Ontario Geological Survey
Permanent Link to this Record:
MDI52N04SW00340
| Record Name(s) | Wilmar Mines - Trench Occurrence - 1987 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1997-Jan-30 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Dome
Latitude: 51° 3' 49.29" Longitude: -93° 48' 46.49"
UTM Zone: 15 Easting: 443036.64 Northing: 5657222.005 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52N04SW
Point Location Description: Precise/TR
Location Method: Data Compilation
1927-28: Martin McNeely Mines incorporated, performs stripping, trenching and drilling.1934-36: Performs stripping, trenching, and drilling. 1944-46: Completed geological mapping, magnetometer surveys and drilling (totalling 10794.26 m by end of 1946). 1958: Wilmar Mines Ltd. is incorporated to take over property, jointly owned by McNeely Mines and Cochenour-Willans Gold Mines. 1960-71: Underground development of the Wilmar Mine started from the Cochenour mine 396.5 m level. Drift (totalling 1307 m) driven to Wilmar property. 48000 m of underground drilling completed by 1971.
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Red Lake
Geological Age: Archean
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
Dec 07, 2005 (K R Kettles) - The northern half of the Wilmar property is underlain by altered mafic flows, whereas the southern half is underlain by felsic metavolcanic flows and flow breccias. The units strike about N65 degs E and dip steeply south. On the basis of pillow packing stratigraphic tops are to the south. The Wilmar mineralized zones are found at or close to the contact between a silicified, felsic volcanic breccia and talc-chlorite-carbonate schist. The contact is thought to be a major fault zone. Rolls in the contact between the two rock sequences have been found to be an important guide to ore. Diorite, lamprophyre and diabase dikes/sills are present in all parts of the sequence. This occurrence contains gold mineralization in quartz stringers in volcanic breccia.
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Quartz | Stringers | Host |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Altered | Flows | Adjacent |
| Felsic lava flow-unsubdivided | 3 | Altered | Volcanic Breccia | Adjacent |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| Carbonate | Alteration | Carbonatization | 1 | ||||
| Silica | Alteration | Silicification | 2 |
Dec 07, 2005 (K R Kettles) - Gold occurs in quartz stringers in volcanic breccia and altered mafic volcanic flows. The quartz stringers were found to be erratic, and the gold content variable. Surface trenches on this occurrence also returned erratic gold values.
Dec 07, 2005 (K R Kettles) - The country rocks have been silicified and carbonatized.
MonoMap - Geology of Dome Township, District of Kenora
Publication Number: R045 Scale: Date: 1997
Author: Ferguson S.A.
Publisher Name: Ontario Dept. of Mines
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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