Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52F06SE00002

Record: MDI52F06SE00002

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Barker Bay Area

Latitude: 49° 17' 2.52"    Longitude: -93° 3' 53.91"

UTM Zone: 15    Easting: 495274.734   Northing: 5459033.36    UTM Datum: NAD83

Resident Geologist District: Kenora

NTS Grid: 52F06SE

Point Location Description: Precise

Location Method: Conversion from MDI

Access Description: The Barker Brothers mine is located 57 km south south-west of Dryden. The shaft is situated west of Barker Bay of Lower Manitou Lake. The property may be accessed via a lumber road commencing from Moose Point Lodge on the west shore of Barker Bay. The road crosses the mine dump at a point 1.5 km from Barker Bay. The occurrence consists of one shaft, two exploration pits and numerous trenches. trenches and pits were recorded by the author. Other trenches and pits in the general vicinity which exposed quartz vein material, might indicate parallel or conjugate shear zones in the area. (OFR 5731, p. 34)

Exploration History

1898-1899: The Barker brothers sunk a shaft to a depth of 62 feet, with some considerable drifting (Bow 1900). The vein, which is 4 feet wide at the shaft, produced ore having a mill run of 0.89 ounce of gold per ton (Gold Magazine, June 1936). Production statistics (Arnoldi 1950) specified that the mine produced 29 ounces of gold, valued at $490, from 70 tons of ore milled (0.41 ounce of gold per ton). However, the Manitoba Free Press (1899) indicated that 23.6 ounces of gold, valued at $400 was obtained from the first 8 tons of ore milled. 1899: The mine was sold to Mr. N.F. Hugo of Duluth (Rat Portage Miner, June 15, 1899). 1983-1984:Teck Exploration carried out ground VLF electromagnetic and magnetic surveys over a large area around the patented claim (Assessment Files, Resident Geologist's Office, Kenora). 1984: Lacana Mining Corporation conducted a geological survey on one claim adjacent to the patented claim on which The Barker Brothers mine is situated (Assessment Files, Resident Geologist's Office, Kenora). 1987-1989: Black Cliff Mines conducted a magnetic survey following geological mapping. A grab sample of quartz vein material taken from the muck pile at the Barker Brothers mine assayed 24,540 ppb (Assessment Files, Resident Geologist's Office, Kenora). 1989: Alex Glatz staked the four claims dropped by Black Cliff Mines to the north of the patented ground on which the mine is situated.

Geology

Province: Superior

Subprovince: Wabigoon

Terrane: Western Wabigoon

Belt: Eagle-Wabigoon-Manitou

Geological Age: Precambrian  

Lithology

Mineralization

Mineralization Comments

Mar 18, 2022 (Q Unknown) - The Barker Brothers mine is underlain by fine grained mafic metavolcanic flows and minor felsic tuffs. Rock exposure is very poor in the vicinity of the mine. The shear zone, where exposed, varies from 10 to 40 cm wide, and consists of hornblende-plagioclase schist injected by quartz veins and veinlets that pinch and swell. Because most of the trenches and pits are filled with overburden and water, very few structural measurements could be taken. However, because the numerous trenches and pits are closely spaced, they serve as a guide to the shear orientation. The shear generally strikes at 170°, but varies between 160° and 180°, and dips 87° to the west. The shear has been traced by previous workers over a minimum length of 375 m to the north of the shaft. Slickenside lineation plunges 46 0 to the south southeast, suggesting an oblique slip shear. Strike of schistosity at 150°, dipping 85° to the west, within the shear zone, suggests a dextral component of movement for the oblique-slip shear. The quartz vein material is semi-translucent to opaque and commonly sugary in texture. The vein is white to dark grey, with limonitic staining. The fine grained mineralization in the vein consists of 1% combined pyrrhotite and pyrite and traces of chalcopyrite. The vein commonly contains hornblende laminae, which also contain up to 1%, pyrrhotite. The hornblende plagioclase schist of the wall rock also contains up to 1% combined pyrrhotite and pyrite. Gold is associated with the hornblende-plagioclase schist, and more rarely with the quartz vein material. Two grab samples from the hornblende-plagioclase schist assayed 0.843 and 1.013 ounce gold per ton. These results are surprising because of lack of sulphides and alteration in the sheared rock. The best assay from 14 grab samples of the quartz vein was 0.694 ounce gold per ton; the second best assay was 0.032 ounce gold per ton over a 40 cm width; other samples were in the tens of ppm to nil range. (OFR 5731, p. 34-39)

Mineral Record Details

References

Part - Mines of northwestern Ontario

Publication Number: ARV09.003 Scale:     Date: 1998

Author: Bow J.A.

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 - 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:

Mono - Property visits by the Dryden area mineral commodity geologist, 1989

Publication Number: OFR5731 Scale:     Date: 1990

Author: Delisle P.C.

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