Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI53C14SW00025

Record: MDI53C14SW00025

General

Mineral Record Identification
Record Name(s) Big W - 1979, Twinpeaka Southeast - 1979
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

Commodities

Primary Commodities: Copper, Gold



Location

Township or Area: Northwind Lake Area

Latitude: 52° 48' 20.22"    Longitude: -93° 29' 18.68"

UTM Zone: 15    Easting: 467068.07   Northing: 5850759.35    UTM Datum: NAD83

Resident Geologist District: Red Lake

NTS Grid: 53C14SW

Point Location Description: General

Location Method: Data Compilation



Exploration History

This occurrence is based on the results of a grab sample reported by Ayres (1972).


Geology

Province: Superior

Subprovince: Sachigo

Terrane: North Caribou

Belt: Favourable Lake

Geological Age: Archean  



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Vein 1 Host
Intermediate lava flow-unsubdivided 2 Contains
Porphyry-unsubdivided 3 Near

Lithology Comments

Nov 21, 2014 (Mark Puumala) - Ayres (1972) describes this occurrence as consisting of disseminated pyrite and chalcopyrite in narrow quartz-carbonate lenses hosted by felsic to intermediate metavolcanics. Mapping by Ayres (1972) indicates that the occurrence is located immediately east of a north-striking feldspar porphyry dike. Foliation in the metavolcanics is indicated to be oriented approximately 175/60.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1ChalcopyriteEconomicOre
2PyriteEconomicOre

Mineralization Comments

Nov 21, 2014 (Mark Puumala) - Ayres (1972) reported grab sample assays of up to 0.02 oz/ton Au and 0.28% Cu.



Mineral Record Details

Classification
RankClassification            
1 Vein (Polymetallic)
Characteristics
Rank Characteristic            
1 Vein

References

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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Ministry Contact Information

For detailed information regarding this mineral record please contact the Red Lake Resident Geologist District Office