Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42D14SE00017

Record: MDI42D14SE00017

General

Commodities

Primary Commodities: Copper, Molybdenum, Sulphur/Pyrite

Secondary Commodities: Gold, Silver

Location

Township or Area: Priske

Latitude: 48° 47' 35.79"    Longitude: -87° 13' 29.95"

UTM Zone: 16    Easting: 483476   Northing: 5404500    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 42D14SE

Point Location Description: Adit

Location Method: Conversion from MDI

Access Description: The prospect is located approximately 121.9 m south of Highway 17 at a point about 8.7 km west of Terrace Bay, just past the turn off for the old Schreiber dump. The Pitkanen Cu Mo prospect lies approximately 400 m to the east (claims TB 786104 and 813667, claim map G 631 Priske Township). The adit is located approximately 80 m southwest of a fenced cemetery plot. Access may be gained from Highway 17, south on a winter road for approximately 120 m and west on a foot path for about 48 m to the adit. From the southwest end of the cemetery site a trail leads to the southwest for about 80 m to the dump and the adit portal.

Exploration History

Circa 1920: One adit, 18 m long, was driven on an iron formation. 1937: J. Crookston transferred the property to Canador Mining Ltd. (TB 24999). 1939: Sylvanite Gold Mines Ltd. examined and sampled the Cleaver claims. However, discouraging gold results were obtained. 1947: The occurrence was acquired by C.S. Downey. 1948: Iron Lake Exploration Ltd. carried out a dip needle survey over the occurrence for Downey. 1950-55: The occurrence was staked and held by various individuals. 1955: C.S. Downey acquired the occurrence from A. Bourguignon, and optioned the property to Noranda Mines Ltd. 1956: Noranda drilled 2 diamond drill holes totalling 165.5 m. 1964: The occurrence was staked by W. Dunham. 1965: All interest was transferred to Hannam Explorations Ltd. as part of a 4 claim group which included the Cu-Mo showing as a primary target. A vertical magnetic intensity survey was conducted. 1968: R. Pitkanen restaked the property and carried out surface work on the nearby Cu-Mo showing. 1969: A vertical intensity magnetometer survey was conducted by Oja Ltd. over a 26 claim group held by Univex. Univex Exploration drilled 3 DDH totalling 238.4 m. 1970: A geochemical survey was conducted for Univex. 1974-91: The occurrence was staked by various individuals. 1980-81: property held by T. Noble. 1983: Lormac Explorations Ltd. drilled 1 DDH totalling 86.9 m. 1985: Lincoln Resources Inc carried out geological mapping and sampling. 1990: G. Daniels and J. Courtney carried out linecutting and geological mapping. 1994-95: The area was staked and prospected by R. Wahl, D. Kakeeway, and E. Beaven. Minor geochemical soil sampling was conducted.

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) - A sulphide-facies iron formation up to 15 to 20 m in width strikes east-northeast. The iron formation is considered to be a continuation of the Downey (West) and the iron formations present on the Harkness-Hays property. Siliceous cherty units intercalated with sulphides and carbonaceous slates are observed. The iron formation is deformed, folded and sheared and secondary sulphide replacement is evident. In addition the chert unit appears recrystallized. Several granitic intrusive rocks are present in the area, which is close to the granite-greenstone contact. Quartz veins present in the area contain chalcopyrite and molybdenite. Such veins are described under the Pitkanen occurrence.

