Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42E11NW00003

Record: MDI42E11NW00003

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Copper, Zinc

Location

Township or Area: Legault

Latitude: 49° 43' 33.54"    Longitude: -87° 25' 41.08"

UTM Zone: 16    Easting: 469147   Northing: 5508253    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 42E11NW

Point Location Description: Diamond drill hole SB08-03 location from Assessment report 20000004143

Location Method: Data Compilation

Access Description: The occurrence is located in north central Legault Township, between Vezina Lake and Partridge Lake. The property can be reached by travelling east from Jellicoe on Trans Canada Highway 11 for 13 km and north on a secondary road for 3.2 km. The occurrence is located approximately 470 m northeast of the road.

Exploration History

1934: The property was staked by Robert Wells for Amie Zabiuk and by George McDaid. Surface work was performed on Zabiuk's claim. McDaid's was transferred to Robert Wells. 1935: Surface work was performed on both claims. 1936: The claims were surveyed. 1937: Oro Plata Mining Corporation Ltd. conducted a magnetic and EM survey. 1950: Property was restaked by W.H. Cranston. 1951: The claims were cancelled, then restaked by G. Bain. 1955: 77.5 days of assessment credit were earned before the claims were transferred to R.W. Potter. A 5 hole drill program was completed (395 m). 1966: The northeast claim was restaked by Donald Hurd as part of a 9 claim block. 1979: Property staked by Edward Romiuk. 1980: The claims were transferred to Dome Exploration Ltd. which conducted airborne mag and EM surveys. 1984: Both claims covering the occurrence were staked by F. Checkley. 1986: Canadian Gold Resources conducted an airborne magnetic and radiometric survey. 1990-92: F. Checkley carried out mapping, stripping, sampling, and magnetic and VLF-EM surveys. 1992: B. Nelson carried out stripping and sampling. 1993: Morning Dew Exploration Ltd. carried out geological mapping. 2002: F. Checkley carried out stripping and sampling. 20007: Kodiak Exploration Ltd. carried out prospecting and sampling. 2008: Kodiak Exploration Ltd. drilled 9 DDH totaling 2565 m. F. Checkley carried out prospecting and sampling. 2018: A. Onchulenko and P. Gehrels carried out prospecting and sampling.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Beardmore-Geraldton

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (B Nelson) - Legault Township is underlain dominantly by Early Precambrian (Archean) metasediments and metavolcanics that form part of the Beardmore-Geraldton belt. The metavolcanics are predominantly of mafic composition and include pillowed and amygdaloidal flows. Iron formation composed of magnetite, hematite, chert and jasper is associated with thin-bedded greywacke sandstone, siltstone, and argyllite at the greywacke-mafic flow contact trending east-west across the central part of the map area. A 450 m long elliptical-shaped granitic body of trondhjemite composition intrudes mafic flows on the southern boundary of Legault Township, 2.4 km west of Colter Township. Other felsic to mafic intrusions and dykes occur throughout the map area. Major stratigraphy units are steeply dipping and have an easterly strike. A moderate to well developed east-striking schistosity is present in all the Early Precambrian (Archean) strata.

Lithology

Mineralization

Mineralization Comments

Dec 07, 2005 (B Nelson) - Mineralization noted in 1955 drill logs consists of light to heavy pyrite and chalcopyrite in a zone of sheared greenstone with numerous quartz stringers.

Oct 15, 2019 (Therese Pettigrew) - The main zone strikes 240 degrees approximately and varies in width from 6 to 23 m along a 490 m strike length. The property geology consists of rusty, highly silicified, grey to dark green mafic metavolcanic host rocks crosscut by a series of east-trending quartz-breccia veins. The metavolcanic host rocks become almost cherty from intense silicification in places and typically contain 1% very fine, disseminated pyrite. On the eastern portion of the zone, the quartz is grey, recrystallized, associated with calcite, and exhibits a strong crack-seal texture. Rare sulphide mineralization occurs within the quartz. At one point along a 48 m north-trending trench, visible gold was found within brecciated portions of the quartz veins. A second stripped location (24 by 30 m), approximately 366 m to the west along strike, exhibits intense shearing with minor folding. Quartz typically occurs as darker coloured veinlets with 1 to 2% very fine, disseminated pyrite. Seams, 1 cm in size, of massive pyrite together with chalcopyrite and malachite stain were also noted. Approximately 240 m north of this site, a second possibly parallel zone exists. Altered and highly sheared mafic metavolcanic rocks contain fragmented quartz vein material and highly contorted veinlets of quartz. Prominent patches of chalcopyrite were observed throughout the zone which appears to be over 10 m in width. Grab and chip samples collected along strike and across the main zone from the Sturgeon Bridge occurrence returned gold assays up to 0.58 and 0.74 ounce Au per ton. An anomalous zinc result of 1045 ppm was also obtained from a gossan zone in the eastern exposure (Mason and White, 1992). DDH SB08-03 returned 2.53 g/t Au over 1.6 m from a weakly sheared metavolcanics with trace pyrite. DDH SB08-05 returned 1.75 g/t Au over 3.8 m from a sheared metavolcanics with quartz stockwork veining. DDH SB08-13 returned 66.7 g/t Au over 0.3 m from a metavolcanics with quartz veins and pyrite. DDH SB08-14 returned 1.19 g/t Au over 4.3 m from a breccia in metavolcanics with weak shear, quartz-carbonate veins and pyrite (Assessment report 20000004143). Samples collected by B. Nelson in 1992 returned values up to 4.535 g/t Au (Assessment report 42E11NW0074). Sample 91-MFC-7 assayed 1211 ppm Cu and 43 ppm Zn. Sample 91-MFC-9 assayed 240 ppm Cu and 1045 ppm Zn (Assessment report 42E11NW0024). Prospecting during 2018 by A. Onchulenko and P. Gehrels returned assays up to 6.5 g/t Au with elevated copper and zinc values. The mineralized zone has been traced for over 2 km of strike on the property. Prospecting on the property has revealed a copper-rich horizon with malachite staining derived from large blebs of chalcopyrite (Cundari et al., 2019).

Mineral Record Details

References

File - Resident Geologist Mineral Deposit Files

Publication Number: Min Dep Date:

Author:

Publisher Name:

Location: Thunder Bay RGP

Map - Geological series, Legault Township, District of Thunder Bay

Publication Number: P1191 Scale: 1:15,840    Date: 1976

Author: Mackasey W.O., Edwards G.R., Cape D.F.

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: 481-483  Date: 1986

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

Publisher Name: Ontario Geological Survey

Location:

Article - Beardmore-Geraldton Resident Geologist's District-1991

Publication Number: MP158.006 Page: 115  Date: 1997

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

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:

Mono - Report of Activities 2018, Resident Geologist Program, Thunder Bay North Regional Resident Geologist Report: Thunder Bay North District

Publication Number: OFR6352 Page: 30  Date: 2019

Author: Cundari R.M., Paju G.F., Hinz S., Tuomi R.D., Fudge S.P., Pettigrew T.K.

Publisher Name: Ontario Geological Survey

Location:

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