Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42D14SW00033

Record: MDI42D14SW00033

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Zinc

Location

Township or Area: Priske

Latitude: 48° 50' 31.9"    Longitude: -87° 15' 19.12"

UTM Zone: 16    Easting: 481267   Northing: 5409945    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 42D14SW

Point Location Description: Map in AFRI 20000004086

Location Method: Data Compilation

Access Description: The occurrence is located in Priske township 1 km northeast of the northeastern shore of Cook Lake, about 3 km north of Schreiber. Access may be gained using a bush road which extends north and east of Schreiber to Cook Lake. A bush road leads to the east-southeast, and the occurrence is located at the top of a steep hill on the south side of the road. the occurrence is approximately 1 km east of the Cook Lake narrows.

Exploration History

Circa 1900: Stripping and test pitting; prospectors J.E. Walker, S. Otisse and J.D. Mudge. 1900: Property examination; J.A. Bow, Inspector of Mines (OBM). 1907: Property examination; E.L. Fraleck. 1909-1910: Surface work; prospector J.D. Mudge. 1915: Patent granted for claim TB1048. 1938: Property examination and sampling; G.A. Harcourt (ODM). 1987: Stripping, sampling and prospecting; prospectors J. Bond and D. Christianson. Property examination and sampling; SH Resident/Staff Geologist (OGS). 2002: S. Kravchik carried out prospecting. 2008: R. Renner conducted prospecting and sampling.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Schreiber-Hemlo

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (D McKay) - The area is underlain by mafic to felsic metavolcanic rocks, predominantly pillowed flows and some pyroclastic rocks. Oxide- to sulphide-facies iron formation is present in the area and northwest trending faults transect the area. Mafic intrusive rocks namely gabbro intrude the area. Late felsic intrusives include quartz porphyry and syenite.

Lithology

Lithology Comments

Dec 07, 2005 (D McKay) - An oxide-facies iron formation up to 6 m wide was observed striking 100 to 120 degrees. The iron formation is hosted by pillowed metavolcanic flows and possible felsic tuff which have been intruded by mafic dikes. A major fault trends 330 degrees and truncates the southeast extension of the iron formation. The iron formation consists of laminated chert, ash and magnetite which has been replaced by pyrite and pyrrhotite. Alteration includes silicification and carbonatization. The iron formation appears to mark the contact between the mafic and intermediate to felsic metavolcanic rocks.

Mineralization

Mineralization Comments

Dec 07, 2005 (D McKay) - The iron formation consists of laminated chert, ash and magnetite which has been replaced by pyrite and pyrrhotite. Grab samples collected from the occurrence in 1987 by OGS staff returned assay values which varied up to 0.01 ounce Au/ton, nil Ag, 1130 ppm Zn and 470 ppm Cu. Although no economic gold values were returned, similar iron formations at the Twomey and Schreiber-Pyramid occurrences have returned economic values and suggest that other iron formations in the area such as the Mudge occurrence should be sampled for gold and base metals.

Jun 22, 2018 (Therese Pettigrew) - Samples collected by R. Renner in 2008 retuned assays of up to 2.583 g/t Au (AFRI 20000004086).

Alteration Comments

Dec 07, 2005 (D McKay) - Alteration includes silicification and carbonatization.

Mineral Record Details

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:

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

Publication Number: OFR5951 Page: 542-544  Date: 1996

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

Publisher Name: Ontario Geological Survey

Location:

Part - The southwestern part of the Schreiber area

Publication Number: ARV47-09.001 Page: 1-28  Date: 1998

Author: Harcourt G.A.

Publisher Name: Ontario Dept. of Mines

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:

Part - Schreiber-Duck Lake area

Publication Number: ARV30-04.001 Date: 1998

Author: Hopkins P.E.

Publisher Name: Ontario Dept. of Mines

Location:

File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files

Publication Number: Min Dep Date:

Author:

Publisher Name:

Location: Thunder Bay RGP

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 - 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:

Map - Geological series, Precambrian geology of the Schreiber area, east part, Thunder Bay District

Publication Number: P2391 Scale: 1:15,840    Date: 1981

Author: Carter M.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