Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI31E01SE00206

Record: MDI31E01SE00206

General

Commodities

Primary Commodities: Uranium, Thorium

Location

Township or Area: Harcourt

Latitude: 45° 5' 14.39"    Longitude: -78° 13' 9.78"

UTM Zone: 17    Easting: 718821.777   Northing: 4996413.541    UTM Datum: NAD83

Resident Geologist District: Southern Ontario

NTS Grid: 31E01SE

Point Location Description: A point N of Farquhar Lake in lot 5, con 3.

Location Method: Conversion from MDI

Access Description: The Jet property covers lots 1-8, con 3-4 and the S half of lots 1-8 in con 6. The occurrence itself consists of several dykes located within the lots and cons listed. The lots within cons 3 and 4 can be reached from Grace and Farquhar Lakes, to the immediate S. The lot within con 5 is accessible via a secondary road 5 ml N from Wilberforce, on Hwy 648.

Exploration History

1957 : stripping, pits and trenches by P.J. McLean on the N half of lot 6, con 5. 1958: Harcourt Mining Co Ltd carried out geological and scint surveys, stripping and trenching. They drilled 5 holes - 4 on the N half of lot 6, con 4 (1,022 ft); 1on the S half of lot 6, con 5 (80 ft). 1968 : Jet Uranium Ltd carried out radiometric, geological and mag surveys. They drilled 8 holes - 3 on the S half of lot 4, con 4 (899 ft); 2 on the S half of lot 5, con 4 (640 ft) and 3 on the N half of lot 5, con 4 (668 ft). 9 grab samples from the dyke on lot 6, con 4, averaged 0.053 % U3O8 (radiometric). About 100 lbs of uranothorite were picked from a trench along a small pegmatite dyke.

Assessment Work on File

Geology

Province: Grenville

Geological Age: Mesoproterozoic  

Geology Comments

Dec 07, 2005 (C Papertzian) - Sills and dykes of granite and syenite pegmatite (up to 150 ft wide) intrude metasediments. Radioactive minerals occur in pegmatites which are usually associated with hematization and fracturing.

Lithology

Mineralization

Mineral Record Details

References

Book - OGS 1958-9 AFRO # 3,4

Publication Number: N/A Date: 2001

Author:

Publisher Name:

Location:

Mono - Uranium and thorium deposits of southern Ontario

Publication Number: MDC004 Page: 24  Date: 1967

Author: Hewitt D.F.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Some radioactive mineral occurrences in the counties or districts of Frontenac, Haliburton, Hastings, Manitoulin, Nipissing, Parry Sound, Peterborough, and Renfrew

Publication Number: OFR5057 Page: 7-9  Date: 1997

Author: Satterly J.

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:

Mono - Pegmatite mineral resources of Ontario

Publication Number: IMR021 Page: 54  Date: 1997

Author: Hewitt D.F.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Uranium and thorium deposits of southern Ontario

Publication Number: OFR5311 Page: 124-5  Date: 1981

Author: Gordon J.B., Rybak U.C., Robertson J.A.

Publisher Name: Ontario Geological Survey

Location:

Mono - Precambrian geology of the Centre Lake area, Haliburton and Hastings counties

Publication Number: OFR5658 Page: 109-110  Date: 1987

Author: Bright E.G.

Publisher Name: Ontario Geological Survey

Location:

Mono - A catalogue of the Ontario localities represented by the mineral collection of the Royal Ontario Museum

Publication Number: MP070 Page: 398-9  Date: 1977

Author: Satterly J.

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