Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41O10NW00018

Record: MDI41O10NW00018

General

Commodities

Primary Commodities: Nickel, Copper, Zinc

Secondary Commodities: Silver, Gold, Platinum, Palladium

Location

Township or Area: Tooms

Latitude: 47° 43' 2.19"    Longitude: -82° 52' 19.47"

UTM Zone: 17    Easting: 359592.71   Northing: 5286574.61    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41O10NW

Point Location Description: Recent trenching by Kennecot (Trench - blast B),

Location Method: Field Visit with GPS

Access Description: Easy access is possible via the Kormack Timber road which extends north of Highway 667 to the prospect. From the road multiple drill trails lead up to the various trenches.

Exploration History

1967: Armac Securities - Tooms Nickel Syndicate - mapping, VLF, HLEM surveys, 9 ddh. 1972: Canex Aerial Exploration - ground mag and EM surveys, mapping. 1977-79: Granges Exploration - ground geophysics, diamond drilling. 1981: Innes and Karvinen - prospecting. 1982-83: Quinterra Resources - till sampling, OVD. 1985: Canadian Nickel Company - reverse circulation drilling. 1992-93: Kennecott Canada - ground mag and HLEM surveys, mapping, prospecting, stripping, trenching, 8 ddh. 1997-99: International Kirkland Minerals Inc. - ground geophysics, 3 ddh (792 m). 2002: Canabrava Diamond Corporation – AEM, AMag, DD – 1 – 120m, Pr, Samp. 2008: Benton Resources Inc. – AEM, AMag.

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

Tectonic Assemblage: Garnet-Tooms

Geological Age: Neoarchean   Geochronological Age: 2730 +/-3 MA   Geochron. Age Ref.: OF3384E

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Geology Comments

Dec 07, 2005 (S Fumerton) - The interflow units are strongly foliated and sheared. In some cyclical intercalated sedimentary units, the grain size decreases to the north suggesting stratigraphic tops to the north. Metamorphism and recrystalization of the carbonate rich mudstone lamellae has resulted in the growth of mafic mineral ellipses aligned oblique to the bedding. The stratigraphy varies between vertical and dipping 65deg to the south.

Lithology

Lithology Comments

Dec 07, 2005 (S Fumerton) - Original Comments are more than 2000 characters. The data cannot be converted, however the data will still be available in Digitial Prospector Database.

Dec 07, 2005 (A Wilson) - The mineralization is hosted within interflow sediments in a sequence of Mg tholeiitic to komatiitic basalts. To the south, these basalts have a knobby weathered surface due to the presence of amphibole bearing aggregates. Locally an elephant skin and spinifex texture have been reported. The interflow sediments consist of a variable suite of rocks. These include altered fragmental tuffs, bedded volcanoclastics, chert horizons, and finely laminated calcareous mudstones. The sediments form laterally discontinuous lenses. (PRECIS of Fumerton).

Mineralization

Mineralization Comments

Dec 07, 2005 (S Fumerton) - In the graphitic interflow sediments within the mafic volcanics south of the main mineralized zone disseminated pyrite, chalcopyrite, and sphalerite with trace amounts of molybdenum occur. These minerals form up to 20% of the rock locally. Within the main mineralized horizon there is a zonation to the mineralization. The lower fragmental tuffs form a copper zone with disseminated pyrrhotite, pyrite and chalcopyrite which make up to 15% of the rock locally. Sulphides occur in discontinuous trails parallel to the foliation or disseminated in the rock and along fractures. The stratigraphically overlying siliceous chert horizon forms a nickel zone with coarse grained disseminated pyrrhotite, pyrite plus minor chalcopyrite and pentlandite. Pentlandite occurs primarily as exsolution lamellae but also occurs in minor amounts on slip surfaces and sulphur determinations suggest that most of the nickel occurs in sulphides.

