Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41P12SW00064

Record: MDI41P12SW00064

General

Commodities

Primary Commodities: Gold, Copper

Secondary Commodities: Silver

Location

Township or Area: Chester

Latitude: 47° 33' 10.9"    Longitude: -81° 57' 4.74"

UTM Zone: 17    Easting: 428425.58   Northing: 5267061.7    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41P12SW

Point Location Description: Small steel headframe recently constructed and apparently sited on the old shaft.

Location Method: Field Visit with GPS

Access Description: The old mine road from Lake Mesmomikenda via Little Clam Lake is still passable with a two wheel drive vehicle. Though the last kilometre is now heavily overgrown. A more recent and direct drill trail visible on air photos is not recommended.

Exploration History

1927: Shannon - stripping and trenching. 1931-32: Young-Shannon Gold Mines Ltd. - bulk sampling, diamond drilling (11 ddh - 541m), shaft sinking (125 ft). 1938: Clam Lake Gold Mines Ltd. - resampling, diamond drilling. 1965: Shannon Minerals Ltd. - mapping, VLF-EM survey. 1970: Gogama Minerals - HLEM survey, IP survey 3 ddh. 1972: Coniston Exploration - property review. 1979: McVittie and Baxter Minerals - airborne radiometric survey, diamond drilling, stripping, rehabilitation of shaft and lateral development. 1980: Hargor Resources/Canadian Gold and Mtal Inc. - regional airborne magnetic and VLF-EM survey. 1987: Glen Roy Resources - trenching, 5 ddh.

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) - Mineralization is hosted in an open network of discontinuous shear zones. The individual shear zones are <5cm thick, grouped in bands 20 - 30cm thick which in turn occur in an open zone up to 2m thick. Within the broad zone there are numerous cross fractures which vary from hairline in width mineralized with chlorite, discontinuous sulphide grains, disseminated magnetite grains. Away from the mineralization the shear zones consist of a wispy concentration of chlorite and biotite filling shear planes and surrounding quartz grains. Late carbonate sulphide veins are common in the area of the shear hosted mineralization. Within the quartz carbonate veins the carbonate grains define a shallow lineation plunging to the east.

Lithology

Lithology Comments

Dec 07, 2005 (S Fumerton) - The host rock is a fine to medium grained highly siliceous granite or granodiorite. Blue to pale grey to milky white, anhedral quartz grains make up between 50 and 60% of the rock with fine aggregates of biotite and amphibole forming between 1 and 10% of the rock. Very fine pyrite grains are sparsely disseminated in the matrix. Typically this rock is massive though there are places where a moderate foliation is developed. In these foliated portions the rock has a weak green colouration which may be due to chlorite alteration and is in places associated with an Fe carbonate alteration. Weak chlorite and biotite alteration is associated with the shearing. Some fine grained mafic dyke material occurs in the rock dumps which may correspond to the reported occurrence of lamprophyre.

Mineralization

Mineralization Comments

Dec 07, 2005 (S Fumerton) - Disseminated fine grained pyrite and minor chalcopyrite occur in the shear zone which cut the host granodiorite and forms the dominant mineralization. Sulphides are also common in the numerous parting planes. In addition to this there are common short, thin, coarse grained quartz carbonate veins which contain coarse grains of pyrite, chalcopyrite plus trace amounts of the other sulphides. Locally small tourmaline crystals occur in the quartz veins. Typically these veins are up to 10cm thick and less than a metre long and are centred in the shear zones. Associated with these quartz - carbonate veins are some massive to semi massive coarse grained pyrite - chalcopyrite veins which are 3 -4cm thick up to several metres long. Malachite and azurite commonly occurs in the old pit walls together with the more common strong rust stain.

Oct 25, 2013 (A Wilson) - A hand cobbled sample (10 tons) from the main vein taken in 1931 reportedly ran 101 g/t Au, 116 g/t Ag and 4.68% Cu. A 400 lb sample taken the same year reportedly ran 212 g/t Au, 141 g/t Ag, 3.38% Cu and 0.05% As. Weighted average results from diamond drilling completed in 1932 returned values of 21 g/t Au over 0.3 m. Muck samples collected by the OGS in 1993 returned 0.22 g/t Au, 15.3 g/t Ag, 1.02% Cu and 0.04 g/t Au, 0.2 g/t Ag and 0.01% Cu.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 2       Structure Type: Fault

