Ontario Geological Survey
Permanent Link to this Record:
MDI52E11NE00010
| Record Name(s) | Electrum Lake - 1985 |
|---|---|
| Related Record Type | Simple |
| Record Status | Discretionary Occurrence |
| Date Created | 1985-Aug-21 |
| Date Last Modified | 2022-Jan-05 |
| Created By | Q Unknown |
| Revised By | P Hinz |
Primary Commodities: Gold
Township or Area: Ewart
Latitude: 49° 43' 5.47" Longitude: -95° 5' 58.81"
UTM Zone: 15 Easting: 348650.626 Northing: 5509414.251 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52E11NE
Point Location Description: Occurrence located at northeast corner (number 1 post) of claim K23942.
Location Method: Conversion from MDI
Access Description: The occurrence can be accessed by travelling 2.8 km south of the junction of the Shoal Lake Road and Highway 17 to the High Lake Road. Take the High Lake Road east to the gate. The prospect is located approximately 166m (500 ft.) south of the west end of Electrum Lake and 400m south-southeast of the number 1 post of claim K23942.
1959-61: six diamond drill holes.
Province: Superior
Subprovince: Wabigoon
Belt: Lake of the Woods
Geological Age: Archean Geochronological Age: 2.728 GA Geochron. Age Ref.: SMITH 1987
Metamorphism Type: Contact
Metamorphism Grade: Amphibolite
Dec 07, 2005 (P Hinz) - The area is underlain by the High Lake porphyritic granodiorite stock, which intrudes Archean mafic metavolcanic rocks. The stock has been interpreted to be two intrusive phases (Davies 1965, Colvine 1979). Associated quartz veins and feldspar porphyry dikes are also observed.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Basalt | Adjacent |
|---|---|---|---|---|
| Vein | 2 | Contains |
Dec 07, 2005 (P Hinz) - (1965, p. 40) stated (quote) Basic lavas, probably all basaltic, have been recrystallized to massive hornblende-rich hornfelses. These in places are veined by carbonate, quartz and epidote, and in places are sheared. Biotite is abundant in the more schistose phases. Evidence of original pillows can be seen. Six holes were drilled over an estimated length of 270m (900 ft.) and mafic metavolcanic rocks were encountered in each hole, as were pyrite, pyrrhotite, chalcopyrite with quartz and carbonate. Only one hole contained any notable amount of gold. This single occurrence was of visible gold associated with pyrite and a thin quartz vein. The quartz porphyry dikes that occur in this area are only sparsely mineralized with pyrite and contain only traces of gold. (endquote) (Davies and Smith, 1988)
| 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 | ||||
| 20 | Pyrrhotite | Economic | Ore |
Map - Ewart-Forgie area, Kenora District
Publication Number: M2069 Scale: 1:31,680 Date: 1997
Author: Davies J.C.
Publisher Name: Ontario Dept. of Mines
MonoMap - Geology of High Lake-Rush Bay area, District of Kenora
Publication Number: R041 Scale: Date: 1997
Author: Davies J.C.
Publisher Name: Ontario Dept. of Mines
Mono - Gold deposits of Ontario, part 1, districts of Algoma, Cochrane, Kenora, Rainy River, and Thunder Bay
Publication Number: MDC013 Scale: Date: 1971
Author: Ferguson S.A., Groen H.A., Haynes R.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Mono - Gold deposits of the Kenora-Fort Frances area, districts of Kenora and Rainy River
Publication Number: MDC016 Scale: Date: 1976
Author: Beard R.C., Garratt G.L.
Publisher Name: Ontario Division of Mines
Compend - Report of activities, 1983, Regional and Resident Geologists
Publication Number: MP117 Scale: Date: 1984
Author: Kustra C.R.
Publisher Name: Ontario Geological Survey
Compend - Summary of field work and other activities, 1987
Publication Number: MP137 Scale: Date: 1987
Author: Barlow R.B., Cherry M.E., Colvine A.C., Dressler B.O., White O.L.
Publisher Name: Ontario Geological Survey
Thesis - Mineralization of the High Lake Pluton and Adjacent Country Rocks
Publication Number: PhD Thesis Scale: Date: 1976
Author: Pedora, J.M.
Publisher Name: University of Manitoba
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