Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42D14SE00046

Record: MDI42D14SE00046

General

Commodities

Primary Commodities: Gold, Copper, Zinc

Secondary Commodities: Lead

Location

Township or Area: Priske

Latitude: 48° 50' 12.88"    Longitude: -87° 13' 22.31"

UTM Zone: 16    Easting: 483646   Northing: 5409350    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 42D14SE

Point Location Description: Adits, pits.

Location Method: Conversion from MDI

Access Description: The prospect is located in Priske Township about 5.6 km north east of Schreiber and 1.2 km south of Big Bruin Lake (claims TB 10093/773593, claim map G 631, Priske Township). The property is accessible via old roads/trails that extend north and east from Schreiber and Highway 17 east of Schreiber. The Cook Lake road is followed to Big Duck Creek where the property is accessible by all terrain vehicle or by foot. The occurrence is approximately 3 km from Big Duck Creek.

Exploration History

1923-31: Claims were staked, cancelled and restaked. 1932-33: Surface work undertaken. 1934: Schreiber Pyramid Gold Mines Ltd. was incorporated, acquiring a 21 claim group. 1935: A small pilot mill was planned to treat reportedly high grade ore; camp buildings erected and a road built; No. 1 vein traced for 366 m with a number of visible gold showings. Other veins were located, stripped and trenched. The veins were bulk pit sampled and 1701 kg of ore were tested. 1936: Stripping, trenching, diamond drilling performed; numerous buildings cons't; 5 ton bulk sampling mill erected and a 32 V electrical plant installed. At the end of the year, an adit was begun. 1937: An adit was driven into the No. 1 Vein. Kenecho Gold Mines took over in the summer. Three mineralized zones disc. in the SE of the property. Operations suspended in Nov. 1938-1968: The ground changed hands numerous times. 1969: Zenmac Metal Mines Ltd. drilled 5 holes totalling 243 m. 1971-1984: Ground changed hands several times. 1985: HEM, VLF-EM, and mag surveys were conducted by Falconbridge Copper. Geological mapping, stripping, lithogeochemical surveys and sampling followed. 1989: Placer Dome stripped and sampled in the area of the No. 6 Vein. 1992: T. Twomey conducted prospecting, stripping and sampling as part of an OPAP grant. The property was investigated for small scale mining potential. 1995: The property was optioned by RJK Explorations Ltd. 2002: S. Kravchik carried out prospecting and sampling.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Schreiber-Hemlo

Geological Age: Archean  

Geology Comments

Dec 05, 2014 (B Nelson) - Harcourt (1939, pp.21 22) describes the local geology: Trenching on this property has exposed two occurrences of gold. No. 1 vein is exposed in two pits about 1,000 feet (305 m) apart. In both these pits the quartz vein contains pyrite, chalcopyrite and numerous showings of native gold. The vein is just under a foot in width, strikes N5 degreesW and dips 50 degrees to 55 degrees W. It cuts across basic Keewatin flows to the south west of a mass of amphibolite, which outcrops in a band striking northwest. Although the two vein exposures are a considerable distance apart, they are believed to be the same structure because of their alignment,their attitude, and the fact that the vein in each exposure occurs on the east contact of a lamprophyre dike 2 feet (0.61 m) wide. No. 2 vein is exposed about 500 feet (152.4 m) north east of the northerly exposure of No. 1 vein. It is 25 cm wide, strikes roughly N45 degrees W and dips 45 degrees NE. It is crossed by veinlets of calcite containing galena and sphalerite. Stripping has indicated a length of 250 feet (76.2 m). The vein occurs in andesite pillow lava on the north side of the amphibolite mentioned above. Between the amphibolite and the andesite there is a shear zone dipping 80 degreesN which appear to have been developed along a narrow band of sediments. Trenching along this shear zone immediately south of the vein has disclosed mineralization 5 to 6 feet (1.5 to 1.8 m) wide consisting of massive bands of pyrite, pyrrhotite, chalcopyrite and sphalerite. It is reported that a considerable amount of native gold has been removed from the rusty outcrop in this shear zone. This vein (No. 2) was open cut to a depth of about 40 feet (12.2 m) for a distance of 50 feet (15.2 m). On surface the vein appeared strong, and good values were reported. At depth, however, the vein pinched out and work was suspended. Following this development, underground investigation of the No. 1 Vein was undertaken.

