Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41J07NE00018

Record: MDI41J07NE00018

General

Mineral Record Identification
Record Name(s) Denison Mine - 1956
Related Record Type Simple
Related Record(s)
Record Status Past Producing Mine With Reserves or Resources
Date Created 1991-Sep-01
Date Last Modified 2023-Aug-03
Created By
Revised By

Commodities

Primary Commodities: Uranium

Secondary Commodities: Cerium, Neodymium, Rare Earth Elements, Thorium, Yttrium



Location

Township or Area: Bouck

Latitude: 46° 29' 58.56"    Longitude: -82° 35' 40.29"

UTM Zone: 17    Easting: 377649   Northing: 5150794    UTM Datum: NAD83

Resident Geologist District: Sault Ste. Marie

NTS Grid: 41J07NE

Point Location Description: No 1 shaft

Location Method: AMIS Site Visit

Access Description: No. 2 Shaft is on the west shore of Quirke Lake 2 kilometres south of the Serpent River.



Exploration History

1954-56: Denison Mines Ltd. - property acquisition, diamond drilling 1956-1992: Denison Mines Limited - mine in production


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
BOUCK 0031 41J07NE0045 41J07NE0045

Geology

Province: Southern

Subprovince: Cobalt Basin

Supergroup: Huronian Supergroup

Geological Age: Paleoproterozoic  



Geology Comments

Dec 07, 2005 (M Hailstone) - The deposit is hosted within north west trending paleochannels of uraniferous pyritic quartz pebble conglomerates located in a basal memberof the Matinenda formation.


Dec 07, 2005 (P Beach) - The main orebody (Denison Reef) occurs from 0 to 180 feet above the Early Precambrian basement and 210 to 230 feet below an argillite layer. It is a tabular-shaped mass covering a projected surface area of 8000 feet by 14,000 feet. The ore zone averages 16.7 feet thick and strikes S65E with an average dip of 19 S. The ore zone is composed of two layers known as the A and B Zones. They average 8 feet in thickness. The average depth of the ore zone is 1000 feet at the north end and 3000 feet at the south end. The C Zone above the A and B averages 6 by 100 feet in size. The D and E Zones are conglomerate beds 50 and 70 feet below the argillite. The ore-bearing conglomerate is a uranium-bearing oliogomicitic quartz-pebble conglomerate. Economic Features: From 1961 to 1980, production from the Denison Mine was 34,376,100 tons of ore, from which 41,297 tons U308 were recovered for an average grade of 0.12 percent U308.




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Conglomerate 1 Quartz Pebble Host
Quartz Arenite 2 Adjacent

Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1BranneriteEconomicOre
2MonaziteEconomicOre
3UraniniteEconomicOre
4UranothoriteEconomicOre
5PyriteEconomicGangue
6RutileEconomicGangue
7ZirconEconomicGangue

Mineral Record Details

Reserves or Resources Data
Zone Year Category Tonnes Reference Comments Commodities
Denison Mine 2007 Unclassified 80500000 NI-43-101 Technical Report on the Elliot Lake Property, Elliot Lake District, Ontario, Canada Prepared for Denison Mines Undeveloped historical resources of 80.5 million tons @ 1.13 lb/ton U3O8 Uranium 1.13 Pounds per Ton
Production Data
Year Tonnes Commodities Reference Comment
1992 62958620 Uranium 41297 Tons
The tonnage includes the amalgamation of the Stanrock and Can-Met mines. Production 1957-1992.

References

Mono - Uranium and thorium deposits of northern Ontario

Publication Number: MDC009 Page: 42-43  Date: 1968

Author: Robertson J.A.

Publisher Name: Ontario Dept. of Mines

Location:


Mono - Uranium and thorium deposits of northern Ontario

Publication Number: MDC025 Page: 12-13  Date: 1984

Author: Robertson J.A., Gould K.L.

Publisher Name: Ontario Geological Survey

Location:


Article - Sault Ste. Marie Resident Geologist area, Northeastern Region

Publication Number: MP122.008 Page: 209  Date: 1997

Author: Bennett G., Leahy E.J., Booth K.D.

Publisher Name: Ontario Geological Survey

Location:


Article - 1982 report of the Sault Ste. Marie Resident Geologist

Publication Number: MP107.008 Page: 142  Date: 1997

Author: Bennett G.

