Ontario Geological Survey
Permanent Link to this Record:
MDI31M05NE00070
| Record Name(s) | Nipissing 402 East Part - 1980, Nipissing-O'Brien Mines Ltd. - 1952, Agnico Mines Ltd. - 1968 |
|---|---|
| Related Record Type | Compound |
| Related Record(s) | |
| Record Status | Developed Prospect Without Reported Reserves or Resources |
| Date Created | 1980-Oct-21 |
| Date Last Modified | 2022-Dec-05 |
| Created By | |
| Revised By |
Primary Commodities: Silver
Township or Area: Coleman
Latitude: 47° 24' 3.18" Longitude: -79° 39' 54.71"
UTM Zone: 17 Easting: 600717 Northing: 5250578 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 31M05NE
Point Location Description: Shaft
Location Method: Based on Assessment
pre-1915: Nipissing Mines Co. - trenching and pitting. 1915-1918: underground work from O’Brien No. 14 Shaft; 4000 ft. diamond drilling. 1932-1941: shaft 402 sunk to385 ft. with two levels. 1952-1958: Nipissing-O’Brien Mines Ltd. – exploration and mining in the vicinity of the RL402 and RL403 boundary.
Province: Southern
Subprovince: Cobalt Basin
Supergroup: Huronian Supergroup
Formation Group: Cobalt Group
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Olivine Gabbro | 1 | Olivine | Hanging Wall |
|---|---|---|---|---|
| Conglomerate | 2 | Conglomerate | Contains | |
| Sandstone | 3 | Greywacke | Contains |
Aug 01, 2017 (A Wilson) - Much of the claim is covered by overburden, 70 ft. deep in the northeast part where the Cobalt Lake Valley and Cross Lake faults intersect. Parallel and adjacent to the northwest Cross Lake Fault, the Keweenawan olivine diabase dike occurs. At the south end of the claim, the lower contact between the Nipissing diabase sill and Cobalt sediments occurs. These sediments increase in thickness northwards from 300 ft. to 700 ft. In the southeast corner of the claim, six minor veins in the sediments strike north and contained silver in proximity to the diabase contact.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Silver | Economic | Ore |
Aug 01, 2017 (A Wilson) - A small production of silver was obtained from the southeast corner of the claim where a set of some six minor veins with northerly strike occur in the Cobalt Series sediments in proximity to the bottom diabase contact; on one vein is a small open pit. Underground exploration at depth was restricted to the vicinity of the south line of the claim; a negligible amount was done from shaft No. 402. Apart from this and the drilling done in 1918 no exploration at depth would seem to have been done. The occurrence of the productive zone on this property in the Cobalt sediments in proximity to the bottom diabase contact, at a place where the sediments are some two or three hundred feet thick, is somewhat different than farther south in the 0’ Brien and Nipissing properties. The question of the most promising horizon in RL.402 whether near the lower contact of the Cobalt series or closer to the surface apparently cannot be answered with assurance.
| Rank | Classification |
|---|---|
| 1 | Vein (Cobalt-Type) |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1980 | 10 | MDI |
Mono - Silver cobalt calcite vein deposits of Ontario
Publication Number: MDC010 Page: 84-86, 166-167 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: 52-58 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:
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