Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52B14NW00017

Record: MDI52B14NW00017

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Silver

Location

Township or Area: Ramsay Wright

Latitude: 48° 52' 21.55"    Longitude: -91° 16' 1.6"

UTM Zone: 15    Easting: 627068   Northing: 5414747    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 52B14NW, 52B14SW

Point Location Description: Old underground workings, AMIS Location

Location Method: Conversion from MDI

Access Description: The Roy Mine is about 2.4 km northeast of the Sunbeam Mine, from which an old winter road runs. The Roy Mine is approximately 29.5 km east-northeast of Atikokan. Access is via the Premier Lake road, 13.3 km from Sapawe. The Roy Mine may also be reached by an old road 4 km in length from the west bank of the Seine River.

Exploration History

1898: Roy Mining and Development Company sunk an inclined shaft to 24.7m and test pits were sunk 5.5 m, northeast of the shaft and 3 m southwest of the shaft. 1899: The shaft was deepened to 32m in depth, with a dip of 50 to 60 degrees north. 1900-1978: The property changed hands and was staked many times. 1980-1983: Nahanni Mines Ltd. conducted geological mapping, geophysical surveys, sampling and diamond drilling (3 DDH). 1990: Ovalbay Geological Services staked the property and conducted linecutting and magnetometer and VLF-EM geophysical surveys. 2009: Property optioned by TerraX Minerals who conducted prospecting and sampling. 2010-2011: TerraX Minerals conducted geological mapping, sampling, and soil geochemistry and drilled 2 DDH totalling 227 m. 2018-2021: Nuinsco Resources Ltd. completed ground geophysical surveys (IP, MAG).

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Terrane: Marmion

Geological Age: Archean  

Lithology

Lithology Comments

Nov 27, 2015 (Therese Pettigrew) - The country rocks consist of trondhjemite gneisses of the Marmion Lake Batholith, intruded by dykes or sheets of massive trondhjemite. The massive granitic rocks display evidence of intense shearing and carbonatization, as well as sericitization and saussuritization. A lineament is observed trending northeast from Reserve Island continuing through to the Roy Occurrence area. The lineament is represented by shear zones on the property which strike 40 degrees to 60 degrees and dips from 50 degrees to 65 degrees NW. The quartz-carbonate veins are commonly associated with the altered massive trondhjemite (chlorite-carbonate-sericite schist) (Schnieders and Dutka, 1985).

Mineralization

Mineralization Comments

Nov 27, 2015 (Therese Pettigrew) - Schnieders and Dutka (1985) observed a shear zone up to 15 to 20 metres in width trending northeast and extending from the Sunbeam Mine, to the vicinity of the Roy Occurrence. A quartz vein up to 3 metres wide was exposed by one shaft and traced in several pits and trenches. The quartz vein appeared generally barren of sulphides with a weak crack-seal or laminated texture. Samples contained minor amounts of pyrite, galena, ankerite, green mica, hematite, sericite and chlorite. The massive trondhjemite, apple green in color, is a product of saussuritization and sericitization. The altered trondhjemite appears enriched in pyrite mineralization (Schnieders and Dutka, 1985). During their 2009 prospecting program, TerraX collected a sample from the Roy lineament that assayed 2.70 g/t Au. The two holes drilled by TerraX in 2011 at the Roy Zone both hit the same 12 to 14 m wide zone of moderately sericitized and chloritized tonalite, with thin mafic dykes and quartz plus/minus ankerite veins up to 50 cm across. The veins locally contain pyrite, galena, and fine-grained visible gold. In hole SP11-12, this zone ran 14.70 m @ 666 ppb Au, and in hole SP-11-13, the zone assayed 12.28 m @ 429 ppb Au, with a core of 3.78 m @ 1.05 g/t Au (AFRI 20000006911).

Mineral Record Details

References

Map - Geological series, Sapawe Lake area, east part, Rainy River District

Publication Number: P2388 Scale: 1:15,840    Date: 1981

Author: McIlwaine W.H., Larsen C.R.

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: 420-424  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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Ministry Contact Information

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