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Ontario Geological Survey
Permanent Link to this Record:
MDI31L01SW00002
| Record Name(s) | Maskwa Lake Quarry - 1981, Brent Deposit - 1942, Muskwa Quarry - 1971 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect Without Reported Reserves or Resources |
| Date Created | 1981-Mar-16 |
| Date Last Modified | 2022-Apr-04 |
| Created By | |
| Revised By |
Primary Commodities: Mica, Mineral Specimen
Secondary Commodities: Feldspar (Nonmetals)
Township or Area: Deacon
Latitude: 46° 4' 4.42" Longitude: -78° 27' 22.5"
UTM Zone: 17 Easting: 696725 Northing: 5104737 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31L01SW
Point Location Description: quarry
Location Method: AMIS Site Visit
Access Description: Proceed south from highway 17 on the Brent access road for 32.2km to the Brent Crater observation tower. Park and walk north on road 100m. Quarry is 25m east of road.
1942, 1950-51: H. McDonald – in production 1953: North Bay Mica Company Limited – in production
Province: Grenville
Subprovince: Central Gneiss Belt
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Contains |
|---|---|---|---|---|
| Gneiss-Unsubdivided | 2 | Contains |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Muscovite | Economic | Ore | ||||
| 2 | Biotite | Economic | Ore | ||||
| 4 | Allanite | Economic | Ore | ||||
| 5 | Chlorite | Economic | Ore | ||||
| 6 | Magnetite | Economic | Ore | ||||
| 7 | Serpentine | Economic | Ore | ||||
| 3 | Plagioclase | Economic | Gangue |
Feb 14, 2013 (A Wilson) - The muscovite is described as being exceptionally well formed books, requiring little trimming. The mica is mostly stained.
| Rank | Classification |
|---|---|
| 1 | Pegmatite |
| Rank | Characteristic |
|---|---|
| 1 | Discordant |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1953 | 1 |
Mica 1 Tonne |
ARV63 pt. 2 p. 113 | 560 tons of rock yielding 1 ½ tons of rough mica |
Publication - Mica Deposits of Canada; Geological Survey of Canada, Economic Geology Series 19
Publication Number: Econ Geol 19 Page: 86 Date: 1960
Author: Hoadley, J W
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102453
Part - Mining operations in 1953
Publication Number: ARV63-02 Page: 113 Date: 1997
Author: Field D.J.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Pegmatite mineral resources of Ontario
Publication Number: IMR021 Page: 30 Date: 1997
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Publication - Rocks and Minerals for the Collector, Ottawa to North Bay, Ontario; Hull to Waltham, Quebec; Geological Survey of Canada, Paper no. 70-50
Publication Number: Paper 70-50 Date: 1971
Author: Sabina, A.P.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102463
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For detailed information regarding this mineral record please contact the Southern Ontario Resident Geologist District Office