Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42C07SE00044

Record: MDI42C07SE00044

General

Mineral Record Identification
Record Name(s) North Evans Creek Iron Range - 1909
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1991-Jan-08
Date Last Modified 2022-Sep-12
Created By
Revised By

Commodities

Primary Commodities: Iron



Location

Township or Area: Leclaire

Latitude: 48° 15' 47.15"    Longitude: -84° 43' 28.69"

UTM Zone: 16    Easting: 668862.07   Northing: 5348045.54    UTM Datum: NAD83

Resident Geologist District: Sault Ste. Marie

NTS Grid: 42C07SE

Point Location Description: Occurrence 3F map P.2636

Location Method: Conversion from MDI

Access Description: The occurrence is most easily accessed by travelling down the Mall Lake bush road (20 km east of the junction between highway 17 and the Dubreuilville highway) for approximately 10 km and then west by overland traverse for approximately 3 km.



Exploration History

1909-1910: prospecting. 1953-1954: Algoma Steel Corporation Limited - airborne EM survey, mapping, dip needle survey, trenching, 8 ddh (3442 ft).


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
Leclaire-0015-B1 42C07SE0607 42C07SE0607
Leclaire-0018-A1 42C07SE0602 42C07SE0602

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Michipicoten

Tectonic Assemblage: Catfish

Geological Age: Neoarchean   Geochronological Age: 2700MA   Geochron. Age Ref.: OFR 5888



Geology Comments

Dec 07, 2005 (A Wilson) - It is composed of three segments labelled Evans Creek 2, 3 and 4. Outcrop of the iron formation and enclosing rocks is rare. The three segments were likely once connected and occur at roughly the same stratigraphic position. Although it is not traceable to the west, it may be correlative with the Brant Iron Formation to the west. It has been suggested that it might be traced geophysically to relate to the Rutledge Iron Range to the east. The North Evans Creek Range occurs within the intermediate to mafic tuffs at the top of cycle tow mafic volcanism or at the base of immadture metasedimentary rocks of the Dore type. The North Evans Creek Iron Range is not a Michipicoten type iron formation.




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Magnetite Ironstone 1 Chert-Magnetite Facies Host

Lithology Comments

Dec 07, 2005 (A Wilson) - The iron formation is a banded chert-magnetite iron formation with rare graphitic seams. Pyrite or sulphide content is minor and siderite is absent.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1MagnetiteEconomicOre
1PyriteEconomicGangue

Mineralization Comments

Dec 07, 2005 (A Wilson) - A chip sample across the no. 4 section returned 13.9% Fe, 74.78% Si and 0.36% S. The no. 3 segment averaged values of 16.5% Fe and 63.6% Si. A 60 foot section of the no. 2 segment averaged values of 16.5% Fe and 62.8% Si. From the metallurgical work conducted it was established that the magnetite was fine-grained and would be difficult to concentrate.



Mineral Record Details

Classification
RankClassification            
1 Sedimentary
Characteristics
Rank Characteristic            
1 Stratiform

Mineral Zones - Size and Shape

Rank: 1       Structure Type: Contact

Zone Name: Detour Lake - Rank 1
Shape Length Thickness Depth Strike Dip Plunge Trend Age Reference
Regular 610 60 110 90 2700 MA OFR 5888

Rank: 1       Structure Type: Contact

Zone Name: Detour Lake - Rank 1
Shape Length Thickness Depth Strike Dip Plunge Trend Age Reference
Regular 1100 60 110 90 2700 MA OFR 5888

Rank: 1       Structure Type: Contact

Zone Name: Detour Lake - Rank 1
Shape Length Thickness Depth Strike Dip Plunge Trend Age Reference
Regular 610 38 90 90 2700 MA OFR 5888

References

File - Resident Geologist files Leclaire-0010, WP Esquega.33

Publication Number: Date:

Author:

Publisher Name:

Location: SSM RGP office


Map - Michipicoten area, Algoma District, Ontario

Publication Number: Map 1972 Scale: 1:63,360    Date: 1923

Author: Collins, W H; Thomson, E

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/107947


Map - Michipicoten area, compilation sheet, District of Algoma

Publication Number: P0184 Scale: 1:126,720    Date: 1997

Author: Goodwin A.M.

Publisher Name: Ontario Dept. of Mines

Location:


Map - Geological series, Precambrian geology, Leclaire Township, District of Algoma

Publication Number: P2636 Scale: 1:15,840    Date: 1985

Author: Sage R.P.

Publisher Name: Ontario Geological Survey

Location:


Book - Leclaire Township (unpublished GDIF)

Publication Number: GDIF Date: 1987

Author: Resident Geologist Staff

Publisher Name:

Location: Timmins RGP


Mono - Iron deposits of Ontario

Publication Number: MDC011 Page: 72-73  Date: 1968

Author: Shklanka R.

Publisher Name: Ontario Dept. of Mines

Location:


Mono - Wawa mineral deposits data base

Publication Number: OFR5775 Page: 242  Date: 1991

Author: Frey E.D., Stewart R.C.

Publisher Name: Ontario Geological Survey

Location:


MonoMap - Geology of Abotossaway, Corbiere, Leclaire and Musquash Townships and Part of Dunphy Township, District of Algoma

Publication Number: OFR5587 Page: 299-300  Date: 1993

Author: Sage R.P.

Publisher Name: Ontario Geological Survey

Location:


MonoMap - Geology of Michipicoten Greenstone Belt

Publication Number: OFR5888 Page: 52-54  Date: 1994

Author: Sage R.P.

Publisher Name: Ontario Geological Survey

Location:


Publication - Michipicoten Iron Ranges; Geological Survey of Canada, Memoir 147

Publication Number: GSC Memoir 147 Page: 98-100  Date: 1926

Author: Collins, W H; Quirke, T T; Thomson, E

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/100849


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For detailed information regarding this mineral record please contact the Sault Ste. Marie Resident Geologist District Office