Ontario Geological Survey
Permanent Link to this Record:
MDI53C14SW00021
| Record Name(s) | Northwind Outlet - 1971, Minorex - 1971 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1979-May-08 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Copper, Molybdenum
Secondary Commodities: Silver
Township or Area: Northwind Lake Area
Latitude: 52° 48' 55.22" Longitude: -93° 26' 38.66"
UTM Zone: 15 Easting: 470071.17 Northing: 5851821.18 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 53C14SW
Point Location Description: General
Location Method: Data Compilation
This occurrence is based on the results of grab samples reported by Ayres (1972).
Province: Superior
Subprovince: Sachigo
Terrane: North Caribou
Belt: Favourable Lake
Geological Age: Neoarchean
| Rock Type | Rank | Composition | Texture | Relationship | Intermediate lava flow-unsubdivided | 1 | Contains |
|---|---|---|---|---|
| Granitoid-Unsubdivided | 2 | Adjacent |
Nov 20, 2014 (Mark Puumala) - Ayres (1972) reports the occurrence of a 0.45 m wide disseminated pyrite and chalcopyrite mineralized, and molybdenum-bearing quartz vein on the south side of the outlet from Northwind Lake. The vein is hosted within intermediate metavolcanics, and is located immediately northwest of the contact with a granitic intrusion mapped by Ayres (1972) at the southeast margin of the Favourable Lake greenstone belt. Ayres (1972) also reports the nearby occurrence of disseminated chalcopyrite and pyrite in a concordant epidotized zone (up to several feet thick) in intermediate metavolcanics on the north side of the Northwind Lake outlet. Mapping by Ayres (1972) indicates that this zone is located adjacent to a small intrusion of porphyritic granite. Similar mineralization is reported by Ayres (1972) approximately 1.5 km to the northeast (MDI53C14SW00019). Foliation in the Northwind Lake outlet area was mapped by Ayres (1972) as having a general northeast strike with moderate (40 to 50 degree) dip to the northwest
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Molybdenite | Economic | Ore | ||||
| 1 | Pyrite | Economic | Gangue | ||||
| Epidote | Alteration | Epidotization | 1 | Unknown | Disseminated |
Nov 20, 2014 (Mark Puumala) - Grab sample assays of the quartz vein material reported by Ayres (1972) include 0.40% Cu and 0.17% Mo, while assays of 0.42% Cu and 0.15 oz/ton Ag were reported from the epidotized metavolcanics.
| Rank | Classification |
|---|---|
| 1 | Porphyry |
| Rank | Characteristic |
|---|---|
| 1 | Concordant |
| 2 | Vein |
Article - Northwind Lake area, District of Kenora (Patricia Portion)
Publication Number: MP049.001 Scale: Date: 1997
Author: Ayres L.D.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Map - Geological series, Northwind Lake area, District of Kenora (Patricia Portion)
Publication Number: P0756 Scale: 1:15,840 Date: 1972
Author: Ayres L.D.
Publisher Name: Ontario Division of Mines
Location:
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