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Ontario Geological Survey
Permanent Link to this Record:
MDI31M05SE00135
| Record Name(s) | Fairfax Mining Ltd. - 1947, Fleming Group - 1947, White Falcon Mining Co. Ltd. - 1968 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1980-Sep-18 |
| Date Last Modified | 2023-Aug-23 |
| Created By | |
| Revised By |
Primary Commodities: Cobalt, Silver
Secondary Commodities: Copper
Township or Area: Gillies Limit
Latitude: 47° 19' 21.14" Longitude: -79° 38' 28.15"
UTM Zone: 17 Easting: 602683 Northing: 5241903 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 31M05SE
Point Location Description: Pit
Location Method: AMIS Site Visit
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 51 | 31M05SE0035 | 31M05SE0035 |
| 2.21016 | 31M05SE2033 | 31M05SE2033 |
Province: Southern
Subprovince: Cobalt Basin
Supergroup: Huronian Supergroup
Formation Group: Cobalt Group
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Terrigenous-Clastic-Unsubdivided | 1 | Cobalt | Hanging Wall |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Contains | ||
| Felsic lava flow-unsubdivided | 3 | Contains | ||
| Gabbroid-Unsubdivided | 4 | Intrudes | ||
| Vein | 5 | Intrudes |
Aug 11, 2017 (A Wilson) - About 30 years ago J. Burke discovered on what is now T.45406, at 800 feet north and 350 feet east of the southwest claim corner, a cobalt bearing vein. The vein gangue is for the most part quartz but calcite is also present. The strike is N.30ºE., the dip nearly vertical. The strike of the Keewatin rocks intersected by the vein is northwesterly. The vein was tested by a rock trench. Numerous calcite, as well as quartz-calcite veins were intersected in Keewatin volcanics, lamprophyre. Lorrain granite and Nipissing diabase. Silver and cobalt-bearing veins were intersected in hole F-3 J it seems certain that these veins are distinct from the vein exposed at surface and explored by holes K-l to K-7. In hole F-3 at footage 163.4 native silver (in leaves up to an estimated thickness of 1/25 inch), argentite, and cobalt mineralization in small amount occurred in a 1/3-inch calcite vein; native silver in small amount also occurred in the wall rock.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 2 | Silver | Economic | Ore | ||||
| 3 | Galena | Economic | Ore | ||||
| 4 | Chalcopyrite | Economic | Gangue | ||||
| 5 | Sphalerite | Economic | Gangue |
Aug 11, 2017 (A Wilson) - The surface vein was intersected at a vertical depth of 75 ft. and showed ½ inch of vein running 2.1% cobalt and 8.04 oz./t Ag. A further vein showed 0.5 inch of cobalt assaying 3.93 oz./t Ag at a vertical depth of 60 ft. Grades up to 275 g/t Ag and 2.1% Co over 1.3 cm. Plasket Occurrence: 750 m south and 820 m east; 820 g/t silver; 760 m south and 195 m. west 1890 g/t Ag and 12% Cu.
| Rank | Classification |
|---|---|
| 1 | Vein (Cobalt-Type) |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
File - Resident Geologist files CO-1030, CO-1087, CO-1100, CO-1139
Publication Number: Date:
Author:
Publisher Name:
Location: Kirkland Lake RGP office
Mono - Silver cobalt calcite vein deposits of Ontario
Publication Number: MDC010 Page: 274-275, 300 Date: 1968
Author: Sergiades A.O.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Preliminary report on parts of Coleman Township and Gillies Limit, near New Lake, southeast of Cobalt, District of Timiskaming
Publication Number: PR1961-02 Page: 56-60 Date: 1998
Author: Thomson R.
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:
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For detailed information regarding this mineral record please contact the Kirkland Lake Resident Geologist District Office