3, lots 1, 2, 3, Concession 4, lots 1-5, and Gillies Limit, blocks 1, 2, eastern part of ""A"" claims, District of Timiskaming, Ontario
Publication Number: P0096 Scale: 1:4,800 Date: 1997
Author: Thomson R.
Publisher Name: Ontario Dept. of Mines
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