Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42D14NW00050

Record: MDI42D14NW00050

General

Commodities

Primary Commodities: Copper, Zinc

Location

Township or Area: Pays Plat Lake Area

Latitude: 48° 57' 24.7"    Longitude: -87° 21' 56.37"

UTM Zone: 16    Easting: 473231.77   Northing: 5422724.64    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 42D14NW

Point Location Description: Shaft, diamond drill holes.

Location Method: Conversion from MDI

Access Description: The occurrence is located just east of Demijohn Lake (formerly Johnson Lake) approximately 18 km north-northwest of Schreiber, about 2.4 km south of the Zenith Mine (claim TB 9301/ES 79, claim map G-606, Pays Plat Lake). Access may be gained via the Winston Lake Mine road which extends northwards from a point on Highway 17 about 8 km west of Schreiber. The occurrence is located approximately 24 km up along this road.

Exploration History

1899: Ten mining locations comprised the Gesic property (400 acres), owned by W.A. Johnson, C. Palmer and J. Hare who formed a stock company to take over the property. J.A. Bow, Inspector of Mines, visited mining locations ES 79 (later patented claim TB 9301). Work commenced in November on a test shaft which eventually reached a depth of 7 m at an inclination of 50 to 60 degrees. 1920: T.L. Tanton of the Geological Survey of Canada examined the showings. 1935: Owned by W. DeViliers of Winnipeg and later by L.B. Norrie of New York. 1980: Owned by C. Norrie and J. McDowell. 1980: Property acquired by Falconbridge Copper Corporation (which became Minnova Inc.) as part of Winston Lake Mine group. Geological, geochemical and geophysical surveys, and diamond drilling carried out. Most of resulting data not filed for assessment credit. 1994: Metall Mining Corp. (formerly Minnova Inc.) drilled 18 DDH totalling 779 m.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Schreiber-Hemlo

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (B Nelson) - The Gesic occurrence (VMS deposit) is first described by Bow (1899, p.87): The formation is trap diabase; the vein is said to be traceable over several mining locations, with a strike of east and west. At the surface of the pit there is very little mineralization; in fact the vein appears to consist of only a sheared zone of country rock. But at the bottom of the shaft zinc blende sphalerite is making its appearance in promising quantities. Tanton (1930, p.195) adds: The rocks on the property are a complex of hornblende schists intruded by granite dyes, intimately intermingled with gneissose dioritic rocks and amphibolites. The contact between the great granite batholith of this region and the greenstone assemblage lies about 10 chains (660 feet) south of the mineralized shear zone and trends east and west.

Lithology

Mineralization

Mineralization Comments

Dec 07, 2005 (B Nelson) - Tanton (1930) noted: 'The deposit is a shear zone mineralized with pyrite. The writer saw no ore in place when examining the property in 1920.

May 17, 2019 (Therese Pettigrew) - Assays from the 1994 drill program included the following results: DDH GO-10: up to 0.26% Cu 13.60% Zn over 0.3 m, with an average of 0.23% Cu and 8.70% Zn over 1.2 m; DDH GO-11: up to 0.5% Cu, 4.0% Zn over 0.8 m; DDH GO-23: up to 0.32% Cu, 4.18% Zn over 0.3 m with an average of 0.33% Cu, 2.59% Zn over 0.7 m; DDH GO-24: up to 0.32% Cu, 18.55% Zn over 0.6 m, with an average of 0.28% Cu, 12.88% Zn over 1 m; DDH GO-28: up to 0.17% Cu, 6.67% Zn over 0.8 m with an average of 0.18% Cu, 4.44% Zn over 1.3 m (Assessment file 42D14NW0013).

Alteration Comments

Dec 07, 2005 (B Nelson) - Not known.

Mineral Record Details

References

Book - Report on the Region Lying North of Lake Superior between the Pic and Nipigon Rivers

Publication Number: GSC 1081 Date: 1909

Author: Collins, W.H.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/225805

Map - Nipigon-Schreiber, geological compilation series, Thunder Bay District

Publication Number: M2232 Scale: 1:253,440    Date: 1973

Author: Carter M.W., McIlwaine W.H., Wisbey P.A.

Publisher Name: Ontario Division of Mines

Location:

Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.

Publication Number: OFR5951 Page: 229-231  Date: 1996

Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.

Publisher Name: Ontario Geological Survey

Location:

Book - Zinc and Lead Deposits of Canada, p. 195

Publication Number: Econ Geol 8 Date: 1930

Author: Alcock, F.J.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/102442

Map - Schreiber-Duck Lake area, District of Thunder Bay

Publication Number: ARM30A Scale: 1:63,360    Date: 1998

Author: Hopkins P.E., Tanton T.L.

Publisher Name: Ontario Dept. of Mines

Location:

Part - Schreiber-Duck Lake area

Publication Number: ARV30-04.001 Page: 24  Date: 1998

Author: Hopkins P.E.

Publisher Name: Ontario Dept. of Mines

Location:

Part - Geology of the Big Duck-Aguasabon lakes area

Publication Number: ARV49-07.001 Page: 11  Date: 1998

Author: Bartley M.W.

Publisher Name: Ontario Dept. of Mines

Location:

File - Resident Geologist Mineral Deposit Files

Publication Number: Min Dep Date:

Author:

Publisher Name:

Location: Thunder Bay RGP

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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office