Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42E12NW00029

Record: MDI42E12NW00029

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Silver

Location

Township or Area: McComber

Latitude: 49° 38' 4.62"    Longitude: -87° 49' 21.88"

UTM Zone: 16    Easting: 440591   Northing: 5498332    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 42E12NW

Point Location Description: Sample 1126902 from Assessment file 20000014497

Location Method: Data Compilation

Exploration History

1928: Property acquired by F. Morrison and T. Delbribdge. 1937: Stripping and trenching was completed on the Delbridge and Kondrat showings. 1948: The property was part of a group of claims held by Morrison and Delbridge. The property was sampled by Sylvanite Mines. 1980: E. Harrington and A. Hopkins conducted a magnetometer survey, mapping and sampling. 1982: J. Ternowsky and P. Skalesky acquired the property. 1983: Tenacity Mining Corp. Ltd. optioned the property from J. Kondrat and carried out mapping and sampling. 1986-1987: The property was optioned to Norben Gold Resources, who carried out geophysics, geological mapping, stripping, and sampling. 1991: The property was prospected by Gary Clark for A. Skalesky. 1992: G. Clark and A. Eveleigh were contracted by A. Skalesky to recut the claim lines and conduct prospecting, mapping, and sampling. 1994: Prospecting on Kondrat was performed by Gary Clark. 1996: A. Skalesky contracted Clark-Everleigh consulting to conduct mapping and sampling. 1998: A. Skalesky contracted Clark-Everleigh consulting to conduct trenching, mapping and sampling. 2000: A. Skalesky contracted D.G. Courtney and G. Daniels to carry out prospecting. 2003: D.R. Galley carried out prospecting and sampling for A. Skalesky. 2005: D. Skalesky and L. Lundstrom carried out prospecting, stripping, and sampling. 2008: D. Skalesky and L. Lundstrom carried out prospecting and sampling. 2016: D. Skalesky carried out prospecting and sampling.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Beardmore-Geraldton

Geological Age: Archean  

Lithology

Mineralization

Mineralization Comments

Oct 16, 2019 (B Nelson) - Sample 83-MRL-6 returned a value of 0.40 oz/ton Au from a sugary white quartz vein, exhibiting rusty weathering, in highly sheared metavolcanics. The vein grades into vitreous quartz containing patches and seams of arsenopyrite and pyrite in the range of 1-2.5% (Mason and White, 1986).

Oct 16, 2019 (Therese Pettigrew) - The Delbridge and Kondrat zones occur along the same narrow interflow sedimentary structure. Both the Delbridge and Kondrat mineralized zones consist of two parallel, lean oxide iron formations. The chert horizons within the banded sequence exhibit a sucrosic texture, appearing as almost a fine-grained quartzite. Magnetite is scarce, most commonly in very thin horizons, and at best increase to bands containing 5% magnetite over very narrow strike lengths. Gold mineralization is controlled by fracturing and quartz veining within and along the iron formations. The veins are typically of very limited lateral extent, usually never exceeding 2 metres in any one direction. Up to 8% arsenopyrite in coarse disseminations occur at the vein selvages. Assay values up to 0.92 oz. Au per ton over 1.50 metres have been obtained from arsenopyrite-bearing veins (Assessment report 42E12NE0183). The alteration and mineralization are focused on the banded lean iron formations. The carbonate alteration is present as weak ferro-dolomite within the greywacke. The alteration and mineralization within the banded lean iron formation consists of chlorite, arsenopyrite, pyrite, gold and quartz veinlets. The arsenopyrite mineralization occurs as coarse crystals in fracture (1-2 cm) (up to 60%) or as fine needles within quartz veinlets. Pyrite mineralization is present as disseminated cubes within the thin magnetite, argillite (chloritic) and chert layers. The gold mineralization located to date is associated the arsenopyrite and quartz veinlets (Assessment report 42E12NW0111). Samples taken by prospectors in 2005 returned values of 1.315 ppm, 2.036 ppm, and 9.223 ppm Au (Assessment report 20000000528). The Kondrat Property is located in the Southern Metavolcanic Belt. Prospecting samples collected in 2016 returned values from 2.309 ppm to 34.305 ppm Au (Assessment report 20000014497). Samples collected by OGS staff in 1987 returned 0.24 oz/t Au and 0.14 oz/t Ag (Carter, 1987).

Mineral Record Details

References

File - Resident Geologist Mineral Deposit Files

Publication Number: Min Dep Date: 1996

Author:

Publisher Name:

Location: Thunder Bay RGP

MonoMap - Geology of McComber and Vincent townships, District of Thunder Bay

Publication Number: OFR5648 Page: 63-64  Date: 1987

Author: Carter M.W.

Publisher Name: Ontario Geological Survey

Location:

Book - GDIF 42E12NW (unpublished)

Publication Number: GDIF Date: 1988

Author: Ontario Geological Survey

Publisher Name: Ontario Geological Survey

Location:

Mono - Gold occurrences, prospects, and deposits of the Beardmore-Geraldton area, districts of Thunder Bay and Cochrane

Publication Number: OFR5630 Page: 497-505  Date: 1986

Author: Mason J.K., White G.D.

Publisher Name: Ontario Geological Survey

Location:

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