Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41N02NE00002

Record: MDI41N02NE00002

General

Commodities

Primary Commodities: Uranium

Location

Township or Area: Peever

Latitude: 47° 13' 57"    Longitude: -84° 36' 9.27"

UTM Zone: 16    Easting: 681469.292   Northing: 5233789.338    UTM Datum: NAD83

Resident Geologist District: Sault Ste. Marie

NTS Grid: 41N02NE

Point Location Description: Adit

Location Method: Conversion from MDI

Access Description: 200 metres south of Highway 17, 650 metres east of the west boundary of Peever Township.

Exploration History

1948: Discovered by Roy Ranson and transferred to Ranwick Uranium Mines Ltd. 1949-50: Stripping, trenching, 1044 foot adit with two 70 foot cross-cuts (one of these 120 feet below showing) and 5 short crosscuts. 1951: Underground drilling. 1961 Leased by Roy Ranson and operated for a number of years as a tourist attraction.

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Geological Age: Early Precambrian  

Geology Comments

Dec 07, 2005 (G Bennett) - Northwest trending Keweenawan diabase dike cuts Archean granitic complex. Visible pitchblende with calcite-hematite-galena-chalcocite found in veinlets in breccia zones parallel to the dike contact. There are also some radioactive cross-fractures. Ten zones of radioactivity seperated by barren zones were found. The Ra zones total 302 feet. Bulk back samples of 279 375 tons graded 0.0319% U3O8. The area is underlain by Algoman (?) granite, 'granite' gneiss, and minor syenite, which are cut by Lower Keweenawan diabase dikes. The dikes are numerous and may make up as much as 5% of the rock. The dikes range in width from less than a foot to 600 feet. The longest dikes strike west to northwest and dip steeply to the north. Some of these have been traced for over two miles. Other dikes strike northeast and dip vertically or steeply to the southeast, while a few strike north. The Ranwick Uranium Mine is situated on the Ranson dike, which is about two miles long and the average width is 70 feet.

Dec 07, 2005 (P Beach) - Pitchblende in fractures in Keweenawan diabase dike which cuts granite complex.

Mineralization

Mineral Record Details

Site Visit Information

Date: Aug 18, 1999

Geologist: G Bennett

Notes: The main ranwick showing consisted of two fractures across a 200 ft. wide diabase dike. These fractures about 20 feet apart on surface dipped towards one another at approximately 60 degrees and 45 degrees and as they were not quite parallel formed in plan a wedge extending into the diabase for about 60 feet, the two fractures faces meeting about 15 feet below the surface. The whole intervening area was intensely fractured and filled with soft red hematite stringers and patches of yellow carnotite and gummite. Some fine specimens of pitchblende up to 1 inch thick were cobbed out of here.

References

Map - Montreal River area, District of Algoma, Ontario

Publication Number: M1955-01 Scale: 1:31,680    Date: 1997

Author: Nuffield E.W.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Geological series, Precambrian geology, Batchawana synoptic project, Mamainse Point-Pancake Bay sheet, District of Algoma

Publication Number: P3062 Scale: 1:50,000    Date: 1987

Author: Grunsky E.C.

Publisher Name: Ontario Geological Survey

Location:

Part - Geology of the Montreal River area

Publication Number: ARV64-03 Page: 25-26  Date: 1997

Author: Nuffield E.W.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Geological compilation series, Batchawana sheet, districts of Algoma and Sudbury, Sault Ste. Marie Mining Division

Publication Number: P0302 Scale: 1:126,720    Date: 1997

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

Publisher Name: Ontario Geological Survey

Location:

Mono - Uranium and thorium deposits of northern Ontario

Publication Number: MDC009 Page: 17  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:

Mono - Uranium and thorium deposits of northern Ontario

Publication Number: MDC025 Page: 39  Date: 1984

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

Publisher Name: Ontario Geological Survey

Location:

Book - Northern Miner July 14, 1966

Publication Number: NMiner Date: 1966

Author:

Publisher Name:

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:

Book - Canadian deposits of uranium and thorium, Economic Geology Series 16

Publication Number: GSC EconGeol 16 Page: 132  Date: 1952

Author: Lang, A.H.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/102450

Publication - Sudbury Timmins Algoma Mineral Program, Project 1: mineral inventory of the Sudbury-Timmins-Sault Ste. Marie region, Ontario

Publication Number: GSC OF 1087 Page: 144  Date: 1985

Author: Rose, D.G.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/129999

Book - CANADIAN MINERALOGIST 1965 VOL 8 PART 2 P 149-158

Publication Number: CM Vol 8 Date: 1965

Author: Mandarino, J.A.

Publisher Name:

Location:

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