Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42C08SW00050

Record: MDI42C08SW00050

General

Mineral Record Identification
Record Name(s)	Rusty Zone - 1933, Kremzar Rusty Zone - 1933
Related Record Type	Simple
Related Record(s)
Record Status	Occurrence
Date Created	1991-Jan-08
Date Last Modified	2022-Sep-16
Created By
Revised By

Commodities

Primary Commodities: Gold

Location

Township or Area: Finan

Latitude: 48° 18' 28.65" Longitude: -84° 25' 22.85"

UTM Zone: 16 Easting: 691077.42 Northing: 5353739.01 UTM Datum: NAD83

Resident Geologist District: Sault Ste. Marie

NTS Grid: 42C08SW

Point Location Description: Trenching in north-central SSM 3904

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. The mine access road is located approximately 2 km east of the junction of the new Goudreau Road and the old Goudreau Road.

Exploration History

1925-29: P. Kremzar/Algoma Exploration and Development Company - prospecting, trenching, sampling. 1981: Mattagami Lake Exploration Ltd. - airborne geophysics. 1981-90: Canamax Resources Incorporated - ground geophysical survey, mapping, stripping, channel sampling.(WP Finan.42).

Assessment Work on File

Assessment Work on File
Office File Number	Online Assessment File Identifier	Online Assessment File Directory
WP_Finan-42	20000018505	20000018505
FINAN 0038	42C08SW8737	42C08SW8737
FINAN 0017B1	42C08SW0253	42C08SW0253
FINAN 0044	42C08SW0058	42C08SW0058
FINAN 0049	42C08SW0225	42C08SW0225
FINAN 0046	42C08SW0249	42C08SW0249

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 deposit lies within the Northern 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 Northern Domain of the GLDZ is located immediately south of the Maskinonge Lake stock and is composed of brittle to brittle-ductile high-strain zones oriented at high angles to the 70 degree striking regional foliation These narrow brittle to ductile high-strain zones are up to tens of metres wide and may contain concordant quartz veins, and millimetre- to centimetre-scale brittle shears or fractures. The NE striking high-strain zones display sinistral, oblique-slip displacement, while the NW-striking shears display dextral, olblique-slip displacement.

Lithology

Lithology Data
Rock Type	Rank	Composition	Texture	Relationship
Gabbro	1	Gabbroic	Sheared	Host
Vein	2	Quartz		Host
Schist-Unsubdivided	3	Pyrrhotized		Host

Lithology Comments

Dec 07, 2005 (A Wilson) - The Rusty Zone is hosted by strongly deformed and altered mafic meta intrusive rocks. In the less deformed areas, the metaintrusive has a fine- to coarse-grained gabbroic texture of intergrown amphibole and plagioclase. Magnetite crystals are prominent in these areas. In strongly deformed and altered areas disseminated pyrrhotite predominates. The rocks are altered to a biotite-chlorite-(Fe-carbonate) pyrhotite schist in the vicinity of the mineralized zone. Mineralization is hosted in a series of quartz lenses which ae irregularly distributed along strike.

Mineralization

Mineralization and Alteration
Rank	Mineral Name	Class	Economic Mineral Type	Alteration Mineral Type	Alteration Ranking	Alteration Intensity	Alteration Style
1	Gold	Economic	Ore
1	Pyrrhotite	Economic	Gangue
	Biotite	Alteration		Biotitic	1	Medium	Replacement
	Chlorite	Alteration		Chloritic	2	Medium	Replacement

Mineralization Comments

Dec 07, 2005 (A Wilson) - Channel sampling in 1987 yielded erratic gold values. One sample of 0.35 oz/t Au across 0.8 feet, upon reblasting gave 2.43 oz/t Au and a sample of 0.37 oz/t Au across 1foot upon reblasting gave a value of 0.95 oz/t Au.

Mineral Record Details

Classification
Rank	Classification
1	Epithermal

Characteristics
Rank	Characteristic
1	Sheared

Mineral Zones - Size and Shape

Rank: 1 Structure Type: Shear

Zone Name: Detour Lake - Rank 1
Shape	Length	Thickness	Depth	Strike	Dip	Plunge	Trend	Age	Reference
Unknown	43

Site Visit Information

Date: Oct 30, 2000

Geologist: A Wilson

Notes: The Rusty Zone may represent the northern extension of the No. 8 Zone. Several oreintations of narrow, ductile high-strain zones occur at the Rusty Zone. Outside of these zones, the rocks are brittlely fractured, and relatively undeformed. The brittle fracture orientations mimic the directions of the ductile deformation zones

References

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.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Goudreau gold area, District of Algoma, Ontario

Publication Number: ARM40E Scale: 1:31,680 Date: 1997

Author: Moore E.S.

Publisher Name: Ontario Dept. of Mines

Location:

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

Publication Number: ARM49G Scale: 1:31,680 Date: 1997

Author: Bruce E.L.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Precambrian geology, Finan Township

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

Author: Sage R.P.