Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52A05SE00024

Record: MDI52A05SE00024

General

Mineral Record Identification
Record Name(s) Big Bear - 1886
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1979-Aug-10
Date Last Modified 2022-Apr-26
Created By
Revised By

Commodities

Primary Commodities: Silver

Secondary Commodities: Zinc, Fluorite, Lead



Location

Township or Area: Paipoonge, Scoble

Latitude: 48° 19' 48.39"    Longitude: -89° 34' 21.53"

UTM Zone: 16    Easting: 309327   Northing: 5356190    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 52A05SE

Point Location Description: From AMIS adit location

Location Method: Data Compilation



Exploration History

1886: an adit was driven 6 m along an E-W vein. A test pit 6 m deep was sunk 30.5 m S of the adit on a quartz veinlet.


Geology

Province: Southern

Formation Group: Animikie Group

Geological Age: Paleoproterozoic  



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Mudstone 1 Shale Adjacent
Vein 2 Quartz And Calcite Host
Diabase 3 Diabase Sills

Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1SphaleriteEconomicOre
2GalenaEconomicOre
3PyriteEconomicOre
1CalciteEconomicGangue
2QuartzEconomicGangue
3FluoriteEconomicGangue

Mineralization Comments

Jan 29, 2018 (Therese Pettigrew) - The vein is exposed on both banks of a small stream about 183 m above its junction with Oliver Creek. The composite vein strikes north 83 degrees east and occupies a fracture zone, 0.6 m wide, in black, flat-lying Animikie shale. In this vicinity the shale is heavily drift covered, outcrops occurring only along the banks of the creeks. The gangue minerals observed on the dumps are, in order of abundance, calcite, colourless and amethystine quartz, green and purple fluorite. The usual metallic minerals including sphalerite, galena, and pyrite occur. Samples of ore obtained from the outcrop were claimed to have assayed 8 to 124 opt Ag (Tanton, 1931).



Mineral Record Details

Classification
RankClassification            
1 Vein
Characteristics
Rank Characteristic            
1 Vein

References

Mono - Silver cobalt calcite vein deposits of Ontario

Publication Number: MDC010 Page: 77  Date: 1968

Author: Sergiades A.O.

Publisher Name: Ontario Dept. of Mines

Location:


Publication - Fort William and Port Arthur, and Thunder Cape Map-area, Thunder Bay District, Ontario; Geological Survey of Canada, Memoir 167

Publication Number: GSC Memoir 167 Page: 137-138  Date: 1931

Author: Tanton, T.L.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/100799


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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office