Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41O16SE00011

Record: MDI41O16SE00011

General

Commodities

Primary Commodities: Copper

Secondary Commodities: Nickel

Location

Township or Area: Marion

Latitude: 47° 46' 22.63"    Longitude: -82° 13' 6.44"

UTM Zone: 17    Easting: 408711.19   Northing: 5291784.15    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41O16SE

Point Location Description: Point transferred to a 1:20,000 OBM map directly in the field.

Location Method: Data Compilation

Access Description: Access is difficult and involves a circuitous road trip along the Sultan access road from Highway 144, then driving along the Mallard forest access road to the old trail to Rush Lake. This trail is a 4x4 trail and is 7km to the landing at Rush Lake. From the landing, the showing is about 3km across the lake.

Exploration History

1970 Copper mineralization was found on the shoreline of Rush Lake by S. Ivanov who together with Mr Jerome were grub staked by Parr Mines Ltd. The two prospectors stripped and blasted four trenches prior to staking the ground for Parr Lake Mines. 1971 Northgate Exploration optioned the property and carried out an IP survey centred on the showing. A number of IP anomalies were then drill tested with three holes and the original showing was tested with another three holes. Minor copper (<0.03%) was found in the outlying holes associated with dioritic phases of the pluton. At the showing chalcopyrite, pyrite, bornite occur and copper values up to 0.57% were intersected over 10m. 1985 Blue Falcon Mines flew a combined magnetic and VLF-EM survey over a large area which included the showing. 1987 Daimler Resources together with Monte Carlo GML mapped the area.

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

Tectonic Assemblage: Marion

Geological Age: Neoarchean   Geochronological Age: 2729 +/- 5 MA   Geochron. Age Ref.: OF 3384C

Lithology

Lithology Comments

Dec 07, 2005 (S Fumerton) - The mineralization is hosted in a large granitic pluton with multiple phases ranging from granodiorite to hornblende quartz diorite. At the showing the host rock is a medium to coarse grained, massive hornblende granodiorite with a light green and pink colour. There are also anhedral feldspar megacrysts with diffuse boundaries up to 5mm across. Mafic minerals form 15 to 20% of the rock.

Mineralization

Mineralization Comments

Dec 07, 2005 (S Fumerton) - Typically the mineralization consists of erratically disseminated chalcopyrite which occurs as anhedral grains up to 3mm in size but normally <1mm which form up to 2% of the rock. Other minerals which occur in minor amounts include bornite, pyrite, malachite, and possibly chalcocite. Chalcopyrite and bornite are partially concentrated in late granitic veins and fractures. The bornite grains are locally mantled by chalcopyrite. Malachite occurs in fractures and on the surface where bornite also occurs.

Dec 07, 2005 (A Wilson) - Grab samples collected by the OGS in 1970 returned values of 0.47% Cu, 0.79% Cu, 3.09% Cu and 0.02% Ni, 0.71% Cu and 0.02% Ni. Grab samples taken in 1992 returned copper values of 0.188% and 0.211%.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Site Visit Information

Date: Aug 26, 1992

Geologist: S Fumerton

Notes: The showing was briefly visited together with Marc Leroux (MNDM) while visiting the Falconbridge Exploration camp. The showing is located to a partially overgrown drill trail entering the bush from the lake about 25m SW of a beaver house on the shore line. One distinct trench was found and there are areas on the edge of the outcrop which appear to have been stripped and maybe blasted.

References

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: 41O-151  Date: 1985

Author: Rose, D. G.

Publisher Name: Geological Survey of Canada

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

Map - Chapleau, Algoma, Sudbury districts

Publication Number: M2352 Scale: 1:250,000    Date: 1977

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

Publisher Name: Ontario Division of Mines

Location:

Book - Northern Miner Feb 10 1972

Publication Number: Page: 3  Date: 1972

Author:

Publisher Name:

Location:

Map - Geology, Swayze greenstone belt, Rush Lake, Ontario

Publication Number: OF3384c Scale: 1:50,000    Date: 1999

Author: Heather, K B; Shore, G T

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/210451

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

Publication Number: R157 Page: 246-248  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: 249-251  Date: 1995

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

Publisher Name: Ontario Geological Survey

Location:

Book - Marion Township - unpublished GDIF

Publication Number: GDIF Date: 1986

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