Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41I07SE00017

Record: MDI41I07SE00017

General

Mineral Record Identification
Record Name(s) Graham Lake - 1952
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1980-Mar-14
Date Last Modified 2022-Mar-04
Created By
Revised By

Commodities

Primary Commodities: Uranium, Feldspar (Nonmetals)

Secondary Commodities: Rare Earth Elements, Silica



Location

Township or Area: Servos

Latitude: 46° 16' 18.8"    Longitude: -80° 44' 50.38"

UTM Zone: 17    Easting: 519469   Northing: 5124288.001    UTM Datum: NAD83

Resident Geologist District: Sudbury

NTS Grid: 41I07SE

Point Location Description: Precise

Location Method: AMIS Site Visit

Access Description: From highway 69S, south of Estaire, turn at Trout Lake and follow to Graham Lake road. Follow Graham Lake Road for approximately 0.8 m, then take ATV road for 100 m to site.



Exploration History

1952: Graham Lake Mining Company - exploration




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Gneiss-Unsubdivided 1 Contains
Pegmatite 2 Host

Lithology Comments

Feb 20, 2009 (A Wilson) - The showing consists of a dike trending N55E and dips 80°SE that is exposed in an open cut, 75 feet long, about 18 feet wide and with a 30-foot face. The open cut is driven into the side of a hill near the northern shore of Graham Lake.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
2FeldsparEconomicOre
3EuxeniteEconomicOre
1QuartzEconomicGangue

Mineralization Comments

Feb 20, 2009 (A Wilson) - Mineralization consists of alkalic feldspar, quartz, minor muscovite, biotite, Fe-Ti oxides and erratically distributed markedly radioactive euxenite-polycrase. The euxenite-polycrase forms massive aggregates up to 15 cm across, concentrated near the footwall of the dike. Quartz is most abundant near the core and forms irregularly distributed pods throughout the dike. Grab samples collected from the site returned 8.37% U3O2



Mineral Record Details

References

MonoMap - Columbium (niobium) deposits of Ontario

Publication Number: MDC014 Scale:     Date: 1971

Author: Ferguson S.A.

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:


MonoMap - Geology of the Burwash area, districts of Nipissisng, Parry Sound, and Sudbury

Publication Number: R116 Scale:     Date: 1975

Author: Lumbers S.B.

Publisher Name: Ontario Division of Mines

Location:


Publication - Canadian deposits of uranium and thorium; Geological Survey of Canada, Economic Geology Series 16

Publication Number: GSC EconGeol 16 Scale:     Date: 1952

Author: Lang, A.H.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/102450


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