Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42E10NW00030

Record: MDI42E10NW00030

General

Commodities

Primary Commodities: Gold, Molybdenum

Secondary Commodities: Copper, Silver, Lead

Location

Township or Area: Ashmore

Latitude: 49° 40' 53.13"    Longitude: -86° 50' 8.2"

UTM Zone: 16    Easting: 511859   Northing: 5503224.01    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 42E10NW

Point Location Description: AMIS Shaft location

Location Method: Data Compilation

Access Description: The property is located 9.0 km southeast of Geraldton townsite, in the southeast corner of Ashmore Township. The claim group lies along the east and northwest shore of Eldee Lake, south of Highway 11. The main showing on TB632229 can be reached by boat from Highway 11, south along Triplet Creek to the northeast shore of Eldee Lake. The landing site is marked by old mine buildings from where an overgrown trail can be followed a short distance to the shaft. Access is also gained overland 914 m due south of a point just east of Triplet Creek on Highway 11.

Exploration History

1934: P.J. Roche staked 16 claims east of Eldee Lake, adjoining the Oklend Gold Mines Ltd. property to the west. Prospecting resulted in the discovery of two favorable structures - the Daley and the Blacksmith veins. The Roche Long Lac Gold Mines Ltd. company was formed to finance further development. A one compartment 35.1 m shaft was sunk on the Daley vein. Operations were suspended before any lateral work could be done. 1936: Six DDH totalling 1200 m were completed on the westward extension of the Daley vein under Eldee Lake. Assays proved low. 1945: The ground was transferred to Draco Mines Ltd. in April. 1946: Draco Mines initiated a geophysical survey and completed 11 diamond drill holes totalling 2120 m. Results were inconclusive, and no further work was done. 1947-1970: The ground changed hands many times, with little or no work performed. 1970: Hollinger Mines Ltd. performed mag and EM surveys and drilled two holes totalling 340.5 m. Both holes were located approximately 1.5 km northwest of the veins on which the shaft was sunk in 1934. 1971: Hollinger added 11 claims to the east and south and performed mag and EM surveys on these claims. 1972: Two patented claims known as the Kalson Group were optioned by Hollinger. A geological survey and 6 DDHs totalling 756.8 m were completed to check anomalous copper values obtained in the 1970 drilling and to test a zone of ground conductivity. 1973-84: Some stripping and sampling performed. Three diamond drill holes totalling 304.9 m tested the shear zones. 1986: Unistar Technologies Corporation of Vancouver held the Roche property, consisting of 40 claims. 1991: M.F. Swereda carried out geological mapping, VLF-EM and magnetic surveys. 1997: Forrester Gold Mining Corp. carried out magnetic and VLF-EM surveys. 1999: S.D. Shields carried out prospecting, sampling, and mapping. 2003: S.D. Shields carried out prospecting, sampling, and mapping. 2006: S.D. Shields carried out prospecting, sampling, and mapping. 2008: Kodiak Exploration Ltd. carried out airborne VLF-EM and magnetic surveys. 2009: Kodiak carried out prospecting, trenching, and sampling. 2010: Kodiak was renamed to Prodigy Gold Inc. and carried out prospecting, mapping, trenching, sampling, and drilled 4 DDH totalling 341 m.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Beardmore-Geraldton

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (B Nelson) - The claim group is underlain by mafic metavolcanic rocks intruded by dykes of massive, coarse-grained hornblende diorite to gabbro and albit porphyry. These in turn are in contact to the southwest with metasediments striking N50 degrees to 80 degrees W, and dipping steeply southwest. Rocks in the study area are highly fractured and sheared and it is along two of these major shear zones that mineralization occurs. Minor economic mineralization occurs along two silicified shear zones which cut across diorite, metavolcanics and albite porphyry in an easterly direction. Known as the Blacksmith and Daley veins, these were exposed by stripping and trenching. They generally consist of parallel quartz veins and stringers exhibiting well-developed book and ribbon (crack and seal) structures up to 1 m wide (Daley vein) in sharp contact with the surrounding wall rock. The Daley vein, on which the shaft is located, is the most persistent and can be traced for a distance of 457 m. The narrower (20 cm) Blacksmith vein, 33.5 m to the south, is exposed for only 76.1 m; however, the grade is slightly higher. Both are open along strike. Gold values are low despite the presence of coarse free gold.

