Ontario Geological Survey
Permanent Link to this Record:
MDI31M04SE00027
| Record Name(s) | Upper Twin Lake Occurrence - 1912 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1980-May-12 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Cobalt, Silver
Secondary Commodities: Copper, Platinum, Palladium
Township or Area: Riddell
Latitude: 47° 0' 13.35" Longitude: -79° 44' 28.79"
UTM Zone: 17 Easting: 595684 Northing: 5206345 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 31M04SE
Point Location Description: approximate location of vein
Location Method: Data Compilation
1912: Discovery
Province: Southern
Subprovince: Cobalt Basin
Supergroup: Huronian Supergroup
Formation Group: Cobalt Group
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Diabase | 1 | Diabase | Contains |
|---|---|---|---|---|
| Vein | 2 | Quartz-Carbonate | Brecciated | Host |
Jan 29, 2013 (A Wilson) - The showing is hosted in the outer margins of a Nipissing diabase sill, just north of a contact with pebbly wackes and conglomerates of the Coleman Member. Minor pyrite, arsenopyrite and smaltite are contained in a 10 cm wide calcite-quartz vein. The vein strikes southeasterly and is traceable for a distance of 2-3 m.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Arsenopyrite | Economic | Ore | ||||
| 3 | Smaltite | Economic | Ore |
Jan 29, 2013 (A Wilson) - Grab samples collected by P. Born assayed 50 ppb Pt, 30 ppb Pd, 34 ppb Co and low Ag and Cu values.
| Rank | Classification |
|---|---|
| 1 | Vein |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
Part - The Matabitchuan area (districts of Timiskaming and Nipissing)
Publication Number: ARV34-03 Scale: Date: 1998
Author: Todd E.W.
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:
MonoMap - Precambrian geology, Cassels and Riddell townships
Publication Number: R271 Scale: Date: 1989
Author: Born P.
Publisher Name: Ontario Geological Survey
Location:
Map - Matabitchuan area, districts of Timiskaming and Nipissing, Ontario
Publication Number: ARM34B Scale: 1:63,360 Date: 1997
Author: Todd E.W.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geological series, Tomiko area (west half), District of Nipissing
Publication Number: P0678 Scale: 1:63,360 Date: 1997
Author: Lumbers S.B.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Map - Geological Compilation of the Cobalt-Temagami Area, Abitibi Greenstone Belt
Publication Number: P3581 Scale: 1:100,000 Date: 2006
Author: Ayer J.A., Chartrand J.E., Grabowski G.P.B., Josey S.D., Rainsford D.R.B., Trowell N.F.
Publisher Name: Ontario Geological Survey
Location:
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For detailed information regarding this mineral record please contact the Kirkland Lake Resident Geologist District Office