Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42C08SW00172

Record: MDI42C08SW00172

General

Mineral Record Identification
Record Name(s)	Wilcox Pyrite Claims - 1914, Wilcox (Webb) Pyrite Claims - 1926
Related Record Type	Simple
Related Record(s)
Record Status	Occurrence
Date Created	2000-Nov-17
Date Last Modified	2022-Sep-08
Created By
Revised By

Commodities

Primary Commodities: Sulphur/Pyrite

Location

Township or Area: Jacobson

Latitude: 48° 18' 59.17" Longitude: -84° 23' 25.53"

UTM Zone: 16 Easting: 693461.45 Northing: 5354762.98 UTM Datum: NAD83

Resident Geologist District: Sault Ste. Marie

NTS Grid: 42C08SW

Point Location Description: Trenches in former SSM 1814

Location Method: Data Compilation

Access Description: Access is via an 18 km all-weather gravel road that turns off of highway 519 just west of the town of Dubreuilville. Dubreuilville is on highway 519, 44 km east of the junction of Highway 17 and 519. From the junction of the old and new Goudreau Road, drive east approximately 5.5 km to the north end of Pine Lake. The occurrence can be accessed by traversing north from the road for approximately 500 m.

Exploration History

1914: H. Hogg, T. Murphy, J. Webb and T. Wilcox - property acquisition. trenching 1914: Algoma Commercial Company - property examination.

Assessment Work on File

Assessment Work on File
Office File Number	Online Assessment File Identifier	Online Assessment File Directory
Jacobson-0022-A1	42C08SW0090	42C08SW0090
Jacobson-0035-E1	42C08SW0122	42C08SW0122

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Michipicoten

Tectonic Assemblage: Catfish

Geological Age: Neoarchean Geochronological Age: 2700 MA Geochron. Age Ref.: GOO VOL 1

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Geology Comments

Dec 07, 2005 (A Wilson) - The occurrence lies within the Eastern Domain 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 systms within each of the 070-075 striking high-strain zones within the deformation zone. The Eastern Domain of the GLDZ is 9 km long and 2 km wide and contains narrow brittle and brittle-ductile high-strain zones displaying dextral, oblique slip displacement. Mineral lineations at the Cline Lake area have a consistent shallow plunge to the east and become moderately to steeply plunging in the Godin Lake area. Within the eastern domain, high-strain zones (as well as laminated, quartz-tourmaline and/or quartz-Fe-carbonate veins, fractures and flesic porphyry dikes) are dominantly parallel or at low angles to the east-striking regional foliation. The eastern domain is truncated on the west by the NW-trending Maskinonge Lake Fault.

Lithology

Lithology Data
Rock Type	Rank	Composition	Texture	Relationship
Ironstone-unsubdivided	1			Host

Lithology Comments

Dec 07, 2005 (A Wilson) - The occurrence reportedly consists of narrow bands of folded iron formation and mafic metavolcanic rocks. The iron formation is reported to be folded into a westward pitching anticline. The northern band is considered to be the most prospective.

Mineralization

Mineralization and Alteration
Rank	Mineral Name	Class	Economic Mineral Type
1	Pyrite	Economic	Ore
2	Limonite	Economic	Ore
1	Pyrrhotite	Economic	Gangue

Mineral Record Details

Classification
Rank	Classification
1	Sedimentary

Characteristics
Rank	Characteristic
1	Layered

Mineral Zones - Size and Shape

Rank: 1 Structure Type: Fold

Zone Name: Detour Lake - Rank 1
Shape	Length	Thickness	Depth	Strike	Dip	Plunge	Trend	Age	Reference
Irregular	213	13

References

Folio - Jacobson Township, District of Algoma

Publication Number: GDIF111 Date: 1997

Author: Sault Ste Marie RGO

Publisher Name: Ontario Geological Survey

Location:

Map - Goudreau-Lochalsh area, District of Algoma, Ontario

Publication Number: ARM36B Scale: 1:63,360 Date: 1998

Author: Gledhill T.L., Collins W.H., Thomson E.