Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52J02SW00027

Record: MDI52J02SW00027

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Silver

Location

Township or Area: Fourbay Lake Area

Latitude: 50° 1' 40.74"    Longitude: -90° 47' 53.18"

UTM Zone: 15    Easting: 657705   Northing: 5544064.99    UTM Datum: NAD83

Resident Geologist District: Kenora

NTS Grid: 52J02SW

Point Location Description: Map in assessment report 52J02SW0004

Location Method: Based on Assessment

Access Description: A forestry road, the Six Mile road, is located approximately 0.8 km south of the Sturgeon River rapids on Hwy. 599. Approximately 8 km south on the Six Mile Lake road a rough trail runs northeast to the west end of King Bay. This trail terminates at the Armstrong-Best deposit. Alternatively, light aircraft can land on the lake in summer and winter. Boat and snowmobile access is available from access points off Hwy 599 from Cobb Bay to Horizontal Bay.

Exploration History

1949: C.J. Ryan completed 10 diamond drill holes on a property on the north shore of King Bay near the west end of the bay. Several of the holes returned assays from 0.02 to 0.08 ounce gold per ton over widths of 0.2 to 0.85 m. 1980-1982: A. Best and G. Armstrong staked several claims to the west of the Ryan property. They drilled 14 holes, several of which gave better than 1 ounce gold per ton over economic widths. The property was optioned to Steep Rock Resources Inc. 1983: Steep Rock Resources Inc. assembled a block of claims on King Bay and North Bay of Sturgeon Lake. Over the next several years they drilled 45 holes at various locations within the property, at least 20 of which were located on the Armstrong-Best claims. 1984-1987: Steep Rock Resources Inc. sub-optioned parts of their claim block to Hudson Bay Exploration and Development Ltd. (1984), Falconbridge Nickel Ltd.(1986) and Almaden Resources Corp. (1987). Over 4 years the companies drilled 20 holes and did sampling and surface surveys over the claim blocks. 1990-1993: Armstrong and Best regained control most of the ground held by Steep Rock Resources Inc. Armstrong and Best carried out stripping and bulk sampling programs on both the original showing and the Mac-Read property 200 m to the north. Additional strike length was added to both properties by this work. 1993: A. Best and G. Armstrong drilled 7 DDH totalling 334.9 m. 1997: Redbird Gold Corp. drilled 3 DDH totalling 240 m.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Sturgeon Lake

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (R Tuomi) - The most recent mapping to deal with the geology around the Armstrong-Best deposit and the west end of King Bay is that of Robinson (1992). This summary is taken from his report and observations by the author in 1992. The quartz veins on the Armstrong-Best prospect are hosted in east trending, south facing, steeply dipping, pillowed mafic metavolcanics of the Fourbay Cycle of Sturgeon Lake (Robinson,1992). The mafic metavolcanics, which host the prospects, are chloritized, locally sheared and conbonatized. Thin, intercalated lenses of felsic tuff and wacke are found in the section that has been intruded by blue to black quartz-carbonate veins mineralized by 2% to 40 % pyrite, pyrrhotite, chalcopyrite, galena and visible gold in a gangue of ankerite, calcite and sericitic quartz porphyry fragments. Recent stripping has revealed an eastern addition to strike length. Shear terminated narrow quartz veins returned multi-ounce gold assays in sections which contain from 5 to 50 per cent sulphides.

Lithology

Mineralization

Mineralization Comments

Mar 30, 2020 (Therese Pettigrew) - Sample 9470 returned 16.056 oz/t Au (550.4 g/t Au). Sample 9469 returned 12.188 oz/t Au (417.8 g/t Au). Sample 9468 returned 5.316 oz/t Au (182.2 g/t Au) (Assessment report 52J02SW0005). DDH KBN97-1 returned 2.945 g/t Au over 1 m. DDH KBN97-2 assayed up to 1.4 g/t Au over 1 m and 1.29 g/t Au over 0.36 m. DDH KBN97-3 returned 3.06 g/t Au over 1.6 m (Assessment report 52J02SW2001). DDH KB-1 returned up to 137.2 g/t Au over 0.40 m. DDH KB-4 returned up to 61.8 g/t Au over 6.70 m (Assessment report 52J02SW0004).

Mineral Record Details

References

Article - Sioux Lookout Resident Geologist's District-1991

Publication Number: MP158.004 Page: 81-84  Date: 1997

Author: Janes D.A., Seim G.Wm., Storey C.C.

Publisher Name: Ontario Geological Survey

Location:

Article - 1981 report of the Sioux Lookout Resident Geologist

Publication Number: MP101.003 Page: 34, 43  Date: 1997

Author: Janes D.A., Huggins R.B.

Publisher Name: Ontario Geological Survey

Location:

Article - 1982 report of the Sioux Lookout Resident Geologist

Publication Number: MP107.003 Page: 34, 43  Date: 1997

Author: Janes D.A., Huggins R.B.

Publisher Name: Ontario Geological Survey

Location:

MonoMap - Geology of the Six Mile Lake area

Publication Number: OFR5838 Date: 1992

Author: Robinson D.J.

Publisher Name: Ontario Geological Survey

Location:

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