Ontario Geological Survey
Permanent Link to this Record:
MDI31D09NW00073
| Record Name(s) | Cromwell Occurrence - 1955, Cromwell Uranium and Development Company Ltd. - 1955, Regis Resources Ltd. - 2005 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1982-Jan-11 |
| Date Last Modified | 2023-Jun-09 |
| Created By | |
| Revised By |
Primary Commodities: Uranium, Thorium
Secondary Commodities: Niobium, Vermiculite
Township or Area: Cavendish, Cavendish
Latitude: 44° 44' 23.15" Longitude: -78° 21' 38.31"
UTM Zone: 17 Easting: 708962 Northing: 4957431 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31D09NW
Point Location Description: Trench symbol in Lot 14, Con 5.
Location Method: Data Compilation
Access Description: The property lies 1.6 km west of Catchacoma hamlet with access via bush roads.
1955 : Cromwell Uranium and Development Co Ltd.-.stripping, trenching and 14 DDH ( 3,696 ft ) 1969:Quebec Uranium Mining Corporation – airborne radiometric survey, DD-5-1507.5 ft. 1975: Imperial Oil Ltd. – geological and radiometric surveys. 2005-2009: Regis Resources Inc. – sampling, assays, reclamation report
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63.2326 | 31D09NW8549 | 31D09NW8549 |
| 29 | 31D09NW8567 | 31D09NW8567 |
| 2.2002 | 31D09NW8542 | 31D09NW8542 |
| 2.30739 | 20000000801 | 20000000801 |
| 2.41805 | 20000004247 | 20000004247 |
Province: Grenville
Subprovince: Central Metasedimentary Belt
Terrane: Elzevir
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Contains |
|---|---|---|---|---|
| Gneiss-Unsubdivided | 2 | Quartz-Biotite | Contains |
Jan 18, 2017 (A Wilson) - Uranium mineralization is found in a granite pegmatite dike with exposed widths up to 11.3 m and an exposed length of 32.6 m. It is typically coarse, segregated granite pegmatite with buff to pink potash sections. The property lies just west of the Anstruther granite gneiss batholith, in biotite paragneisss cut by numerous dikes and bodies of leucogranite and granite pegmatite.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Uranothorite | Economic | Ore | ||||
| 2 | Allanite | Economic | Ore | ||||
| 3 | Betafite | Economic | Ore | ||||
| 4 | Uranophane | Economic | Ore | ||||
| 5 | Magnetite | Economic | Ore | ||||
| 6 | Zircon | Economic | Ore |
Jan 18, 2017 (A Wilson) - Geiger counter readings on leucogranite average 8 times background. The middle of the granite pegmatite reads 12-46 times background. Pyrochlore occurs in a granite pegmatite and a mineral analysis indicated 30% Cb2O3.
| Rank | Classification |
|---|---|
| 1 | Pegmatite |
| Rank | Characteristic |
|---|---|
| 1 | Stratabound |
Mono - Pegmatite mineral resources of Ontario
Publication Number: IMR021 Page: 55, 65 Date: 1997
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Part - Radioactive mineral occurrences in the Bancroft area
Publication Number: ARV65-06 Page: 162 Date: 1998
Author: Satterly J., Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Publication - A Catalogue of Canadian Minerals; Geological Survey of Canada, Paper 69-45
Publication Number: Paper 69-45 Page: 443 Date: 1972
Author: Traill, R.J.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102924
Mono - An inventory of the mineral resources in Peterborough County
Publication Number: OFR5635 Page: 211-212 Date: 1987
Author: Menard A.G.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Columbium (niobium) deposits of Ontario
Publication Number: MDC014 Page: 51 Date: 1971
Author: Ferguson S.A.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Mono - Uranium and thorium deposits of southern Ontario
Publication Number: OFR5311 Page: 478 Date: 1981
Author: Gordon J.B., Rybak U.C., Robertson J.A.
Publisher Name: Ontario Geological Survey
Location:
Mono - Uranium and thorium deposits of southern Ontario
Publication Number: MDC004 Page: 59 Date: 1967
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Precambrian Geology of Cavendish Township, Central Metasedimentary Belt, Grenville Province
Publication Number: OFR6229 Page: 96 Date: 2012
Author: Easton R.M.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology of Cavendish Township and Environs, Grenville Province
Publication Number: P3605 Scale: 1:20,000 Date: 2010
Author: Easton R.M.
Publisher Name: Ontario Geological Survey
Location:
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