Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42E12NE00004

Record: MDI42E12NE00004

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Arsenic

Location

Township or Area: Vincent

Latitude: 49° 38' 5.46"    Longitude: -87° 43' 7.97"

UTM Zone: 16    Easting: 448091   Northing: 5498281    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 42E12NE

Point Location Description: Diamond-drill holes and trenches from assessment file 42E12NE0239

Location Method: Data Compilation

Access Description: The property is located in north central Vincent Township. The property can be reached from Highway 11 by following overgrown lumber roads. There are no bridges across the Blackwater River, but there are shallow patches which can be negotiated by a tractor.

Exploration History

1928: Claims held covering an iron formation unit. 1935-50: Limited work carried out on the property. 1951: Tombill Mines Ltd. carried out a program of surface work and diamond-drilling. The survey showed that gold occurred erratically throughout the property. Thirty-two holes were drilled by P.A.T. Mines. 1972-77: Tombill Mines conducted a VLF-EM and soil sampling survey. During March of 1974 and 1975, diamond-drilling was performed, based on the results of geophysical (VLF) and geochemical (soil, analysed for copper, silver and arsenic) surveys. By the end of February 1974, 5 diamond-drill holes had been completed. 1978-81: 14 holes were drilled by mid-February 1979, 5 of which intersected gold mineralization. 1981-82: G. Douglas staked three claims and conducted an EM-16 geophysical survey. 1983: Tombill (Craskie Mines Ltd) selected a portal site for a decline on Craskie leases. 1984: Craskie Mines Ltd diamond-drilled the north (chlorite) zone. The Vega option reverted back to the vendors. Terraquest Surveys conducted an air magnetic and VLF survey of the Vega and adjoining Ralph Lake claims. 1997: Harte Resources conducted a magnetometer survey, stripping, sampling, and drilled 4 DDH totalling 766.6 m. 2008: Ultra Uranium Corp. carried out stripping and trenching.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Beardmore-Geraldton

Geological Age: Archean  

Lithology

Lithology Comments

Oct 15, 2019 (B Nelson) - The Craskie-Vega property is underlain by metavolcanics which strike 075-090 degrees and dip steeply to the north, with the exception of the southwest corner where the rocks dip steeply to the south. Narrow banded ironstone units are interbedded with the metavolcanics throughout the sequence. They consist of sugary recrystallized chert alternating with magnetite. In places, pyrrhotite is a common constituent. Mineralization consists of abundant py with smaller amounts of mag, cp and gold. Gold mineralization occurs in several areas, the most important of which, on the Vega, are two parallel ironstone units which are about 30 m apart, strike at 085 degrees and dip 85 degrees north. They have been named the Vega #1 (south) and Vega #2 (north). The ironstone units are siliceous and brittle, and have been fractured. The fractures acted as conduits for intrusive bodies and mineralizing fluids, many of which contained secondary quartz, carrying gold. Replacement sulphides also contain gold values. On the Vega, the ironstones have an average width of 2-2.5 m. Surface sampling indicates an average gold content of 0.24 to 0.30 oz/ton Au. The ironstones have been traced for 610 m by approximately 100 old trenches and test pits dug by prospectors. Medium-grained, white, quartz-porphyry sills, 0.5-1.5 m wide, intrude many of the ironstones. Apparently, these are related to a small 'plug' 183 m x 305 m which straddles the eastern boundary of the property.

Mineralization

Mineralization Comments

Dec 07, 2005 (B Nelson) - The following are highlights of assays taken from the property: A diamond-drilling program conducted in 1952 by Tombill Mines Ltd. outlined 4 mineralized zones. WEST 'G' returned 0.17 oz/ton Au over 2.0 m. CENTRE 'G' returned 0.19 oz/ton Au over 2.1 m. EAST 'G' returned 0.18 oz/ton Au over 2.1 m. NORTH 'H' returned 0.25 oz/ton Au over 1.5 m. Sample 82-MVV-2 (Vega zone #1, Eldorado Pit #10) assayed 1.16 oz/ton Au.

