Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42E12NE00002

Record: MDI42E12NE00002

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Silver

Location

Township or Area: Leduc

Latitude: 49° 41' 16.93"    Longitude: -87° 37' 33.54"

UTM Zone: 16    Easting: 454848.203   Northing: 5504134.186    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 42E12NE

Point Location Description: Shaft; diamond drill holes.

Location Method: Conversion from MDI

Access Description: The property is located in southwestern Leduc Township and southeastern Walters Township, northeast of Nissiamkikam Lake. The property can be reached by travelling 6 km west of Jellico on Highway 11, then northwest on a winter road for about 1.7 km to the east side of Nissiamkikam Lake. The shaft is 400 m north and is reached by bush trail. The property is also accessible by fixed wing aircraft with floats to the northwest shore of Nissiamkikam Lake.

Exploration History

1934: Claim TB11800 was staked by Frank Miller for Dumond Mining and Exploration Ltd. Prospecting and surface dev't work was carried out. 1935: The claim was optioned to J.H.C. Waite, who conducted a surface exploration program and drilled one hole to a depth of 30.7 m. 1936: A 3 compartment shaft was sunk to 92 m and 2 levels established. 1936-37: Underground dev't and diamond drilling were done by Oremond Gold Mines Ltd. 1940: MacLeod-Cockshutt Gold Mining Ltd. drilled the property. 1949: Property was surveyed. 1950-63: Property was leased; lease was revoked; property staked 4 times with no work performed. 1963: Property was staked by Tom Young, who transferred the claim to Mario Martinuzzi. 1964: Stripping, trenching, test pitting and diamond drilling was performed by Dr. F. Van Orman and Dr. M. Stolove. 1966: Geological, mag and vertical loop EM surveys were conducted by J.M. Johnson for the above individuals. Assays around the shaft area were also reported. 1968: Claim was transferred to Solomon's Pillars Mines Limited, who dewatered the shaft, sampled the ore zone, conducted a geological survey and drilled six holes totalling 247.2 m. 1969: Claim cancelled and restaked. Canadian Nickel Co. Ltd. held all interests. 1969-75: Cdn Nickel Co. conducted a 26 hole diamond drill program. VLF, mag and geological surveys were also performed. 1986: Property is leased by the Canadian Nickel Company Limited (INCO). INCO and Pronto Exploration drilled a portion of the Solomon's Pillars Prospect in early 1986.

Assessment Work on File

Geology

Province: Superior

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (B Nelson) - The claim block is comprised primarily of an east-west striking band of steeply dipping Timiskaming sediments (greywacke, siltstone, argillite, silty quartzite) with an interbedded narrow horizon of conformable iron formation. To the N of the sediments occurs a narrow band of mafic volcanics. The sediments and volcanics have been intruded by a body of diorite which occurs in the NE corner of the claim block. Several N-S trending diabase dykes cut the area. The area forms part of the Wabigoon Belt of the Superior Province and the Early Precambrian rocks have been tightly folded along E-W axes. Well preserved primary sedimentary and volcanic features are used to determine the super position of strata. Other minor structures include small fractures, small scale ptygmatic folding, cleavage and jointing. Numerous small fractures, with minor displacements occur throughout the metasediments and iron formation, mainly cross-cutting the bedding. Folding on a small scale has imprinted a wavy nature into the bedding of the formations. Folding is post-injection of the quartz-carbonate veining. A shear zone up to 9.2 m wide occurs along the south side of the iron formation and offshoots were found to penetrate well into it. Numerous small white to pinkish-white quartz veins with minor carbonate occur throughout the metasediments and iron formation. They are parallel to and cross-cut bedding and are generally less than one inch in width, the majority being thin stringers. Larger veins up to 4 feet in width occur in the vicinity of the shaft. Many of the veins appear to be partially to totally recrystallized due to metamorphism. Two stages of veining may be present. The main iron formation unit is up to 24.5 m wide on the west boundary of the 4 claims. Replacement pyrite in a portion of the iron formation is noted 400 m west of the shaft and 37.5 m south of the present baseline. Therefore, the strike length of auriferous sulphides extends a minimum of 450 m.

