Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52M01SE00187

Record: MDI52M01SE00187

General

Commodities

Primary Commodities: Silver, Gold, Zinc

Location

Township or Area: Todd

Latitude: 51° 3' 12.18"    Longitude: -94° 3' 36.8"

UTM Zone: 15    Easting: 425691   Northing: 5656296    UTM Datum: NAD83

Resident Geologist District: Red Lake

NTS Grid: 52M01SE

Point Location Description: Showing with drillhole and trench on OGS map M2406

Location Method: Data Compilation

Exploration History

1934: Lake Rowan Gold Mines Limited carried out pitting, trenching, and sampling. 1945: Lake Rowan Mines Limited. 1951: Rowan Consolidated Mines Limited. 1974: Rowan Gold Mines Limited (a subsidiary of Dickenson Mines Limited). 1982: Dickenson Mines Ltd. conducted magnetometer and EM surveys. 1984: Goldquest Exploration Inc carried out prospecting, sampling, and mapping. 2001: Goldcorp drilled 3 DDH totalling 699 m. 2002: Goldcorp conducted an IP survey.

Assessment Work on File

Geology

Province: Superior

Subprovince: Uchi

Terrane: North Caribou

Domain: Uchi

Belt: Red Lake

Geological Age: Archean  

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Lithology

Lithology Comments

Dec 07, 2005 (K R Kettles) - At this locality gold occurs within a shear zone hosted by mafic volcanics. The mafic volcanics are crosscut by biotite, trondhjemite and felspar porphyry dikes. The main mineralized zone strikes slightly south of east, dips vertically and averages 2.13 m in width. The shear zone is very well mineralized, but relative proportions of the different sulphides vary along strike. To the east the zone impinges at an acute angle against a felspar porphyry dike. Beyond the dike, two shears appear.

Mineralization

Mineralization Comments

Nov 07, 2014 (K R Kettles) - Selected grab samples assayed up to 0.14 oz/ton (4.800 g/tonne) Au and 22.93 oz/ton (786.155 g/tonne) Ag. The wallrock was found to carry low gold values. Chip samples yielded 0.07 and 0.04 oz/ton (2.400 and 1.371 g/tonne) Au.

Nov 13, 2020 (Therese Pettigrew) - Widespread, disseminated, sulphide minerals occur in the metavolcanic rocks in association with east-trending shear zones. Pyrrhotite and pyrite are the dominant sulphides and are accompanied by chalcopyrite, sphalerite, galena, arsenopyrite and small amounts of gold and silver. Assays as high as 12.8% Zn, 2.48% Pb, 1.15% Cu, 0.08 ounce Au per ton and 14.3 ounce Ag per ton were reported by Rugged Red Lake Mines Ltd. from surface showings in 1952. Subsequent work has not duplicated these values, although Goldquest Exploration Ltd. obtained assay values of 0.08 ounce Au per ton and 2.44 ounce Ag per ton from surface sampling in the same area as the Rugged Red Lake discovery. During 1996, an area of rusty weathering bedrock near the former Rugged Red Lake Mines discovery site was examined and sampled. Dark green, brecciated, mafic metavolcanic rock containing up to 5% disseminated and stringer sulphides minerals was exposed. Poorly preserved pillows are present in part of the outcrop. The sulphide-bearing basalt is intruded by a feldspar porphyry dike of undetermined width that also contains small amounts of pyrite. Part of the rock exposure resembles gabbro, but a definite contact between this phase and the metavolcanic rocks is not exposed. Sulphide mineralization consists of disseminated and stringer pyrrhotite with lesser amounts of pyrite and chalcopyrite. Sulphide minerals are present in the fine-grained basalt and brecciated basalt but not in the gabbroic phase. Four samples of the sulphide-bearing rock were assayed and returned up to 1254 ppm Cu,118 ppm Ni, and 61 ppm Co (Atkinson and Storey, 1997). DDH RW-01-158 returned 1.25 g/t Au and 8 ppm Ag over 0.42 m from a flow breccia in pillowed basalt with 5% quartz-calcite stringers, 10% pyrrhotite and 5% arsenopyrite. DDH RW-01-162 returned 2.83 g/t Au over 0.72 m from a silicified mafic lapilli tuff, tuff breccia and agglomerate with 5% quartz-calcite stringers, 10% pyrrhotite, 5% pyrite, and 1% chalcopyrite; 1.73 g/t Au over 0.89 m from mafic tuff with 5% quartz-calcite stringers, 10% pyrrhotite, 5% pyrite, and 1% chalcopyrite; 1.06 g/t Au, 31 ppm Ag, 16,320 ppm Zn from a massive basalt with 20% quartz-calcite veins, 5% sphalerite, 5% arsenopyrite, 3% pyrrhotite, 2% chalcopyrite, and 2% galena. DDH RW-01-163 returned 2.42 g/t Au over 1 m from a mafic tuff breccia and agglomerate with 5% thin quartz-calcite veins, 15% pyrrhotite, 5% chalcopyrite, and 3% pyrite (Assessment report 52M01SE2010).

Nov 13, 2020 (Q Unknown) - DDH-69-5: Best: 2.90 opt Ag/3.1 ft (130.7-133.8). 1985 rock samples: low Values for Zn, Pb, Ag, Au.

Alteration Comments

Dec 07, 2005 (K R Kettles) - The shear zone contains quartz veins; silicification.

Mineral Record Details

References

File - Resident Geologist files Todd #10 (1934)

Publication Number: Date:

Author:

Publisher Name:

Location: Red Lake RGP office

Map - Todd Township, Kenora District

Publication Number: M2406 Scale: 1:12,000    Date: 1978

Author: Riley R.A.

Publisher Name: Ontario Geological Survey

Location:

Mono - Gold occurrences, prospects, and deposits of the Red Lake area, volumes 1 and 2

Publication Number: OFR5558 Page: 684-685  Date: 1987

Author: Durocher M.E., Burchell P.S., Andrews A.J.

Publisher Name: Ontario Geological Survey

Location:

Part - Geology and mineral deposits of the Red Lake area

Publication Number: ARV49-02 Page: 191-192  Date: 1998

Author: Horwood H.C.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Report of Activities 1996, Resident Geologists

Publication Number: OFR5958 Page: 3-12 to 3-15  Date: 1997

Author: Newsome J.W., Laderoute D.G.

Publisher Name: Ontario Geological Survey

Location:

Map - Geological series, Todd Township, District of Kenora (Patricia Portion)

Publication Number: P1052 Scale: 1:12,000    Date: 1975

Author: Riley R.A.

Publisher Name: Ontario Division of Mines

Location:

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