Ontario Geological Survey
Permanent Link to this Record:
MDI52E10NW00073
| Record Name(s) | Great Northwest - 1984 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1984-Feb-01 |
| Date Last Modified | 2022-Feb-17 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Copper
Township or Area: Glass
Latitude: 49° 37' 40.57" Longitude: -94° 57' 41.93"
UTM Zone: 15 Easting: 358337 Northing: 5499112 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52E10NW
Point Location Description: AMIS shaft location
Location Method: Data Compilation
Access Description: The occurrence is on old mining location C.R.26, on the northern side of Clytie Bay, about 600 m northwest of Clytie Bay Landing. The old workings may be reached by boat, or by foot from a cottage access road.
1903: Great Northwest Mining Company Ltd. sunk a 3 x 2.1 x 10 m deep shaft. 1968: Olympia Mines Inc. conducted EM and magnetic surveys.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63.2287 | 52E10NW8503 | 52E10NW8503 |
Province: Superior
Subprovince: Wabigoon
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Intermediate lava flow-unsubdivided | 1 | Dacite |
|---|---|---|---|---|
| Porphyry-unsubdivided | 2 | Felsic Tuff Or Dyke |
May 14, 2020 (Therese Pettigrew) - A moderate to strong, pervasive foliation, striking 055 and dipping nearly vertically, is oblique to a feldspar porphyry unit, which strikes 115 degrees. The porphyry is either intrusive or is a tuffaceous horizon, conformable with the surrounding intermediate and mafic tuffaceous rocks (Davies and Smith, 1988). Dacite breccia with abundant cube pyrite is exposed in a pit about 300 m north of the main shaft (Davies, 1978).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore |
May 14, 2020 (Therese Pettigrew) - The shaft was sunk on a sheared and brecciated felsic porphyry, with local zones of quartz-sericite schist trending 055 and dipping vertically. No major quartz veins are visible, although quartz is present as 1 cm wide veinlets and as irregular lenses. The sheared rock is iron-stained, and minor disseminated pyrite is visible on the muck pile. A grab sample of mineralized quartz taken by Davies contained trace gold (Davies and Smith, 1988).
Mono - The geological setting of gold occurrences in the Lake of the Woods area
Publication Number: OFR5695 Scale: Date: 1988
Author: Davies J.C., Smith P.M.
Publisher Name: Ontario Geological Survey
Location:
Part - Mines of western Ontario
Publication Number: ARV13-01.005 Scale: Date: 1998
Author: Carter W.E.H.
Publisher Name: Ontario Bureau of Mines
Location:
MonoMap - Geology of the Shoal Lake-Western Peninsula area, District of Kenora
Publication Number: OFR5242 Scale: Date: 1978
Author: Davies J.C.
Publisher Name: Ontario Geological Survey
Location:
Mono - Gold deposits of the Kenora-Fort Frances area, districts of Kenora and Rainy River
Publication Number: MDC016 Scale: Date: 1976
Author: Beard R.C., Garratt G.L.
Publisher Name: Ontario Division 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 Kenora Resident Geologist District Office