Dec 07, 2005 (A Wilson) - Assays returned from diamond drilling completed in 1967 returned values up to 0.1% Cu and 0.85% Ni, although individual values are up to 0.7% Cu, 0.85% Ni and 0.8% Zn. Diamond drilling completed by Granges returned assays up to 0.55% Ni over 3 ft (SW 102); 0.91% Ni over 4.9 ft; 1.02% Ni over 2.9 ft (SW-62). Average grades from sampling conducted in 1992 returned values of up to 0.8% Ni and 0.6% Cu. Typical averages of the mineralized zones are 0.3% Ni, 0.15% Cu in the trenches and 0.3% Ni and0.26% Cu in drill core. Muck samples collected by the OGS in 1994 returned values of 0.01 g/t Au, 0.3 g/t Ag, 0.24% Ni, 0.08% Cu. A grab sample collected by the OGS in 1994 returned a value of 0.2 g/t Ag, 0.025 g/t Pt, 0.005 g/t Pd, 0.24% Ni and 0.084% Cu.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 1       Structure Type: Shear

Site Visit Information

Date: Jun 21, 1994

Geologist: S Fumerton

Notes: An examination was made of the occurrence. Generally rocks in the original trenches are lichen covered and difficult to study as is an old core pile at the eastern end of the trenches. However, recent trenching by Kennecott has clearly exposed a mineralized horizon. With respect to Kennecott's work is possible that the diamond drill hole TN93-02 was stepped too far back and drilled at too steep an angle to intersect the same mineralization exposed in the trenches. The 180m hole was drilled @ -75deg from a set-up 125m to the south to intersect a unit dipping between 70 and 85deg south. In this drilling all samples from mm scale banded ultramafic have a chemistry more akin to a chemical sediment 25-30% SiO2, 40-45% MgO, 0.8% P2O5, 20% LOI, and 7% CO2. Though it is difficult to second guess the rock identification it would appear that the Kennecott drilling intersected a number of interflow sediments in the basaltic sequence. Furthermore, previous drilling has indicated that more than one of these horizons are mineralized.

References

File - Resident Geologist file T-1771

Publication Number: Date:

Author:

Publisher Name:

Location: Timmins RGP office

Map - Geological series, Operation Chapleau, Opeepeesway-Rocky Island lakes sheet, districts of Algoma and Sudbury

Publication Number: P0675 Scale: 1:126,720    Date: 1997

Author: Thurston P.C., Siragusa G.M., Sage R.P.

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:

Book - Sudbury Timmins Algoma Mineral Program, Project 1: mineral inventory of the Sudbury-Timmins-Sault Ste. Marie region, Ontario

Publication Number: GSC OF 1087 Page: 89  Date: 1985

Author: Rose, D.G.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/129999

Map - Geology, Swayze greenstone belt, Sultan, Ontario

Publication Number: OF 3384E Scale: 1:50,000    Date: 1999

Author: Heather, K B; Shore, G T

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/210453

Map - Tooms and Greenlaw townships, Sudbury District

Publication Number: M2121 Scale: 1:31,680    Date: 1997

Author: Donovan J.F.

Publisher Name: Ontario Dept. of Mines

Location:

MonoMap - Geology of Halcrow-Ridout lakes area, District of Sudbury

Publication Number: R063 Date: 1968

Author: Donovan J.F.

Publisher Name: Ontario Dept. of Mines

Location:

File - Resident Geologist 1980, airphotos

Publication Number: Date: 1996

Author:

Publisher Name:

Location:

MonoMap - Geology of the Chapleau area, districts of Algoma, Sudbury, and Cochrane

Publication Number: R157 Date: 1977

Author: Thurston P.C., Siragusa G.M., Sage R.P.

Publisher Name: Ontario Division of Mines

Location:

Mono - Copper, nickel, lead and zinc deposits of Ontario

Publication Number: MDC012 Page: 269  Date: 1969

Author: Shklanka R.

Publisher Name: Ontario Dept. of Mines

Location:

MonoMap - Mineral Prospects of the Swayze Greenstone Belt (Volume 1, Parts of NTS 41 O and Volume 2, Parts of NTS 41 P, 42 A and 42 B)

Publication Number: OFR5912 Page: 150-152  Date: 1995

Author: Fumerton S.L., Houle K.A.

Publisher Name: Ontario Geological Survey

Location:

Core - Core library

Publication Number: core Date: 1998

Author:

Publisher Name:

Location: Timmins RGP

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