Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42A08NW00047

Record: MDI42A08NW00047

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Bowman

Latitude: 48° 28' 12.06"    Longitude: -80° 28' 21.21"

UTM Zone: 17    Easting: 538986   Northing: 5368677    UTM Datum: NAD83

Resident Geologist District: Kirkland Lake

NTS Grid: 42A08NW

Point Location Description: Pit

Location Method: Data Compilation

Access Description: A point 2.20 km north and 3.83 km west of the southeast corner of Bowman Township. From Matheson, the pitted outcrop may be reached by following southward the gravel road located between lots 4 and 5, Bowman Township. The outcrop on which the pit has been blasted is on the west side of the road about 2.9 km south of the intersection with the gravel road located on the concession III/IV common boundary.

Exploration History

A pit is in the west half of the south half of lot 5 concession 2, Bowman Township, on patented claims. No assessment work pertaining to the pitted outcrop area is on file in the assessment files, Resident Geologist's Office, Kirkland Lake. In 1962-1963, the pit was located but not described. 1976: Ingamar Exploration Co. Ltd. - airborne radiometric survey west and north of the pitted outcrop

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Abitibi

Geological Age: Archean  

Metamorphism Grade: Greenschist

Geology Comments

Dec 14, 2015 (C Salo) - Bedrock consists mainly of southeast striking, subvertically dipping, and southwest facing weakly metamorphosed (greenschist or lower metamorphic facies) tholeiitic mafic and intermediate volcanic rocks of the (Archean) kinojevis Group. A swarm of narrow, north northwest striking (Proterozoic) Matachewan diabase dikes intrudes the volcanic rocks near the pit and a granitic batholith is about 1,200 m to the southwest. A recent geophysical survey failed to detect any significant bedrock conductors near the pit.

Lithology

Lithology Comments

Dec 14, 2015 (A Wilson) - A 2 by 3 by 1 m deep pit has been blasted into massive 1-3 mm grained Fe-tholeiitic basalt. The western pit wall is sheared, with shearing striking 020º and dipping steeply east. A small muck pile adjacent to the pit contains fragments of quartz vein material with associated pyrite which is hosted by fine grained amphibolitized basalt. Quartz veins and stringers in the muck pile are 2-6 cm wide.

Mineralization

Mineralization Comments

Dec 14, 2015 (C Salo) - Sulfide mineralization occurs as 1-10 mm disseminated pyrite cubes marginal to veins in the amphibolitized basalt and as irregular pyrite clots within veins. Some basalt samples in the muck pile contain brick red feldspar. The muck pile also contains scant, 1 mm grained pink felsic material. The amphibolitized basalt marginal to the quartz veins is pervasively dolomitized. Pitted quartz veins are hosted by a narrow shear developed in a small (dimensions on the order of tens of metres) basalt block which is surrounded by north northwest striking Matachewan diabase dike material. The basalt has been amphibolitized (hornblende) and mildly pervasively carbonatized (dolomite) and contains minor late calcite filled fractures. Red feldspar development in the basalt, fine grained felsic material associated with the quartz veins, and quartz veins containing coarse grained pyrite devoid of significant gold concentrations are probably the result of contact metamorphic/metasomatic effects resulting from intrusion of the enclosing diabase. Analyses*: Sample AB-87-20: nil Au ppb, 4 As ppm. Sample AB-87-21: nil Au ppb, 9 As ppm. Sample AB-87-22: nil Au ppb, 14 As ppm.

Mineral Record Details

References

Map - Geological series, Quaternary geology of the Ramore area, districts of Cochrane and Timiskaming

Publication Number: P2381 Scale: 1:50,000    Date: 1980

Author: Baker C.L., Seaman A.A., Steele K.G.

Publisher Name: Ontario Geological Survey

Location:

Mono - Mineral occurrences, deposits, and mines of the Black River-Matheson area

Publication Number: OFR5735 Scale:     Date: 1990

Author: Bath A.C.

Publisher Name: Ontario Geological Survey

Location:

Map - Geological series, Precambrian geology, Ramore area, northwestern part, District of Cochrane

Publication Number: P2860 Scale: 1:15,840    Date: 1985

Author: Jensen L.S.

Publisher Name: Ontario Geological Survey

Location:

MonoMap - Geology of Currie and Bowman townships, District of Cochrane

Publication Number: R040 Scale:     Date: 1997

Author: Leahy E.J.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Geological series, Precambrian geology, Ramore area, districts of Cochrane and Timiskaming

Publication Number: P3131 Scale: 1:63,360    Date: 1989

Author: Jensen L.S.

Publisher Name: Ontario Geological Survey

Location:

Map - Geological series, bedrock samples from the sonic drilling program 1987, Matheson area, District of Cochrane

Publication Number: P3114 Scale: 1:100,000    Date: 1989

Author: Johnstone R.M., Sutcliffe R.H., Steele K.G., Baker C.L., McClenaghan M.B.

Publisher Name: Ontario Geological Survey

Location:

Map - Geophysical/geochemical series, Matheson-Black River area, Bowman Township, airborne electromagnetic survey, total intensity magnetic survey, District of Cochrane

Publication Number: M80594 Scale: 1:20,000    Date: 1984

Author: Questor Surveys Ltd.

Publisher Name: Ontario Geological Survey

Location:

Map - Geological series, Quaternary geology, Porquis Junction area, District of Cochrane

Publication Number: P2949 Scale: 1:50,000    Date: 1985

Author: Richard J.A., McClenaghan M.B.

Publisher Name: Ontario Geological Survey

Location:

Map - Geological series, Quaternary geology, Watabeag River area, districts of Cochrane and Timiskaming

Publication Number: P2950 Scale: 1:50,000    Date: 1985

Author: Richard J.A., McClenaghan M.B.

Publisher Name: Ontario Geological Survey

Location:

Map - Quaternary geology of Matheson area, Cochrane District

Publication Number: P2735 Scale: 1:50,000    Date: 1985

Author: Vagners U.J.

Publisher Name: Ontario Geological Survey

Location:

Map - Precambrian Geology of the Highway 101 Area, East of Matheson, Ontario

Publication Number: M2676 Scale: 1:50,000    Date: 2003

Author: Berger B.R., Luinstra B., Ropchan J.C.

Publisher Name: Ontario Geological Survey

Location:

Article - Reconnaissance till sampling program, Matheson-Lake Abitibi area, District of Cochrane

Publication Number: MP141.081 Scale:     Date: 1997

Author: Steele K.G.

Publisher Name: Ontario Geological Survey

Location:

Map - Geological Compilation of the Lake Abitibi Area, Abitibi Greenstone Belt

Publication Number: P3398 Scale: 1:100,000    Date: 1999

Author: Ayer J.A., Berger B.R., Trowell N.F.

Publisher Name: Ontario Geological Survey

Location:

Article - Quaternary geology and geochemical exploration in the Matheson area

Publication Number: MP136.294 Scale:     Date: 1997

Author: McClenaghan M.B., Lavin O.P., Nichol I., Shaw J.

Publisher Name: Ontario Geological Survey

Location:

Article - Quaternary geology and geochemical exploration in the Matheson area

Publication Number: MP140.294 Scale:     Date: 1997

Author: McClenaghan M.B., Lavin O.P., Nichol I., Shaw J.

Publisher Name: Ontario Geological Survey

Location:

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Ministry Contact Information

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