Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41O10NE00019

Record: MDI41O10NE00019

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Garnet

Latitude: 47° 43' 40.57"    Longitude: -82° 30' 25.32"

UTM Zone: 17    Easting: 386993.51   Northing: 5287162.13    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41O10NE

Point Location Description: Stripped outcrop just east of Dore Road.

Location Method: Field Visit with GPS

Access Description: Access is via main haul road between the town of Sultan and Highway 144. The Dore Road extends north into Garnet Twp. at a point about 23 km east from Sultan or 57 km west of Highway 144. Following this road for about 15 km you will reach a bridge that crosses the Wakami River. The occurrence is about 250 m north of the bridge, just to the east of the road.

Exploration History

1966-67: Canadian Nickel Co. Ltd. - 3 ddh. 1984-88: Western Pacific Energy - reconnaissance survey, airborne magnetics and VLF-EM survey, ground magnetic, VLF and self-potential surveys, 13 ddh, mapping, stripping. 2011: Cascadero Coppper Corp. – geological mapping.

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

Tectonic Assemblage: Garnet-Tooms

Geological Age: Neoarchean   Geochronological Age: 2729 MA   Geochron. Age Ref.: GOO VOL 1

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Lithology

Lithology Comments

Dec 07, 2005 (K Houle) - Iron formation with semi massive and massive bands of magnetite ranging in size from 0.5 to 2.0 cm., alternating with bands of graphitic argillite containing fine grain disseminated muscovite. Unit is cross cut by quartz-Fe carbonate +/- Fe oxide +/- calcite veinlets up to 3 mm wide. The wider veinlets consist of a fine grained quartz core rimmed by fine grained Fe-carbonate.

Mineralization

Mineralization Comments

Dec 07, 2005 (K Houle) - Approximately 0.5% fine grained disseminated pyrite and very fine trace arsenopyrite have been noted as being associated with the high gold value.

Dec 07, 2005 (A Wilson) - Gold values from diamond drill holes G-85-10 and G-85-11 ranged between 110 and 380 ppb. A grab sample from a roadside outcrop taken in 1986 yielded an assay of 0.144 oz/t Au. Grab samples of oxide facies iron formation returned values of up to 0.14 oz/t Au in 1999. Grab samples collected by the OGS in 1994 returned values of 0.13 g/t Au and 0.1 g/t Ag; 0.01 g/t au and 0.1 g/t Ag; 1.82 g/t Au and 0.2 g/t Ag; 0.93 g/t au and 0.1 g/t Ag; 0.03 g/t Au and 0.5 g/t Ag.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Site Visit Information

Date: Feb 14, 1986

Geologist: J Ireland

Notes: The exploration target is gold with associated base metals in iron formation hosted environment. Diamond drilling targets were selected solely on the basis of geophysical information. An airborne VLF-EM and total intensity magnetometer survey was flownin December 1984. A total of 401 line kilometres were flown with 216 line kilometres covering the two claim groups. The resultant data was compared to ground geophysical data and drill targets were selected. Visual observations of core indicates the source of the conducive horizons is primarily lean chert, pyrite, pyrrhotite, +/- chalcopyrite, magnetite chemical sediments. Several argillaceous to graphitic horizons were also observed in core. In the northwest part of Garnet Township, jasperoid chert and specularite were the dominant components of the iron formation. The dominant rock type observed in core was dark grey, aphanitic to dioritic massive mafic flows. One hole G-5-86 had a significant thickness of highly sheared, pink to green sericite-quartz schist (rhyolite or QFP?) as host to the pyritic chemical sediments.

Date: Jun 29, 1994

Geologist: K Houle

Notes: Shallow dipping magnetite iron formation interbedded with altered Fe-oxide and Fe carbonate sediments. Magnetite layers have an apparent surface thickness of 1-10 cm. with an actual thickness in the range of 1-4 cm. The iron formation in highly convoluted and folded with broken and brecciated sections of various beds. The iron formation unit appears to plunge to the northeast and dip at about 55 degrees south. The iron formation is bounded unconformably to the north and south by felsic tuffs. To the north the tuffs are weakly to moderately foliated while in the south are predominantly massive. An altered medium grained equigranular gabbro intrudes the tuffs to the northeast of the upper contact. Gabbro contains up to about 2% disseminated pyrite. Both the felsic tuff units as well as the iron formation are cross cut by <1-3 cm. quartz veins trending at 200 degrees. The contact between iron formation and north contact, trending at approximately 100 degrees, is mineralized with up to 5% pyrite as small blebs, stringers, and disseminates. Pyrrhotite was also seen occurring <1%. Arsenopyrite, mentioned in previous descriptions, was not observed.

References

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

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:

MonoMap - Geology of the Garnet Lake area, District of Sudbury

Publication Number: R248 Date: 1987

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: 107-109  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