Publisher Name: Ontario Geological Survey

Location:


Compend - Report of activities, 1983, Regional and Resident Geologists

Publication Number: MP117 Page: 180  Date: 1984

Author: Kustra C.R.

Publisher Name: Ontario Geological Survey

Location:


Article - Sault Ste. Marie Resident Geologist's area, Northeastern Region

Publication Number: MP134.009 Page: 235  Date: 1997

Author: Bennett G., Leahy E.J., Donald J.P., Frey E.D., Kral J.J., Tortosa D.J.J.

Publisher Name: Ontario Geological Survey

Location:


Article - Sault Ste. Marie Resident Geologist's area - 1987

Publication Number: MP138.009 Page: 201  Date: 1997

Author: Bennett G., Leahy E.J., Melisek J.

Publisher Name: Ontario Geological Survey

Location:


Compend - Report of activities, 1989, Resident Geologists

Publication Number: MP147 Page: 205  Date: 1990

Author: Fenwick K.G., Giblin P.E., Pitts A.E.

Publisher Name: Ontario Geological Survey

Location:


Compend - Report of activities, 1990, Resident Geologists

Publication Number: MP152 Page: 203  Date: 1991

Author: Fenwick K.G., Newsome J.W., Pitts A.E.

Publisher Name: Ontario Geological Survey

Location:


Compend - Report of activities, 1991, Resident Geologists

Publication Number: MP158 Page: 215  Date: 1992

Author: Fenwick K.G., Newsome J.W., Pitts A.E.

Publisher Name: Ontario Geological Survey

Location:


Compend - Report of Activities 1992, Resident Geologists

Publication Number: MP161 Page: 207  Date: 1993

Author: Fenwick K.G., Pitts A.E., Newsome J.W.

Publisher Name: Ontario Geological Survey

Location:


MonoMap - Geology of Township 149 and Township 150, District of Algoma

Publication Number: R057 Page: 107-110  Date: 1968

Author: Robertson J.A.

Publisher Name: Ontario Dept. of Mines

Location:


Map - Sault Ste. Marie-Elliot Lake sheet, geological compilation series, Algoma, Manitoulin and Sudbury districts

Publication Number: M2108 Date: 1967

Author: Giblin P.E., Leahy E.J.

Publisher Name: Ontario Dept. of Mines

Location:


Map - Township 150, Algoma District

Publication Number: M2114 Scale: 1:15,840    Date: 1967

Author: Abraham E.M., Robertson J.A.

Publisher Name: Ontario Dept. of Mines

Location:


Map - Sault Ste. Marie-Elliot Lake, geological compilation series, Algoma, Manitoulin and Sudbury districts

Publication Number: M2419 Scale: 1:253,440    Date: 1979

Author: Giblin P.E., Leahy E.J.

Publisher Name: Ontario Geological Survey

Location:


Map - Township 150 [Bouck Township], District of Algoma

Publication Number: P0192 Scale: 1:15,840    Date: 1997

Author: Robertson J.A., Abraham E.M.

Publisher Name: Ontario Dept. of Mines

Location:


Publication - Technical Report on the Elliot Lake Property, Prepared for Denison Mines Corp.

Publication Number: NI 43-101 Date: 2007

Author: Cochrane, Lawerence, Hwozdyk, Leo

Publisher Name:

Location: SSM RGO


Map - Geological compilation series, Blind River-Elliot Lake sheet, districts of Algoma and Sudbury

Publication Number: P0304 Scale: 1:126,720    Date: 1997

Author: Giblin P.E., Leahy E.J., Robertson J.A.

Publisher Name: Ontario Geological Survey

Location:


Publication - Technical Report on the Elliot Lake Property, Prepared for Denison Mines Corp. 94p.

Publication Number: NI 43-101 rpt Date: 2007

Author: L.B. Cochrane and L. R. Hwozdyk

Publisher Name:

Location: SSM RGO


Article - Sault Ste. Marie Resident Geologist's District - 1988

Publication Number: MP142.011 Page: 207  Date: 1997

Author: Bennett G., Leahy E.J., Melisek J., Born P., Hatfield K.

Publisher Name: Ontario Geological Survey

Location:


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For detailed information regarding this mineral record please contact the Sault Ste. Marie Resident Geologist District Office