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Ontario Geological Survey
Permanent Link to this Record:
MDI53C07NW00002
| Record Name(s) | Interlac - 1977 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1977-Feb-15 |
| Date Last Modified | 2022-Jun-29 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Hewitt Lake Area
Latitude: 52° 28' 45.2" Longitude: -92° 52' 24.63"
UTM Zone: 15 Easting: 508590.76 Northing: 5814348.42 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 53C07NW
Point Location Description: General
Location Method: Conversion from MDI
1938: Trenching and assaying by Interlac Gold Mines.
Province: Superior
Subprovince: Berens River
Terrane: North Caribou
Domain: North Caribou Core
Belt: North Caribou
Geological Age: Neoarchean
May 24, 2007 (Mark Puumala) - The area geology is described in MDI53C07NW00025.
| Rock Type | Rank | Composition | Texture | Relationship | Terrigenous-Clastic-Unsubdivided | 1 | Greywacke | Near |
|---|---|---|---|---|
| Claystone | 2 | Slate | Near | |
| Ironstone-unsubdivided | 3 | Chert-Pyrrhotite Iron Formation | 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 | ||||
| 3 | Pyrrhotite | Economic | Ore | ||||
| 4 | Arsenopyrite | Economic | Ore |
May 24, 2007 (Mark Puumala) - The Interlac occurrence is located within a lithologic unit mapped by Wood (1980) as chert-pyrrhotite iron formation. Wood (1980) describes the occurrence as consisting of pyrrhotite, pyrite, arsenopyrite and chalcopyrite mineralization that is interbanded with fine-grained quartz that was interpreted to be recrystallized chert. Bateman (1939) indicates that the occurrence was exposed in two pits over an east-west strike length of approximately 6.1 m and a width of approximately 4.6 m. Wood (1980) reports complex folding of the mineralized horizon in the vicinity of the occurrence. Bateman (1939) reported assays of 0.3 oz/ton from a grab sample and 0.07 oz/ton from an approximately 2.1 m width chip sample. A later grab sample reported by Wood (1980) only contained trace quantities of gold, 0.02% Cu and 0.01% Ni.
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| Rank | Characteristic |
|---|---|
| 1 | Sheared |
File - Resident Geologist files AF RL 1970 53C/SE #4
Publication Number: Date: 1996
Author:
Publisher Name:
Location: Red Lake RGP
File - Resident Geologist files AF RL 1990 53C/SE #24
Publication Number: Date: 1996
Author:
Publisher Name:
Location: Red Lake RGP
Part - Geology of the North Spirit Lake area
Publication Number: ARV47-07.002 Page: 77 Date: 1997
Author: Bateman J.D.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Copper, nickel, lead and zinc deposits of Ontario
Publication Number: MDC012 Page: 192 Date: 1969
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of the Hewitt Lake area, District of Kenora (Patricia Portion)
Publication Number: R186 Date: 1981
Author: Wood J.
Publisher Name: Ontario Geological Survey
Location:
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For detailed information regarding this mineral record please contact the Red Lake Resident Geologist District Office