Ontario Geological Survey
Permanent Link to this Record:
MDI31F12SW00040
Record Name(s) | Plexman - 2000 |
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Related Record Type | Simple |
Record Status | Occurrence |
Date Created | 1985-Nov-04 |
Date Last Modified | 2022-Jan-05 |
Created By | Q Unknown |
Revised By | C Papertzian |
Primary Commodities: Feldspar (Nonmetals)
Township or Area: Dickens
Latitude: 45° 31' 47.14" Longitude: -77° 52' 28.27"
UTM Zone: 18 Easting: 275542.952 Northing: 5045822.671 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F12SW
Point Location Description: Diamond symbol ' P 32 ', just S of Hwy 60.
Location Method: Conversion from MDI
Access Description: Reached by a 390 m traverse through the bush from Hwy 60, at a point 780 m W of the Spectacle Lake road.
Pre 1954 : the history and procuction of this deposit is unknown. 1954 : old feldspar pits in the immediate vicinity of the deposit were prospected by A.E.Plexman.
Province: Grenville
Geological Age: Mesoproterozoic
Dec 07, 2005 (C Papertzian) - The area is underlain by rocks of the Algonquin Batholith. A zoned pegmatite dyke, hosted in gneiss, with a width of 0.6 m (SE end) to 6 m and a probable length of 38 m, has been worked for feldspar. It is similar to the Madawaska River deposit and has a spur of graphitic granite that extends to the NE. Where the dyke has been trenched it contains about 20 % feldspar. See MDC 22 for a detailed description and section. Aeschynite is associated with biotite in the pegmatite over a 2 m sq area.
Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Contains |
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Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
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1 | Microcline | Economic | Ore | ||||
2 | Quartz | Economic | Ore |
Map - Geological series, industrial minerals of the Pembroke-Renfrew area, southern Ontario
Publication Number: P2209 Scale: 1:126,720 Date: 1980
Author: Vos M.A., Storey C.C.
Publisher Name: Ontario Geological Survey
MonoMap - Industrial minerals of the Pembroke-Renfrew area, part 2
Publication Number: MDC022 Scale: Date: 1981
Author: Storey C.C., Vos M.A.
Publisher Name: Ontario Geological Survey
Map - Geological series, radioactive mineral deposits of the Pembroke-Renfrew area, southern Ontario
Publication Number: P2210 Scale: 1:126,720 Date: 1980
Author: Masson S.L., Gordon J.B., Storey C.C.
Publisher Name: Ontario Geological Survey
MonoMap - Radioactive mineral deposits of the Pembroke-Renfrew area
Publication Number: MDC023 Scale: Date: 1981
Author: Masson S.L., Gordon J.B.
Publisher Name: Ontario Geological Survey
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