Lithology

Mineralization

Mineralization Comments

Dec 05, 2014 (B Nelson) - Six auriferous quartz veins were discovered and explored, including the development of an adit on the No. 1 vein. Most of the previous work and documentation has been recorded on the No. 1 and no. 2 veins The No. 1 vein was exposed by stripping and trenching in two main areas approximately 300 m apart. It is believed that these two main stripped areas now represent Vein No. 1 and Vein No. 1 South. In both areas the vein is approximately 20 to 25 cm in width and strikes 100 to 120 degrees and dips 53 to 60 degrees SW. The No. 1 vein South appears to follow a more northerly strike of 170 60 SW. The No. 1 vein displays a crack seal, laminated nature and contains V.G. py, and cp. Minor tour and chl were also present in the vein. A lamprophyre dike up to 60 cm wide occurs on the west side of the quartz vein. The No. 2 Vein is exposed approximately 150 m north east of the No. 1 Vein. The vein is 25 cm wide and strikes 320 degrees and dips 45 to 82 degrees NE. The vein contains visible gold, py, cp, sp, tour and chl. Zenmac reported a best result of 19.2% Zn and 4.56% Cu over 1' from a drill hole. Very little information on Veins No. 3 - 6 is available, however T. Twomey (1992) conducted an OPAP program in 1992 and described several of the veins. Vein No. 3 was not rediscovered. Vein No. 4 was trenched in the 1930's. Resampling of an old trench by Twomey returned 0.03 ounce Au per ton (Twomey, 1992). Vein No. 5 includes a 6 m wide quartz feldspar porphyry dike with minor anomalous gold values. Vein No. 6 was stripped and washed by Placer Dome in 1989. Historical sampling had returned 0.18 ounce Au per ton across 90 cm (Twomey, 1992). Twomey (1992) who sampled Vein No. 1 for small scale mining purposes stated that the following ore had been outlined: Vein No. 1: 40 T at 1.01 ounce/ton Vein No. 1 South: 52 T at 0.58 ounce/ton Ore Bin: 15 T at 0.35 ounce/ton.

Dec 05, 2014 (Therese Pettigrew) - The best results reported from the 1969 Zenmac Metal Mines Ltd. drill program were reported from a base metal showing located to the north of the #1 Vein Adit returning 4.6% Cu and 19.2% Zn over 0.55 m from the #2 Vein hosted within a chloritic shear zone. In 1984, Falconbridge collected a grab sample from the #1 Vein that assayed 45.2 g/t Au. A grab sample taken on the #2 vein returned 31% Zn and a 1’ channel sample reported 13.77% Zn (Bard Ventures Exploration Update – Little Bear Lake Property, Feb 16/12).

Mineral Record Details

Site Visit Information

Date: Feb 14, 1997

Geologist: B Nelson

Notes: Resident Geologist personnel visited the site in August of 1985, July 1, 1987, and August 5, 1992. Assay results ranged from <0.01 oz/ton Au to 0.92 oz/ton Au from the No. 1 vein. Silver results ranged up to 4.47 oz/ton from a sulphide rich zone in the No. 2 Vein. Copper, lead and zinc values up to 17.5%, 365 ppm, and 22.9% respectively were attained.

References

Part - The southwestern part of the Schreiber area

Publication Number: ARV47-09.001 Page: 21-22  Date: 1998

Author: Harcourt G.A.

Publisher Name: Ontario Dept. of Mines

Location:

File - Resident Geologist Mineral Deposit Files

Publication Number: Min Dep Date: 1996

Author:

Publisher Name:

Location: Thunder Bay RGP

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

Publication Number: OFR5951 Page: 284-293  Date: 1996

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

Publisher Name: Ontario Geological Survey

Location:

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 - 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:

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:

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:

Map - Schreiber sheet, District of Thunder Bay, geological compilation series

Publication Number: P0360 Scale: 1:126,720    Date: 1997

Author: Pye E.G.

Publisher Name: Ontario Dept. of Mines

Location:

Compend - Report of Activities 1992, Resident Geologists

Publication Number: MP161 Date: 1993

Author: Fenwick K.G., Pitts A.E., Newsome J.W.

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