Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41O15SE00028

Record: MDI41O15SE00028

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Copper, Lead

Location

Township or Area: Denyes

Latitude: 47° 48' 59.28"    Longitude: -82° 43' 45.71"

UTM Zone: 17    Easting: 370542.182   Northing: 5297349.473    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41O15SE

Point Location Description: Intersection of the northern cross stripped area with the main stripped area on the No. 1 vein.

Location Method: Field Visit with GPS

Access Description: An easy, though long, trip (12km) with All Terrain Vehicles is required west along the Middleton Road and then north along a branch road. The Middleton Road connects with the main Dore road at the eastern boundary of Swayze Township.

Exploration History

1932: J. E. Derraugh - trenching and sampling. 1932-34: Kirkland Hudson Bay Gold Mines - 11 ddh (600 m). 1969-71: Arthur Brown - trenching, sampling. 1983: Norminex Ltd. - geological mapping, soil geochemistry, ground magnetometer survey, cleaning out old trenches. 1986-88: Glen Auden Resources - geological mapping, resampling, ground magnetometer and IP surveys, lithogeochemical survey, stripping, 11 ddh.

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 (S Fumerton) - The regional structural trend to the rocks in the immediate area is east-west. However, the mineralized quartz veins trend north-south parallel to the pervasive direction of foliation in the porphyry. However, cross shearing parallel to the regional trend occurs within the host porphyry. Where this does occur the intensity of alteration does increase.

Lithology

Lithology Comments

Dec 07, 2005 (S Fumerton) - The mineralized vein is hosted in strongly altered feldspar porphyry - granodiorite which is very strongly altered and sheared. The matrix of the porphyry is fine grained and contain up to 30% subhedral feldspar phenocryst which are up to 4mm in size. The alteration of the porphyry is primarily to an iron carbonate but where the intensity of foliation and shearing is high, sericite alteration is probably more dominant. Angular mafic volcanic xenoliths up to a metre are common within the porphyry. In the vicinity of the mineralized quartz vein trending 023 deg silicification occurs. This alteration is a pervasive, intense replacement of the porphyry. Closely associated with the mineralized quartz vein is a lamprophyre dyke.

Mineralization

Mineralization Comments

Dec 07, 2005 (S Fumerton) - The gold mineralization is hosted in a multi-generation quartz vein. The quartz veining generally is a very fine grained pink quartz with irregular diffuse patches of very fine grained white quartz. Several generations of narrow (<10mm) clear, coarser quartz veins together with sericitic shears form a stockwork within the quartz vein. Parts of the quartz vein has rafted slabs of the wallrock or forms part of an invasive stockwork into the adjacent silicified porphyry. However, the quartz veining is restricted in its strike length and does not extend the length of the stripped area. Sulphides which tend to be concentrated along late chloritic fractures as disseminated to semi massive lenses with pyrite, chalcopyrite and minor galena.

Dec 07, 2005 (A Wilson) - Sampling in 1932 returned values of up to 76 g/t Au from sulphide lenses, but typical values averaged 6 g/t Au. Assays obtained from sampling conducted in 1983 returned values ranging from 0.3 g/t Au to 56 g/t Au. The average gold grade of the vein was determined to be 1.4 g/t Au over 60m in 1986. Chip samples collected by the OGS in 1988 returned values of 0.125 g/t Au, 15.3 g/t Au, 0.03 g/t Au, 0.07 g/t Au. Grab samples collected by the OGS in 1994 returned values of 0.01 g/t Au.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 3       Structure Type: Breccia

Rank: 2       Structure Type: Fault

Rank: 1       Structure Type: Shear

Site Visit Information

Date: Jul 18, 1988

Geologist: J Ireland

Notes: Original Comments are more than 2000 characters. The data cannot be converted, however the data will still be available in Digitial Prospector Database

Date: Aug 04, 1994

Geologist: S Fumerton

Notes: A brief visit was made to the prospect with Bill Yee largely to check the location. It was expected that little could be added to the descriptions on file considering the extensive work that has been carried out. Most descriptions on file report that the mineralization is hosted in a felsic tuff or crystal tuff. Based on my observations during the visit, the host rock is not a extrusive rock but rather it is a porphyritic felsic intrusion that has been strongly foliated in a number of directions. To be even more explicit there are similarities to the more massive and less foliated feldspar porphyry located just south of the Kenty Mine.

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-113  Date: 1985

Author: Rose, D. G.

Publisher Name: Geological Survey of Canada

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

File - Resident Geologist file T-2065

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: 27-28  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: 39-40  Date: 1968

Author: Donovan J.F.

Publisher Name: Ontario Dept. of Mines

Location:

Book - Air photos, 1980, RGP Files

Publication Number: Air Photos Date: 1980

Author:

Publisher Name:

Location: Timmins RGP

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: 60  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 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: 206-209  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