Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52B14NW00016

Record: MDI52B14NW00016

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Silver, Copper

Location

Township or Area: Ramsay Wright

Latitude: 48° 53' 27.69"    Longitude: -91° 16' 52.91"

UTM Zone: 15    Easting: 625976.91   Northing: 5416765.56    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 52B14NW

Point Location Description: Shaft

Location Method: Field Visit with GPS

Access Description: Pettigrew's Mine is located on King's Lake, approximately 29.5km northeast of Atikokan, Ontario, in the district of Rainy River. Access is via the Domtar Woodlands road approximately 15km from Sapawe. Other shaft is located at 5416593 / 625963 UTM ZN15, Nad 27.

Exploration History

1898: W.D. Pettigrew sank a shaft 3 m by 1.5 m on the dip of the vein to a depth of 7.6 m. 1899: A second shaft was sunk vertically to a depth of 32.9 m. At a depth of 30.5 m, a crosscut 1.5 m by 2.1 m in cross sections was driven southeast through to the footwall, a distance of 19.5 m. At the end of the crosscut, 4.3 m of drifting was done into the quartz vein. W. D. Pettigrew constructed a hoist house, dining and sleeping camps, office, storehouse, stables, powderhouse, blacksmith shop, baker and mill. 1890-1900 Mr. Pettigrew stopped mining operations and closed up the properties due to the distance from railroad transportation. 1940: Sylvanite Gold Mines Limited acquired an option to the Pettigrew property, conducted sampling. 1982: INCO acquired the property and conducted sampling and geological mapping, geophysical surveys (Magnetometer and Electromagnetic) 1983: INCO drilled 11 DDH totalling 742 m. 1987: INCO conduced a VLF survey, drilled 5 DDH totalling 400 m, and dewatered the shaft and conducted underground mapping and sampling. 2009: TerraX Minerals optioned the property and conducted prospecting and sampling. 2010: TerraX conducted line cutting and an IP geophysical survey, a soil geochemistry survey, geological mapping and drilled 5 holes totalling 661.5 m.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Geological Age: Archean  

Lithology

Mineralization

Mineralization Comments

Nov 30, 2015 (Therese Pettigrew) - A series of boudin-like quartz veins, up to 15m long, are hosted in highly sheared, epidotized trondhjemite. Strike of the mineralization is northeast with dips of 45 to 65 degrees to the northwest. Veins are composed of essentially white quartz with trace amounts of ankerite and pyrite. Hanging wall is a chlorite-sericite-carbonate schist with a high content of pyrite, chalcopyrite, arsenopyrite, and quartz. Small quartz veins cut the hangingwall and contain up to 10% pyrite, ankerite, chalcopyrite, and trace galena. Footwall rocks are highly altered trondhjemites consisting of epidote, sericite, chlorite, quartz, and remnant feldspar (Wilkinson, 1982). These lenticular quartz veins are hosted within a ductile shear zone, associated to a prominent northeast-trending lineament. The vein is generally massive in the centre of the lenses, but pinches out or becomes a composite vein of stringer quartz and sheared and altered trondhjemite on the margin. The chlorite and chlorite-carbonate schists which are evident along the hanging wall, represent the product of shearing and Carbonatization (Schnieders and Dutka, 1985). INCO’s 1987 sampling of the shaft and cross-cut indicated that some historical assays were not valid as the best results from a series of channel samples was 700 ppb Au over 20.5 m. Seven bulk samples (bags of broken material from the floor of the drift) were collected and had results varying from 0.45 to 4.34 g/t Au. DDH 57751 intersected 0.63 m @ 19.40 g/t Au and 1.37 m @ 15.17 g/t in separate zones 15 m apart. No other holes from the 1983 or 1987 drill programs had assays over 1 g/t (AFRI 20000006911). A grab sample collected by Wilkinson (1982) assayed 2.06 g/t Au.

Mineral Record Details

References

Mono - Feasibility of small scale gold mining in northwestern Ontario (parts of the districts of Kenora, Rainy River, and Thunder Bay), volume 1, text, volume 2, appendices

Publication Number: OFR5332 Page: 56 Table 20  Date: 1981

Author: Neilson J.N., Bray R.C.E.

Publisher Name: Ontario Geological Survey

Location:

Mono - Gold deposits of the Atikokan area

Publication Number: MDC024 Page: 24-26  Date: 1982

Author: Wilkinson S.

Publisher Name: Ontario Geological Survey

Location:

Mono - Property visits and reports of the Atikokan economic geologist, 1979-1983, Atikokan geological survey

Publication Number: OFR5539 Page: 372-376  Date: 1985

Author: Schnieders B.R., Dutka R.J.

Publisher Name: Ontario Geological Survey

Location:

Map - Precambrian Geology, Sapawe Area

Publication Number: P3350 Scale: 1:50,000    Date: 1995

Author: Stone D., Pufahl P., Carter J.

Publisher Name: Ontario Geological Survey

Location:

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