Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52J02SE00012

Record: MDI52J02SE00012

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Squash Lake Area

Latitude: 50° 1' 33.67"    Longitude: -90° 41' 6.55"

UTM Zone: 15    Easting: 665801   Northing: 5544091    UTM Datum: NAD83

Resident Geologist District: Kenora

NTS Grid: 52J02SE

Point Location Description: Adit location from assessment report 20000007209

Location Method: Based on Assessment

Access Description: The site is accessible in winter and summer by light aircraft. Float equipped aircraft should be aware of several reefs in the area. Boats and snowmobiles can access the lake from public and private launching points off Hwy. 599 from Cobb Bay to Trappers Point.

Exploration History

1934: Richelieu Gold Mines acquired 8 claims, comprising 400 acres, known as the Iron Duke group. A 2-compartment shaft was started in December 1934. By the end of 1934 it had reached a depth of 115 feet. Sinking continued in 1935 to a depth of 278 feet. Levels were established at 125 and 250 feet, and exploration by drifting was actively carried on to September 17, 1935, when the mine was closed down. The mining plant at this property includes two boilers, one of 70 and one of 150 horse-power. 1970: Selco Exploration Company Ltd. conducted an EM survey over a block of claims that included the Iron Duke showing and drilled 2 DDH totalling 223.1 m. 1984: C.J. Kuryliw mapped the Iron Duke showing and surrounding claims as part of an exploration program on East Bay of Sturgeon Lake. The claims were mapped at 1inch to 200 feet scale and a report on the geology of the block was written. 1986: Mistango Consolidated Resources Ltd. drilled two holes totalling 155.1 m on the Iron Duke showing. 1990: 007 Precious Metals Inc. carried out mapping and drilled 1 DDH totalling 175 m. 1995-96: Equator Mining Corp. carried out prospecting, stripping, sampling, and VLF-EM surveys. 2011-12: Pacific Iron Ore Corp. carried out prospecting and sampling.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Sturgeon Lake

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (R Tuomi) - The Iron Duke claims and showing are located over a strong east trending fault in East Bay. This fault predates the intrusion of the south-east nose of the Lewis Lake batholith and is exposed in an adit on the Iron Duke showing. The fault is marked by a fault breccia on the hanging wall to the south and a 20 foot thick white quartz vein on the footwall (Kuryliw 1984).

Lithology

Lithology Comments

Dec 07, 2005 (R Tuomi) - OTHER ASSOCIATED ROCK TYPES: metabasalt, graphitic sediments, Feldspar porphyro-, magnetite-pyrite, crystic metabasalt, iron formation.

Apr 29, 2020 (Therese Pettigrew) - The Iron Duke Group is underlain by a tuffaceous assemblage consisting of siliceous felsic tuff, chert beds and minor black (non-graphitic) shale. A felsite dyke cuts the assemblage at one location. Pyrite is present in most outcrops on the claims (Assessment report 52J02SE8657). The Iron Duke Claim group is located over the strong east-west fault in East Bay. This fault predates the intrusion of the southeast nose of the Lewis Lake batholith. This east-west fault is readily recognizable in the old Iron Duke adit. It is marked by a fault-breccia zone at its hanging wall to the south and a 20 foot thick milky white quartz vein on its footwall. The white quartz vein contains 10 - 20% massive pyrite. South of the fault the cherty felsic sediments strike east-west and dip about 80 degrees southwards. North of the fault (which has a 57 degree dip to the south) the sediments form a bow-fold. To the west of the adit the sediments north of the fault trend northeasterly and to the east of the adit they trend southeasterly. In both cases the northerly sediment trends are cut by the fault (Assessment report 52J02SE8659).

Mineralization

Mineralization Comments

Dec 07, 2005 (R Tuomi) - This property is part of a conductive geophysical anomaly has which has attracted a considerable amount of interest and exploration over the last 50 years. A number of programs have tested this east trending zone under East Bay of Sturgeon Lake and the only mineralization that in any way could be termed economic are two gold assays which approached 1 ppm gold, or 0.03 ounce per tonne gold.

Apr 29, 2020 (Therese Pettigrew) - DDH EB-90-1 assayed 0.025 oz/t Au over 3.5 feet (0.86 g/t Au over 1.07 m) from calcite veins with pyrite (Assessment report 52J02SE8653). Sample B-16 collected in 1986 returned 558 ppb Au from a shear zone (Assessment report 52J02SE8657). Samples collected in 1995 from the east wall of the adit range from 170 ppb Au to 7.2 g/t Au (Assessment report 52J02SE0010).

Mineral Record Details

References

Part - Mines of Ontario in 1935

Publication Number: ARV45-01.003 Scale:     Date: 1997

Author: Sinclair D.G., Keeley E.C., Cooper D.F., Weir E.B., Webster A.R.

Publisher Name: Ontario Dept. of Mines

Location:

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For detailed information regarding this mineral record please contact the Kenora Resident Geologist District Office