Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI31E03SW00007

Record: MDI31E03SW00007

General

Mineral Record Identification
Record Name(s) Milford Bay Mafic Intrusion - 1967
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1991-Feb-12
Date Last Modified 2022-Feb-18
Created By
Revised By

Commodities

Primary Commodities: Miscellaneous Stone



Location

Township or Area: Monck

Latitude: 45° 5' 38.88"    Longitude: -79° 26' 43.74"

UTM Zone: 17    Easting: 622319.002   Northing: 4994582.998    UTM Datum: NAD83

Resident Geologist District: Sudbury

NTS Grid: 31E03SW

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
Diorite 1 Diorite Gneissic Is

Lithology Comments

Apr 15, 2011 (A Wilson) - A large intrusion of dioritic to gabbro composition has been identified north of Leonard Lake. Texturally, the outcrops are described as augen textured to dioritic. The intrusion locally grades into andesine anorthosite. The primary igneous textures are absent or poorly preserved




Mineralization Comments

Apr 15, 2011 (A Wilson) - A thin section examined by D. F. Hewitt returned a noritic chemistry. It contained 45% labradorite, 49% hypersthene, 1% hornblende, 2% biotite, 3% magnetite and minor apatite.



Mineral Record Details

Classification
RankClassification            
1 Dimension Stone

References

MonoMap - Geology and mineral deposits of the Parry Sound-Huntsville area

Publication Number: R052 Scale:     Date: 1967

Author: Hewitt D.F.

Publisher Name: Ontario Dept. of Mines

Location:


MonoMap - Industrial minerals of the Algonquin region

Publication Number: OFR5425 Scale:     Date: 1983

Author: Martin W.

Publisher Name: Ontario Geological Survey

Location:


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

Location:


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