Ontario Geological Survey
Permanent Link to this Record:
MDI31D10NW00002
Record Name(s) | Coboconk - 1982 |
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Related Record Type | Simple |
Related Record(s) | |
Record Status | Discretionary Occurrence |
Date Created | 1982-Jan-21 |
Date Last Modified | 2022-Apr-14 |
Created By | |
Revised By |
Primary Commodities: Bentonite
Township or Area: Somerville
Latitude: 44° 39' 21.75" Longitude: -78° 47' 41.25"
UTM Zone: 17 Easting: 674841.489 Northing: 4947107.725 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31D10NW
Point Location Description: Precise
Location Method: Conversion from MDI
Access Description: SW of Coboconk, NE end of Balsam Lake. The occurrence is in the west quarry near Coboconk.
Rock Type | Rank | Composition | Texture | Relationship | Limestone | 1 | Host |
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Dec 07, 2005 (D Laidlaw) - Bentonite occurs over a 6 inch zone interbedded with limestone of the Lowville Formation of the Black River Group of Ordovician age. It is pale olive in colour and is 13 feet below surface (NMI File, 31D/10 Bentonite 1).
Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
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1 | Bentonite | Economic | Ore |
Dec 07, 2005 (D Laidlaw) - Composition is about 80% illite, 15%-20% montmorillonite and trace chlorite. Also present are opaque and non-opaque heavy minerals (NMI File, 31D/10 Bentonite 1).
Publication - Preliminary Map Fenelon Falls Victoria, Peterborough and Haliburton Counties Ontario; Geological Survey of Canada, Paper no. 52-31
Publication Number: GSC Paper 52-31 Page: 7-8 Date: 1996
Author: Caley, J F; Liberty, B A
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/108330
MonoMap - Industrial minerals of the Algonquin region
Publication Number: OFR5425 Page: 15 Date: 1983
Author: Martin W.
Publisher Name: Ontario Geological Survey
Location:
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