Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI31E01SE00199

Record: MDI31E01SE00199

General

Mineral Record Identification
Record Name(s) T. Cudney - 1956, Cudney Occurrence - 1986
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1985-May-30
Date Last Modified 2022-Sep-27
Created By
Revised By

Commodities

Primary Commodities: Uranium, Thorium



Location

Township or Area: Monmouth, Monmouth

Latitude: 45° 1' 49.86"    Longitude: -78° 14' 21.58"

UTM Zone: 17    Easting: 717467.75   Northing: 4990048.53    UTM Datum: NAD83

Resident Geologist District: Southern Ontario

NTS Grid: 31E01SE

Point Location Description: General

Location Method: Data Compilation

Access Description: Access to the occurrence is by a secondary road leading west from the town of Wilberforce, 1.11 km away on Highway 648.



Exploration History

1955: T. Cudney – stripping, prospecting


Geology

Province: Grenville

Subprovince: Central Metasedimentary Belt

Terrane: Bancroft

Geological Age: Mesoproterozoic  



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Skarn 2 Skarn Host
Pegmatite 2 Pyroxene-Syenite Pegmatite Contains

Lithology Comments

Dec 07, 2005 (D Laidlaw) - GENETIC CLASS SUBCLASS AND TYPE: PEGMATITE IGNEOUS AND IGNEOUS METASOMATIC PYROXENITES.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1UraniniteEconomicOre
2UranothoriteEconomicOre
3ZirconEconomicOre
4KasoliteEconomicOre
5AlbiteEconomicOre
6CoffiniteEconomicOre
7CalciteEconomicOre
8GoethiteEconomicOre
9PyroxeneEconomicOre
10ScapoliteEconomicOre
11ThorogummiteEconomicOre
12TitaniteEconomicOre
5PyriteEconomicGangue

Mineralization Comments

Jan 27, 2017 (A Wilson) - Geiger readings on the bulldozed strippings were 1x-3x with spot-highs to 12x, and rarely, to 20x. The average is probably about 3x. At the 20x location a pale green diopside rock contains a few minute black grains of what is possibly uraninite-thorianite. On lot 30, concession 16,a syenite pegmatite outcrop has been further exposed by a bulldozed stripping. Geiger readings were 2x except on a fracture in the pyroxene syenite pegmatite giving a count greater than l00x. In this fracture a rusty filling, possibly 1 inch wide, consists of abundant zircon crystals, orange grains of uranothorite, yellow-to-orange kasolite, and pyrite. Four additional bulldozed strippings on this lot expose disintegrated marble with mica-rich bands and silicated marbles. Geiger readings were lx-3x, with spot-highs of 6x and oneof 30x on mica-rich areas. Turbid pink zircon (cyrtolite) crystals up to 5 mm long occur with black coffinite and orange uranothorite in pegmatite. Pink peristerite is a constituent of the pegmatite which contains green pyroxene, black amphibole, titanite, pyrrhotite and goethite. Yellow kasolite has been reported from the deposit.



Mineral Record Details

References

MonoMap - Geology of Glamorgan and Monmouth townships, Haliburton County

Publication Number: OFR5021 Page: 152-153  Date: 1997

Author: Armstrong H.S., Gittins J.

Publisher Name: Ontario Dept. of Mines

Location:


Mono - Uranium and thorium deposits of southern Ontario

Publication Number: OFR5311 Page: 195  Date: 1981

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

Publisher Name: Ontario Geological Survey

Location:


Part - Radioactive mineral occurrences in the Bancroft area

Publication Number: ARV65-06 Page: 85-86  Date: 1998

Author: Satterly J., Hewitt D.F.

Publisher Name: Ontario Dept. of Mines

Location:


Mono - Uranium and thorium deposits of southern Ontario

Publication Number: MDC004 Page: 27-28  Date: 1967

Author: Hewitt D.F.

Publisher Name: Ontario Dept. of Mines

Location:


Book - Rocks and minerals for the collector: Bancroft - Parry Sound area and southern Ontario; Geological Survey of Canada, Miscellaneous Report 39

Publication Number: Misc Rep 39 Page: 77  Date: 1986

Author: Sabina, A.P.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/121046


Map - Monmouth Township, Haliburton County

Publication Number: M2174 Scale: 1:31,680    Date: 1970

Author: Armstrong H.S., Gittins J.

Publisher Name: Ontario Dept. of Mines

Location:


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