Lithology

Lithology Comments

Dec 07, 2005 (B Nelson) - The greywackes are fine to medim-grained and dark to light grey. Bedding is indistinct to well-developed with beds varying in thickness from lamination size to less than one foot. Composition is variable which accounts for the banded appearance of much of the sequence. The iron formation is composed of a fine-grained, laminated to thinly bedded, intercalated sequence of dark red-brown to blood red hematite and jasper, dark steel grey magnetite and specular hematite, in varying proportions. Minor chert in varying amounts was present throughout the iron formation.

Mineralization

Mineralization Comments

Dec 07, 2005 (B Nelson) - Mineralization is primarily py and asp with several specks of cp and minor po, all of which occur adjacent to or within the iron formation. The py and asp are euhedral and are present in zones up to a maximum thickness of 1.3 m (in the vicinity of the shaft). Where extensive zones of sulphides occur, asp is greater in proportion than py by about two to one. The gold occurs in the asp and is very fine-grained. The highest gold assays obtained were from zones (pods and lenses) where asp is the most abundant. INCO's drill program in 1974-75 'implied a small ore zone of 100,000 tons of 0.25 oz/ton Au starting at the 100 foot vertical level' (Debicki, 1975). The shear zone has been observed to carry gold over a length of 563.88 m. Two DDH results were 0.34 oz/ton Au over 1.52 m and 0.16 oz/ton Au over 0.6 m. The best assay reported was 1.42 oz/ton Au. Samples taken by the Beardmore-Geraldton Economic Geologist in 1981 returned values including 0.76 oz/ton Au and 0.10 oz/ton Ag, 0.92 oz/ton Au, 0.14 oz/ton Ag, and 0.52 oz/ton Au.

Mineral Record Details

Site Visit Information

Date: Jan 20, 1997

Geologist: B Nelson

Notes: The Beardmore-Geraldton Economic Geologist visited the occurrence August 12, 1981, July of 1982, and July 10, 1985.

References

Map - Mineral deposits series, Ontario mineral potential, Longlac sheet, districts of Thunder Bay and Cochrane

Publication Number: P1527 Scale: 1:250,000    Date: 1978

Author: Springer J.S.

Publisher Name: Ontario Geological Survey

Location:

Map - Tashota-Geraldton sheet, geological compilation series, Thunder Bay and Cochrane districts

Publication Number: M2102 Date: 1997

Author: Pye E.G., Harris F.R., Fenwick K.G., Baillie J.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Walters and Leduc townships, Thunder Bay District

Publication Number: M2356 Scale: 1:31,680    Date: 1976

Author: Mackasey W.O.

Publisher Name: Ontario Division of Mines

Location:

Map - Thunder Bay data series, Nezah Lake area, Thunder Bay District

Publication Number: P2517 Scale: 1:15,840    Date: 1982

Author: Speed A.A.

Publisher Name: Ontario Geological Survey

Location:

MonoMap - Geology of Walters and Leduc townships, District of Thunder Bay

Publication Number: R149 Date: 1976

Author: Mackasey W.O.

Publisher Name: Ontario Division of Mines

Location:

Mono - Gold occurrences, prospects, and deposits of the Beardmore-Geraldton area, districts of Thunder Bay and Cochrane

Publication Number: OFR5630 Page: 531-538  Date: 1986

Author: Mason J.K., White G.D.

Publisher Name: Ontario Geological Survey

Location:

File - Resident Geologist Mineral Deposit Files

Publication Number: Min Dep Date:

Author:

Publisher Name:

Location: Thunder Bay RGP

Mono - Gold deposits of Ontario, part 1, districts of Algoma, Cochrane, Kenora, Rainy River, and Thunder Bay

Publication Number: MDC013 Date: 1971

Author: Ferguson S.A., Groen H.A., Haynes R.

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:

Part - Mines of Ontario in 1936

Publication Number: ARV46-01.003 Date: 1997

Author: Sinclair D.G., Tower W.O., Bayne A.S., 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 Thunder Bay North Resident Geologist District Office