Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42E12NE00023

Record: MDI42E12NE00023

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Silver

Location

Township or Area: Vincent

Latitude: 49° 39' 4.81"    Longitude: -87° 44' 20.71"

UTM Zone: 16    Easting: 446650   Northing: 5500128    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 42E12NE

Point Location Description: Maki’s Discovery Occurrence on OGS map P2854

Location Method: Data Compilation

Access Description: The property is located in the northwestern portion of Vincent Township. From Highway 11, travel south between McComber and Vincent Townships to the CNR tracks. Permission to cross these tracks with heavy equipment can be obtained from the CNR. Norman and Edith lakes can be crossed by boat in late summer and fall. A system of logging roads and claim lines access the occurrences.

Exploration History

1928: The Westman Occurrence, which lies on the south boundary of the present Maki Occurrence, was trenched and sampled. 1937: Trenching conducted by Hilo Gold Syndicate Group. 1947: 34 holes, totalling 845 m, drilled by Dougall Gold Mines, who acquired the property from Sandenise Gold Mines Ltd. 1958: Linecutting, geology and geophysics were conducted. 4 holes drilled near the 'Big Trench' and 2 holes near the 'Skidder Trench' by Sogemines Development Company. 1959: 9 holes drilled in the Sandra's Pit area by Sogemines. 1971-74: Mapping and 7 holes drilled in the Sandra's Pit area by Hanson Mines Ltd. 1977: Mechanical work and drilling reported by N. Maki, A. Maki, M. Maki, and B. Cousineau. 1981: Pancontinental Mining (Canada) Ltd. optioned the claims and conducted linecutting, surface sampling and mapping. 1982: N. Maki performed stripping and trenching. 1983: Eldor Resources Ltd. performed linecutting, geophysics, geology and sampling, and drilled 11 DDH totalling 692.5 m. 1984-85: Quinterra Resources Inc. optioned the Maki Occurrence and conducted sampling. Quinterra dropped the option. 1986: Noranda Exploration Company Ltd. carried out soil sampling. 1989: N. Maki carried out prospecting and sampling. 1991: N. Maki carried out sampling.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Beardmore-Geraldton

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (B Nelson) - The Maki Occurrences (Main Block) are hosted in the Southern Metavolcanic Sub-belt. Basalt and mafic to intermediate tuffs, minor mafic and felsic intrusions along with chemical and minor associated interflow sedimentary rocks are present in the unit. Foliation is 70 degrees to 95 degrees AZ. Rocks are metamorphosed to greenschist grade. The metavolcanic rock is mainly iron theoleiites. Basaltic mafic to intermediate tuffs underlie the Main Block. Sandra's Pit, the Skidder Find and portions of the Discovery Trenches are examples of ironstone-associated gold. Gold is associated with asp, po and py in replacement sulphides in discontinuous layers or in quartz veins. The ironstone consists of mesobands of magnetite, recrystallized chert, grunerite and iron carbonate. Several ironstone units occur on the property but one main unit, 1-2 m thick, follows a linear trend through the centre of the property (up to 3 parallel iron formations occur separately within 10 m). The ironstone units strike 080-095 degrees and dip 63-80 degrees south. Quartz-carbonate veins can be observed at the Big Pit, Discovery Area, Moosehorn Occurrence and Moosefind. The veins commonly intrude the metavolcanics discordant to foliation and can appear as a stockwork system.

