Ontario Geological Survey
Permanent Link to this Record:
MDI000000002291
| Record Name(s) | Corvette Lake Basalt Sulphides - 1986 |
|---|---|
| Related Record Type | |
| Record Status | Occurrence |
| Date Created | 2019-Apr-30 |
| Date Last Modified | 2021-Dec-15 |
| Created By | Therese Pettigrew |
| Revised By | Therese Pettigrew |
Primary Commodities: Zinc, Copper
Township or Area: Killraine
Latitude: 48° 53' 1.96" Longitude: -87° 17' 38.55"
UTM Zone: 16 Easting: 478443 Northing: 5414589 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42D14NW
Point Location Description: DDH VL-11 on map in Assessment file 42D14NW8293
Location Method: Data Compilation
1983: Noranda carried out humus sampling and an airborne mag and EM survey. 1985: Noranda drilled 1 DDH totalling 878 m. 1986: Noranda carried out geological mapping, EM and magnetic surveys, and drilled 4 DDH totalling 698.5 m. 1987: Noranda drilled 2 DDH totalling 267.3 m. 1990-92: Minnova Inc. carried out geological mapping, EM surveys, and drilled 11 DDH including 1 DDH totalling 185 m on this horizon.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 16 | 42D14NW8293 | 42D14NW8293 |
| 15 | 42D14SW0028 | 42D14SW0028 |
| 2.14325 | 42D14NW0513 | 42D14NW0513 |
| 2.9454 | 42D14SW0029 | 42D14SW0029 |
| 2.10208 | 42D14SW0025 | 42D14SW0025 |
| 12 | 42D14SW0033 | 42D14SW0033 |
| 13 | 42D14SW0034 | 42D14SW0034 |
| 14 | 42D14SW0027 | 42D14SW0027 |
| 2.5966 | 42D14SW0037 | 42D14SW0037 |
| 2.6778 | 42D14NW0016 | 42D14NW0016 |
| 2.9237 | 42D14SW0030 | 42D14SW0030 |
| 2.6803 | 42D14SW0036 | 42D14SW0036 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Schreiber-Hemlo
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Basalt | Host |
|---|---|---|---|---|
| Feldspar Porphyry | 2 | Dyke |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore | ||||
| 3 | Magnetite | Economic | Ore | ||||
| 4 | Chalcopyrite | Economic | Ore | ||||
| 5 | Sphalerite | Economic | Ore |
Apr 30, 2019 (Therese Pettigrew) - Mineralization in the lower pillowed basalts of the Corvette Lake basalts consists of 2-5% stringer sulphides, several metres thick. The stringer pyrrhotite-magnetite +/- pyrite +/- sphalerite locally appeared to occur as interpillow sulphides, yet often were associated with narrow silica haloes with up to 168 ppm Cu and 6760 ppm Zn over 0.25 m and 413 ppm Cu and 152 ppm Zn over 1.10 m (Assessment report 42D14NW8293). Samples from DDH VL-2 drilled by Noranda in 1984 assayed up to 2600 ppm Cu and 350 ppm Zn over 1.0 m and 1500 ppm Cu and 7000 ppm Zn over 0.5 m (Assessment report 42D14SW0033).
Map - Schreiber area, District of Thunder Bay, Ontario
Publication Number: ARM47J Scale: 1:31,680 Date: 1997
Author: Bartley M.W., Harcourt G.A.
Publisher Name: Ontario Dept. of Mines
Map - Nipigon-Schreiber, geological compilation series, Thunder Bay District
Publication Number: M2232 Scale: 1:253,440 Date: 1973
Author: Carter M.W., McIlwaine W.H., Wisbey P.A.
Publisher Name: Ontario Division of Mines
Map - Geological series, Precambrian geology of the Schreiber area, east part, Thunder Bay District
Publication Number: P2391 Scale: 1:15,840 Date: 1981
Author: Carter M.W.
Publisher Name: Ontario Geological Survey
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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office