Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42D14SE00059

Record: MDI42D14SE00059

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Copper, Zinc, Lead, Sulphur/Pyrite

Location

Township or Area: Priske

Latitude: 48° 51' 57.3"    Longitude: -87° 13' 13.99"

UTM Zone: 16    Easting: 483825   Northing: 5412574    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 42D14SE

Point Location Description: Shaft, stripped areas, trenches, approximated from map in AFRI 42D14SE0075

Location Method: Conversion from MDI

Access Description: The occurrence is located approximately 7.3 km north-northeast of Schreiber in Priske Township, about 0.4 km south of Little Bruin Lake (claim TB 221115, claim map G 631, Priske Township). Easiest access is gained by helicopter to Little Bruin Lake or by float plane to Big Bruin Lake then north by foot trail for approximately 1.5 km. There is also a quad runner (4x4?) accessible trail to Big Bruin Lake.

Exploration History

1935: Surface exploration led to the discovery of the Little Bruin quartz vein. TB 25328 was staked by E. McKenzie. 1935 1941: Trenching and test pitting were carried out. A 1.5 by 2.4 by 5.5 m test shaft was sunk. 1942: The occurrence was restaked as TB 29646 by G. Papineau. 1944: G. Papineau died; all interest in the claim(s) were transferred to L. Papineau in 1945. 1946: Claims lapsed and were restaked as TB 35257 and 35258 by J.E. Halonen (?) and later patented. 1950: 2 diamond drill holes, totalling 26.8 m, were drilled on TB 35257 by J.E. Halonen. 1953: The surrounding claims were staked by M.E. Halonen. All interest was then transferred to M.W. Barnes. 1954: The Barnes claims lapsed. 1961: J.E. Halonen staked the surrounding claim block. 1964: TB 35257 came open and was restaked by J.E. Halonen as TB 111044. 1965: All interest in TB 111044 was transferred to Zenmac Metal Mines Limited. 1966: Halonen's claim lapsed and was restaked by R.W. Pitkanen as TB 126916. 1966-1968: Manual stripping and surface work was undertaken. 1969: The claim lapsed but was restaked by Pitkanen as TB 221115. 1970-1973: Manual and mechanical stripping and trenching was carried out. 1973: Royex Mining Limited and Sturgex Mines Limited acquired options on the 13 claim group from J.E. Halonen. 1975: All interest was transferred to J.E. Halonen. TB 221115 was surveyed. 1981: A 21 year lease was issued for TB 221115. Westfield Minerals Limited optioned the leased claim and 3 staked claims from J.E. Halonen. Geological, E.M. and Magnetic and geochemical surveys were completed and the option was terminated. 1983: TB 35258 was restaked by M.J. Deschene as TB 689060 and all interest transferred to R.A. Schiralli as part of a larger claim group. Property then optioned to Noranda, then United Westland. 1984: Geological, HLEM, VLF-EM and mag surveys, rock sampling and assaying were completed. 1991: D.M. Kukkee carried out prospecting and sampling. 1995: One leased claim is held by J. Halonen. 2010: Bard Ventures Ltd. carried out magnetometer and VLF-EM surveys.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Schreiber-Hemlo

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (B Schnieders) - (see Nelson).

Dec 07, 2005 (B Nelson) - Bartley (1939, p.37) describes the occurrence as: ... a narrow vein averaging 6 inches in width and carrying erratic gold values over a length of 200 feet. The vein strikes N50 degreesW, dips 75 degreesSW, and occurs in sheared brown grey rhyolite near the contact of the granite and the greenstone. It appears to be filling a tension fracture, which has cut across the main shear zone at a high angle. A narrow stratiform chert unit consisting of finely laminated or bedded chert bands, less than 1 mm in size, strikes 125 degrees and dips 60 degreesSW. Interbedded pyrite with possible sphalerite is also present. The chert is lenticular and contains some highly brecciated sections. The brecciated chert contains fine grained pyrite, pyrrhotite, chalcopyrite and sphalerite in both massive and stringer form. The sulphides are laminated or bedded in appearance and have undergone folding, as indicated from cut and polished sections. Analytical results indicated up to 0.20% zinc within the massive sulphides and chert unit. Within the brecciated chert sections secondary quartz veins and lenses are present. The veins display both a crack seal texture and brecciated texture indicating several periods of deformation and mineralization. One quartz vein up to several centimetres in width is located in the northwest trench striking 140 degrees and dipping 60 degreesSE. The vein contains pyrite, pyrrhotite, chalcopyrite, coarse sphalerite, galena, tellurides and gold. Accessory minerals include a white mica (sericite ?), chlorite and carbonate. Both the chemical sedimentary unit and the quartz veins appear hosted by altered metavolcanics and/or metasediments. This area is within 0.5 km of a granitic intrusion. In some places, the veins appear to parallel the cleavage and apparently occur late in the local tectonic history.

