Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52E09SE00034

Record: MDI52E09SE00034

General

Commodities

Primary Commodities: Gold, Copper

Secondary Commodities: Silver

Location

Township or Area: Code

Latitude: 49° 36' 47.57"    Longitude: -94° 9' 52.9"

UTM Zone: 15    Easting: 415863   Northing: 5496279    UTM Datum: NAD83

Resident Geologist District: Kenora

NTS Grid: 52E09SE

Point Location Description: Shaft location from AMIS

Location Method: Data Compilation

Access Description: The main workings are about 1 km north of the western end of Gibi Lake and about 0.6 km west of Riley Lake. The western end of Gibi Lake is accessible by a dirt road which leads south from the Witch Bay Road at a point 5 km from Highway 71. A Trail leads 800 m north from Gibi Lake to the workings.

Exploration History

1897-1900: Triggs Gold Mining Co. sank two shafts and several test pits and trenches. The main shaft, on claim McA 129, was sunk 68.6 m, with 9 m of drifting on the 12 m level, 122 m of lateral work on the 33 m level, and 42 m of lateral work on the 63 m level. An adit was driven about 4 m to intersect No. 2 Vein at about 12 m. A vertical shaft (the Air Shaft) was sunk 18.6 m, at a point about 74 m WSW of the main shaft. Some 100 tons of ore were shipped to the Keewaitn Reduction Works. 1900: Mine closed on July 14 due to lack of capital. 1950: Rexora Mining Corporation Ltd. conducted geological mapping, trenching, and sampling. 1961: Macassa Mines Ltd. conducted trenching and drilled 3 DDH totalling 170 m. 1972-3: Dome Exploration Canada Ltd. conducted airborne and ground magnetometer and EM surveys. 1985: Mistango Consolidated Resources conducted geological mapping, ground mag and EM surveys, and airborne mag and VLF surveys. 1999: R.P. Etherington conducted geological mapping, prospecting, trenching, and sampling. 2010: Nuinsco Resources Ltd. conducted ground magnetometer and VLF-EM surveys, geological mapping, stripping, channel sampling, and drilled 12 DDH totalling 1164 m.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Geological Age: Archean  

Lithology

Mineralization

Mineralization Comments

Jan 18, 2018 (Therese Pettigrew) - There are two veins or shear zones 150 feet apart. Assays have returned values of over 1.0 opt Au. A bulk sample taken from the shaft in 1950 ran 0.5 opt Au, 1.5 opt Ag and 4% Cu (Beard and Garratt, 1984). The No. 1 and No. 2 veins occur near the top of the south and north slopes of an ENE hill, respectively. The No. 1 Vein is best exposed in the main shaft, where it consists of a vertical, 1-1.5 m wide shear zone in which there is a 20-60 cm wide quartz vein. The quartz and enclosing schists are rusty. The quartz is well mineralized in places with pyrite, pyrrhotite and chalcopyrite. A second shaft, known as the Air Shaft, lies 74 m WSW of the main shaft and reached a depth of 18.6 m. It is unlikely that there is any underground connection between the shafts as trenches and pits in the vicinity of the Air Shaft suggest that the vein here trends about 070 degrees. However, the drift at the 12 m level in the main shaft trends 050 degrees. No. 2 Vein is reported to have been traced up to 800 m. It consists of a quartz-bearing zone, exposed near the hill top in a pit, a deep trench and a short adit. The strike of the vein is about 055 degrees and the dip is steep to the north. The vein is irregular and up to 20 cm wide in both the adit and the pit above the adit. The shear zone varies in width from 75 cm in the adit to 3 m in the trench 22 m to the SW. Pyrite, chalcopyrite and pyrrhotite occur in both the quartz and the enclosing schists (Davies and Smith, 1988). Sample 1-99, collected by R.P. Etherington in 1999, returned assays of 1820 ppb Au and 807 ppm Cu (AFRI 52E09SE2002). Samples collected in the shaft area during the 2010 program returned assays ranging from 0.05-107.85 gpt Au and 113-9230 ppm Cu (AFRI 20000006593).

Mineral Record Details

References

Mono - The geological setting of gold occurrences in the Lake of the Woods area

Publication Number: OFR5695 Scale:     Date: 1988

Author: Davies J.C., Smith P.M.

Publisher Name: Ontario Geological Survey

Location:

Mono - Gold deposits of the Kenora-Fort Frances area, districts of Kenora and Rainy River

Publication Number: MDC016 Scale:     Date: 1976

Author: Beard R.C., Garratt G.L.

Publisher Name: Ontario Division of Mines

Location:

Part - Mines of northwestern Ontario

Publication Number: ARV08-01.004 Scale:     Date: 1998

Author: Bow J.A.

Publisher Name: Ontario Bureau of Mines

Location:

Part - Mines of northwest Ontario, parts 1 and 2

Publication Number: ARV10.004 Scale:     Date: 1998

Author: Bow J.A., Carter W.E.H.

Publisher Name: Ontario Bureau of Mines

Location:

Mono - Gold deposits of Ontario, part 1, districts of Algoma, Cochrane, Kenora, Rainy River, and Thunder Bay

Publication Number: MDC013 Scale:     Date: 1971

Author: Ferguson S.A., Groen H.A., Haynes R.

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:

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 Scale:     Date: 1981

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

Publisher Name: Ontario Geological Survey

Location:

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For detailed information regarding this mineral record please contact the Kenora Resident Geologist District Office