Dec 07, 2005 (B Nelson) - *Holbrooke (1939) described the main showing: The only showing on the Cleaver Claims property occurs near the centre of claim 24999. Here a 60 foot wide band of iron formation is silicified and mineralized by fine pyrite across about 22 feet of its width. Where exposed, the iron formation strikes about N60 degreesE but as it is apparently near the nose of a fold the strike will probably change rapidly. A sulphide facies iron formation up to 15 to 20 m in width strikes east northeast. The iron formation is considered to be a continuation of the Downey (West) and the iron formations present on the Harkness Hays property. Siliceous cherty units intercalated with sulphides and carbonaceous slates are observed. The iron formation is deformed, folded and sheared and secondary sulphide replacement is evident. In addition the chert unit appears recrystallized. Several granitic intrusive rocks are present in the area, which is close to the granite greenstone contact. Quartz veins present in the area contain chalcopyrite and molybdenite. (Resident Geologist's Files, Schreiber Hemlo District, Thunder Bay.)

Lithology

Lithology Comments

Dec 07, 2005 (B Nelson) - Drilling for Univex yielded the following description by *Oja (1969): The hole was collared in 'medium grey, fine grained rhyolitic volcanics with narrow bands of intruded granite. Bands of pyrite, ? to ? inch in width, start at about 38 feet.' A zone of 'massive pyrrhotite with light pyrite and light chalcopyrite' extends from 48 to 62 feet and comes in contact with 'acid volcanic material which grades into medium to coarse grained pinkish grey monzonite and granite.

Jul 03, 2018 (Therese Pettigrew) - The showing is found at the contact of the Terrace Bay batholith and felsic to intermediate metavolcanic rocks (AFRI 42D14SE0058).

Mineralization

Mineralization Comments

Dec 07, 2005 (B Schnieders) - Mineralogy consists of disseminated to massive pyrrhotite, pyrite, minor chalcopyrite and magnetite.

Dec 07, 2005 (B Nelson) - Holbrooke (1939) noted that: Reported values up to 7.00 dwt (0.35 oz./ton) (gold) led to the sampling of the property.The results of our sampling were very discouraging and showed nothing but trace. Samples taken by Resident Geologist personnel ranged from <0.01 to 0.016 oz/ton Au, and trace to 1.84 oz/ton Ag. Cu, Ni, Zn, and Mo values of 6700, 164, 64, and 875 ppm, respectively, were attained.

Jul 03, 2018 (Therese Pettigrew) - Mineralization is of the quartz vein types, occurring at the contact of the metavolcanic and granitoid rocks. The quartz veins appear vuggy in places and carry varying amounts of pyrite, pyrrhotite, and molybdenite. Felsic to intermediate metavolcanics adjacent to the quartz veins appear silicified and contain up to 40% pyrite-pyrrhotite mineralization. The granitic rocks near the contact were previously trenched in one area. These trenches contain quartz vein stockworks carrying up to 5% pyrite-pyrrhotite-chaclopyrite-molybdenite mineralization. Assay results from sampling of the mineralized felsic to intermediate metavolcanics ranged from trace to 0.34 gpt Au. The highest assay result from the quartz vein stockworks within the intrusive was 0.17 gpt Au over a 1 m width (AFRI 42D14SE0058). Samples collected by RGP staff returned assays of up to 0.016 opt Au, 1.84 opt Ag, 6700 ppm Cu, 164 ppm Ni, 64 ppm Zn, and 875 ppm Mo (Schnieders et al., 1996). The mineralized area is about 24 m long, 18 m wide, and trends N60E (Carter, 1988).

Mineral Record Details

Site Visit Information

Date: Feb 17, 1997

Geologist: B Nelson

Notes: Resident Geologist personnel visited the property July 3, 1985; September 16, 1992; July of 1994.

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:

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 - 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:

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

Publication Number: OFR5951 Page: 359-363  Date: 1996

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

Publisher Name: Ontario Geological Survey

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

Publication Number: OFR5692 Page: 168-170  Date: 1988

Author: Carter M.W.

Publisher Name: Ontario Geological Survey

Location:

Book - UNPUBLISHED CORRESPONDENCE, REPORT ON GOLD RANGE MINES LTD., SCHREIBER, ONT.

Publication Number: N/A Date: 1939

Author: Holbrooke, G.L.

Publisher Name:

Location: Thunder Bay RGP

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