Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42E11NE00009

Record: MDI42E11NE00009

General

Mineral Record Identification
Record Name(s) T. Johansen-Errington Occurrence - 9999, T.-Errington Johansen - 1991
Related Record Type Simple
Related Record(s)
Record Status Discretionary Occurrence
Date Created 1991-Jan-08
Date Last Modified 2022-Sep-27
Created By
Revised By

Commodities

Primary Commodities: Gold



Location

Township or Area: Errington

Latitude: 49° 40' 34.18"    Longitude: -87° 1' 29.76"

UTM Zone: 16    Easting: 498201.234   Northing: 5502626.105    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 42E11NE

Point Location Description: Goldfields Road.

Location Method: Conversion from MDI

Access Description: The occurrence is located in south central Errington Township. Travel approximately 1.2 km south on Goldfields Road from Highway 11 to a blazed trail on the west side of Goldfields Road. Proceed less than 200 m west to the occurrence.



Exploration History

1984: T. Johansen staked claim TB784874 to cover the occurrence. The claim is bounded to the north, east, and west by the Tombill Main Group of patented claims.


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
W8504-00584 42E15SW5018 42E15SW5018
W8504-00583 42E15SW5017 42E15SW5017
W8504-00582 42E15SW5016 42E15SW5016

Geology

Province: Superior

Geological Age: Archean  



Geology Comments

Dec 07, 2005 (B Nelson) - The T-Johansen-Errington occurrence is underlain by a turbidite-wacke-siltstone sequence. The occurrence is located 1.2 km south of the Bankfield-Tombill Fault, a major dextral strike-slip (transcurrent) fault. Pye (1951) noted that the metasediments young to the north. Wackes host sulphide and gold mineralized quartz-carbonate veins associated with a narrow fault zone. Gold, pyrite, arsenopyrite, specularite and tourmaline occur in the veins. The zone is silicified, carbonatized and sericitized, and hosts arsenopyrite. Foliation of the wackes strikes 265 degrees. Two prominent vein sets were noted. The main set is parallel to the fault and regional foliation and the second set strikes 240 degrees. The north side of the fault is not exposed. A vitreous, dark grey to white, discontinuous quartz vein, conformable to foliation, hosted two samples of visible gold.




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Sandstone 1 Wacke Host
Vein 2 Quartz-Carbonate Host
Siltstone 3 Near

Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1ArsenopyriteEconomicOre
2GoldEconomicOre
3PyriteEconomicOre
4SpeculariteEconomicOre
1QuartzEconomicGangue
QuartzAlterationSilicification1
CarbonateAlterationCarbonatization2
SericiteAlterationSericitization3

Mineralization Comments

Dec 07, 2005 (B Nelson) - Gold, pyrite, arsenopyrite, specularite and tourmaline occur in the veins. A vitreous, dark grey to white, discontinuous quartz vein, conformable to foliation, hosted two samples of visible gold. The Beardmore-Geraldton Economic Geologist's samples returned values <0.01 oz/ton Au.



Mineral Record Details

Site Visit Information

Date: Jan 03, 1997

Geologist: B Nelson

Notes: The Beardmore-Geraldton Economic Geologist visited the occurrence July 18, 1985.



References

Map - Little Long Lac gold area, District of Thunder Bay, Ontario

Publication Number: ARM44D Scale: 1:31,680    Date: 1997

Author: Bruce E.L.

Publisher Name: Ontario Dept. of Mines

Location:


Map - Township of Errington, District of Thunder Bay, Ontario

Publication Number: M1951-07 Scale: 1:12,000    Date: 1997

Author: Horwood H.C., Pye E.G.

Publisher Name: Ontario Dept. of Mines

Location:


Map - Tashota-Geraldton sheet, geological compilation series, Thunder Bay and Cochrane districts

Publication Number: M2102 Date: 1997

Author: Pye E.G., Harris F.R., Fenwick K.G., Baillie J.

Publisher Name: Ontario Dept. of Mines

Location:


Part - Geology of Errington Township, Little Long Lac area

Publication Number: ARV60-06 Date: 1997

Author: Pye E.G.

Publisher Name: Ontario Dept. of Mines

Location:


Mono - Gold occurrences, prospects, and deposits of the Beardmore-Geraldton area, districts of Thunder Bay and Cochrane

Publication Number: OFR5630 Date: 1986

Author: Mason J.K., White G.D.

Publisher Name: Ontario Geological Survey

Location:


File - Resident Geologist Mineral Deposit Files

Publication Number: Min Dep Date:

Author:

Publisher Name:

Location: Thunder Bay RGP


Part - Geology of Errington Township, Little Long Lac area

Publication Number: ARV60-06 Date: 1997

Author: Pye E.G.

Publisher Name: Ontario Dept. of Mines

Location:


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