Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41P11NE00051

Record: MDI41P11NE00051

General

Commodities

Primary Commodities: Copper

Secondary Commodities: Gold

Location

Township or Area: Knight

Latitude: 47° 41' 8.49"    Longitude: -81° 2' 29.94"

UTM Zone: 17    Easting: 496874.174   Northing: 5281368.049    UTM Datum: NAD83

Resident Geologist District: Kirkland Lake

NTS Grid: 41P11NE

Point Location Description: Trench

Location Method: Field Visit with GPS

Access Description: About 23 km east of Shining Tree, along Hwy 560, a gravel road leads north. The showing is about 5.5 km northeast of the highway. Take the road to the right at the fork about 1.5 km north of the highway.

Exploration History

Pre-1932: Graham (1932) mentions trenching by the Nipissing Mining Company Limited on the eastern claims. 1968: Timiskaming Nickel Limited completed an airborne magnetic and electromagnetic survey over the property. A number of diamond drill holes were completed in the southern portion of the property. 1998: An airborne magnetic, electromagnetic and radiometric survey was completed by industry and the Ontario Geological Survey (OGS 2000). 1999: D. Burda and M. Thurston completed a ground magnetic and VLF-EM survey, and prospecting over much of the property. 2002: Some stripping and trenching and sampling was completed on the property. 2003: Further overburden stripping was completed in the summer.

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Abitibi

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (D Guidon) - Geological mapping, by Ontario Government geologists (Johns 1999 and Carter 1983), indicates that the area is underlain by mafic and ultramafic metavolcanic rocks. To the southeast, the metavolcanic rocks are overlain by Gowganda Formation argillite and arenite sedimentary rocks. Bands of mafic and ultramafic metavolcanic rocks trend at about 160 degrees. In 1974, M.W. Carter (1983) mapped Natal and Knight townships and discovered a showing of chalcopyrite southwest of Brush Lake. A fault has been mapped along the West Montreal River, trending about 150 degrees, approximately 1 km to the northeast of the showing.

Lithology

Mineralization

Mineralization Comments

Dec 07, 2005 (D Guidon) - The heaviest concentration of chalcopyrite at the Brush Lake showing appears to be associated with a 15 cm white carbonate vein trending at 255 degrees and dipping 50 degrees to the north. Pyrite, chalcopyrite and malachite are disseminated in ultramafic (47% SiO2), fine grained metavolcanic rocks. A grab sample of rusty altered rock collected near the vein (NAD27 Zone 17 5281141N 496866E) assayed 659 ppb Au and 2.7% Cu. Assays filed for assessment work are up to 2.1% Cu (Kirkland Lake assessment file CO-2900). A few metres south of the vein, the rock is fragmental and unmineralized (<6 ppb Au and 128 ppm Cu). Minor disseminated chalcopyrite with patches up to 1 cm in diameter occur up to 20 m to the north and another grab sample at this site assayed 152 ppb Au and 0.8% Cu. Chalcopyrite content is less, with patches up to 1 cm in diameter. Samples taken in 2003 from trenches 200 m SW of Brush Lake assayed 1.32% and 1.88% Cu.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 1       Structure Type: Vein

Site Visit Information

Date: Mar 30, 2004

Geologist: D Guidon

Notes: Property visited July 16, 2003 with G. Meyer and A. Clark. A number of trenches dug in overburden to expose bedrock (photo 730408). Ultramafic rock contained disseminated chalcopyrite and some reddish hematite? stain. Rock was medium grained (Sample 03311, photos 730397-730399). To the north, the rock is fragmental, variolitic, with chloritic alteration (photos 730403-730407). A 15 cm wide qtz-carbonate vein contained disseminated chalcopyrite, pyrite and malachite (sample 3312, photos 730400-730402). A sample of unmineralized rhyolite was collected to the southeast of the vein (03313). About 120 m southwest of the vein rock is fragmental dacite (sample 03314, photos 730409-730411).

References

File - Resident Geologist file CO-2730

Publication Number: Date:

Author:

Publisher Name:

Location: Kirkland Lake RGP office

Map - Natal and Knight townships, Sudbury and Timiskaming districts

Publication Number: M2465 Scale: 1:31,680    Date: 1983

Author: Carter M.W.

Publisher Name: Ontario Geological Survey

Location:

MonoMap - Geology of Natal and Knight townships, districts of Sudbury and Timiskaming

Publication Number: R225 Date: 1983

Author: Carter M.W.

Publisher Name: Ontario Geological Survey

Location:

Map - Precambrian Geology, Shining Tree Area (East Half)

Publication Number: P3389 Scale: 1:30,000    Date: 1999

Author: Johns G.W.

Publisher Name: Ontario Geological Survey

Location:

Part - Tyrrell-Knight area

Publication Number: ARV41-02.002 Date: 1998

Author: Graham A.R.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Precambrian Geology, Shining Tree Area

Publication Number: P3521 Scale: 1:50,000    Date: 2003

Author: Johns G.W.

Publisher Name: Ontario Geological Survey

Location:

Map - Tyrrell-Knight area, districts of Timiskaming and Sudbury, Ontario

Publication Number: ARM41B Scale: 1:47,520    Date: 1997

Author: Graham A.R.

Publisher Name: Ontario Dept. of Mines

Location:

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