Ontario Geological Survey
Permanent Link to this Record:
MDI52F07NW00009
| Record Name(s) | Frenchman Island - North - 1894 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Jan-24 |
| Date Last Modified | 2022-Jul-07 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Harper Lake Area
Latitude: 49° 23' 26.25" Longitude: -92° 47' 58.91"
UTM Zone: 15 Easting: 514535.779 Northing: 5470900.352 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F07NW
Point Location Description: Transfer
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 but was not located by the author. 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. (OGS OFR 5723, p. 200, 201; 1989)
Province: Superior
Subprovince: Wabigoon
Terrane: Western Wabigoon
Belt: Eagle-Wabigoon-Manitou
Geological Age: Precambrian
| Rock Type | Rank | Composition | Texture | Relationship | Granodiorite | 1 |
|---|---|---|---|---|
| Vein | 2 | quartz | Host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore |
Feb 23, 2010 (C Ravnaas) - The Frenchman Island North occurrence at the northeast end of the island on mining claim K.594270 consists of a stockwork of white quartz veins within a 0.3 m wide, northeast-striking breccia/shear zone. The microgranodiorite host rocks weather buff to pink, and are sericitized and carbonatized. Finely disseminated pyrite occurs throughout the wall rocks and quartz veins. St. Joe Canada Incorporated obtained anomalous gold assays from the zone, including three channel samples which assayed 0.05 ounce gold per ton across 2 m, 0.10 ounce gold per ton across 1 m, and 0.25 ounce gold per ton across 0.5 m (Assessment Files, Resident Geologist's Office, Kenora). A west-northwest-trending shear zone on claim K.594263 extends from the east shore of Frenchman Island on to claim K.594262, at the southwest end of the island. The shear zone hosts a 0.9 m wide quartz vein dipping 70 0 SW within fine-grained, pink, sericitized, and carbonatized microgranodiorite. Trenches and pits are situated along the entire strike length (160 m) of the quartz vein and shear zone, both of which terminate at an abrupt cliff along the edge of the north-trending crossfault extending across the island. The vein and sheared wall rock are weakly pyritic. Thomson (1934) reported that the vein had a variable width between l ft. and 8 ft. and that the wall rock contained disseminated chalcopyrite. Thomson (1934) took a chip sample across the quartz vein and wall rock, where the vein is terminated by the fault, which assayed 0.1 ounce gold per ton across 3 ft. Grab samples, taken by the author, from the pyritic wall rock and quartz vein assayed 85 ppb gold and trace, respectively. (OGS OFR 5723, p. 200, 201; 1989)
File - Resident Geologist files AF 52F07SW U-16
Publication Number: Date: 1996
Author:
Publisher Name:
Location: Kenora RGP
Mono - Geology, gold mineralization and property visits in the area investigated by the Dryden-Ignace economic geologist, 1984-1987
Publication Number: OFR5723 Page: 200 Date: 1989
Author: Parker J.R.
Publisher Name: Ontario Geological Survey
Location:
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