Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI53B14SE00004

Record: MDI53B14SE00004

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Keeyask Lake Area

Latitude: 52° 52' 38.61"    Longitude: -91° 4' 31.85"

UTM Zone: 15    Easting: 629512   Northing: 5860366    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 53B14SE

Point Location Description: DDH 88-14 location from Assessment report 53B14SE0002

Location Method: Conversion from MDI

Exploration History

1978: St. Joseph Explorations Ltd. conducted an EM and magnetometer survey. 1979: St. Joseph Explorations Ltd. drilled 1 DDH totalling 94.18 m. 1985: Moss Resources conducted mapping, trenching, sampling, and EM and magnetic surveys. 1987: Power Explorations Inc. carried out prospecting, trenching, sampling, and mapping. 1988: Power Explorations Inc. drilled 26 DDH totalling 4585.7 m. 1989: Guinness Gold Resources Ltd. drilled 24 DDH totalling 2450.5 m. 2002: Placer Dome Canada conducted lake sediment sampling.

Assessment Work on File

Geology

Province: Superior

Subprovince: Sachigo

Terrane: North Caribou

Geological Age: Mesoarchean  

Lithology

Mineralization

Mineralization Comments

Mar 20, 2008 (Mark Puumala) - The surface expression of this occurrence is documented by North (1987) and is discussed on p.34-35 by Piroshco, Breaks and Osmani (1989). Numerous occurrence grade-assays were reported from diamond drill holes advanced along the northeast-striking North Caribou River fault (see AFRI Nos. 53B14SE0002, 0003 and 0006, and 53B14NE0005).

Aug 16, 2019 (Therese Pettigrew) - There are two locations along the south bank of the North Caribou River where significant gold values have been obtained. At the first location, due south of Center Lake, a grab sample from an outcrop of quartz- and sericite-altered quartz porphyry, containing disseminated pyrite, gave a value of 2870 ppb gold. A drill hole collared at this location by St. Joseph Exploration Ltd. intersected 1.5 m of quartz porphyry containing 5-10% pyrite-tourmaline veins and 350 ppb Au. At the second location, approximately 3 km northeast of the first, a 1 m wide, foliated, quartz-rich zone in mafic volcanic rocks contains trace amounts of pyrite. A gold value of 2890 ppb over a 1 m width was obtained from this zone by Moss Resources Ltd. A drill hole collared at this location by St. Joseph Exploration Ltd. intersected 2.4 m of chert breccia with 60% pyrrhotite, 20% pyrite, traces of chalcopyrite, and 857 ppb gold; and a 1.5 m intersection of lean ironstone containing 1-2% pyrite/pyrrhotite and 2089 ppb gold (Piroshco et al., 1989). Drill holes RL-88-12, 13, and 14 returned intersections of 0.224 oz/t Au over 1.3 feet, 0.083 oz/t Au over 10.6 feet and 0.057 oz/t Au over 16.0 feet from a mineralized iron formation (Assessment report 53B14SE0002). Trench C (located at approximately NAD83 Zone 15 630010 m E, 5860546 m N) assayed up to 7.437 ppm Au over 0.33 m (Assessment report 53B14SE0004).

Mineral Record Details

References

Mono - Geology of the Eyapamikama Lake area

Publication Number: OFR5792 Scale:     Date: 1991

Author: Breaks F.W., Bartlett J.R.

Publisher Name: Ontario Geological Survey

Location:

Mono - The geology of gold prospects in the North Caribou Lake greenstone belt, District of Kenora, northwestern Ontario

Publication Number: OFR5698 Scale:     Date: 1989

Author: Piroshco D.W., Breaks F.W., Osmani I.A.

Publisher Name: Ontario Geological Survey

Location:

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For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office