Ontario Geological Survey
Permanent Link to this Record:
MDI52N04SW00084
| Record Name(s) | My-Ritt - 1971, Coin Lake #2 - 1971, Coin Lake Gold Mines Ltd. (My-Ritt) DDH #C-71-2 - 1971 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Mar-11 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Heyson
Latitude: 51° 0' 58.48" Longitude: -93° 52' 49.17"
UTM Zone: 15 Easting: 438250 Northing: 5652000 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52N04SW
Point Location Description: OFR5558 p. 521
Location Method: Data Compilation
In 1936, Coin Lake Gold Mines was incorporated, and acquired the property from Red Lake Bay Mines Ltd. In 1936, 1937 and 1938, an intensive program of stripping and trenching was carried out. A mag survey was completed and at least 22 ddhs were drilled. Around 1971, Cochenour Willans Gold Mines Ltd. optioned the property from My-Ritt Gold Mines Ltd. In 1971, VLF-EM, I.P. and geochemical surveys were completed, followed up by three diamond drill holes, totalling 527.65 m.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63.2898 | 52N04SE0152 | 52N04SE0152 |
| 63.2969 | 52N04SW0080 | 52N04SW0080 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Red Lake
Geological Age: Neoarchean
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
| Rock Type | Rank | Composition | Texture | Relationship | Granodiorite | 1 | Sheared | Host |
|---|---|---|---|---|
| Vein | 2 | Quartz-Carbonate | Veins And Stringers | Host |
| Mylonite/Fault Gouge/Pseudotachylite | 3 | Shear Zone | Host | |
| Serpentinite | 4 | Serpentinite | Near | |
| Gabbro | 5 | Mafic Dikes | Near |
Nov 12, 2014 (K R Kettles) - Most of the property is underlain by the Dome granodiorite Stock. The western portion of the property is underlain by serpentinite. Mafic dikes occupying shear zones are present in this part of the Dome Stock. The two most prominent shear zones strike ENE, dipping 60 deg. S and NNW dipping 85 deg. N. Gold mineralization occurs in quartz-carbonate veins within shear zones hosted by the granodiorite. The mineralizaion occurs in shear zones within the granodiorite. Quartz-carbonate stringers, which occur in the shears, are mineralized with gold, pyrite and minor chalcopyrite. A strong VLF-EM anomaly coresponds to a shear zone.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Pyrite | Economic | Ore | ||||
| Quartz | Alteration | Silicification | 1 | Strong | Veins | ||
| Carbonate | Alteration | Carbonatization | 2 | Strong | Veins | ||
| Chlorite | Alteration | Chloritic | 3 | Medium | Disseminated | ||
| Epidote | Alteration | Epidotization | 4 | Medium | Disseminated | ||
| Saussurite | Alteration | Saussuritization | 5 | Medium | Disseminated |
Nov 12, 2014 (K R Kettles) - Gold mineralization occurs in quartz-carbonate veins within shear zones hosted by the granodiorite. The mineralizaion occurs in shear zones within the granodiorite. Quartz-carbonate stringers, which occur in the shears, are mineralized with gold, pyrite and minor chalcopyrite. A 2.1 m intersection of drill core returned an assay of 0.04 oz.ton (1.37 g/tonne) Au.
Dec 07, 2005 (K R Kettles) - In the vicinity of the shear zones, the granodiorite is altered to a salmon pink colour. Alteration includes sericitization, epidotization, silicification and saussuritization.
| Rank | Characteristic |
|---|---|
| 1 | Vein |
Mono - Gold occurrences, prospects, and deposits of the Red Lake area, volumes 1 and 2
Publication Number: OFR5558 Scale: Date: 1987
Author: Durocher M.E., Burchell P.S., Andrews A.J.
Publisher Name: Ontario Geological Survey
Location:
Map - Heyson Township, northern part, Kenora District
Publication Number: M2125 Scale: 1:12,000 Date: 1968
Author: Ferguson S.A.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geology and gold mineralization, Red Lake greenstone belt
Publication Number: P3107 Scale: 1:50,000 Date: 1991
Author: Durocher M.E., Burchell P.S., Wallace H., Andrews A.J., Hugon H., Atkinson B.T.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology, Red Lake
Publication Number: P3227 Scale: 1:50,000 Date: 1993
Author: Atkinson B.T., Stone D.
Publisher Name: Ontario Geological Survey
Location:
Map - Geology and Tectonostratigraphic Assemblages, East Uchi Subprovince, Red Lake and Birch-Uchi Belts, Ontario
Publication Number: P3460 Scale: 1:250,000 Date: 2004
Author: Sanborn-Barrie M., Rogers N., Skulski T., Parker J.R., McNicoll V.J., Devaney J.R.
Publisher Name: Geological Survey of Canada, Ontario Geological Survey
Location:
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