Ontario Geological Survey
Permanent Link to this Record:
MDI42A02SE00039
| Record Name(s) | J.P. Rysack - 1944, Cobalt Consolidated - 1956 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Feb-09 |
| Date Last Modified | 2023-Mar-08 |
| Created By | |
| Revised By |
Primary Commodities: Copper
Secondary Commodities: Gold
Township or Area: Robertson
Latitude: 48° 8' 19.71" Longitude: -80° 47' 35.42"
UTM Zone: 17 Easting: 515386.98 Northing: 5331749.039 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 42A02SE
Point Location Description: Chip samples from trenches (Assay Plan Map in KL 2428).
Location Method: Conversion from MDI
Access Description: The property is easily accessible by four-wheel drive vehicle in summer or by snow machine in winter. It can be reached by driving a distance of about 370 miles from Toronto, following highways 400, 11, 65 and 66 to its junction with a dirt road and from there an additional 18 miles north. The dirt road deteriorates beyond the Matachewan Native Reserve over the final 9 miles. The property can also be reached from either Kirkland Lake or Timmins. It is about 51 road miles from Kirkland Lake.
1992: Falconbridge Ltd: ground magnetometer and VLF-EM surveys 1991: Queenston Mining Inc/Strike Minerals Inc: line cutting, geological mapping, magnetometer and horizontal loop EM surveys, airborne geophysics (GEOTEM survey) 1975: Imperial Oil Ltd: ground magnetic and electromagnetic surveys 1974: Ontario Division of Mines: airborne geophysical survey 1965: Denison Mines Ltd: airborne geophysical surveys (magnetic and electromagnetic) 1956: Cobalt Consolidated Mining Corp. Ltd: geological mapping and diamond drilling of six holes 1954-55: New Metalore Mining Company Ltd: ground magnetic and electromagnetic surveys
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| KL3224 | 42A02NE9950 | 42A02NE9950 |
| 63.615 | 42A02NW0101 | 42A02NW0101 |
| 10 | 42A02NW0040 | 42A02NW0040 |
| 63.1789 | 42A02NE0022 | 42A02NE0022 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Geological Age: Archean
Apr 06, 2010 (J Suma-Momoh) - 'A sheared contact with greenstone to the north and granite to the south bisects the exposure. There are several other shears trending southeast in the granite. The assay plan indicated that it is in the porphyritic border phase of the granite that the copper mineralization occurs. The adjacent greenstone is only slightly mineralized.' REF: KL 2428. About 500 m west of the property is a northwest-trending fault or deformation zone.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic pillowed flow | 1 | Basalt Flows | Pillowed |
|---|---|---|---|---|
| Granite | 2 |
Apr 06, 2010 (J Suma-Momoh) - Two rock types occupy most of the south-west quarter of Robertson Township. A contact trending southeast between Keewatin basic lavas to the north and granite to the south roughly bisects this area. REF: KL 2428. Diamond drilling on the property has also exposed ultramafic metavolcanics (komatiitic flows); mafic metavolcanics (basalts), metasediments (sulphide-rich chert bands); felsic intrusives (feldspar porphyry and felsite dykes); and mafic intrusives (diabase dykes). REF: KL 3436.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 3 | Gold | Economic | Ore | ||||
| 2 | Pyrite | Economic | Gangue |
Apr 06, 2010 (J Suma-Momoh) - Assay results of chip samples collected from trenches have returned values ranging from 1 % to 4 % Cu; and from nil, through trace to 0.02 oz/t Au. REF: (Assay Certificate, dated July 7th, 1947) In KL 2428. 'The logs of the eight holes drilled by Cobalt Consolidated Corporation listed 0.26 % Cu as the best assay obtained, and two surface samples ran 0.86 % Cu, over 6.4 ft; and 1.72 % Cu over 1.6 ft, respectively.' REF: KL 2428.
File - Resident Geologist files KL1986, KL2428, KL3436
Publication Number: Date:
Author:
Publisher Name:
Location: Kirkland Lake RGP office
Map - Kirkland Lake data series, Robertson Township, District of Timiskaming
Publication Number: P0881 Scale: 1:15,840 Date: 1980
Author: Ploeger F.R., Grabowski G.P.B.
Publisher Name: Ontario Geological Survey
Location:
Mono - Copper, nickel, lead and zinc deposits of Ontario
Publication Number: MDC012 Page: 380 Date: 1969
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geological Compilation of the Matachewan Area, Abitibi Greenstone Belt
Publication Number: P3527 Scale: 1:100,000 Date: 2003
Author: Ayer J.A., Trowell N.F., Josey S.D., Nevills M., Valade L.
Publisher Name: Ontario Geological Survey
Location:
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