Ontario Geological Survey
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MDI31M05NE00080
| Record Name(s) | Nipissing 400 - 1904, Nipissing 400 W1/2-401 Parcel 2 - 1902, Nipissing Mining Company Ltd. - 1922, Nipissing O'Brien - 1952, Agnico Mines Ltd. - 1958, Silver Regent Mines Ltd. - 1967 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Past Producing Mine Without Reserves or Resources |
| Date Created | 1980-Oct-22 |
| Date Last Modified | 2023-Aug-24 |
| Created By | |
| Revised By |
Primary Commodities: Silver, Cobalt
Township or Area: Coleman
Latitude: 47° 24' 3.11" Longitude: -79° 41' 3.24"
UTM Zone: 17 Easting: 599280.65 Northing: 5250551.51 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 31M05NE
Point Location Description: Shaft
Location Method: Data Compilation
1904-1932: Nipissing Mines Company Ltd. – 5 shafts; extensive numbers of drifts and cross cuts; in production. 1967-68: Shaft No. 73 was dewatered and some drifting was carried out. Drifting was carried out along the new No.101 Vein where assays of 3790 oz./t silver over 1½ inches were encountered. Leaf and ruby silver extend to 2 feet on either side of the vein.
Province: Southern
Subprovince: Cobalt Basin
Supergroup: Huronian Supergroup
Formation Group: Cobalt Group
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Sandstone | 1 | Hanging Wall |
|---|---|---|---|---|
| Diabase | 2 | Nipissing Diabase | Hanging Wall |
Jul 25, 2017 (A Wilson) - Subhorizontal Cobalt sediments increase in thickness from 150 ft. to 600 ft. southeasterly and overlie steeply dipping Keewatin volcanics. Nipissing diabase formerly overlie the sediments. Two pre-ore fault systems occur; e.g. the reverse Valley Fault that strikes NNE with low dip east, and the normal Fault 64 that strikes ESE with steep dip south. Veins tend to strike parallel to Keewatin volcanic beds which follow a broad fold; they occur in both volcanics and overlying Cobalt sediments but with rich silver ore-shoots restricted to the later within 150 ft. above the conformity. Silver mineralization also occurred in wall rocks.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Silver | Economic | Gangue |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1932 | 1 |
Silver |
MDC010, p.162-163 | Production :Vein No. 73 -13,000,000 ounces; Vein No. 98- 4,000,000 ounces; Vein No. 64 probably well over 10,000,000 ounces; Vein No. 490 probably several million ounces |
File - Resident Geologist file CO-0723
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:
Part - Geology of the mine workings of Cobalt and South Lorrain silver areas
Publication Number: ARV31-02.001 Page: 46-57 Date: 1998
Author: Knight C.W.
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 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, 162-163 Date: 1968
Author: Sergiades A.O.
Publisher Name: Ontario Dept. of Mines
Location:
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