Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41P12SE00013

Record: MDI41P12SE00013

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Copper

Location

Township or Area: Groves

Latitude: 47° 36' 26.42"    Longitude: -81° 41' 59.23"

UTM Zone: 17    Easting: 447404.3   Northing: 5272896.14    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41P12SE

Point Location Description: Base of CNR railway track approximately 2 m north of the outcrop exposure.

Location Method: Data Compilation

Access Description: By boat launched at Gogama down to the south end of Minisinakwa Lake. A 400 m traverse to the east from a small inlet takes you to the CNR tracks.

Exploration History

1983: Thor Resources Inc. conducted a ground magnetic and VLF electromagnetic survey over a block of claims that includes the showing. A program of geological mapping as well as rock and soil sampling was undertaken followed by a 6 hole diamond drill program over selected soil and geophysical anomalies. The best result from this program was a 5 foot drill section that assayed 0.45 g/t Au from hole TG-83-6 logged as an andesite tuff. 1985: Blue Falcon Mines conducted an airborne magnetic and electromagnetic survey over an area that included the showing. 1986: Canadian Gold Resources Inc. conducted a ground magnetic and electromagnetic survey over an area which included the railway showing. Canadian Gold followed up with a drill program that concentrated on an area to the northeast around Pensyl Lake. 2008: Liberty Mines Inc. – AEM, AMag.

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

Tectonic Assemblage: Ridout

Geological Age: Neoarchean   Geochronological Age: 2705 MA   Geochron. Age Ref.: GOO VOL 1

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Geology Comments

Dec 07, 2005 (K Houle) - Exposure follows the subvertical schistosity that trends approximately at N 72 E.

Lithology

Lithology Comments

Dec 07, 2005 (K Houle) - Outcrop of chlorite-biotite schist interbedded with silicified sediments (?). Exposure of gossan zone with a 6 m strike length. The rock has 'abundant mottlings that have contrasting dull-white and reddish brown colours, and are chaotically arranged. Silicification comprises a few, thin, patches of bluish quartz which are remnants of a 'formerly continuous sub-vertical quartz vein parallel to the foliation plane.' (Siragusa, 1993).

Mineralization

Mineralization Comments

Dec 07, 2005 (K Houle) - Mineralization consists of predominantly disseminated pyrite within the chlorite-biotite schist with stringers of massive and semi-massive sulphides occurring in the silicified sections. Stringers have been reported up to 1 inch in thickness within the 'mottled' (i.e. silicified sections) and have been found to contain hematite, chalcopyrite and ankerite. Mineralized sample is reported to have assayed 0.13% Cu (Siragusa, 1993).

Dec 07, 2005 (A Wilson) - Grab samples collected by the OGS in 1994 returned a value of 0.01% Ni, 0.01% Cu and 0.02% Zn.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Site Visit Information

Date: Jun 03, 1994

Geologist: K Houle

Notes: Outcrop is on a N/S slope about 2 m south of the CNR tracks. Outcrop has been previously trenched in both N/S and E/W directions. Each trench is less than 3 m long. Showing consists of brecciated and silicified zone of about 10 cm. wide within a chlorite schist. The brecciated zone contains angular silicious fragments within a matrix of brown rusty material and up to about 10% disseminated crystals and small stringers of pyrite. Trace chalcopyrite was also noted.

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: 41P-60  Date: 1985

Author: Rose, D. G.

Publisher Name: Geological Survey of Canada

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

File - Resident Geologist file T-3067 (OM85-5P-260)

Publication Number: Date:

Author:

Publisher Name:

Location: Timmins RGP office

Map - Geological series, Precambrian geology of Pensyl Lake area, Sudbury District

Publication Number: P2534 Scale: 1:15,840    Date: 1982

Author: Siragusa G.M.

Publisher Name: Ontario Geological Survey

Location:

Map - Precambrian Geology, Parts of Champagne, Groves, St. Louis and Benneweis Townships

Publication Number: OFM0209 Scale: 1:15,840    Date: 1993

Author: Siragusa G.M.

Publisher Name: Ontario Geological Survey

Location:

Part - Geology of the Makwa-Churchill area

Publication Number: ARV43-03.002 Date: 1998

Author: Laird H.C.

Publisher Name: Ontario Dept. of Mines

Location:

MonoMap - Geology, Geochemistry and Mineralization of the Southern Margin of the Swayze Belt

Publication Number: OFR5844 Page: 116-117  Date: 1993

Author: Siragusa G.M.

Publisher Name: Ontario Geological Survey

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: 380-382  Date: 1995

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

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