Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41P12SW00061

Record: MDI41P12SW00061

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Copper, Molybdenum, Bismuth, Silver

Location

Township or Area: Chester

Latitude: 47° 33' 58.15"    Longitude: -81° 52' 13.02"

UTM Zone: 17    Easting: 434538.59   Northing: 5268448.71    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41P12SW

Point Location Description: Main pit marked on Laird's 1934 map.

Location Method: Field Visit with GPS

Access Description: Very easy access is possible as the trenches are located just north of the Mesomikenka Lake access road which branches off highway 144.

Exploration History

1933: J.F. Eccles-Holmes discovered a number of auriferous quartz veins which were then further exposed in trenches and pits. Channel samples returned up to 17 g/t Au across 1m (0.5opt, 3'3 inches). 1969: Renmark Explorations Ltd. – EM. 1971: Bridge Hill Mines Ltd held the ground covering the showing but focused their exploration activity towards the Strathmore and Gomak gold deposits to the west. 1979: Wm. Sims Industries carried out and airborne magnetic survey in the search for sulphide deposits. This was followed by a prospecting program and channel sampling on the original #1 vein. Results were 2 g/t Au over 2.4m, 16 g/t over 1.4m, and 0.2 g/t (0.06opt / 8.15'; 0.48opt / 4'8 inches; 0.005opt). The old shaft/pit (10m) was dewatered and resampled with the best result being 20 g/t Au (0.59opt) and visible gold was observed. In the following year the prospect was covered in a ground magnetic - VLF-EM survey and the vein was resampled. Assay results ranged between 0.3 and 2.7 g/t Au (0.01 - 0.08opt). 1980: Hargor Resources carried out a trenching program on the original veins. 1985: Blue Falcon Mines carried out a regional airborne VLF-EM and magnetic survey which covered the area. 1987: Consolidated Silver Butte Mines started an exploration program which consisted of VLF-EM and soil Au/Ag geochemical surveys. This was followed by an overburden stripping and sampling program on a number of outcrops in the area which reported low gold values associated with disseminated pyrite and arsenopyrite. Blue Falcon Mines Ltd. – Str. In 1989 the area surrounding the showing was geologically mapped. 1990 Blue Falcon Mines flew a second VLF-EM and magnetic survey which covered the showing. 1996-1988: G.J. Boissonneault – DD- 4 – 59m, Assays, Str, Tr. 1997: E.J. Blanchard – Assays, Str. 2007: Augen Gold Corp. – AEM, AMag, ARAD. 2011: Sanatana Resources Inc. – AEM, AMag.

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

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

Metamorphism Type: Contact

Metamorphism Grade: Greenschist

Geology Comments

Dec 07, 2005 (S Fumerton) - There are two subparallel foliation directions. These are more pronounced in the horizontal plane than the vertical plane defining a week lineation The general trend of the foliations is 120/75 North. The mineralized veins trend north - south parallel to the Matachewan dykes.

Lithology

Lithology Comments

Dec 07, 2005 (S Fumerton) - Mineralization is hosted in a local strongly foliated phase of the Chester Granodiorite Complex. The rock is also very coarse grained with rounded blue quartz grains (<5mm), which are probably tectonically milled, occurring in short trails. Between these short, quartz rich trails the rock matrix is finer grained and enriched in sericite and some chlorite. Hornblende appears to be altering to chlorite. Generally trending parallel to the foliation is an open stockwork of subparallel quartz stringers.

Mineralization

Mineralization Comments

Dec 07, 2005 (S Fumerton) - The mineralization is hosted in and adjacent to several discontinuous quartz and quartz - carbonate veins that pinch and swell. Veins vary in size between 10 and 50cm across and are at least 5m in length and follow a series of fractures. Adjacent to the veins and locally adjacent to the controlling fractures are disseminated sulphides up to half a metre from the vein / fracture. Disseminated pyrite forming up to 10% locally, together with minor chalcopyrite, occur in the quartz vein and are disseminated in the adjacent granodiorite. The sulphide concentration generally decreases away from the vein or fracture. Molybdenite occurs in trace quantities. As the mineralized veins are parallel to a major fault and Matachewan diabase dykes, and cut the general mineralized 080 or 110 trend, the mineralization has probably been remobilised by the contact metamorphism related to the dykes.

Dec 07, 2005 (A Wilson) - Grab samples collected by the OGS in 1993 returned values of 0.34 g/t Au, 2.3 g/t Ag; 0.14 g/t Au, 0.4 g/t Ag; 0.4 g/t au, 0.7 g/t Ag. Channel sampling in 1979 returned values of 2 g/t Au over 2.4 m, 16 g/t Au over 1.4 m.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 1       Structure Type: Fault

Rank: 2       Structure Type: Intersection

Site Visit Information

Date: Sep 23, 1993

Geologist: S Fumerton

Notes: Over time the original pits documented by Laird (1934) have changed. The north pit is flooded, the open cut has been partially filled with rock to permit hydro service vehicles to pass and the cribbing on the south pit through the overburden has collapsed. Since the original work and the installation of the power line the vein in the main pit has been freshened up with additional blasting. Also a series of closely spaced percussion holes have been drilled across the vein in order to sample 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-48  Date: 1985

Author: Rose, D. G.

Publisher Name: Geological Survey of Canada

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

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:

Part - Geology of the Makwa-Churchill area

Publication Number: ARV43-03.002 Page: 75-76  Date: 1998

Author: Laird H.C.

Publisher Name: Ontario Dept. of Mines

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:

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: 93-94  Date: 1979

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

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

Book - Molybdenum in Canada, Part 2: Molyfile - an index level computer file of molybde

Publication Number: EG 33 Date: 1982

Author: Kirkham, R.V. et al

Publisher Name:

Location: Timmins RGP

Mono - Molybdenum deposits of Ontario

Publication Number: MDC007 Date: 1968

Author: Johnston F.J.

Publisher Name: Ontario Dept. of Mines

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: 111-112  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: 437-438  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