Ontario Geological Survey
Permanent Link to this Record:
MDI52N04NW00002
| Record Name(s) | Murto Island - 1943 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1982-Aug-26 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: McDonough
Latitude: 51° 8' 19.09" Longitude: -93° 46' 3.98"
UTM Zone: 15 Easting: 446286.7 Northing: 5665522.03 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52N04NW
Point Location Description: N/A
Location Method: Conversion from MDI
1942: J. Humlin conducted prospecting. 1943: Property held by William Murto, who conducted prospecting, trenching, and stripping. 1956: W. Murto drilled three DDHs totalling 160.5 m. 1982: Gold Fields Mining Corp. conducted linecutting and VLF and mag ground geophysics. 1997: Rubicon Minerals Corp. conducted prospecting, geological mapping, and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.18224 | 52N04NW2001 | 52N04NW2001 |
| 2.5124 | 52N04NE0112 | 52N04NE0112 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Red Lake
Geological Age: Archean
Metamorphism Type: Regional
Metamorphism Grade: U. Greenschist
Dec 07, 2005 (K R Kettles) - GEOLOGICAL DESCRIPTION: The occurrence is underlain by variolitic pillowed flows. The pillow structures indicate that stratigraphic tops are to the northwest. The metavolcanics strike NE-SW and dip subvertically. Foliation is parallel to subparallel to the bedding. Narrow quartz porphyry dikes are present in the vicinity of the occurrrence. DEPOSIT DESCRIPTION: Quartz and quartz-carbonate veins containing minor amounts of galena, pyrrhotite and chalcopyrite occur in a shear zone which strikes NE-SW and dips steeply to the southeast.
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Quartz, Quartz-Carbonate | Contains |
|---|---|---|---|---|
| Mafic pillowed flow | 2 | Variolitic Pillowed Flows | Adjacent | |
| Mylonite/Fault Gouge/Pseudotachylite | 3 | Shear Zone | Host | |
| Quartz-Feldspar Porphyry | 4 | Quartz-Feldspar Porphyry | Porphyritic | Near |
Dec 07, 2005 (K R Kettles) - The occurrence is underlain by variolitic pillowed flows. The pillow structures indicate that stratigraphic tops are to the northwest. The metavolcanics strike NE-SW and dip subvertically. Foliation is parallel to subparallel to the bedding. Narrow quartz porphyry dikes are present in the vicinity of the occurrrence. Quartz and quartz-carbonate veins containing minor amounts of galena, pyrrhotite and chalcopyrite occur in a shear zone which strikes NE-SW and dips steeply to the southeast.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 2 | Galena | Economic | Ore | ||||
| 3 | Chalcopyrite | Economic | Ore | ||||
| 4 | Pyrrhotite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Carbonate | Economic | Gangue |
Dec 07, 2005 (K R Kettles) - Values of up to 0.02 oz/ton (0.69 g/tonne) Au. have been obtained from the quartz-carbonate veins. MDI1 DATA: GRADE: UP TO 0.018 OPT AU.
Dec 07, 2005 (K R Kettles) - No comments on alteration types in OFR 5558.
Map - Geological series, McDonough Township, District of Kenora (Patricia Portion)
Publication Number: P1240 Scale: 1:12,000 Date: 1977
Author: Pirie J., Sawitzky E.
Publisher Name: Ontario Geological Survey
Location:
Mono - Gold occurrences, prospects, and deposits of the Red Lake area, volumes 1 and 2
Publication Number: OFR5558 Scale: Date: 1987
Author: Durocher M.E., Burchell P.S., Andrews A.J.
Publisher Name: Ontario Geological Survey
Location:
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