Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42D15NW00002

Record: MDI42D15NW00002

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Silver, Copper, Lead, Zinc, Molybdenum

Location

Township or Area: Santoy Lake Area

Latitude: 48° 53' 39.78"    Longitude: -86° 59' 44.2"

UTM Zone: 16    Easting: 500321.81   Northing: 5415714.95    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 42D14NE, 42D15NW

Point Location Description: Shaft

Location Method: Field Visit

Access Description: The prospect is located approximately 4.4 km north of Highway 17 at a point about 15.5 km east of Terrace Bay. It is found on the north west side of a small, unnamed lake (claims 614674 to 614677 inclusive, claim map G-612, Santoy Lake). Access may be gained by aircraft to a small, unnamed lake and then 150 m west to the showing. A walking trail leads north from the Empress Mine road.

Exploration History

1898: Trenching (72.9 m), shaft sinking (16.16 m), minesite construction; Jackfish Bay Syndicate Mining Company Ltd. 1900: Shaft deepened to 35.7 m; Jackfish Bay Syndicate Mining Company Ltd. 1901: Shaft deepened to 37.06 m, crosscut initiated at 36.14 m extended for 27 m, shaft development discontinued, surface stripping; Jackfish Bay Syndicate Mining Company Ltd. The surface work resulted in the discovery of the Lizard Vein reported to contain considerable quantities of copper and pyrite and to have assayed good Au and Ag values. 1923: Stripping and trenching; F. Campbell. 1929: Channel sampling; Bennet-Pacaud Mines Ltd. 1934-1936: Jackfish Bay Syndicate Mining Company Ltd. became defunct. Property acquired by Valora Gold Exploration Company Limited and subsequently surrendered to the crown in 1936. 1951: 56 days of unspecified work; W. Siville. 1954-1973: Occurrence was restaked several times by various parties, but no work was recorded. 1973: Ground geophysical survey (EM and MAG); F. Merryth (?). Ten anomalies were defined but no further work was conducted. 1974-1982: Occurrence was restaked several times by various parties, but no work was recorded. 1983: Ground and airborne geophysical surveys (EM, MAG), geological mapping, trenching, prospecting and diamond drilling (4 holes); Micham Exploration Inc. 1984: Property examination and lithogeochemical sampling; SH Resident Geologist staff (OGS). 1995: Stripping, trenching, sampling and prospecting; prospectors G. Daniels, J. Ferguson and A. Ferguson. 2000: Cameco Gold Inc. conducted sampling, a magnetometric survey. 2011: Helion Exploration conducted sampling. 2013: Prospectors A. Onchulenko, P. Gehrels, and B. Kuzmich conducted sampling.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Schreiber-Hemlo

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (D McKay) - Much of the south of the property is underlain by chloritized hornblende-garnet schists and the north by felsic metavolcanic rocks, which strike northwest-southeast. Several felsite dikes have been recorded, striking in the same direction. The rocks dip, on average 80 to the south-southwest. Dadson (1983) noted that: The deposit consists of at least two subparallel quartz vein systems mineralized with pyrite and molybdenite. Host rocks were a series of massive and/or foliated mafic volcanics mineralized with disseminated euhedral pyrite. The extension of the vein system was found to occur across the lake immediately to the east (approximately 365 m in strike length). Simunovic (1984) stated that the Ursa Major geology consisted predominantly of a series of intercalated mafic pyroclastics and metavolcanic flows. Two separate and narrow units of argillaceous metasediments were intersected. Pyrrhotite an pyrite were encountered with sections of massive sulphides and up to 80% pyrite and pyrrhotite. A silicified shear zone with a section averaging 80% pyrrhotite was also encountered. Late stage intrusives such as quartz-feldspar porphyry and lamprophyre dikes were encountered, but were considered relatively insignificant.

Lithology

Lithology Comments

Dec 07, 2005 (D McKay) - Much of the south of the property is underlain by chloritized hornblende-garnet schists and the north by felsic metavolcanic rocks, which strike northwest-southeast. Several felsite dikes have been recorded, striking in the same direction. The rocks dip, on average 80 to the south-southwest.

Mar 14, 2016 (Therese Pettigrew) - The property is located within an intermediate to mafic volcanic sequence with minor intervolcanic sulfidic sediments, tuffs, and lamprophyre dykes, along with late- to syn-volcanic gabbroic intrusives. The property is characterized by local carbonate alteration and dilatational fractures which have been filled with polymetallic mineralization.

