Ontario Geological Survey
Permanent Link to this Record:
MDI52F07NW00004
| Record Name(s) | Frenchman Island - 1894 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1983-May-26 |
| Date Last Modified | 2022-Aug-03 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Harper Lake Area
Latitude: 49° 22' 59.42" Longitude: -92° 48' 26.05"
UTM Zone: 15 Easting: 513990.777 Northing: 5470070.346 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F07NW
Point Location Description: Precise
Location Method: Conversion from MDI
Access Description: The Frenchman Island Occurrences are located at the northeast end of the Island on mining claim K.594270 and in the middle of the Island on mining claims K.594262 and K.594263 In the Harper Lake area. The entire Island was formerly known as mining location P.150. The occurrences are accessible by boat. (OGS OFR 5723, p. 200; 1989)
1894: Frenchman Island was prospected and staked. Several quartz veins were discovered and some trenching was conducted. A 25 ft. deep shaft was sunk in the middle of the Island. 1933: Trenching reported on the west-northwest-trending quartz vein at the southwest end of the island. 1972: Frenchman Island staked by J. McNeil. 1980: Beth Canada Mining Company staked Frenchman Island and conducted geochemical and geophysical surveys. 1982: Frenchman Island staked by M. Woitowicz and transferred to St. Joe Canada Incorporated who conducted diamond drilling. 1984-1987: St. Joe Canada Incorporated conducted geological mapping, sampling, geophysical surveys, and diamond drilling.
Province: Superior
Subprovince: Wabigoon
Terrane: Western Wabigoon
Belt: Eagle-Wabigoon-Manitou
Geological Age: Precambrian
| Rock Type | Rank | Composition | Texture | Relationship | Mylonite/Fault Gouge/Pseudotachylite | 1 | Shear Zone | Contains |
|---|---|---|---|---|
| Vein | 2 | Contains |
Feb 23, 2010 (C Ravnaas) - Frenchman Island is mostly underlain by a subvolcanic intrusion, situated within the Upper Manitou Lake Group, consisting of massive microgranodiorite porphyry and micro quartz-diorite porphyry, and flanked by intermediate lapilli-tuff and tuff-breccia on the east side of the island. The granodiorite is intruded by numerous felsite and quartz-feldspar porphyry dikes. A north-trending crossfault extends across the southwest end of the island, which is situated on the southeast limb of the Manitou Anticline, and 2.4 km northwest of the Manitou Straits Fault.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Chalcopyrite | Economic | Ore | ||||
| 10 | Gold | Economic | Ore | ||||
| 15 | Pyrite | Economic | Ore |
Feb 23, 2010 (C Ravnaas) - The "St. Joe Occurrence" (French Island Central) on claim K.594263, is located on the east side of Frenchman Island, and consists of a strong, 15 m to 23 m wide shear zone striking 038V30 0 SE within intermediate tuffs. The host rocks arechloritic, sericitic, carbonatized (calcite, iron carbonate), and rusty brown, containing 2-10% disseminated pyrite. The shear zone hosts a stockwork of quartz veins of variable thicknesses containing iron carbonate and Part - Geology of the Manitou-Stormy lakes area Publication Number:
ARV42-04.001
Page: 31-32
Date: 1998 Author: Thomson J.E. Publisher Name: Ontario Dept. of Mines Location: Mono - Gold deposits of the Kenora-Fort Frances area, districts of Kenora and Rainy River Publication Number:
MDC016
Page: 17
Date: 1976 Author: Beard R.C., Garratt G.L. Publisher Name: Ontario Division of Mines Location: MonoMap - Geology of the Upper Manitou Lake area, District of Kenora Publication Number:
R189
Page: 63-64
Date: 1979 Author: Blackburn C.E. Publisher Name: Ontario Geological Survey Location: Mono - Feasibility of small scale gold mining in northwestern Ontario (parts of the districts of Kenora, Rainy River, and Thunder Bay), volume 1, text, volume 2, appendices Publication Number:
OFR5332
Page: 36-37
Date: 1981 Author: Neilson J.N., Bray R.C.E. Publisher Name: Ontario Geological Survey Location: Mono - Geology, gold mineralization and property visits in the area investigated by the Dryden-Ignace economic geologist, 1984-1987 Publication Number:
OFR5723
Page: 200-201
Date: 1989 Author: Parker J.R. Publisher Name: Ontario Geological Survey Location: We are continuously updating our assessment file / technical report information. If you notice errors in the data, please
contact us. Please review our Terms of Use agreement for this data product. For detailed information regarding this mineral record please contact the Kenora Resident Geologist
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