Ontario Geological Survey
Permanent Link to this Record:
MDI53C14SW00020
| Record Name(s) | Northwind - Northeast Bay - 1979 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1979-May-04 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Copper
Township or Area: Northwind Lake Area
Latitude: 52° 49' 22.22" Longitude: -93° 23' 58.67"
UTM Zone: 15 Easting: 473071.06 Northing: 5852637.93 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 53C14SW
Point Location Description: General
Location Method: Conversion from MDI
This occurrence is based on the results of a grab sample assay reported by Ayres (1972).
Province: Superior
Subprovince: Sachigo
Terrane: North Caribou
Belt: Favourable Lake
Geological Age: Neoarchean
| Rock Type | Rank | Composition | Texture | Relationship | Gabbroid-Unsubdivided | 1 | Contains |
|---|---|---|---|---|
| Granitoid-Unsubdivided | 2 | Near | ||
| Intermediate lava flow-unsubdivided | 3 | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Chalcopyrite | Economic | Ore | ||||
| 10 | Pyrite | Economic | Ore | ||||
| 15 | Pyrrhotite | Economic | Ore |
Nov 01, 2007 (Mark Puumala) - This discretionary occurrence is described by Ayres (1971) as consisting of up to 15% disseminated pyrrhotite, pyrite and minor chalcopyrite hosted within a gabbroic sill. The mineralization is reported to occur in intermittent bedrock exposures found in an area that that covers approximately 6 m by 15 m. Mapping by Ayres (1972) indicates that the mineralized intrusion strikes approximately west-northwest, and is hosted within a sequence of felsic to intermediate metavolcanics, immediately northeast of the contact with a granitic intrusion that forms the southern boundary of this portion of the Favourable Lake greenstone belt. Foliation is indicated by Ayres (1972) to be oriented 300/45 in the vicinity of the occurrence. A grab sample assay of 0.16% Cu was reported by Ayres (1972).
| Rank | Classification |
|---|---|
| 1 | Mafic-Ultramafic Intrusion |
| Rank | Characteristic |
|---|---|
| 1 | Disseminated |
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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