Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI31F06NW00049

Record: MDI31F06NW00049

General

Mineral Record Identification
Record Name(s) Rockingham Mines Occurrence - 1955
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1986-Mar-04
Date Last Modified 2023-Aug-03
Created By
Revised By

Commodities

Primary Commodities: Thorium, Uranium



Location

Township or Area: Brudenell

Latitude: 45° 25' 23.28"    Longitude: -77° 26' 42.18"

UTM Zone: 18    Easting: 308716.999   Northing: 5032865.002    UTM Datum: NAD83

Resident Geologist District: Southern Ontario

NTS Grid: 31F06NW

Point Location Description: approximate

Location Method: Data Compilation

Access Description: Immediately E of a small lake and SW of Gorman Lake. A road heading E from Rockingham ends after about 6 Km at a T-junction. About 300 m S of this junction a bush road leads E then N to the occurrence.



Exploration History

1955: Rockingham Mines Ltd. - stripping, pitting, trenching, DD


Geology

Province: Grenville

Subprovince: Central Metasedimentary Belt

Geological Age: Mesoproterozoic  



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Marble 1 Biotite-Diopside Host
Gneiss-Unsubdivided 2 Feldspathic Contains

Lithology Comments

Jun 24, 2011 (A Wilson) - Apatite-biotite-diopside marble lies between quartzo-feldspathic gneisses. The overlying gneisses are rusty due to the presence of pyrite and pyrrhotite (5-15%) Interlayered with the rusty feldspathic gneiss are thin pyroxenite-carbonate horizons which frequently contain apatite.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1UraniniteEconomicOre
2UranothoriteEconomicOre
3ApatiteEconomicOre
4BiotiteEconomicOre
5DiopsideEconomicOre
6PyriteEconomicOre

Mineralization Comments

Jun 24, 2011 (A Wilson) - A grab sample collected from a waste pile by Rockingham Mines Ltd. assayed 0.172% U3O8 and 0.17% ThO2. A grab sample from the discovery pit assayed 1.3% U3O8 and 0.09% ThO2. A selected sample from a pit approximately 200 ft. south of the discovery pit assayed 1.37% U3O8 and 0.40% ThO2. Satterly reported a uranothorite crystal from a metapyroxenite skarn which assayed 20.73% U3O8 and 40.37% ThO2.



Mineral Record Details

Classification
RankClassification            
1 Skarn

References

Publication - Catalogue of Canadian minerals; Geological Survey of Canada, Paper 80-18

Publication Number: Paper 80-18 Page: 315  Date: 1980

Author: Traill, R J

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/119519


MonoMap - Radioactive mineral deposits of the Pembroke-Renfrew area

Publication Number: MDC023 Page: 38-39  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: 577  Date: 1981

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

Publisher Name: Ontario Geological Survey

Location:


Mapset - Uranium mineral potential charts for parts of southern Ontario

Publication Number: OFR5260 Page: Chart C  Scale: 1:126,720    Date: 1979

Author: Robertson J.A., Bright E.G., Gordon J.B., Springer J.S., MacDonald C.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:


Map - Geological series, radioactive mineral deposits of the Pembroke-Renfrew area, southern Ontario

Publication Number: P2210 Scale: 1:126,720    Date: 1980

Author: Masson S.L., Gordon J.B., Storey C.C.

Publisher Name: Ontario Geological Survey

Location:


Part - Radioactive mineral occurrences in the Bancroft area

Publication Number: ARV65-06 Date: 1998

Author: Satterly J., Hewitt D.F.

Publisher Name: Ontario Dept. of Mines

Location:


Report an Error

We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.


Terms of Use

Please review our Terms of Use agreement for this data product.


Ministry Contact Information

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