Lithology

Lithology Comments

Dec 07, 2005 (B Nelson) - A narrow stratiform chert unit consisting of finely laminated or bedded chert bands, less than 1 mm in size, strikes 125 degrees and dips 60 degreesSW. Interbedded pyrite with possible sphalerite is also present. The chert is lenticular and contains some highly brecciated sections.

Mineralization

Mineralization Comments

Dec 07, 2005 (B Nelson) - The cherty quartz is mineralized with massive sphalerite and chalcopyrite, finer pyrite, galena and native gold. The gold is light yellow in colour and is intimately associated with the pyrite. The shear zone is heavily mineralized with massive sulphides, but no visible gold was noted. Carter (1981c) reports that: Chalcopyrite, sphalerite and pyrite occur as stringers, disseminated specks and in massive slate. L. Halonen (Prospector, Thunder Bay, personal communication, 1984) reports that: The mineralization on the property is exposed in 2 trenches; the northwest trench is approximately 20 metres wide and 2 metres deep, and the southeast trench is approximately 25 metres long, 1 metre wide and 1 metre deep. There is also a 2.4 metre by 1.5 metres shaft which is 7.3 metres deep. A spectacular sample of quartz vein containing abundant visible gold, possible tellurides, carbonate, hematite and limonite gossan was submitted to the Resident Geologist's Office in Thunder Bay by L. Halonen. (Resident Geologist's Files, Schreiber Hemlo District, Thunder Bay) L. and J. Halonen (Prospectors, Thunder Bay, personal communication 1984) related that: A one ton bulk sample taken in the late 1930's is reported to have assayed $1,600 worth of gold. This is equivalent to a grade of about 45.61 oz. Au/ton at a price of approximately $35.00 per ounce gold.

Mineral Record Details

Site Visit Information

Date: Feb 18, 1997

Geologist: B Nelson

Notes: Resident Geologist personnel visited the occurrence August 31, 1984 and September 21, 1985. Samples taken by Resident Geologist personnel yielded results of up to 0.34 oz/ton Au (most Au results were 0.01oz/ton), 0.11 oz/ton Ag, 160 ppm Cu, 700 ppm Pb, 2980 ppm Zn, and 52 ppm Co.

References

Map - Nipigon-Schreiber, geological compilation series, Thunder Bay District

Publication Number: M2232 Scale: 1:253,440    Date: 1973

Author: Carter M.W., McIlwaine W.H., Wisbey P.A.

Publisher Name: Ontario Division of Mines

Location:

Part - The northeastern part of the Schreiber area

Publication Number: ARV47-09.002 Page: 37  Date: 1998

Author: Bartley M.W.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Schreiber area, District of Thunder Bay, Ontario

Publication Number: ARM47J Scale: 1:31,680    Date: 1997

Author: Bartley M.W., Harcourt G.A.

Publisher Name: Ontario Dept. of Mines

Location:

File - Resident Geologist Mineral Deposit Files

Publication Number: Min Dep Date:

Author:

Publisher Name:

Location: Thunder Bay RGP

Map - Schreiber-Duck Lake area, District of Thunder Bay

Publication Number: ARM30A Scale: 1:63,360    Date: 1998

Author: Hopkins P.E., Tanton T.L.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Geological series, Precambrian geology of the Terrace Bay area, west sheet, Thunder Bay District

Publication Number: P2417 Scale: 1:15,840    Date: 1981

Author: Carter M.W.

Publisher Name: Ontario Geological Survey

Location:

Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.

Publication Number: OFR5951 Page: 390-394  Date: 1996

Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.

Publisher Name: Ontario Geological Survey

Location:

Mono - Geology of Schreiber-Terrace Bay area, District of Thunder Bay

Publication Number: OFR5692 Date: 1988

Author: Carter M.W.

Publisher Name: Ontario Geological Survey

Location:

Article - Thunder Bay Resident Geologist area, North Central Region

Publication Number: MP122.004 Date: 1997

Author: Patterson G.C., Mason J.K., Schnieders B.R.

Publisher Name: Ontario Geological Survey

Location:

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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office