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Ontario Geological Survey
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MDI41N15NW00055
| Record Name(s) | Gros Cap Mining Location - 1860, Michipicoten Harbour Occurrence - 1900 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect Without Reported Reserves or Resources |
| Date Created | 1980-Jul-15 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Iron
Township or Area: Lendrum
Latitude: 47° 56' 38.32" Longitude: -84° 54' 46.74"
UTM Zone: 16 Easting: 655847.15 Northing: 5312181.73 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 41N15NW
Point Location Description: Decline shaft at Perkwakwia Point
Location Method: Field Visit with GPS
Access Description: Drive 11.7 km from the High Falls/Highway 17 turnoff to Michipicoten Harbour. From there it is an approximately 1 hour walk along the shore of Perwakwia Point to the showing from the Harbour fishery. Alternatively, a boat can be used to access the site from Lake Superior. The site is located approximately 0.5 km west of the light house on the point.
1860-66: J. W. Johnston - shaft sunk to a depth of 64 feet and open cut made on the bed; ore was reportedly shipped from the site between 1860-66. 1899: property acquired by Ely on behalf of Minnesota and Illinois interests. circa 1900: property passed into hands of Algoma Steel Corporation and was included as part of the Gros Cap Mining Location. 1916-18: Algoma Steel Corporation - mapping, testing, 2 ddh (318 m). 1962: Algoma Ore Properties Ltd. - mapping.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| BOSTWICK 0012 | 41N15NW0006 | 41N15NW0006 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Michipicoten
Tectonic Assemblage: Catfish
Geological Age: Neoarchean Geochronological Age: 2.7 MA Geochron. Age Ref.: GOO VOL 1
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
| Rock Type | Rank | Composition | Texture | Relationship | Ironstone-unsubdivided | 1 | Host |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Massive And Variolitic Flows | Near |
Dec 07, 2005 (A Wilson) - There are two major northwest striking beds of banded iron rich chert on the peninsula. The most prominent band consits of banded hematite-chert ironstone with only traces of magnetite. The unit varies from 20-30 m in width.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Hematite | Economic | Ore | ||||
| 1 | Limonite | Economic | Gangue | ||||
| 2 | Magnetite | Economic | Gangue |
Dec 07, 2005 (A Wilson) - A grab sample collected at the site in 1916 returned an assay of 86.8% Fe.
| Rank | Classification |
|---|---|
| 1 | Sedimentary |
| Rank | Characteristic |
|---|---|
| 1 | Stratiform |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Regular | 400 | 25 | 340 | 50 |
Map - Geological series, Precambrian geology, Lendrum Township and parts of Gros Cap I.R. 49, Algoma District
Publication Number: P2681 Scale: 1:15,840 Date: 1983
Author: Massey N.W.D., Jennings E.A.
Publisher Name: Ontario Geological Survey
Location:
Map - Michipicoten area, compilation sheet, District of Algoma
Publication Number: P0184 Scale: 1:126,720 Date: 1997
Author: Goodwin A.M.
Publisher Name: Ontario Dept. of Mines
Location:
Book - Lendrum Township - unpublished GDIF
Publication Number: GDIF Date: 1987
Author: Resident Geologist Staff
Publisher Name:
Location: Timmins RGP
Map - Geological compilation series, Wawa sheet, districts of Algoma and Sudbury
Publication Number: P0640 Scale: 1:126,720 Date: 1997
Author: Leahy E.J., Rupert R.J., Giblin P.E., Giguere J.F.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Mono - Iron deposits of Ontario
Publication Number: MDC011 Page: 77 Date: 1968
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Geology of the Mishewawa Lake area, District of Algoma
Publication Number: OFR5532 Page: 108-110 Date: 1985
Author: Massey N.W.D.
Publisher Name: Ontario Geological Survey
Location:
Mono - Wawa mineral deposits data base
Publication Number: OFR5775 Page: 252-253 Date: 1991
Author: Frey E.D., Stewart R.C.
Publisher Name: Ontario Geological Survey
Location:
Part - Michipicoton iron range
Publication Number: ARV08-02.007 Page: 254 Date: 1998
Author: Coleman A.P., Willmott A.B.
Publisher Name: Ontario Bureau of Mines
Location:
Part - The Michipicoton iron region
Publication Number: ARV11.012 Page: 152-185 Date: 1998
Author: Coleman A.P., Willmott A.B.
Publisher Name: Ontario Bureau of Mines
Location:
Publication - Michipicoten Iron Ranges; Geological Survey of Canada, Memoir 147
Publication Number: GSC Memoir 147 Page: 78-79 Date: 1926
Author: Collins, W H; Quirke, T T; Thomson, E
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100849
Book - Sudbury Timmins Algoma Mineral Program, Project 1: mineral inventory of the Sudbury-Timmins-Sault Ste. Marie region, Ontario
Publication Number: GSC OF 1087 Page: 197 Date: 1985
Author: Rose, D. G.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/129999
Mono - Report Of The Ontario Iron Ore Committee With Appendix 1923
Publication Number: NSP013 Page: 190 Date: 1998
Author:
Publisher Name:
Location:
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For detailed information regarding this mineral record please contact the Sault Ste. Marie Resident Geologist District Office