Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI31C15NE00011

Record: MDI31C15NE00011

General

Mineral Record Identification
Record Name(s) East MacDonald's Corners - 1989
Related Record Type Simple
Related Record(s)
Record Status Discretionary Occurrence
Date Created 1990-Nov-09
Date Last Modified 2022-Dec-05
Created By
Revised By

Commodities

Primary Commodities: Talc



Location

Township or Area: Dalhousie

Latitude: 44° 57' 32.03"    Longitude: -76° 30' 7.97"

UTM Zone: 18    Easting: 381518   Northing: 4979482    UTM Datum: NAD83

Resident Geologist District: Southern Ontario

NTS Grid: 31C15NE

Point Location Description: Point 1.8 km east of MacDonalds Corners.

Location Method: Data Compilation

Access Description: About 1.8 km east of MacDonald’s Corners on Lanark County Road 12. A marble ridge trending northeast, in the southeast corner of the lot and immediately north of a crossroad.



Geology

Province: Grenville

Subprovince: Central Metasedimentary Belt

Terrane: Sharbot Lake

Geological Age: Mesoproterozoic  



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Marble 1 Tremolite-Bearing Host
Marble 2 Talcose Host

Lithology Comments

Sep 15, 2015 (A Wilson) - Approximately 2m of talc-rich marble outcrops on the southeast side of the ridge.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1TalcEconomicOre
2TremoliteEconomicOre
3PhlogopiteEconomicOre
4SerpentineEconomicOre

Mineralization Comments

Sep 15, 2015 (A Wilson) - The marble contains approximately 3% talc and is possibly more extensive (and higher grade) under overburden to the southeast.



Mineral Record Details

Characteristics
Rank Characteristic            
1 Disseminated

References

Mono - Talc in southeastern Ontario

Publication Number: OFR5714 Page: 162-164  Date: 1989

Author: LeBaron P.S., van Haaften S.

Publisher Name: Ontario Geological Survey

Location:


Map - Clarendon-Dalhousie-Darling area, counties of Frontenac and Lanark

Publication Number: M1956-04 Scale: 1:63,360    Date: 1997

Author: Peach P.A., Smith B.L.

Publisher Name: Ontario Dept. of Mines

Location:


Part - Geology of the Clarendon-Dalhousie area

Publication Number: ARV65-07.001 Date: 1998

Author: Smith B.L.

Publisher Name: Ontario Dept. of Mines

Location:


Map - Precambrian Geology, Sharbot Lake Area

Publication Number: P3440 Scale: 1:50,000    Date: 2001

Author: Easton R.M.

Publisher Name: Ontario Geological Survey

Location:


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