Ontario Geological Survey
Permanent Link to this Record:
MDI42D15SW00071
| Record Name(s) | Prince Point Occurrence - 1983, Lake Zone - 1983, International Wildrose Petroleum - 1983, McKellar Harbour - 1983, Camp Showing - 1983, Jim's Harbour - 1983 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1997-Feb-21 |
| Date Last Modified | 2023-Aug-03 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Zinc
Township or Area: Walsh
Latitude: 48° 46' 54.96" Longitude: -86° 45' 5.08"
UTM Zone: 16 Easting: 518261.66 Northing: 5403244.71 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42D15SW
Point Location Description: Trench, Location from AFRI 42D15NE0028
Location Method: Field Visit
Access Description: The Prince Point occurrence is located in the Prairie Cove-Prince Point-Fitzsimmons Rocks-McKellar Harbour area, approximately 30 km west of Marathon, and along the northern shore of Lake Superior. The occurrence is in Walsh Township 1.5 km east of Prince Point. Access is via the Trans Canada Highway approximately 7 km east of the Steel River bridge. A bush road heads south to Prairie Cove, however, the crossing at the railways has been removed. Access to the showing is via boat launched at Prairie Cove or Neys Provincial Park.
ca. 1940: Pitting and trenching; Unknown parties. 1983: Reconnaissance mapping, prospecting, soil geochemical and ground geophysical surveys (IP, MAG); International Wildrose Petroleum Ltd. 1984: Airborne geophysical survey; International Wildrose Petroleum Ltd. 1985: Line cutting, geological mapping, soil geochemical surveys and sampling; International Wildrose Resources Ltd. 1986: Ground geophysical surveys (VLF-EM, MAG, HL-EM, IP), trenching and sampling; International Wildrose Resources Ltd. Property examination and lithogeochemical sampling; OGS Resident Geologist staff. 1988: International Wildrose Resources was renamed to Colossus Resource Equities Inc. and drilled 5 DDH totalling 456.1 m.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63.5287 | 42D15NE0016 | 42D15NE0016 |
| 29 | 42D15NE0025 | 42D15NE0025 |
| 2.8701 | 42D15NE0028 | 42D15NE0028 |
| 2.6104 | 42D15NE0035 | 42D15NE0035 |
| 2.9612 | 42D15NE0026 | 42D15NE0026 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Schreiber-Hemlo
Geological Age: Archean
Dec 07, 2005 (D McKay) - Patterson et al. (1987) described the general geology as: The general geology consists of predominantly mafic metavolcanics, mafic intrusive rocks, intercalated felsic fragmental rocks, and iron formation. Late felsic and mafic dikes intrude the metavolcanics. Mafic metavolcanics occur on the Prince Point shore, while metavolcanics of felsic composition with minor intercalated mafic metavolcanic flows occur predominantly on the Fitzsimmons Rocks. Felsic fragmental rocks, several hundreds of metres in width, were observed, possibly suggesting the presence of an ancient volcanic vent in the area. Two volcanic cycles are presumed; however, younging indicators were not readily identifiable. The mafic metavolcanics include pillowed and massive flow rocks, as well as tuffaceous units. An oxide facies iron formation was observed in the Prince Point area, at the contact between a mafic, pillowed metavolcanic unit and a mafic intrusive rock. Whether the mafic intrusive unit represents a coarse-grained flow, feeder dike, or late intrusion was not determined. The oxide iron formation consists predominantly of laminated magnetite and chert, recrystallized chert, and silicate and carbonate minerals. Sulphide minerals include pyrite, pyrrhotite, and sphalerite. The iron formation varies in width from 1 m to a composite zone 3 m in width. The unit strikes 260 and dips 85 N, and was followed along strike for up to 2 km. Isoclinal folding is evident within the iron formation, with one fold axis trending 094 and plunging 64 . The facies of the iron formation varies along strike, from oxide facies, to a facies richer in sulphide mineralization, to possibly a carbonate facies.
| Rock Type | Rank | Composition | Texture | Relationship | Oxide Ironstone | 1 | Oxide-Facies | Host |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Pillowed, Massive And Tuffaceous | Near | |
| Gabbroid-Unsubdivided | 3 | Coarse Flow (?) | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Magnetite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 3 | Pyrrhotite | Economic | Ore | ||||
| 4 | Sphalerite | Economic | Ore |
Dec 07, 2005 (D McKay) - Sulphide minerals include pyrite, pyrrhotite, and sphalerite. LeBel and Campbell (1986, assessment files) state: 'Grab samples along strike indicated values of up to 2,500 ppb gold and 1.08% zinc'. Trenching 250 m west from the main showing uncovered chert-magnetite iron formation from one to 5 m in width. The highest gold value was 100 ppb Au across 0.3 m. A grab sample of recrystallized chert with banded pyrite from this location returned 3,440 ppm Zn and 2,280 ppm Cu. Grab samples collected from the occurrence in 1986 by OGS Resident Geologist staff returned assay values which varied from 55 to 1360 ppb Au, <2 to <2 ppm Ag, 41 to 440 ppm Cu and 77 to 1080 ppm Zn.
File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
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: 742-745 Date: 1996
Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
Article - Thunder Bay Resident Geologist's area, North Central Region
Publication Number: MP134.004 Date: 1997
Author: Patterson G.C., Scott J.F., Mason J.K., Schnieders B.R., MacTavish A.D., Dutka R.J., Kennedy M.C., White G.D., Hinz P.
Publisher Name: Ontario Geological Survey
Location:
Map - Jackfish-Middleton area, Thunder Bay District
Publication Number: M2107 Date: 1967
Author: Walker J.W.R.
Publisher Name: Ontario Dept. of Mines
Location:
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