Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41P12SW00083

Record: MDI41P12SW00083

General

Commodities

Primary Commodities: Copper, Silver

Secondary Commodities: Gold, Zinc

Location

Township or Area: Chester

Latitude: 47° 34' .28"    Longitude: -81° 54' 59.99"

UTM Zone: 17    Easting: 431050.59   Northing: 5268554.7    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41P12SW

Point Location Description: Drill set up for holes M24 & M25.

Location Method: Data Compilation

Access Description: The easiest access is via canoe across Weeduck Lake from the Chester Shannon mine access road. Alternative access is possible via a series of drill trails and paths around the east end of Weeduck.

Exploration History

1965: Beaverbridge Mines started an exploration program which consisted of a combined ground vertical loop electromagnetic and magnetic survey. This was followed by a geological mapping and small diamond drill program in the following year. Up to 2.3% Cu and 39 g/t Ag (1.16opt) with minor zinc and gold was intersected in the hole 66EM1. Additional drilling carried out in 1967 intersected several additional narrow zones which graded up to 3.85% Cu, 92 g/t Ag and 42 g/t Au (2.97 opt Ag, 1.23opt Au) in hole 67R12. The extensive assaying of core in this hole had a mathematical average of the 0.29% Cu, 9.26 g/t Ag, and 1 g/t Au but the precious metals are concentrated in narrow veins. 1970: Beaverbridge Mines resumed exploration with a short hole which tested a target northeast of the present showing and carried out an Induced Polarization survey. 1972: Rockzone Mines assumed operation of the property then optioned it in the following year. Exploration initially consisted of additional stripping of the showing and 'underwater geological surveying'. In the following year an IP survey was carried out and six holes were drilled on other occurrences. 1981: Murgold Resources Inc. – EM, GL. 1982: Murgold Resources mapped the showing as part of their property and in the following year the mineralization was tested with two drill holes (M24 and M25). These holes intersected both disseminated sulphides and massive sulphide veins but the best value obtained was 1.8 g/t Au over 15cm (0.054opt, 6 inches).

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

Geological Age: Neoarchean   Geochronological Age: 2740 MA   Geochron. Age Ref.: GSC OF 3384G

Geology Comments

Dec 07, 2005 (S Fumerton) - There are a number of narrow shear zones and fault planes related to the mineralization.

Lithology

Lithology Comments

Dec 07, 2005 (S Fumerton) - Mixture of typical medium to coarse grained granodiorite and quartz diorite which form part of the Chester Granitoid Complex. Blue opalescent quartz is pervasive, and fine sparsely disseminated pyrite pyrrhotite and magnetite occur in the matrix. There is a medium grained diabase dyke trending east west along the axis of the small ridge which has small laths of feldspar up to 3mm randomly orientated.

Mineralization

Mineralization Comments

Dec 07, 2005 (S Fumerton) - Disseminated pyrite, pyrrhotite, and chalcopyrite occurs associated with the sheared granodiorite. There are also a number of small quartz and semi-massive sulphide veins with pyrite, pyrrhotite and chalcopyrite along fractures. The higher grade results are associated with these veins which have a core length of up to 30 cm (1').

Dec 07, 2005 (A Wilson) - Up to 2.3% Cu and 39 g/t Ag with minor Zn and Au was found in ddh 66EM1. Additional diamond drilling completed in 1967 returned values up to 3.85% Cu, 92 g/t Ag and 42 g/t Au in hold 67-R12. The best values obtained from a diamond drilling program completed in 1981 was 1.8 g/t Au over 15 cm.

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 2       Structure Type: Joint

Rank: 1       Structure Type: Shear

Site Visit Information

Date: Sep 02, 1993

Geologist: S Fumerton

Notes: Though it is not recorded in the log, the general trend to the shear hosted mineralization in this area is east - northeast. This is subparallel to the diamond drill holes that have tested the mineralization.

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-47  Date: 1985

Author: Rose, D. G.

Publisher Name: Geological Survey of Canada

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

Map - Geological series, Precambrian geology of Chester and Yeo townships, and parts of Neville and Potier townships, Jerome area, Sudbury District

Publication Number: P2449 Scale: 1:15,840    Date: 1981

Author: Siragusa G.M.

Publisher Name: Ontario Geological Survey

Location:

Map - Geology, Swayze greenstone belt, Gogama, Ontario

Publication Number: OF3384G Scale: 1:50,000    Date: 1999

Author: Heather, K B; Shore, G T

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/210455

Mono - Copper, nickel, lead and zinc deposits of Ontario

Publication Number: MDC012 Date: 1969

Author: Shklanka R.

Publisher Name: Ontario Dept. of Mines

Location:

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

Publication Number: OFR5844 Page: 94  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: 430-431  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