Mineralization

Mineralization Comments

Dec 07, 2005 (D McKay) - Minerals present in the schist are pyrite, chalcopyrites, galena, sphalerite and native silver. Gold occurs in a complex series of roughly parallel, easterly striking, quartz veins from several centimetres to 6.1 m in width. Bow et al. (1900, pp.85-86) described the Lizard vein: The 'Lizard' quartz vein, located 122 m north of the old main shaft, is the most highly mineralized zone found to date. It has an average thickness of 6.1 m and strikes N78 W. The vein contains chalcopyrite, pyrite and considerable quantities of galena. Assays of gold and silver area, supposedly, very good, although, no values are given. In addition to the Lizard vein, an east-west striking sulphide zone was observed in the No. 1 shaft area. The sulphide zone may represent a sulphide-facies iron formation. Both pyrite and pyrrhotite were observed in a carbonaceous metasedimentary rock. Samples of quartz veins and sulphide zones collected by Resident Geologist personnel in 1984 yielded assay results which varied up to 0.01 opt Au, 0.13 opt Ag, 465 ppm Cu, 28 ppm Pb and 192 ppm Zn. Grab sampling by G. Daniels, J. Ferguson and A. Ferguson in 1995 indicated gold values of up to 0.323 opt Au from the Lizard vein, and 0.420 opt Au from the No. 1 shaft at the Ursa Major property (G. Daniels, Prospector, personal communication, 1995). In addition both lead and zinc values are reported. Drilling by Micham Exploration Inc. intersected 1686 ppb Au over two feet on the Ursa Major property (Simunovic, 1984). The Northern Miner (November 17, 1983, p.23) described the Ursa Major Zone as returning grab samples as high as 14 opt Ag and averaging 4-5 opt Ag and 2% molybdenite. In a report by *Dadson (1983) assays from the Lizard vein were up to 0.036 opt Au and 13.36 opt Ag.

Mar 14, 2016 (Therese Pettigrew) - The 1995 prospecting program highlights include the recognition of four parallel trending quartz veins which range from 1 m up to 6.2 m in width, and returned grades of 0.478 oz/t Au, >10% Pb, 0.8% Cu, and 920 g/t Ag. A series of four major quartz veins cross the property with significant silver, molybdenum, and gold values which range in witch from 6.1m (Lizard vein/number 4 vein) to 1m. The Lizard vein hosts the number 2 shaft of the Ursa Major mine, and has a strike length of approximately 1700’. The 2011 sampling program included the following results: gold (2.5 g/t), silver (30.3 oz/t,18.4 oz/t, 15.2 oz/t, 10 oz/t), molybdenum (0.8%, and .78%), Bi (0.23%,0.17%,0 .11%), Cu (1.29%), Pb (7.2%,4.2%, 2.3%, 2.2%), and Ti (.43%, .31%) (AFRI 20000007533).

Alteration Comments

Dec 07, 2005 (D McKay) - Much of the south of the property is underlain by chloritized hornblende-garnet schists and the north by felsic metavolcanic rocks, which strike northwest-southeast.

Mineral Record Details

References

Book - George Cross Newsletter 83-11-07

Publication Number: G Cross News Page: 2, map  Date: 1983

Author:

Publisher Name:

Location:

Map - Nipigon-Schreiber, geological compilation series, Thunder Bay District

Publication Number: M2232 Scale: 1:253,440    Date: 1973

Author: Carter M.W., McIlwaine W.H., Wisbey P.A.

Publisher Name: Ontario Division of Mines

Location:

Map - Jackfish-Middleton area, Thunder Bay District

Publication Number: M2107 Date: 1967

Author: Walker J.W.R.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Copper, nickel, lead and zinc deposits in Ontario (revised to February, 1957)

Publication Number: MDC002 Page: 62  Date: 1957

Author: Thomson J.E., Ferguson S.A., Johnston W.G.Q., Pye E.G., Savage W.S., Thomson R.

Publisher Name: Ontario Dept. of Mines

Location:

MonoMap - Geology of the Jackfish-Middleton area, District of Thunder Bay

Publication Number: R050 Page: 35  Date: 1997

Author: Walker J.W.R.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Copper, nickel, lead and zinc deposits of Ontario

Publication Number: MDC012 Page: 321  Date: 1969

Author: Shklanka R.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.

Publication Number: OFR5951 Date: 1996

Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.

Publisher Name: Ontario Geological Survey

Location:

File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files

Publication Number: Min Dep Date:

Author:

Publisher Name:

Location: Thunder Bay RGP

Part - Mines of northwestern Ontario

Publication Number: ARV07-01.003 Page: 66  Date: 1998

Author: Bow J.A.

Publisher Name: Ontario Bureau of Mines

Location:

Part - Mines of northwestern Ontario

Publication Number: ARV08-01.004 Page: 83  Date: 1998

Author: Bow J.A.

Publisher Name: Ontario Bureau of Mines

Location:

Part - Mines of northwest Ontario, parts 1 and 2

Publication Number: ARV10.004 Page: 85-86  Date: 1998

Author: Bow J.A., Carter W.E.H.

Publisher Name: Ontario Bureau of Mines

Location:

Part - Mines of northwestern Ontario

Publication Number: ARV09.003 Page: 83  Date: 1998

Author: Bow J.A.

Publisher Name: Ontario Bureau of Mines

Location:

Part - Schreiber-Duck Lake area

Publication Number: ARV30-04.001 Page: 19  Date: 1998

Author: Hopkins P.E.

Publisher Name: Ontario Dept. of Mines

Location:

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