Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42C02NW00025

Record: MDI42C02NW00025

General

Commodities

Primary Commodities: Diamond

Location

Township or Area: Menzies

Latitude: 48° 10' 44.81"    Longitude: -84° 49' 57.59"

UTM Zone: 16    Easting: 661108.85   Northing: 5338479.74    UTM Datum: NAD83

Resident Geologist District: Sault Ste. Marie

NTS Grid: 42C02NW

Point Location Description: Outcrop on east side of Trans Canada Highway

Location Method: Field Visit with GPS

Access Description: Drive north along Highway 17 from the junction of highway 101 for a distance of approximately 28 km. The occurrence outcrops on the east side of the highway.

Exploration History

1995-96: Sandor Surmacz - prospecting, sampling. 1996-97: Spider Resources - sampling.

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Michipicoten

Tectonic Assemblage: Wawa

Geological Age: Neoarchean   Geochronological Age: 2750 MA   Geochron. Age Ref.: GOO VOL 1

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Geology Comments

Dec 07, 2005 (A Wilson) - The diamond occurrences appear to be restricted to a D1 recumbent nappe in the west-central portion of the Michipicoten greenstone belt. The nappe is imbricated by south-vergin reverse faults. The direction of nappe transport is from south to north and it lies immediately north and adjacent to the Kapuskasing Structural Zone. This thrusting and shortening may be related to the tectonic events along the Kapuskasing Structural Zone. The western limit of the nappe is likely the Dickenson Lake fault that passes to the west of the Dickenson Lake stock. The nappe is not likely to extend east beyond the Marsden Fault.

Lithology

Lithology Comments

Dec 07, 2005 (A Wilson) - The rock si dark grey, weathers greenish-white and contains 10-15% rounded actinolite xenoliths. Some of these xenoliths display narrow, dark reaction rims. Supracrustal xenoliths are also commonly observed in this dike. The supracrustal xenoliths are concentrated at the margins of the dike. The surrounding rock type is interpreted to be a diatreme.

Mineralization

Mineralization Comments

Dec 07, 2005 (A Wilson) - A 27.9 kg sample returned 1 microdiamond and 1 macrodiamond. A second sample weighing 157.3 kg did not return any diamonds. A 25.8 kg sample of the surrounding breccia or diatreme also returned no diamonds.

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 1       Structure Type: None

References

Book - Spider Resources Inc. Press Releases

Publication Number: Clippings Date: 1997

Author:

Publisher Name:

Location: Timmins RGP

File - Resident Geologist files WP_Lalibert-02

Publication Number: Date:

Author:

Publisher Name:

Location: SSM RGP office

Map - Manitouwadge-Wawa sheet, geological compilation series, Algoma, Cochrane, Sudbury and Thunder Bay districts

Publication Number: M2220 Scale: 1:253,440    Date: 1972

Author: Milne V.G., Giblin P.E., Bennett G., Thurston P.C., Wolfe W.J., Giguere J.F., Leahy E.J., Rupert R.J.

Publisher Name: Ontario Division of Mines

Location:

Map - Precambrian Geology Compilation Series - White River Sheet

Publication Number: M2666 Scale: 1:250,000    Date: 2001

Author: Santaguida F.

Publisher Name: Ontario Geological Survey

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 Sault Ste. Marie Resident Geologist District Office