Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41O10NW00003

Record: MDI41O10NW00003

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Copper

Location

Township or Area: Greenlaw

Latitude: 47° 44' 40.69"    Longitude: -82° 49' 12.45"

UTM Zone: 17    Easting: 363560.43   Northing: 5289522.52    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41O10NW

Point Location Description: Remains of old shaft just east of lower east shore of Lee Lake.

Location Method: Field Visit with GPS

Access Description: Road access may be accomplished by taking Highway 677 off Highway 129 south of Chapleau as far as Kormak station. A road leads north from Kormak about 20 km to where it crosses Sylvanite Creek in northwest Greenlaw Twp. A canoe trip north along Sylvanite Creek into lower Lee Lake will give access to the showing.

Exploration History

1932-35: A group of 19 claims was staked by Greenlaw Gold Mines Ltd. along the lower east portion of Lee Lake. Greenlaw Gold Mines performed stripping, pitting, trenching and sunk a 50' inclined shaft close to the east shore of Lee Lake. No assays were found to have been reported with this work. 1972: Cana Exploration Consultants Limited and Broad Scope Development Limited conducted a ground magnetic and electromagnetic survey over the area that includes the showing. Broad Scope also conducted some diamond drilling in an area to the west of the upper and middle portion of Lee Lake. 1977-78: Granges Exploration AB drilled 4 holes on and around Lee lake for a total depth of 553 m. Drill targets appear to have been EM conductors which may be explained by pyritic and graphitic sections in most of the logs. 1983 A ground magnetometer and VLF electromagnetic survey was conducted by Collingwood Energy Inc. on their Lee Lake property. 1984: Collingwood Energy Inc. conducted a combined helicopter borne magnetic, electromagnetic and VLF survey over their Lee Lake property. A geologic mapping and sampling program through David R. Bell Geological Services Inc. was also performed. The Collingwood Energy property was comprised of 64 claims that covered all of Lee Lake and extended north into Denyes Twp and west into Halcrow and Tooms Twps. Grab samples taken from the trenches in the area of the shaft returned assays as high as 816 ppb Au. A grab sample taken from a trench about 600 m to the west of the shaft in the 'West Zone' is reported to have assayed 0.277 oz./t. 1989: Terraquest conducted an airborne magnetic and VLF electromagnetic survey over an area that includes this showing for Patrie Exploration Services. This survey was followed by a ground sampling program to investigate geophysical anomalies. 1994: Granges Exploration AB – Assays.

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

Tectonic Assemblage: Halcrow-Swayze

Geological Age: Neoarchean   Geochronological Age: 2700 MA   Geochron. Age Ref.: GOO VOL 1

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Geology Comments

Dec 07, 2005 (K Houle) - Contact strikes in a northwest direction and dips 60-65 deg to the north.

Lithology

Lithology Comments

Dec 07, 2005 (K Houle) - Regional geology consists primarily of mafic volcanics with units of felsic volcanics intruded by felsic dikes. This showing occurs at the contact between quartz porphyry dike in contact with a diorite intrusive. The contact is sheared and replace by quartz and carbonate. In a geology report for Collingwood Energy Inc. it is stated that the footwall to the felsic porphyritic intrusion is a 'dark green-black, foliated andesite tuff with equigranular light brown to yellowish-green felsic fragments' (Gliddon, 1984). A contact zone exists between the intrusive and the andesite tuff and is said to vary in width from a few inches to a couple feet. This contact zone is highly carbonatized and silicified with narrow quartz-carbonate veinlets.

Mineralization

Mineralization Comments

Dec 07, 2005 (K Houle) - Mineralization consists of disseminated pyrite 5-7% with fine grained magnetite and pyrrhotite. Traces of chalcopyrite have previously been noted as being associated with the sheared contact between the felsic dike and the diorite. No information regarding gold values has been quoted in the early literature but recent sampling of trenches (Collingwood Energy, 1984) report assays as high as 816 ppb Au. Mineralization appears to be restricted to the shear/contact zone or quartz-carbonate offshoot veinlets.

Dec 07, 2005 (A Wilson) - Grab samples collected by the OGS in 1994 returned the following values: 0.18 g/t Au and 0.1 g/t Ag; 0.01 g/t Au and 0.1 g/t Ag.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Site Visit Information

Date: Jun 16, 1994

Geologist: K Houle

Notes: Outcropping in 12 m long trench immediately to the south/southwest of the collapsed remains of the timbered shaft opening. Exposure of dark green, foliated mafic tuff(?) with lighter beige/green fragments(?). One small quartz vein < 3 cm. was observed at the bottom of the trench striking subparallel to north/south trending trench.

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: 41O-75  Date: 1985

Author: Rose, D. G.

Publisher Name: Geological Survey of Canada

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

File - Resident Geologist files T-1774

Publication Number: Date:

Author:

Publisher Name:

Location: Timmins RGP office

Map - Tooms and Greenlaw townships, Sudbury District

Publication Number: M2121 Scale: 1:31,680    Date: 1997

Author: Donovan J.F.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Geology, Swayze greenstone belt, Sultan, Ontario

Publication Number: OF 3384E Scale: 1:50,000    Date: 1999

Author: Heather, K B; Shore, G T

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/210453

Part - Geology of the Swayze gold area

Publication Number: ARV43-03.001 Page: 34  Date: 1998

Author: Rickaby H.C.

Publisher Name: Ontario Dept. of Mines

Location:

File - Resident Geologist files 1980, air photos

Publication Number: Date: 1996

Author:

Publisher Name:

Location: Timmins RGP office

MonoMap - Geology of Halcrow-Ridout lakes area, District of Sudbury

Publication Number: R063 Page: 41  Date: 1968

Author: Donovan J.F.

Publisher Name: Ontario Dept. of Mines

Location:

MonoMap - Geology of the Chapleau area, districts of Algoma, Sudbury, and Cochrane

Publication Number: R157 Date: 1977

Author: Thurston P.C., Siragusa G.M., Sage R.P.

Publisher Name: Ontario Division of Mines

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: 101-102  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 Page: 277  Date: 1969

Author: Shklanka R.

Publisher Name: Ontario Dept. of Mines

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: 138-140  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