Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41O15SW00003

Record: MDI41O15SW00003

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Denyes

Latitude: 47° 48' 52.71"    Longitude: -82° 49' 16.81"

UTM Zone: 17    Easting: 363652.834   Northing: 5297304.674    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41O15SW

Point Location Description: Quartz vein stockwork exposed in a trench.

Location Method: Field Visit with GPS

Access Description: It is possible to access the prospect by all terrain vehicle. This requires a long (approximately 20km) trip along the Middleton Road from the Dore road on the eastern boundary of Swayze Township. In places the condition of the road is very poor.

Exploration History

1932-35: Sylvanite Gold Mines Ltd./Erie Canadian - prospecting, trenching, sampling, 5 ddh. 1973: Falconbridge Nickel Mines - geological mapping, sampling. 1976: UMEX - airborne geophysical survey. 1981-84: Johns Manville Canada Ltd. - ground magnetic and EM survey, mapping, radiometric survey. 1984: Canadian Nickel Company - ground magnetic survey, 2 ddh. 1986-89: Glen Auden Resources - mapping, sampling. 1992: Filo and Jones - prospecting, mapping sampling.

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

Lithology

Lithology Comments

Dec 07, 2005 (K Houle) - The mineralization is hosted in a series of parallel porphyry dikes intruding schistose wackes and tuffs. Both the porphyry and schist contain quartz filled fractures with associated carbonate alteration and pyrite mineralization. The main vein has been exposed by trenching over a length 200' (61m), striking to the northwest with a 60 degree dip. A number of narrow zones with quartz stringers occur east of the main vein.

Mineralization

Mineralization Comments

Dec 07, 2005 (K Houle) - Grab samples of quartz with heavy pyrite mineralization have returned assay values up to 0.40 oz./t. Some of the better gold values are reportedly associated with quartz stringers within the schist.

Dec 07, 2005 (A Wilson) - Assays obtained from grab samples taken by Sylvanite Gold Mines in 1934 returned values up to 0.36 oz/t Au. Assays obtained from sampling completed by Falconbridge (1973), returned values of 0.22 oz/t Au over 2.6 m and the highest value reported was 0.69 oz/t Au over 1.5 ft. associated with a chlorite schist. The average value of assays obtained from sampling conducted by Glen Auden Resources was 2.5 g/t Au (0.321 oz/t Au). The best values obtained from grab samples collected by K. Filo in 1992 were 51 921 ppb Au. Samples of pulps from plugger holes returned values as high as 1.11 g/t Au. Grab samples collected by the OGS in 1994 returned values of: 1.84 g/t Au, 0.1 g/t Ag; 0.01 g/t Au, 0.01 g/t Ag; and 0.53 g/t Au, 0.1 g/t Ag.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Site Visit Information

Date: Jul 26, 1994

Geologist: K Houle

Notes: Well foliated mafic metavolcanics are in contact with a weakly foliated to massive feldspar-quartz porphyry. Porphyry appears light beige to white on weathered surface with a slight pinkish hue on fresh surfaces. The porphyry appears predominantly massive becoming weakly foliated towards the mafic volcanic contact. Mafic volcanics are generally well foliated proximal to the intrusive with diminishing foliation away from the contact. Mafic volcanics contain fine disseminated pyrite crystals as well as discontinuous stringers of quartz and quartz-carbonate again proximal to the intrusive contact. Well mineralized quartz stockwork veining occurs at several locations along the contact between the mafic volcanics and the feldspar-quartz intrusive. Sulphide consists of semi-massive pyrite and 6 mm pyrite crystals associated with the 2-4 cm. quartz filled fracture sets. Small sets, < 1cm, of quartz filled fractures also occur within the porphyry away from the contact but are unmineralized. A large north/south trending trench to the east of the main zone exposes a series of alternating feldspar-quartz porphyry and mafic volcanics with varying degrees of foliation. In the southern most part of this trench is an exposure of E/W elongated pillow structures. As you move towards the north several of the mafic units exhibits 'pencil' type rock fragments breaking away from the surface. These fragments may indicate the intersection of two foliations and possible folding of the units. Other evidence for folding includes the presence of small S | Z kink bands and a larger mineralized Z fold plunging shallowly to the east. Evidence from foliation planes and small plunging folds as well as coincident mineralization of contacts and plunging folds may indicate that the contact between the intrusive and the volcanics is folded. The trend of the predominant foliation was found to be about 305 degrees with a 87 degree dip to the north.

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-128  Date: 1985

Author: Rose, D. G.

Publisher Name: Geological Survey of Canada

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

File - Resident Geologist file T-2072

Publication Number: Date:

Author:

Publisher Name:

Location: Timmins RGP office

Map - Halcrow and Denyes townships, Sudbury District

Publication Number: M2120 Scale: 1:31,680    Date: 1997

Author: Donovan J.F.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Swayze gold area, District of Sudbury, Ontario

Publication Number: ARM43B Scale: 1:63,360    Date: 1997

Author: Rickaby H.C.

Publisher Name: Ontario Dept. of Mines

Location:

Part - Geology of the Swayze gold area

Publication Number: ARV43-03.001 Page: 31  Date: 1998

Author: Rickaby H.C.

Publisher Name: Ontario Dept. of Mines

Location:

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

Publication Number: R063 Page: 42  Date: 1968

Author: Donovan J.F.

Publisher Name: Ontario Dept. of Mines

Location:

File - Resident Geologist files 1980, air photos

Publication Number: Date: 1996

Author:

Publisher Name:

Location:

MonoMap - Geology of Swayze and Dore townships, District of Sudbury

Publication Number: R033 Date: 1997

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: 98  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: 241-243  Date: 1995

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

Publisher Name: Ontario Geological Survey

Location:

Map - Geology, Swayze greenstone belt, Rollo Lake, Ontario

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

Author: Heather, K B; Shore, G T

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/210450

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