Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42E10NW00017

Record: MDI42E10NW00017

General

Commodities

Primary Commodities: Copper, Gold

Secondary Commodities: Silver, Zinc

Location

Township or Area: Ashmore

Latitude: 49° 41' 17.64"    Longitude: -86° 51' 18.84"

UTM Zone: 16    Easting: 510442   Northing: 5503978    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 42E10NW

Point Location Description: Trenches, diamond-drill holes.

Location Method: Conversion from MDI

Access Description: The property is located in Ashmore Township, immediately northwest of Eldee Lake. The property is easily accessible from Trans Canada Highway 11, which crosses the northeastern portion of the claim block 6.2 km east of the turnoff to Geraldton (Highway 584).

Exploration History

1931: Claims were staked independently by Oscar Savioli and Peter Gagnon. 1932: Oscar Savioli's claims were cancelled and Peter Gagnon conducted surface exploration on his claims. 1933: Peter Gagnon restaked the former Savioli property and continued with surface exploration. 1934: Lac Development Ltd. was incorporated by A.E. Tyson and G.W. Rayner. The six claim block was optioned from Peter Gagnon. Trenching and stripping were done. Three holes totalling 399.5 m were drilled by Lac Development Ltd. Operations were suspended and the option was later dropped. 1936: The six claims were optioned to A.M. Gillespie. An agreement was reached whereby Woods Mac Holdings acquired ownership of the six claims. 1937: Claims TB10162 to TB10164 inclusive were patented by Woods Mac Holdings. 1939: Claim TB10171 was patented by Woods Mac Holdings. 1944-49: Claims TB11305 and TB11306 were cancelled and restaked four times by various individuals and were eventually acquired by Hard Rock Gold Mines Ltd. 1950: Hard Rock Gold drilled 1 DDH totalling 135.3 m. 1970: Hollinger Mines Ltd. drilled 2 DDH totalling 340.5 m. 1971: Hollinger Mines conducted a magnetometer survey. 1972-73: Hollinger Mines carried out a geological survey and drilled 14 DDH totalling 1746.9 m. 1989: A. Wilson drilled 1 DDH totalling 134.1 m. 1990: A. Wilson drilled 1 DDH totalling 40.45 m. 1991: A. Wilson drilled 1 DDH totalling 93.9 m. 1994: A. Wilson drilled 1 DDH totalling 111.3 m.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Beardmore-Geraldton

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (B Nelson) - Except for a few outcrops of greenstone in the northeast corner of claim TB10971, the Woods Mac group is underlain by Timiskaming-type conglomerates, which, to the south, grade into a thick series of greywackes and slates with a few narrow bands of iron formation. Intrusive into the sedimentary rocks are sill-like, lenticular masses of hornblende diorite and younger albite porphyry. The formations strike across the property in a general west-northwest direction and dip south at about 65 degrees. To the southeast they are offset about 1200 feet to the south by a transverse fault which strikes N40-50 degrees E across the claim group. Twenty feet north of the north boundary of claim TB10971, a lenticular quartz vein up to 18 inches wide has been opened up on the surface by trenching for a strike length of about 200 feet. This vein strikes N72 degrees E across the greenstones north of the porphyry intrusives and dips 65 degrees S. Ninety feet to the south of the north vein there is a parallel structure, up to 6 inches in width, which strikes obliquely across the northern greenstone porphyry contact and dips to the south at 70-75 degrees.

Lithology

Mineralization

Mineralization Comments

Dec 07, 2005 (B Nelson) - The cp and po occur as fillings of small veins cutting across the gangue material. Py occurs as ragged remnants of crystals or aggregations of crystals scattered through the larger areas of po and cp or as small crystals scattered sparsely through the gangue. The order of disposition appears to have been 1). earlier py; 2). quartz; 3). Po and cp, 4) later py. The occurrence of gold in the two structures induced Lac Development to test the veins by diamond drilling, and during the summer of 1934 three holes, having a total footage of 1310 feet, were bored. The values encountered in the cores proved to be low, and, consequent upon failure to find economic mineralization elsewhere on the property, operations were suspended.

Jul 25, 2019 (Therese Pettigrew) - Attention was first drawn to the area during an examination of a rusty rock cut on the main highway. Copper and zinc mineralization with massive pyrrhotite stringers up to 3% Cu were found by Hollinger Mines staff. The best result from the 1970 holes was 0.70% Cu over 5.2 m. Pyrite and pyrrhotite are the main sulphides present and are usually disseminated. Chalcopyrite is usually disseminated or in small stringers. Magnetite and arsenopyrite were only encountered in hole A-7-72. Both occurrences are less than 6” long and are completely disassociated. The magnetite is found in a chert band which is brecciated and contains some pyrrhotite and chalcopyrite. The arsenopyrite is found in the banded altered andesite and has an associated gold assay of 0.15 oz/t Au (4.67 g/t Au). No visible gold was observed (Assessment report 42E10NW0154). The best intersections from the 1972-73 drill program included: 0.295% Cu and 0.128 oz/t Au over 1.5 m and 0.338% Cu, 0.61% Zn, and 0.231 oz/t Ag over 1.2 m in DDH A-3-72; 1.56% Cu and 0.43 oz/t Ag over 0.61 m, 0.69% Cu and 0.23 oz/t Ag over 0.3 m, 2.36% Cu and 0.15 oz/t Ag over 0.61 m in DDH A-4-72; 6.9% Cu and 1.578 oz/t Ag over 0.3 m, and 1.52% Cu and 0.789 oz/t Ag over 0.3 m in DDH A-5-72; 0.3% Cu and 0.088 oz/t Ag over 0.3 m in DDH A-6-72; 0.025 oz/t Au over 5.2 m in DDH A-7-72; and 0.85% Cu and 0.199 oz/t Ag over 0.91 m, and 0.55% Cu and 0.266 oz/t Ag over 0.61 m in DDH A-8-72 (Assessment file 42E10NW0145).

Mineral Record Details

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:

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

Publication Number: OFR5630 Page: 647-649  Date: 1986

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

Publisher Name: Ontario Geological Survey

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:

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 - Little Long Lac gold area

Publication Number: ARV44-03 Date: 1997

Author: Bruce E.L.

Publisher Name: Ontario Dept. of Mines

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 - Thunder Bay data series, Geraldton area, Thunder Bay District

Publication Number: P2520 Scale: 1:15,840    Date: 1982

Author: Love W.D.

Publisher Name: Ontario Geological Survey

Location:

Report an Error

We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.

Terms of Use

Please review our Terms of Use agreement for this data product.

Ministry Contact Information

For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office