Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52N04NE00077

Record: MDI52N04NE00077

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Bateman

Latitude: 51° 7' 46.57"    Longitude: -93° 44' 19.52"

UTM Zone: 15    Easting: 448306.681   Northing: 5664497.017    UTM Datum: NAD83

Resident Geologist District: Red Lake

NTS Grid: 52N04NE

Point Location Description: N/A

Location Method: Data Compilation

Exploration History

1926: 8 claims were staked by McCallum Red Lake Mines Ltd. c. 1930: Stripping and trenching. 1933: Part of the present property held by Wilson Red Lake Gold Mines Ltd. 1941-42: Diamond drilling. 1943-44: McFinley Red Lake Gold Mines Ltd. acquired various groups of claims from the above companies. After various re-organizations, the company became known as McFinley Mines Ltd. 1944-45: Magnetometer survey, geological mapping, trenching. 1944-46: Diamond drilling totalling 14822.1 m. 1957: Shaft completed to a depth of 129.0 m, with levels at 45.75 m, 84.0 m and 122.0 m. Total of 428.4 m of underground development and 894.2 m of underground diamond drilling. 1974: Sabina Industries Ltd. acquired 60% of McFinley Mines Ltd. 1975: Magnetometer and EM surveys, 25 drill holes totalling 2578.65 m. 1981: Bulk sampling. 1983: Diamond drilling.

Geology

Province: Superior

Subprovince: Uchi

Terrane: North Caribou

Domain: Uchi

Belt: Red Lake

Geological Age: Archean  

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Geology Comments

Dec 07, 2005 (K R Kettles) - GEOLOGICAL DESCRIPTION: The McFinley property is primarily underlain by highly altered mafic metavolcanic flows. These rocks strike at approximately N30deg.E and dip 65deg. to 75deg. northwest. Pillows have been observed in the flows, and stratigraphic tops are to the northwest. The rocks have been moderately to intensely sheared, and the foliation is parallel to sub-parallel to the stratigraphy. Where highly sheared, the mafic metavolcanic rocks have been silicified, carbonatized and are biotitic. Thin bands of iron formation are found intercalated within the volcanics. Locally, the iron formation bands are folded and brecciated, and contain quartz stringers and disseminated to massive sulphide layers. A long narrow unit of talc-schist has been intersected by drilling to the southeast of McFinley Peninsula. This altered ultramafic unit is continuous to the north end of McFinley Island, and is northwest of and parallel to the East Bay Serpentinite. DEPOSIT DESCRIPTION: The N1 anomaly is at least 1200 m long, but has only been tested for a strike length of approximately 100 m. Good base metal and silver values and low gold values were obtained from a zone of massive sulphides replacing iron formation. GEOPHYSICAL DATA: An EM anomaly with a strike length of approximately 1200 m caused by massive sulphides in an iron formation unit.

Lithology

Lithology Comments

Dec 07, 2005 (K R Kettles) - The McFinley property is primarily underlain by highly altered mafic metavolcanic flows. These rocks strike at approximately N30deg.E and dip 65deg. to 75deg. northwest. Pillows have been observed in the flows, and stratigraphic tops are to the northwest. The rocks have been moderately to intensely sheared, and the foliation is parallel to sub-parallel to the stratigraphy. Where highly sheared, the mafic metavolcanic rocks have been silicified, carbonatized and are biotitic. Thin bands of iron formation are found intercalated within the volcanics. Locally, the iron formation bands are folded and brecciated, and contain quartz stringers and disseminated to massive sulphide layers. A long narrow unit of talc-schist has been intersected by drilling to the southeast of McFinley Peninsula. This altered ultramafic unit is continuous to the north end of McFinley Island, and is northwest of and parallel to the East Bay Serpentinite. The N1 anomaly is at least 1200 m long, but has only been tested for a strike length of approximately 100 m. Good base metal and silver values and low gold values were obtained from a zone of massive sulphides replacing iron formation.

Mineralization

Mineralization Comments

Dec 07, 2005 (K R Kettles) - In a surface trench, a 1.5 m section of massive sulphide assayed 11.8% zinc, 1.6% lead, 0.08% copper, 5.2 oz/ton (178.282 g/tonne)Ag and 0.04 oz/ton (1.371 g/tonne)Au. A hole drilled to intersect the zone at depth returned assays as high as 0.12 oz/ton (4.114 g/tonne)Au over 0.7 m and 0.23 oz/ton (7.886 g/tonne)Ag over 1.86 m.

Alteration Comments

Dec 07, 2005 (K R Kettles) - The mafic metavolcanic rocks have been silicified, carbonatized and are biotitic. Locally, the iron formation has been replaced by massive sulphides.

Mineral Record Details

References

File - Resident Geologist's Files, Red Lake

Publication Number: RGF 1974 Date: 1974

Author: Bacon, W.R.

Publisher Name:

Location: Red Lake RGP

File - Resident Geologist's Files, Red Lake

Publication Number: RGF 1980 Date: 1980

Author: Seeber, O.A.

Publisher Name:

Location: Red Lake RGP

Mono - Gold occurrences, prospects, and deposits of the Red Lake area, volumes 1 and 2

Publication Number: OFR5558 Date: 1987

Author: Durocher M.E., Burchell P.S., Andrews A.J.

Publisher Name: Ontario Geological Survey

Location:

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