Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52F07SW00010

Record: MDI52F07SW00010

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Lower Manitou Lake Area

Latitude: 49° 17' 31.58"    Longitude: -92° 56' 22.57"

UTM Zone: 15    Easting: 504391.741   Northing: 5459930.355    UTM Datum: NAD83

Resident Geologist District: Kenora

NTS Grid: 52F07SW

Point Location Description: Precise

Location Method: Conversion from MDI

Access Description: The Royal Sovereign mine is located 55 km south of Dryden. The property is situated on the northwest shore of Lower Manitou Lake immediately northeast of Manitou Island. Access to the old mine is via motor boat or float plane. The mine consists of two shafts and one adit (Figure 14). (OFR 5731, p. 113-117; 1989)

Exploration History

1897-1902: Neepawa Gold Mining Co. sank an inclined shaft to a depth of 105 feet, and drifted on two levels for a total amount of 66 feet (Carter 1902). Seven quartz veins were reported at the shaft. At the first level, 65 feet deep in the shaft, an 11.5 foot quartz vein was reported to assay 0.29 to 8.40 ounces gold per ton (Bow 1898). Twenty three tons of ore were milled yielding 0.31 ounce gold per ton (ODM Statistical Files). 1902: St. Paul Syndicate optioned the property. The company sank a shaft on a second vein, 80 feet southwest of the first one. A short adit was driven from the base of the ridge to intersect the drift from Shaft #1 (Thompson 1933). 1933: A chip sample taken by Thomson (1933) of the vein in the adit assayed 0.007 ounce gold per ton over 6 feet, and a sample of similar vein material from the dump assayed 0.007 ounce gold per ton.

Geology

Province: Superior

Subprovince: Wabigoon

Terrane: Western Wabigoon

Belt: Eagle-Wabigoon-Manitou

Geological Age: Precambrian  

Lithology

Lithology Comments

Mar 17, 2022 (C Ravnaas) - The mine is underlain by mafic metavolcanic rocks of the Blanchard Lake group (Blackburn 1976, 1982). Bedrock is exposed at the adit entrance. In the dump, rock consists mainly of chlorite-carbonate schist and rarely of greywacke. Blackburn (1976) interpreted the greywacke to be intermediate tuff. The quartz vein exposed in the entrance of the adit is parallel to the shear fabric which trends 048° and dips 62° to the southeast. Kinematic indicators suggest a north-side-down, dip-slip component of movement based on flat extension tourmaline veinlets striking at 050° and dipping 10° to the southeast in the quartz vein, and on the moderate to steep lineation which plunges at 690 to the southeast (OFR 5731, p. 113-117; 1989).

Mineralization

Mineralization Comments

Feb 23, 2010 (C Ravnaas) - Neepawa Gold Mining Co. sank an inclined shaft to a depth of 105 feet, and drifted on two levels for a total amount of 66 feet (Carter 1902). Seven quartz veins were reported at the shaft. At the first level, 65 feet deep in the shaft, an 11.5 foot quartz vein was reported to assay 0.29 to 8.40 ounces gold per ton (Bow 1898). Twenty three tons of ore were milled yielding 0.31 ounce gold per ton (ODM Statistical Files). 1933: A chip sample taken by Thomson (1933) of the vein in the adit assayed 0.007 ounce gold per ton over 6 feet, and a sample of similar vein material from the dump assayed 0.007 ounce gold per ton. The shear zone has a minimum width of 20 metres. The quartz vein is generally light to dark grey, rarely white, opaque, and has a mosaic texture. The quartz veins are commonly fractured. Mineralization consists of 1%, disseminated fine to medium grained pyrite with trace chalcopyrite. Accessory minerals are tourmaline, chlorite and ankerite. Tourmaline is both disseminated and in layers. Six grab samples were taken from the dump. A sample of chlorite-carbonate schist assayed 0.061 ounce gold per ton, whereas the best assay from quartz vein material was only 0.019 ounce gold per ton. (OFR 5731, p. 113-117; 1989)

Mineral Record Details

References

Part - Geology of the Manitou-Stormy lakes area

Publication Number: ARV42-04.001 Page: 26-27  Date: 1998

Author: Thomson J.E.

Publisher Name: Ontario Dept. of Mines

Location:

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

Publication Number: MDC013 Page: 167-168  Date: 1971

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

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:

MonoMap - Geology of the Lower Manitou-Uphill lakes area, District of Kenora

Publication Number: R142 Page: 66  Date: 1976

Author: Blackburn C.E.

Publisher Name: Ontario Division of Mines

Location:

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

Publication Number: MDC016 Page: 35  Date: 1976

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

Publisher Name: Ontario Division of Mines

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 Page: 36-37  Date: 1981

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

Publisher Name: Ontario Geological Survey

Location:

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

Publication Number: OFR5731 Page: 113-117  Date: 1990

Author: Delisle P.C.

Publisher Name: Ontario Geological Survey

Location:

Report an Error

We are continuously updating our assessment file / technical report information. 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 record please contact the Kenora Resident Geologist District Office