Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI000000001946

Record: MDI000000001946

General

Commodities

Primary Commodities: Copper, Nickel, Palladium, Platinum

Secondary Commodities: Gold, Cobalt

Location

Township or Area: Redhorse Lake Area

Latitude: 48° 24' 46.14"    Longitude: -92° 20' 12.85"

UTM Zone: 15    Easting: 549068   Northing: 5362397.01    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 52C08NW

Point Location Description: Assessment report 20000002182

Location Method: Based on Assessment

Access Description: Access is gained from HWY 11 down the Flander/Lac la Croix road to kilometre 65 near Redhorse Lake. From the access road a two kilometre boat ride to the west is required to access the property via Vie Lake and Redhorse River..

Exploration History

1956: Some staking was carried out in the general area and grab samples collected. 1958: Noranda carried out prospecting in the general area for copper and nickel mineralization but did not stake any claims. 1961: The government flew an airborne magnetic survey outlining a magnetic anomaly coincident with the known copper-nickel showing and several other similar anomalies in the general area. 1980-91: In the early 1980s the Geological Survey of Canada carried out a lake sediment survey which indicated strong copper-nickel-cobalt-gold-silver in the areas related to magnetic highs. They did not publish their results till 1991. 1986: Bill Ross and Ray Pitkanen sampled the showing. 1986: St. Joe Canada Inc. visited the property and collected grab samples. 1987-88: Ashton Operations Inc. carried out an integrated exploration program which included: geological mapping, trenching and geophysical surveying around the main showing. This was followed by linecutting and a ground magnetic/VLF-EM survey. A major magnetic anomaly outlined under the lake was drill tested by five drill holes totalling 602 m. 1997-99: Murgor Resources Inc conducted a small program of grid re-cutting, prospecting, sampling and mineralogical studies. 2005: William Hood staked the immediate area of the Marr Lake and conducted geological mapping, rock sampling and soil sampling over the Marr Lake Cu-Ni-PGE showing and adjacent prospective areas. 2014-15: Prospectors A. Onchulenko, B. Kuzmich, and P. Gehrels staked the property and conducted prospecting and sampling. 2022: Conquest Resources Ltd. optioned the property, conducted a heliborne magnetic survey, and carried out sampling.

Assessment Work on File

Geology

Province: Superior

Subprovince: Quetico

Geological Age: Archean  

Geology Comments

Jul 06, 2016 (Andrew Tims) - A gabbro/pyroxenite intrusive hosted in a package of amphibolite grade metamorphosed sediments.

Lithology

Mineralization

Mineralization Comments

Jul 06, 2016 (Andrew Tims) - The total sulphide content is 5-7 percent and the sulphide minerals are two-thirds pyrite and one-third chalcopyrite with only minor pyrrhotite and pentlandite. There is a strong sulphide-olivine relationship indicating that the ragged outlined (finer-grained than normal cumulus) sulphides are a result of the remobilized of copper when the olivine was serpentinized, probably replacing magnetite

Aug 27, 2019 (Therese Pettigrew) - Samples collected by prospectors in 1986 from a rusty, malachite stained showing hosted in a coarse-grained magnetic gabbro-pyroxenite ran 1200 ppb Pt, 790 Pd and 490 Au. The sheared and fractured zone was reported to be 55 metres wide. Samples collected by St. Joe Canada in 1986 returned up to 1079 ppb Au, 422 ppb Pt and 472 ppb Pd from the main showing. Grab sample AE-Marr-5 collected in 1999 returned assays of 1.235 g/t Pd, 1.251 g/t Pt, and 458 ppb Au. Sample ML-97-8 returned 2.11 g/t Pd and 1.14 g/t Pt (Assessment report 52C08NW2002). Three grab samples collected in 2005 returned assays up to 1.32% Cu, 0.269% Ni, 226 ppm Co, 7 g/t Ag, 1.3 g/t Pt, 1.65 g/t Pd and 0.495 g/t Au from a medium-grained pyroxenite with 2-3% fine-grained pyrite and chalcopyrite (Assessment report 20000002182). Samples collected in 2022 from the Marr Lake Intrusive were pyroxenite in composition and contained trace to 3% interstitial sulphides consisting of pyrite, chalcopyrite, and pyrrhotite. Sample 862411 returned 1220 ppb Pd, 1040 ppb Pt, 248 ppb Au, 5950 ppm Cu, and 2050 ppm Ni (Conquest Resources press release Jan 18, 2023).

Assay Samples

Mineral Record Details

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