Oct 15, 2019 (Therese Pettigrew) - Gold mineralization is associated with two persistent subparallel chert-magnetite-carbonate ironstones. The ironstones are 37.5 m apart and strike 75 and dip 85 north. Surface prospecting and diamond drilling have traced the ironstones 600 m along strike and they average 2.0-2.5 m wide. Arsenopyrite occurs in quantities up to 2 percent. Up to 20 percent magnetite has been noted in the ironstones. Pyrite occurs as euhedral crystals and as disseminations within siliceous chlorite schist. Pyrrhotite is fairly ubiquitous on the property as disseminated "blebs" and stringers mainly in diorite and quartz stringers (Mason et al., 1985). DDH 74-20 assayed 0.162 oz/t Au and 0.23 oz/t Ag over 1.2 feet and 0.172 oz/t Au and 0.32 oz/t Ag over 4.4 feet (Assessment report 42E12NE0219). The gold is commonly enriched in intensely altered rocks adjacent to or within quartz-carbonate veins and veinlets. The gold is coarse and does not appear to be homogeneously disseminated along the zones. The Vega No. 1 was excavated and exposed for a continual distance of 421.5 m. The average width of the Vega No. 1 is 4.6 feet (1.39 metres) with an average grade of 0.144 oz/ton (4.93 g/t Au). The Vega No. 2 lies approximately 75 to 100 feet north of the Vega No. 1 and it was excavated for a continual distance of 636.36 m. The average width of the zone is 7.04 feet (2.13 metres) with an average grade of 0.085 oz/ton (2.91 g/t Au). There is approximately a 2,300 feet gap between the Vega zones and Craskie zones. The Vega No. 1 and No. 2 zones are believed to be linked with the Craskie G and H zones respectively. However, this is not certain since deep 20-25 feet of overburden covers this approximate area. The Craskie G-Zone has been excavated for a distance of 1,400 feet (424.24 metres). The average width of the zone is 4.97 feet (1.51 metres) and the average grade is 0.19 oz/ton (6.6 g/t Au). (Assessment report 42E12NE0239).

Mineral Record Details

Site Visit Information

Date: Dec 30, 1996

Geologist: B Nelson

Notes: The Beardmore-Geraldton Economic Geologist visited the site in August, 1982.

Date: Jul 24, 2000

Geologist: B Nelson

Notes: The Beardmore-Geraldton Economic Geologist visited the site on August 1, 1984.

References

Map - Beardmore-Nezah gold area, District of Thunder Bay, Ontario

Publication Number: ARM37K Scale: 1:63,360    Date: 1998

Author: Langford G.B.

Publisher Name: Ontario Dept. of Mines

Location:

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

Publication Number: OFR5630 Page: 170-176  Date: 1986

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

Publisher Name: Ontario Geological Survey

Location:

Part - Geology of the Beardmore-Nezah gold area, District of Thunder Bay

Publication Number: ARV37-04.003 Page: 83-108  Date: 1998

Author: Langford G.B.

Publisher Name: Ontario Dept. of Mines

Location:

Article - McComber and Vincent townships, District of Thunder Bay

Publication Number: MP116.007 Page: 32-36  Date: 1997

Author: Carter M.W.

Publisher Name: Ontario Geological Survey

Location:

File - Resident Geologist Mineral Deposit Files

Publication Number: Min Dep Date:

Author:

Publisher Name:

Location: Thunder Bay RGP

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 - Geological series, Precambrian geology, Vincent Township, District of Thunder Bay

Publication Number: P2854 Scale: 1:15,840    Date: 1985

Author: Carter M.W.

Publisher Name: Ontario Geological Survey

Location:

Mono - Field guide to the Beardmore-Geraldton metasedimentary-metavolcanic belt

Publication Number: OFR5538 Page: 12-13  Date: 1985

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

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