Lithology

Mineralization

Mineralization Comments

Dec 07, 2005 (B Nelson) - Mineralization is contained within white, massive, sugary-textured quartz and consists of pyrite, arsenopyrite, sphalerite, chalcopyrite, galena, and visible gold. Pyrite and arsenopyrite occur as well-formed, fractured crystals in both the vein material and the wall rock. Minor amounts of ankerite are also associated with the quartz. 'Gold occurs as irregular fracture fillings in both the quartz and iron sulphides, and as tiny replacement blebs in pyrite and arsenopyrite' (Pye and Horwood, 1951). Gold values are low despite the presence of coarse free gold.

Jul 25, 2019 (Therese Pettigrew) - Samples generally returned values of 0.01-0.12 oz/t Au (0.31-3.73 g/t Au), 0.01-0.74 oz/T Ag (0.31-23.0 g/t Ag), 6-560 pm cu, 11-1030 ppm Pb, and 10-170 ppm Zn. Sample 83-MGW-3 from the Daley Vein returned 1.96 oz/T Au (60.96 g/t Au) (Mason and White, 1986). The Blacksmith Vein was discovered in 1934. It strikes for at least 100 m striking at roughly 60 degrees. The vein is a 15 to 20 cm mineralized quartz-carbonate vein and hosts pyrite and chalcopyrite. There are reports of visible gold from the Blacksmith Vein. Grab samples from Prodigy Gold’s 2010 prospecting program returned assay values up to 24.0 g/t Au. The Daley Zone was discovered in 1934 and is visible west of the exposed portion of the Blacksmith Vein. The zone is a quartz-carbonate vein with a strong shear envelope and hosts pyrite mineralization. The zone strikes at roughly 60 degrees, and has been outlined for 125 metres, but is open to the east. The best prospecting samples returned assay values up to 48.7 g/t Au. The Maximus Zone was first discovered in 2009. The zone consists of a quartz-carbonate vein up to 30 cm wide with occasional S-shaped folding, and a shear envelope up to 2.5 m wide. The zone strikes at roughly 75 degrees, and extends for 75 metres. The vein hosts small amounts of pyrite, chalcopyrite and molybdenite. Channel sampling from the vein returned 17.20 g/t Au over 1.2 m, and prospecting returned assay values up to 49.30 g/t Au, 2.7 g/t Ag and 0.32% Mo. The Titus Zone was discovered during the 2010 surface exploration program by Prodigy Gold Inc. The zone consists of a quartz-carbonate stockwork through a moderately sheared gabbro, and is up to 1.9 m wide. The zone has been outlined for 70 m trending at roughly 95 degrees, and is open to the west. The zone hosts pyrite, molybdenite, and chalcopyrite mineralization. Prospecting of the zone returned assay values up to 3.1 g/t Au, 35.6 g/t Ag, 0.213% Mo, and 2.54% Cu. Gold mineralization appears to be related to the amount of pyrite and chalcopyrite, and to a lesser extent, the degree of shearing (Assessment file 20000006767, 20000006338).

Mineral Record Details

Site Visit Information

Date: Jan 17, 1997

Geologist: B Nelson

Notes: The Beardmore-Geraldton Economic Geologist visited the occurrence August 3, 1983.

References

Map - Little Long Lac gold area, District of Thunder Bay, Ontario

Publication Number: ARM44D Scale: 1:31,680    Date: 1997

Author: Bruce E.L.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Long Lake-Pagwachuan Lake area, District of Thunder Bay, Ontario

Publication Number: ARM46B Scale: 1:63,360    Date: 1997

Author: Fairbairn H.W., Macdonald R.D.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Township of Ashmore, District of Thunder Bay, Ontario

Publication Number: M1951-02 Scale: 1:12,000    Date: 1997

Author: Horwood H.C., Pye E.G.

Publisher Name: Ontario Dept. of Mines

Location:

Part - Geology of Ashmore Township

Publication Number: ARV60-05 Date: 1997

Author: Horwood H.C., Pye E.G.

Publisher Name: Ontario Dept. of Mines

Location:

Article - 1979 report of North Central Regional Geologist

Publication Number: MP091.004 Page: 45  Date: 1997

Author: Fenwick K.G., Larsen C.R., Scott J.F., Mason J.K., Schnieders B.R.

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

Publication Number: OFR5630 Page: 512-518  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

Part - Little Long Lac gold area

Publication Number: ARV44-03 Date: 1997

Author: Bruce E.L.

Publisher Name: Ontario Dept. of Mines

Location:

Part - Geology of the northern Long Lake area

Publication Number: ARV46-03.001 Page: 1-22  Date: 1997

Author: Fairbairn H.W.

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