Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42B01NE00021

Record: MDI42B01NE00021

General

Commodities

Primary Commodities: Gold, Antimony

Secondary Commodities: Copper

Location

Township or Area: Sewell

Latitude: 48° 12' 15.98"    Longitude: -82° 0' 52.14"

UTM Zone: 17    Easting: 424624.07   Northing: 5339520.85    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 42B01NE

Point Location Description: Northern end of southern main trench

Location Method: Field Visit with GPS

Access Description: Access is relatively easy as a 5 km long secondary logging road branching off the Kenogaming Main Haul Road passes the trenches. However, five hundred metres short of the trenches the road has been washed out and a beaver pond covers the secondary road about half way down. N.B. an old culvert under the road bed in the beaver pond has been damaged.

Exploration History

1946: Kalbrook Mining - geological mapping. 1967: OGS - discovery of antimony occurrence. 1971: Card Lake Copper Mines - mag, VLEM, 2 ddh (288 m). 1972: Card Lake Copper Mines - 9 ddh (140 m). 1979: Texasgulf Canada - mag, HLEM, VLF surveys, geological mapping. 1984-85: Comstate Resources - lithogeochemical survey, mapping. 1986: Goldrock Resources - reconnaissance mapping, mag, VLF surveys. 1987: Glen Auden Resources - mapping, lithogeochemistry survey, mag survey. 1987-1988: Goldrock Resources Inc. / Glen Auden resources Ltd. JV – GC, GL, Assays. 1989: American Barrick – drilling, Mag. 2005: Mega Uranium Ltd. / Canadian Golden Dragon Resources Ltd. – DD – 5 – 1201m, Assays. 2007: Trillium North Minerals Ltd. – DD – 8 – 1029m, Assays.

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

Tectonic Assemblage: Muskego-Reeves

Geological Age: Neoarchean  

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Geology Comments

Dec 07, 2005 (S Fumerton) - The mineralized shear zone is narrow (<2m) and well defined with relatively sharp margins. However, several metres from the shear there are a series of closely spaced parallel fractures that have been cemented with various minerals including carbonate.

Lithology

Lithology Comments

Dec 07, 2005 (S Fumerton) - The mineralization is hosted in a narrow shear zone cutting a sequence of massive and pillowed iron tholeiitic basalts. Immediately adjacent to the shear zone the pillows are elongated parallel to the shear zone. A short distance west of the occurrence is a diabase dyke trending 350. This dyke is subparallel to and cuts off the mineralized shear.

Mineralization

Mineralization Comments

Dec 07, 2005 (S Fumerton) - The shear zone is between 1 and 2m thick, and is marked by strongly foliated to schistose rusty, sericitic material. Within the shear, there are axial, fine grained, quartz veins which pinch and swell along strike and have a maximum thickness of 25cm. Within the quartz veins there are variable concentrations of erratically distributed, fine to course grained stibnite, arsenopyrite, pyrrhotite, and pyrite. Flourite and chalcopyrite have also been reported in these axial veins. In the adjacent schistose material, the sulphides are very finely disseminated which imparts a cold grey colour to the rock. Sulphide concentrations are again variable within the schists and locally massive concentrations occur, particularly in the southern main trench. Also 1cm thick bands of massive, very fine grained sulphides occur parallel to the schistosity. These bands may be single bands rich in arsenopyrite, stibnite, or pyrrhotite, or consist of alternating bands of massive pyrrhotite or arsenopyrite or stibnite. Thin seams or micro-veinlets of pyrrhotite or arsenopyrite also occur in the mineralized schist. Chalcopyrite has been reported in trace amounts associated with the pyrrhotite. Where high sulphides occur there is a film of white sulphate and an olive green - yellow sulphur film on the fracture surfaces.

Dec 07, 2005 (A Wilson) - Assays obtained by Card Lake Copper Mines Ltd. indicated up to 1.8 oz/t Au, 7.4% Sb and 2.1% As. Grab samples taken by the OGS in 1970 returned values of 3.05% As and 14.2% Sb and 0.7 g/t Au, 1.1% As and 0.55% Sb. The best values returned from grab samples taken in 1992 were 0.7 g/t Au, 1.1% As and 0.55% Sb.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 5       Structure Type: Shear

References

Map - Leitch Gold Mines Limited surface plan of eastern part of property, parts of Eva and Summers townships, District of Thunder Bay

Publication Number: P0484 Scale: 1:6,000    Date: 1997

Author: Ferguson S.A.

Publisher Name: Ontario Dept. of Mines

Location:

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

Publication Number: GSC OF 1087 Date: 1985

Author: Rose, D.G.

Publisher Name: Geological Survey of Canada

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

Map - Reeves and Sewell townships, Sudbury District

Publication Number: M2230 Scale: 1:31,680    Date: 1972

Author: Milne V.G.

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:

Book - Northern Miner 74-09-19, Card Lake, p. 9

Publication Number: NMINER Date: 1974

Author:

Publisher Name: Northern Miner

Location:

Map - Precambrian Geology, Northern Swayze Greenstone Belt

Publication Number: M2627 Scale: 1:50,000    Date: 1995

Author: Ayer J.A.

Publisher Name: Ontario Geological Survey

Location:

MonoMap - Geology of the Kukatush-Sewell Lake area, District of Sudbury

Publication Number: R097 Date: 1972

Author: Milne V.G.

Publisher Name: Ontario Division of Mines

Location:

File - Resident Geologist files 1980, air photos

Publication Number: Date: 1996

Author:

Publisher Name:

Location:

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

Publication Number: R157 Page: 233-234  Date: 1977

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

Publisher Name: Ontario Division 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: 575-577  Date: 1995

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

Publisher Name: Ontario Geological Survey

Location:

MonoMap - Precambrian Geology, Northern Swayze Greenstone Belt

Publication Number: R297 Page: 47  Date: 1995

Author: Ayer J.A.

Publisher Name: Ontario Geological Survey

Location:

Book - Sewell Township - unpublished GDIF

Publication Number: GDIF Date: 1991

Author: Resident Geologist Staff

Publisher Name:

Location: Timmins RGP

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