Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI31E03NW00005

Record: MDI31E03NW00005

General

Mineral Record Identification
Record Name(s) Mary Lake - 1987
Related Record Type Simple
Record Status Discretionary Occurrence
Date Created 1991-Apr-16
Date Last Modified 2022-Jan-05
Created By Q Unknown
Revised By A Wilson

Commodities

Primary Commodities: Gabbro



Location

Township or Area: Stephenson, Stephenson

Latitude: 45° 12' 37.27"    Longitude: -79° 18' 35.1"

UTM Zone: 17    Easting: 632729   Northing: 5007707.997    UTM Datum: NAD83

Resident Geologist District: Sudbury

NTS Grid: 31E03NW

Point Location Description: Approximate

Location Method: Data Compilation



Geology

Province: Grenville

Subprovince: Central Gneiss Belt

Geological Age: Mesoproterozoic  



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Amphibolite 1 Host
Gneiss-Unsubdivided 2 Granodioritic To Trondhjemitic Contains

Lithology Comments

Apr 05, 2011 (A Wilson) - Marmont and Johnston mapped the occurrence as a strongly recrystallized coronitic metagabbro. It is described as being deformed, with a well-developed vein network texture and boudinage. The authors also identified garnet within the body. Map 3411 identifies the rock as heterogeneous grey gneisses containing discontinuous layers and boudins of amphibolite.




Mineral Record Details

Classification
RankClassification            
1 Dimension Stone

References

Mono - Mineral deposits studies in the Huntsville-Parry Sound-Powassan area, a progress report

Publication Number: OFR5647 Scale:     Date: 1987

Author: Marmont C., Johnston M.

Publisher Name: Ontario Geological Survey


Map - Parry Sound-Huntsville area, Ontario

Publication Number: M2118 Scale: 1:126,720    Date: 1967

Author: Hewitt D.F.

Publisher Name: Ontario Dept. of Mines


Map - Precambrian Geology, Bracebridge Area

Publication Number: P3411 Scale: 1:50,000    Date: 2000

Author: Lumbers S.B., Vertolli V.M.

Publisher Name: Ontario Geological Survey


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