Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI31F06NE00078

Record: MDI31F06NE00078

General

Mineral Record Identification
Record Name(s) South Algona Sebastopol Nepheline - 1981
Related Record Type Simple
Related Record(s)
Record Status Discretionary Occurrence
Date Created 1993-May-19
Date Last Modified 2022-Jun-15
Created By
Revised By

Commodities

Primary Commodities: Nepheline Syenite



Location

Township or Area: Sebastopol, Algona

Latitude: 45° 28' 24.78"    Longitude: -77° 14' 57.84"

UTM Zone: 18    Easting: 324179.997   Northing: 5038019.001    UTM Datum: NAD83

Resident Geologist District: Southern Ontario

NTS Grid: 31F06NE

Point Location Description: approximate

Location Method: Data Compilation

Access Description: 0.8 km east of Hermitage Lake.



Geology

Province: Grenville

Subprovince: Central Metasedimentary Belt

Geological Age: Mesoproterozoic  



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Pegmatite 1 Nepheline Syenite Contains
Syenite 2 Contains

Lithology Comments

Jun 13, 2011 (A Wilson) - The nepheline syenite pegmatite zone extends for a strike length of about 3 km and has a maximum width of about 0.3 km. The zone contains 25 - 30% nepheline syenite bodies.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1NephelineEconomicOre

Mineralization Comments

Jun 13, 2011 (A Wilson) - The nepheline syenite bodies contain on average 30-40% nepheline. Other minerals include albite, biotite and magnetite, and in a few places, sodalite. The nepheline is creamy white in colour and in a few places is pink. Crystals vary in size from a few centimeters to 20-30 cm embedded in an albite matrix.



Mineral Record Details

Classification
RankClassification            
1 Pegmatite
Characteristics
Rank Characteristic            
1 Intrusive

References

MonoMap - Geology of the Clontarf area, Renfrew County

Publication Number: R209 Page: 47-48  Date: 1981

Author: Themistocleous S.G.

Publisher Name: Ontario Geological Survey

Location:


Map - Clontarf, Renfrew County

Publication Number: M2433 Scale: 1:31,680    Date: 1980

Author: Themistocleous S.G.

Publisher Name: Ontario Geological Survey

Location:


Part - Mineral occurrences in the Renfrew area

Publication Number: ARV53-03 Page: 92  Date: 1998

Author: Satterly J.

Publisher Name: Ontario Dept. of Mines

Location:


Part - Economic geology of eastern Ontario, corundum and other minerals

Publication Number: ARV07-03.001 Date: 1998

Author: Miller W.G., Goodwin W.L.

Publisher Name: Ontario Bureau of Mines

Location:


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