Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41O10NW00002

Record: MDI41O10NW00002

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Greenlaw

Latitude: 47° 43' 2.99"    Longitude: -82° 48' 9.24"

UTM Zone: 17    Easting: 364806.25   Northing: 5286475.44    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41O10NW

Point Location Description: East end of large stripped area to the west of Hotstone Lake.

Location Method: Field Visit with GPS

Access Description: Access is by way of a secondary road south of Chapleau, between Highway 129 and the town of Sultan. Take the Kormak Rd. north past the Canadian National Railway line. A logging road leads north then east into Greenlaw Twp. A small ATV trail at the end of this road will take you to the showing.

Exploration History

1932 A.E. Dumond staked a group of 10 claims on the west side of Hotstone Lake in the interest of Newbec Mines Ltd. 1932-1945 Newbec Mines Ltd. conducted trenching and stripping operations for a total of 1525 m of trenches. Newbec also drilled 7 holes on the property during this period. 1946-1947 Hotstone Minerals Ltd. geologically mapped of 3 new trenches totaling 23 m as well as continued work on 11 of the previous drill holes. A diamond drill program consisting of 26 holes totaling 3034 m was conducted over the main showings. 1977 Granges Exploration AB conducted a drill program on properties that flank the Hotstone patented claims on the southwest and east boundaries. Two holes were drilled on these properties for a total depth of 467'. Both holes intersected primarily intermediate and felsic volcanics with sections of pyrite and less common pyrrhotite mineralization. No assays were reported. 1983 Noranda Exploration Company Ltd. conducted ground magnetometer and VLF surveys over 2 groups of 3 claims on the Hotstone Lake claim group. 1984 Noranda Exploration Co. Ltd. and joint venture partner, International Rhodes Resources Ltd., carried out a program of detailed geological mapping, humus and soil sampling, an I.P. geophysical survey, trenching and channel sampling, and diamond drilling over the Hotstone Lake mineralization zone. A number of gold values in excess of 0.10 oz./t were located along the 'carbonate zone' to the south and west of Hotstone Lake. 1985 Noranda Exploration Company Ltd. drilled one hole totalling 205 m collared on the lower west portion of Hotstone Lake. 2006 Gibson, D.L. – GC, Grav, Mag. 2011 Gibson & Associates Inc. – Lc, Mag.

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

Tectonic Assemblage: Ridout

Geological Age: Neoarchean   Geochronological Age: 2705 MA   Geochron. Age Ref.: GOO VOL 1

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Geology Comments

Dec 07, 2005 (K Houle) - The main vein strikes at S80E and dips 70N and has a maximum width of 2 feet. The quartz-carbonate veins occur in en echelon lenses with plan dimensions ranging from 2'by 8' to 4' by 200'.

Lithology

Lithology Comments

Dec 07, 2005 (K Houle) - Regional geology consists of tightly folded and steeply dipping metasediments and mafic to felsic metavolcanics trending easterly across area. The metasediments form an arcuate belt about 1/2 mile wide in central Greenlaw Township. A major northwest fault passes through Hotstone Lake. Main showing is described as a quartz carbonate vein within schistose greywacke sediments. Other quartz carbonate veins are said to occur as en echelon lenses within folded sediments and sheared green carbonates. The main showing consists of a quartz-carbonate vein in an east-trending shear zone in schistose greywacke. The quartz is described as being glassy to white with little sulphide mineralization and no visible gold. Sampling of the vein has been reported as being high but erratic with grab samples ranging from 0.01 to 0.29 oz. of Au. Noranda Exploration and joint venture partner, International Rhodes Resources Ltd. describe the gold occurrences as being part of a highly sheared carbonatized shear zone. The report identifies this shear zone as being an altered ultramafic volcanic. A zone of green carbonate with dimensions of 40 to 120 feet wide is noted to occur about 150 feet north of the main showing. This zone is said to contain numerous quartz veinlets and is well-mineralized with pyrite. Diamond drill results in this area were noted as being discouraging.

Mineralization

Mineralization Comments

Dec 07, 2005 (K Houle) - Main zone shows little sulphide mineralization and no visible gold. Noranda reported discovering visible gold associated with quartz veining at several locations along the shear zone during their 1984 exploration program. The green carbonate zone to the north is reported as being well mineralized with pyrite but reports disappointing gold values.

Dec 07, 2005 (A Wilson) - Grab samples collected by the OGS in 1994 returned values of 13.5 g/t Au and 0.8 g/t Ag, 1.02 g/t Au and 0.1 g/t Ag, 2.33 g/t Au and 0.9 g/t Ag, 0.02 g/t Au and 0.1 g/t Ag and 8.33 g/t Au and 0.4 g/t Ag.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 1       Structure Type: Fault

Site Visit Information

Date: Jun 15, 1994

Geologist: K Houle

Notes: Outcrop with Au/Cu on OGS geology map consists of interbedded sericite schist and sheared wacke/tuff. There are occasional irregular quartz veins parallel to subparallel to shearing, at 270 AZ with 66 deg dip, but are discontinuous and lack sulphides. Significant rusting is visible on shear and fracture planes. S-folds are commonly observed within the schist ranging in size from 2-3 cm. A large amount of work has been conducted to the west of the lower portion of Hotstone Lake consisting of stripping, trenching, and channel sampling. The area of the work extends from the lower west shore of Hotstone Lake to about a kilometre to the west. In the north and west portion of the stripped and trenched area closest to the lake, a highly sheared zone containing a green carbonate was observed. This zone contained sporadic small white 2-3 cm quartz veins and only trace pyrite was observed. Towards the west the presence of the green mica disappears and the size of the observed quartz vein increases.

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-76  Date: 1985

Author: Rose, D. G.

Publisher Name: Geological Survey of Canada

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

File - Resident Geologist files T-2100

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

Thesis - Geology and geochemical alteration of the carbonate shear zone at Hotstone Lake, Swayze greenstone belt, Greenlaw Township, Ontario

Publication Number: MSc Thesis Date: 1998

Author: Dunbar, P.A.

Publisher Name: Laurentian University

Location: Timmins RGP Office

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

Publication Number: R063 Page: 33, 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: 63  Date: 1979

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

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: 134-136  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