Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41P12SW00073

Record: MDI41P12SW00073

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Silver

Location

Township or Area: Chester

Latitude: 47° 33' 20.96"    Longitude: -81° 53' 30.16"

UTM Zone: 17    Easting: 432913.58   Northing: 5267318.7    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41P12SW

Point Location Description: Entrance to the portal.

Location Method: Field Visit with GPS

Access Description: Easy Access to the deposit is possible from Highway 144 via the Young Shannon mine access road. Branching of this road at an exploration camp site is a secondary road to the mine site. A gate is installed at the camp site.

Exploration History

1931: Labbe - prospecting. 1947: Chesgo Gold Mines - bulk sampling, channel sampling, diamond drilling. 1965: Manderson et al - ground magnetic survey. 1969: Three Duck Gold Mines Ltd. - VLF-EM survey, stripping, trenching. 1970: Kingbridge Mines - geological evaluation, 2 ddh, stripping, bulk sampling. 1974: Olympian International: diamond drilling, processing of bulk samples. 1979-81: Murgold Resources - airborne radiometric, magnetic and VLF-Em survey, stripping, trenchining, mapping, soil geochemistry, ground VLF-Em survey, 2405 m diamond drilling. 1986-89: Chesbar Resources - underground ramp to 188m, diamond drilling. 2009: Trelawney Mining and Exploration performed four diamond drilling holes. 2010: Trelawney Mining and Exploration Inc dewatered and rehabilitated most of the underground workings, AEM, AMag. 2011: The project has went into advanced exploration and closure permits are filed. Bulk sampling and test stoping is underway.

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) - The mineralization is hosted in a number of closely spaced veins in a set of shears. Individual shears can be as small as 2cm surrounded by alteration and form a stockwork or be thicker simpler shears. The shears form a zone about 60m thick.

Lithology

Lithology Comments

Dec 07, 2005 (S Fumerton) - The main rock is a dark, coarse grained, hornblende biotite diorite with local pegmatoid phases. This unit is intruded by a number of irregular, finer grained and more felsic granodioritic phases of the Chester Granitoid Complex. A number of younger Matachewan diabase dykes cut through the deposit. Variable intensity epidote, carbonate, chlorite, and biotite together with some muscovite alteration envelopes the mineralization in the shear zones. The epidote alteration is generally more abundant in the dioritic phases. Silicification occurs as a fine to medium grained sugary replacement of the granodioritic phases.

Mineralization

Mineralization Comments

Dec 07, 2005 (S Fumerton) - There are a series of veins, some of which are banded fine grained quartz veins and others are quartz - iron carbonate veins. Both contain very fine grained, sparsely disseminated pyrite. The adjacent wall rock is also mineralized with disseminated sulphides and local short (<20cm) quartz / sulphide veins which are parallel to the main veins. The larger veins pinch and swell along strike between <5cm to 30cm and there may be multiple veins in a single shear.

Dec 07, 2005 (A Wilson) - Composite bulk sample collected in 1947 averaged 166 g/t Au and wall rock graded 96 g/t Au. Channel samples taken the same year had weighted averages of 30 g/t Au. Bulk samples processed in 1974 averaged 5.8 g/t Au and 10 g/t Au. The west Watts trench graded 17 g/t Au across 40 m (1979) and east Watt trench graded 7 g/t Au across 0.9 m. In 1986 metallurgical testing of the vein, a 10 000 tonne bulk sample returned 2.48 g/t Au. Grab samples collected by the OGS in 1987 returned values of 9.2 g/t Au, 13.0 g/t Ag; 78.35 g/t Au and 16.4 g/t Ag.

Nov 14, 2011 (P Bousquet) - Trelawney Mining and Exploration Inc intersected to up to 54.05 g/t Au over 0.43metres during underground drilling underneath the Watts Zone. It was refered as a New Parallel Zone in the hanging wall.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 1       Structure Type: Shear

Site Visit Information

Date: Jul 25, 1988

Geologist: J Ireland

Notes: A visit was made to discuss progress of the ongoing underground exploration program and to discuss the recent announcement of a 150 ton per day gravity mill to be constructed on site. The writer was met by Mr Todd Hamilton. The current phase of ramp development has been completed. The Hangingwall access ramp has been driven to a vertical depth of 515 feet. Underground drilling is continuing at 100 ft spacings. Fill-in drilling at 50 ft and 25 ft spacings has begun from in the lowest sections of the ramp. On the 400 ft level over 400 feet of drifting has been completed on the No. 3A Vein. Face sampling returned an average of 0.257 opt Au across 6.9 ft for the first 100 ft. Since January, 1988, 74 underground holes totalling 20,600 ft have been completed on the No. 3 Vein Zone. Drilling is expected to continue until September 1988 when the budget is expected to be depleted. Economic gold values over minable widths have been encountered as deep as 800 ft. Mr Hamilton stated that reserves in all categories currently stand at 423,546 tons averaging 0,223 opt. In June a decision was made to construct a 150 TPD gravity test mill. Construction is expected to start this fall as site locations for the mill, tailings disposal have been approved. The mill will process 3,000 tons of development ore currently stockpiled. Ore from planned raise development on the 200 and 200 ft levels will also be processed. Metallurgical testing is currently under way to determine the expected rate of recovery using gravity separation. [ PRECIS ]

Date: Sep 24, 1993

Geologist: S Fumerton

Notes: A quick visit was made to the site and work was nearly complete to seal off the portal with loose mine muck. All equipment has been removed from the buildings on site except for fuel tanks and plumbing. The remaining buildings still standing are in a poor condition and would appear to have been machine shops, garages and compressor stations. A series of old trenches and possible open cuts pass immediately south of the buildings.

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-25  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 Three Duck lakes area

Publication Number: ARV41-03.001 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 - 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:

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 Makwa-Churchill area

Publication Number: ARV43-03.002 Date: 1998

Author: Laird H.C.

Publisher Name: Ontario Dept. of Mines

Location:

Article - Porcupine North and Porcupine South Resident Geologists' area - 1987

Publication Number: MP138.010 Date: 1997

Author: Luhta L.E., Sangster P.J., Draper D.M., Ireland J.C., Bradshaw M.P., Hamblin C.D.

Publisher Name: Ontario Geological Survey

Location:

Article - Timmins Resident Geologist's District - 1988

Publication Number: MP142.012 Date: 1997

Author: Luhta L.E., Sangster P.J., Draper D.M., Ireland J.C., Bradshaw M.P., Hamblin C.D.

Publisher Name: Ontario Geological Survey

Location:

Article - Timmins Resident Geologist's District - 1989

Publication Number: MP147.012 Date: 1997

Author: Luhta L.E., Sangster P.J., Ireland J.C., Hamblin C.D., Bradshaw M.P.

Publisher Name: Ontario Geological Survey

Location:

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

Publication Number: OFR5844 Page: 95-99  Date: 1993

Author: Siragusa G.M.

Publisher Name: Ontario Geological Survey

Location:

Mono - Lithogeochemistry of Three Gold Settings in the Southern Swayze Belt

Publication Number: OFR5858 Page: 21-32  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: 442-443, 443-447  Date: 1995

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

Publisher Name: Ontario Geological Survey

Location:

Publication - Technical Report on the Côté Lake Resource Update, Chester Property, Ontario, Canada, 144p.

Publication Number: NI 43-101 rpt Date: 2012

Author: W.E. Roscoe and R.B. Cook

Publisher Name:

Location: Timmins RGO

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For detailed information regarding this mineral record please contact the Timmins Resident Geologist District Office