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Ontario Geological Survey
Permanent Link to this Record:
MDI31F06NW00046
| Record Name(s) | Gorman Lake - 1953, Gorman Lake Occurrence - 1981 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1984-May-29 |
| Date Last Modified | 2023-Aug-03 |
| Created By | |
| Revised By |
Primary Commodities: Thorium
Secondary Commodities: Uranium
Township or Area: Brudenell
Latitude: 45° 25' 40.6" Longitude: -77° 25' 57.28"
UTM Zone: 18 Easting: 309708.997 Northing: 5033370.006 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F06NW
Point Location Description: Dot symbol ' Ra ' on Wmost island in Gorman Lake.
Location Method: Data Compilation
Access Description: Reached by canoe from the N side of the lake, adjacent to the road.
1954: D.J. Drohan -trenching
Province: Grenville
Subprovince: Central Metasedimentary Belt
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Granite | Host |
|---|---|---|---|---|
| Gneiss-Unsubdivided | 2 | Biotite-Quartz-Feldspar | Contains | |
| Gneiss-Unsubdivided | 3 | Syenite | Adjacent |
Jun 23, 2011 (A Wilson) - Granite pegmatite crosscuts biotite-quartz-feldspar gneiss.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Allanite | Economic | Ore | ||||
| 2 | Uraninite | Economic | Ore | ||||
| 4 | Sphene | Economic | Ore | ||||
| 5 | Epidote | Economic | Ore | ||||
| 3 | Scapolite | Economic | Gangue |
Jun 23, 2011 (A Wilson) - Radioactive minerals occur in a 3 by 6 meter zone of fractures carrying epidote, scapolite, and minor hematite and pyrite. Grab sample R-77-79-6 collected by the OGS returned 160 ppm U3O8 and 7200 ppm ThO2.
| Rank | Classification |
|---|---|
| 1 | Pegmatite |
Part - Geology of the Brudenell-Raglan area
Publication Number: ARV62-05 Page: 83 Date: 1998
Author: Hewitt D.F., Carlson H.D.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Industrial minerals of the Pembroke-Renfrew area, part 2
Publication Number: MDC022 Page: 169-170 Date: 1981
Author: Storey C.C., Vos M.A.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Radioactive mineral deposits of the Pembroke-Renfrew area
Publication Number: MDC023 Page: 35-37 Date: 1981
Author: Masson S.L., Gordon J.B.
Publisher Name: Ontario Geological Survey
Location:
Mono - Uranium and thorium deposits of southern Ontario
Publication Number: OFR5311 Page: 574 Date: 1981
Author: Gordon J.B., Rybak U.C., Robertson J.A.
Publisher Name: Ontario Geological Survey
Location:
Map - Brudenell-Raglan area, County of Renfrew, Ontario
Publication Number: M1953-02 Scale: 1:63,360 Date: 1997
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Barry's Bay, Precambrian geology
Publication Number: M2461 Scale: 1:100,000 Date: 1983
Author: Lumbers S.B.
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