Rank: 1       Structure Type: Shear

Site Visit Information

Date: Jul 28, 1954

Geologist: W Savage

Notes: Geo Moody, field geologist for N.A. Timmins Exploration placed a prospector and helper, W. Hyland and R. Auberton, in Chester township early in June 1954 and paid them a visit on July 27th. The writer flew in from Gogama by Department of Lands and Forests plane and joined Moody and his party on July 28th. The main showings are on a peninsula on the east shore of Clam Lake on claim S-8995(P), west of the outlet. The country rock is a blocky jointed grey granite. The regional east-west band of Ridout Series sediments lies less than half mile to the north. The most pronounced joints strike S80E and dip 40 to 50 to the north. On the south side of the peninsula some shearing took place on these joints planes and the old showings are in this weak shear zone. The main pit is at the west end on the edge of the lake and was flooded by high water. In the east wall of the pit the sheared joints across a true width of about five feet are stained with rust. This pit apparently was sunk on a narrow quartz vein which is not now exposed. Sulphides were deposited with the quartz and well mineralized pieces of the vein can be seen on the dump. The sulphides observed were pyrite, pyrrhotite and chalcopyrite, with some bornite stain. Platings of sulphides on the sheared joints account for the weak gossan. A second smaller pit is located along strike about 80 feet to the east of the first pit at a place where the gossan zone swells to a width of eight feet. To the east and west of the pit the gossan zone pinches rapidly, occurring only as a thin stringer eight feet to the west, and being confined to a narrow shear 1' wide, twenty five feet to the east. Two to three feet of massive sulphides are exposed in the shear on the east wall of the pit which dips 60 to the north. The pit is on the bend where the strike of the shearing swings from S80E to S46E. [ PRECIS ]

Date: Aug 09, 1993

Geologist: S Fumerton

Notes: A two compartment shaft is located near the south shore of the peninsula less than 50m east from the open pit where the 10 ton bulk sample was extracted in the 1930's. The other trenches dating from the same time period give the best exposure of the mineralization. The shaft has been capped with two, 30cm thick concrete slabs each with steel rings and vent pipes. Over the top of the shaft is a small vertical steel headframe anchored with 4 steel wire guys. The head frame appears to be a modified oil drill rig. Connected to the headframe is a wooden rock bin designed for front end loaders. Apparently material was hoisted in small old fashioned carts on light gage rails which are welded to the new headframe. There are a number of rough concrete floor slabs on site but other than the headframe there is no standing structure. The recent muck pile near the shaft is small unlike an older muck pile along the north shore of the peninsula. The remains of the 50 ton per day mill constructed in the 1970's is located 200m east of the headframe and consist of a cribbed unloading ramp, foundations for several crushers, and a series of concrete floors. Other than in the ramp there is little fresh rock and minor amounts of tailings were found in some low ground immediately south of the ruins. The recent trenches excavated by Glen Roy in 1987 are partially flooded and vegetation has taken hold.

References

File - Resident Geologist files T-2016

Publication Number: Date:

Author:

Publisher Name:

Location: Timmins RGP office

Map - Three Duck Lakes area, District of Sudbury, Ontario

Publication Number: ARM41D Scale: 1:47,520    Date: 1997

Author: Laird H.C.

Publisher Name: Ontario Dept. of Mines

Location:

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 - Precambrian Geology, Parts of Chester, Neville, Potier and Yeo Townships

Publication Number: OFM0214 Scale: 1:15,840    Date: 1993

Author: Siragusa G.M.

Publisher Name: Ontario Geological Survey

Location:

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-40  Date: 1985

Author: Rose, D. G.

Publisher Name: Geological Survey of Canada

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

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

Part - Geology of the Three Duck lakes area

Publication Number: ARV41-03.001 Page: 31-33  Date: 1998

Author: Laird H.C.

Publisher Name: Ontario Dept. of Mines

Location:

Part - Geology of the Makwa-Churchill area

Publication Number: ARV43-03.002 Page: 77-78  Date: 1998

Author: Laird H.C.

Publisher Name: Ontario Dept. of Mines

Location:

Publication - Report No. 404: The treatment of a gold-copper ore from Gogama, Ontario; In: Investigations in ore dressing and metallurgy (testing and research laboratories) 1931; Canada Mines Branch, Publication 728

Publication Number: CMB Pub 728 Date: 1932

Author: Anderson

Publisher Name: Canada Mines Branch

Location: https://doi.org/10.4095/307884

Publication - Gold Occurrences of Ontario East of Lake Superior; Geological Survey of Canada, Memoir 192

Publication Number: GSC Mem 192 Date: 1936

Author: Kindle, E.D.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/100824

Publication - Mineral occurrences in Woman River district, Ontario; Geological Survey of Canada, Summary Report 1929, pt. C

Publication Number: Sum Rep 1929 C Date: 1930

Author: Bannerman, H M

Publisher Name: Geological Survey of Canada

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

Mono - Gold deposits of Ontario, part 2, part of District of Cochrane, districts of Muskoka, Nipissing, Parry Sound, Sudbury, Timiskaming, and counties of southern Ontario

Publication Number: MDC018 Page: 52  Date: 1979

Author: Gordon J.B., Lovell H.L., de Grijs J.W., Davie R.F.

Publisher Name: Ontario Geological Survey

Location:

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

Publication Number: MDC012 Date: 1969

Author: Shklanka R.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Preliminary report on the Timmins-Kirkland Lake area, gold deposits file

Publication Number: OFR5467 Date: 1983

Author: Hodgson C.J.

Publisher Name: Ontario Geological Survey

Location:

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

Publication Number: OFR5844 Page: 84-85  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: 403-406  Date: 1995

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

Publisher Name: Ontario Geological Survey

Location:

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