Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41N07SE00010

Record: MDI41N07SE00010

General

Commodities

Primary Commodities: Uranium

Location

Township or Area: Labonte

Latitude: 47° 21' 59.49"    Longitude: -84° 31' 19.19"

UTM Zone: 16    Easting: 687094.735   Northing: 5248873.422    UTM Datum: NAD83

Resident Geologist District: Sault Ste. Marie

NTS Grid: 41N07SE

Point Location Description: Precise

Location Method: Conversion from MDI

Access Description: 3.75 kilometres south of the north boundary of Labonte Township, 6.9 kilometres east of the west township boundary.

Exploration History

1949: Prospecting, geol. survey and reconnaissance geiger-counter survey and sampling by Napray Mining Co. Ltd.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (P Beach) - Radioactivity in thin fractures in Keweenawan diabase dike which is 100 feet wide, cutting Early Precambrian granitic gneiss and pegmatite. There are two showings. The Cranston showing consists of radioactive fractures striking N40W. The Discovery showing consists of a fracture zone striking N35W and dipping 75E. Two surface samples from the Discovery showing assayed 0.03 % U3O8. Two samples from the Cranston showing assayed 0.17 % U3O8. (OGS 1983 MDC 25 P 35).

Mineralization

Mineral Record Details

Site Visit Information

Date: Sep 07, 1999

Geologist: G Bennett

Notes: The Cranston Showing is on claim 16293, at a point 1900 feet south of the railroad where picket line D crosses a large creek. The outcrop is in the creek-bed. This showing consists of a diabase dyke at least eightyfive feet wide. The dyke is not completely exposed in the creek-bed nor can the contacts with the host rock be seen. The dyke material is medium grained. It is cut by narrow fractures with N 40 W strike and vertical dip. Associated with this fracturing is some epidote and hematite. In places the dyke rock is oxidized. One such place in the creek bed, was quite radioactive under the geiger counter. It is probable that the radioactivity here is due to pitchblende, although none was found in the oxidized material. The Discovery Showing is also on claim 16293 at a point 300 feet N35W from a footage 800 measured from the railroad on picket line B. The Discovery showing is an incompletely exposed fracture zone in a diabase dyke. The dyke is approzimately one hundred feet wide and much of its width is obscurred by a falls and the creek-bed. The dyke strikes N 65 W and the hanging wall appears to dip at 40 degrees to the NE. The dyke contact zones are poorly exposed. The hanging wall contact is much brecciated.

References

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

Publication Number: GSC EconGeol 16 Page: 131  Date: 1952

Author: Lang, A.H.

Publisher Name: Geological Survey of Canada

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

Mono - Uranium and thorium deposits of northern Ontario

Publication Number: MDC009 Page: 19  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: 35  Date: 1984

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

Publisher Name: Ontario Geological Survey

Location:

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: 147  Date: 1985

Author: Rose, D.G.

Publisher Name: Geological Survey of Canada

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

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