Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42B01SW00017

Record: MDI42B01SW00017

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Horwood

Latitude: 48° 2' .78"    Longitude: -82° 16' 5.54"

UTM Zone: 17    Easting: 405459.694   Northing: 5320807.27    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 42B01SW

Point Location Description: Small outcrop under rubbly on the north side of the road in a small cut.

Location Method: Field Visit with GPS

Access Description: Easy access is possible via a new secondary logging road down the Horwwd Peninsula. This road branches off the Kenogaming-Penhorwood main haul road at the Tionaga siding on the CNR mainline. The secondary road is narrow, winding, and presently has a lot of heavy traffic.

Exploration History

1993: G. Ross - discovery, sampling, trenching, stripping, mag and VLF-EM survey. 1994: Prime Haddington - geological mapping.

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

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

Metamorphism Type: Contact

Metamorphism Grade: Amphibolite

Geology Comments

Dec 07, 2005 (A Wilson) - Along the hanging wall contact of the felsic sill, there is a narrow zone of shearing and associated alteration.

Lithology

Lithology Comments

Dec 07, 2005 (A Wilson) - The dominant rock is a fine to medium grained hornblende, biotite quartz-bearing granofels that has probably been derived from an arenite or wacke. Mafic minerals form up to 30% of this rock and pyrite plus pyrrhotite are disseminated throughout in small amounts. THough only evident as a band of black rubble, there would also appear to be a graphitic shale horizon intercalated within the granofels/meta-arenite. Intruding these rocks is a medium to coarse grained quartz syenite or quartz syenodiorite in a narrow sill less than 2 m thick. The contacts of this sill are irregular and locally diconformable. The felsic sill contains a number of closely spaced joints parallel to the contact and surrounded by narrow brown alteration zones (< 1 cm thick). Locally, the sill is also cut by an oblique set of small discontinuous quartz-calcite-chlorite veins.

Mineralization

Mineralization Comments

Dec 07, 2005 (A Wilson) - In the granofels/meta-arenite, there are disseminated pyrite and pyrrhotite grains in the matrix. In addition to these sulphide grains, there are a number of very thin pyrite veins found where the higher grade gold assay values have been obtained. Grab samples collected by Noranda in 1993 returned values of 1.12 g/t Au, 11.5 g/t Au, 8.36 g/t Au and 8.22 g/t Au. Samples taken by the OGS in 1993 did not replicate these values.

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 1       Structure Type: Shear

References

File - Resident Geologists Files - Horwood Township

Publication Number: Date: 1993

Author: Fumerton, S.L

Publisher Name:

Location: Timmins RGP

Report an Error

We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.

Terms of Use

Please review our Terms of Use agreement for this data product.

Ministry Contact Information

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