Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42B01NE00011

Record: MDI42B01NE00011

General

Commodities

Primary Commodities: Copper

Secondary Commodities: Nickel

Location

Township or Area: Keith

Latitude: 48° 8' 18.72"    Longitude: -82° 13' 42.52"

UTM Zone: 17    Easting: 408607.4   Northing: 5332427.55    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 42B01NE

Point Location Description: An old pit which has been fenced off with orange plastic fencing located just east of L12+00W.

Location Method: Field Visit with GPS

Access Description: Easy access is possible by driving along the Horwood Lake access road to the CNR Groundhog River Stop. From this point a short traverse across the bridge comes to within a couple of hundred metres of the trenches which are mostly located south of the tracks.

Exploration History

1929 S. Cook staked the ground and carried out a program of stripping, trenching plus some shaft sinking. This work exposed mineralized shear zones. 1947 Keith Gold Mines optioned the ground, mapped the property and cored 3,318' in a diamond drill program. Results of this work are not on file. 1947 Purdy Mica optioned the property together with other claims to the east. Results reported from the diamond drill program include one hole with some copper mineralization. No results from the original showing were reported. 1988 Glen Auden flew an airborne Magnetic/Electromagnetic survey over a large area which included this showing. Follow-up work consisted of geological mapping together with IP and ground magnetic surveying. 1998 – 1999: Denomme, R.C. – Assays, Lc, Pr, Samp. 2008: Golden Chalice Resources Inc. – AEM, AMag.

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) - Shearing along the inferred contacts between the intermediate and ultramafic metavolcanics is the most conspicuous feature.

Dec 07, 2005 (A Wilson) - The occurrence lies within a deformation zone associated with the MacKeith Fault. It is a brittle-ductile fault that trends ENE across much of Keith Township. In the vicinity of the Joburke Mine, it consists of schistose, brecciated and hematized rocks in a zone up to 50 m wide.

Lithology

Lithology Comments

Dec 07, 2005 (S Fumerton) - The observed copper mineralization is hosted in a weakly foliated fine grained intermediate volcanic. This rock is variably altered to chlorite and close to a contact with a medium to coarse grained felsic intrusive, there is strong carbonate alteration. Lenses of medium grained ultramafic metavolcanics occur in close proximity to the known copper mineralization. These metavolcanics, which may be komatiitic, have recrystallized to massive amphibolites with radiating crystals of actinolite. The contacts of this amphibolite unit are highly sheared and form chlorite schists Intruding into the volcanic sequence is a medium grained sericite granodiorite or porphyry which is cut by a quartz vein stockwork. The reported interbedded quartzites plus minor black argillite were not observed.

Mineralization

Mineralization Comments

Dec 07, 2005 (S Fumerton) - The number of early trenches excavated on quartz veins within the sericite granodiorite suggest that gold has been sought on the property. Within the intermediate metavolcanics pyrrhotite, chalcopyrite, and pyrite occur as semi massive veinlets which form a simple stockwork parallel to the felsic intrusive contact. The veinlets are semi massive and up to 10mm wide though typically 2 to 3mm wide. Locally these sulphide veins form pods of massive pyrrhotite over 50cm and semi massive veins up to 6m wide have been reported. The total sulphide content is typically 2 to 3%. Higher base metal concentrations are associated with the occurrence of chalcopyrite which reportedly occur in considerable quantities in brecciated amphibolites. In these breccias the sulphides cement the fragments together. Coarse, disseminated and euhedral pyrite occurs in low concentratIons within the amphibolites. Sphalerite and galena have been reported in late discordant veins. Within the ultramafic rocks, amphibolites and chloritic schists, the only observed mineralization consisted of coarse disseminated recrystallized pyrite. Because of this the reported nickel values may correspond to background concentrations.

Apr 07, 2015 (A Wilson) - Grab samples of mineralized material collected by OGS staff in 1986 returned values of 0.87% Cu, 0.011% Zn and 0.188% Cu, 0.0055% Zn. The best assay returned from mineralized intermediate metavolcanics in 1993 returned a value of 0.822% Cu, 0.822% Ni, 0.0545% Zn.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 4       Structure Type: Breccia

Rank: 1       Structure Type: Contact

Rank: 3       Structure Type: Intersection

Rank: 2       Structure Type: Shear

Site Visit Information

Date: Jul 22, 1986

Geologist: J Ireland

Notes: Original Comments are more than 2000 characters. The data cannot be converted, however the data will still be available in Digitial Prospector Database

Date: May 20, 1993

Geologist: S Fumerton

Notes: The main pit is surrounded by warning signs and orange plastic fencing which has partially collapsed. The pit which is about 2m deep is lined with 12x12 timbers. A second 1 to 2m deep pit was circled with barbed wire fencing but this fencing is now in disrepair. The numerous trenches along the general trend of mineralization have slumped badly with little or no rock remaining visible.

References

File - Resident Geologist files T-73

Publication Number: Date:

Author:

Publisher Name:

Location: Timmins RGP office

Map - Geological series, Operation Chapleau, Horwood Lake sheet, districts of Algoma, Cochrane, and Sudbury

Publication Number: P0673 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:

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

File - Resident Geologist files 1946, air photo

Publication Number: Date: 1996

Author:

Publisher Name:

Location:

Map - Parts of Keith and Muskego townships, District of Sudbury, Ontario

Publication Number: M1950-04 Date: 1997

Author: Prest V.K., Hogg N.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Patricia Showing-Hoodoo Prospect, Minor Element Data

Publication Number: OFM0215 Scale: 1:250    Date: 1993

Author: Siragusa G.M.

Publisher Name: Ontario Geological Survey

Location:

Core - Resident Geologist Core Library

Publication Number: Drill Core Date: 1996

Author:

Publisher Name:

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:

Part - Geology of the Keith-Muskego townships area

Publication Number: ARV59-07 Page: 38-39  Date: 1997

Author: Prest V.K.

Publisher Name: Ontario Dept. of Mines

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:

Publication - Mineral occurrences in the Woman River District, Ontario; Summary report, 1929, part C; by Geological Survey of Canada

Publication Number: GSC SR 1929C Date: 1930

Author: Bannerman, H M

Publisher Name:

Location: https://doi.org/10.4095/102021

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: 571-573  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 Date: 1995

Author: Ayer J.A.

Publisher Name: Ontario Geological Survey

Location:

Map - Geophysical/geochemical series, north Swayze-Montcalm area, airborne electromagnetic survey, total intensity magnetic survey

Publication Number: M81376 Scale: 1:20,000    Date: 1990

Author: Geoterrex Ltd.

Publisher Name: Ontario Geological Survey

Location:

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