Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42C08SW00168

Record: MDI42C08SW00168

General

Mineral Record Identification
Record Name(s)	McCarthy-Webb Iron Range - 1918
Related Record Type	Simple
Related Record(s)
Record Status	Discretionary Occurrence
Date Created	2000-Nov-03
Date Last Modified	2022-Apr-12
Created By
Revised By

Commodities

Primary Commodities: Iron

Location

Township or Area: Finan

Latitude: 48° 16' 50.47" Longitude: -84° 27' 26.5"

UTM Zone: 16 Easting: 688631.39 Northing: 5350623.02 UTM Datum: NAD83

Resident Geologist District: Sault Ste. Marie

NTS Grid: 42C08SW

Point Location Description: Iron formation on former claim SSM 2055

Location Method: Data Compilation

Access Description: Take the new Goudreau Road from Highway 516 (Dubreuilville Road) for a distance of approximately 20 km to the junction of the old Goudreau Road. Turn west and drive approximately 3 km to where the powerline meets the road. Park on the powerline and walk approximately 3 km along the powerline access road to the south side of Webb Lake. Alternatively, drive to west along the old Goudreau road from the Magino mine entrance to a parking spot overlooking Webb Lake. Traverse appoximately 500 m to the south.

Exploration History

There is no record of exploration work having been conducted on the property.

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Michipicoten

Tectonic Assemblage: Wawa

Geological Age: Neoarchean Geochronological Age: 2750 MA Geochron. Age Ref.: GOO VOL 1

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Geology Comments

Dec 07, 2005 (A Wilson) - The showing straddles the boundaries between the Northern and Southern Domains of the Goudreau Lake Deformation Zone. The GLDZ is up to 4.5 km in width and strikes in a gentle sigmoid-form for at least 30 km, subparallel to the stratigraphy and the regional foliation. In the immediate Goudreau-Lochalsh area, the GLDZ is coincident with a major contact between Cycle 2 and Cycle 3 volcanics. There is a strong structural control of the gold-bearing quartz veins systems within each of the 070-075 striking high-strain zones within the deformation zone. There are several parallel high-strain zones within the Webb Lake Stock. These zones are parallel to the regional schistosity in the area. Individual quartz veins are localized within narrow, secondary, brittle-ductile shear fractures.

Lithology

Lithology Data
Rock Type	Rank	Composition	Relationship
Ironstone-unsubdivided	1		Host
Quartz-Feldspar Porphyry	2	Quartz-Feldspar	Hanging Wall
Mafic pillowed flow	3	Pillowed	Footwall

Lithology Comments

Dec 07, 2005 (A Wilson) - The deposit was identified by the GSC in 1918. It was identifed by performing a dip-needle survey south of Webb Lake. They identifed stagnant pools of water that taste of iron salts and are depositing limonite on the bottom.

Mineralization

Mineralization and Alteration
Rank	Mineral Name	Class	Economic Mineral Type	Alteration Mineral Type	Alteration Ranking	Alteration Intensity	Alteration Style
1	Limonite	Economic	Ore

Mineral Record Details

Classification
Rank	Classification
1	Sedimentary

Characteristics
Rank	Characteristic
1	Unconsolidated

Mineral Zones - Size and Shape

Rank: 1 Structure Type: None

Zone Name: Detour Lake - Rank 1
Shape	Length	Thickness	Depth	Strike	Dip	Plunge	Trend	Age	Reference
Unknown	1219

References

Map - Missinaibi area, Algoma District, Ontario

Publication Number: Map 2050 Scale: 1:63,360 Date: 1926

Author: Collins, W H; Thomson, E

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/108179

MonoMap - Geology of Aguonie, Bird, Finan and Jacobson Townships, District of Algoma

Publication Number: OFR5588 Page: 128-129 Date: 1993

Author: Sage R.P.

Publisher Name: Ontario Geological Survey

Location:

Map - Precambrian geology, Finan Township

Publication Number: P3168 Scale: 1:15,840 Date: 1990

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: 111 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