Mineral Deposit Inventory for Ontario

Ministry of Energy, Northern Development and Mines

Deposit: MDI52E11NE00005

General

Commodities

Primary Commodities: gold

Location

Township or Area: Snowshoe Bay Area

Latitude: 49° 37' 55.77"    Longitude: -95° 0' 7.29"

UTM Zone: 15    Easting: 355434   Northing: 5499658    UTM Datum: NAD83

Resident Geologist District: Kenora

NTS Grid: 52E11NE

Point Location Description: Precise

Location Method: conversion from mdi

Source Map: OGS 1982, MAP 2422 BAG BAY

Sources Map Scale: 1:25 000

Access Description: Island MH 71 is near the north part of Shoal Lake, about 3.5 km west-northwest of Clytie Bay Landing. It is accessible by boat from Clytie Bay.

Exploration and Mining History

1898: Trenching and shaft sinking by persons unknown. No assessment reports were found over the area.

Geology

Province: Superior

Subprovince: Wabigoon

Geological Age: Archean   

Geology Comments

05/15/2020 (T Pettigrew) - The volcanic stratigraphy in the Shoal Lake area strikes northeast and has been subdivided into a lower mafic assemblage, a lower felsic assemblage and an upper mafic assemblage (Davies, 1978). In the northern part of Shoal Lake, the volcanics face northwest, although the felsic volcanics have been strongly sheared and there is some evidence for folding within them. The lower part of the upper mafic assemblage includes medium-grained sills or thick flows and in this respect resembles the lower mafic assemblage, but it also includes more pillow breccia and some interlayered intermediate volcanics and sediments (Davies and Smith, 1988).

Mineral Deposit Lithology

Mineralization

Mineralization Comments

05/15/2020 (T Pettigrew) - On Island MH 71, approximately 400 m above the base of the upper volcanic assemblage, sheared basalt lies to the northwest of a mafic sill. The basalt contains irregular veins and veinlets of quartz, which are in part oblique to the northeast-striking foliation. Locally there is abundant carbonate and up to 10% pyrite. The coarser rock contains much fine pyrrhotite near the northwest shore of the island. A cherty dyke containing minor pyrite occurs along the north-central shore; nearby are several pits and trenches and a shaft (Davies, 1978). A shaft was sunk to an estimated depth of 9 m on one vein, which is 30 to 40 cm wide, strikes 020 degrees and dips 75 E. The vein is sugary, white, and contains <1% pyrite; it also crops out in trenches 10 m and 20 m to the southwest of the shaft. Some 30 m to the east-northeast, another trench exposes a second quartz vein about 15 cm wide. A chip sample, taken in this study across 35 cm of the quartz vein in the shaft, contained 270 ppm gold (Davies and Smith, 1988).

References

Publication - Gold Deposits of the Kenora-Fort Frances Area, p. 22

Publication Number: MDC016    Date: 1976

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

Publisher Name: OGS

Publication - Geology of the Shoal Lake-Western Peninsula Area, p. 64-65, 85-86

Publication Number: OFR5242    Date: 1978

Author: Davies, J.C.

Publisher Name: OGS

Publication - The Geological Setting of Gold Occurrences in the Lake of the Woods Area, p. 178-179

Publication Number: OFR5695    Date: 1988

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

Publisher Name: OGS

Report an Error

We are continuously updating the Mineral Deposit Inventory. 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 deposit please contact the Kenora Resident Geologist District Office