Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI31F12SW00040

Record: MDI31F12SW00040

General

Mineral Record Identification
Record Name(s) Plexman - 2000
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

Commodities

Primary Commodities: Feldspar (Nonmetals)



Location

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.



Exploration History

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.


Geology

Province: Grenville

Geological Age: Mesoproterozoic  



Geology Comments

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.




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Pegmatite 1 Contains

Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1MicroclineEconomicOre
2QuartzEconomicOre

Mineral Record Details

References

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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For detailed information regarding this mineral record please contact the Southern Ontario Resident Geologist District Office