Lithology

Mineralization

Mineralization Comments

Jun 09, 2021 (B Nelson) - The quartz is milky white, massive to saccharoidal and locally contains epidote, tourmaline, chlorite, hematite and fuchsite. Veins range up to 5.0 m wide. Visible gold occurs in the Discovery and Big Pit veins. Sample 81-MNM-19, taken in 1981, yielded 0.38 oz/ton Au and 1.88 oz/ton Ag. Sample 81-MNM-29 yielded 0.81 oz/ton Au and 5.89 oz/ton Ag. Sample 84-MWM-3, taken in 1984, yielded results of 3.38% As, 2.3 ppm Sb and 500 ppb Au. Sample 84-MWM-4 yielded results of 4.38% As, 3.3 ppm Sb, and 3200 ppb Au. Sandra's Pit, the Skidder Find and portions of the Discovery Trenches are examples of ironstone-associated gold. Gold is associated with arsenopyrite, pyrrhotite and pyrite in replacement sulphides in discontinuous layers or in quartz veins. The ironstone consists of mesobands of magnetite, recrystallized chert, grunerite and iron carbonate. Several ironstone units occur on the property but one main unit, 1-2 m thick, follows a linear trend through the centre of the property (up to 3 parallel iron formations occur separately within 10 m). The ironstone units strike 80-95 degrees and dip 63-80 degrees S. Assays range up to 0.40 ounce gold per ton. Quartz-carbonate veins can be observed at the Big Pit, Discovery area, Moosehorn Occurrence and Moosefind. The veins commonly intrude the metavolcanics discordant to foliation and can appear as a stockwork system. The quartz is milky white, massive to saccharoidal and locally contains epidote, tourmaline, chlorite, hematite and fuchsite. Veins range up to 5.0 m wide. Visible gold occurs in the Discovery and Big Pit veins (Mason and White, 1986).

Jun 09, 2021 (Therese Pettigrew) - In 1937, the Hilo Gold Syndicate (1937) trenched in the central part of the claim block, reporting 0.06 opt (2.06 gpt) Au from a 42 inch (1.07 m) chip sample of banded cherty quartz and iron formation "fairly well mineralized by pyrite", and cut by a 4 inch (10 cm) vein of glassy quartz (Teare, 1937). Further trenching in 1938 uncovered two 12 inch (30.5 cm) quartz veins with "considerable free gold", in a zone of silicification and carbonatization and sulphides that included pyrrhotite, arsenopyrite, and minor chalcopyrite. Hilo described its No. 1 vein as striking east-west and dipping 70° south, with an average width of slightly over 40 inches (1.02 m) over a strike length of 450 feet (137 m), and "a fair amount of free gold ... along the footwall". Samples of the footwall band, taken at 2 feet (0.61 m) intervals, averaged $149.80 (4.38 opt / 150.2 gpt Au) over 7 inches (17.8 cm), and a 40 pound (18.1 kg) sample of blasted material assayed $400 (11.42 opt / 391.1 gpt Au) over 12 inches (30.5 cm). Hilo's No. 2 vein was described as two irregular quartz-carbonate stringers 4 to 36 inches (10 to 91 cm) wide cutting banded chert and tuff, with coarse gold grains in the quartz over a length of 20 feet (6.01 m). The No. 2 vein was traced over a strike length of 600 feet (183 m), but gold grades were deemed to be patchy. Hilo's No.3 vein returned gold in pan samples over a strike length of 500 feet (152 m), and one trench across it assayed $3.50 (0.1 opt / 3.43 gpt Au) over 9 feet (2.7 m). Pyrrhotite, arsenopyrite, chalcopyrite and minor pyrite were not directly associated with gold in any of the trenches.

Mineral Record Details

Site Visit Information

Date: Jan 10, 1997

Geologist: B Nelson

Notes: The Beardmore-Geraldton Economic Geologist visited the occurrences May 6, 1981, June 25, 1981, June 26, 1981, August 4, 1982, and 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: 384-380  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: 108  Date: 1998

Author: Langford G.B.

Publisher Name: Ontario Dept. of Mines

Location:

Compend - The geology of gold in Ontario

Publication Number: MP110 Page: 84-97  Date: 1983

Author: Colvine A.C.

Publisher Name: Ontario Geological Survey

Location:

Map - Namewaminikan (Sturgeon) River area, District of Thunder Bay, Ontario

Publication Number: M1934C Scale: 1:126,720    Date: 1997

Author: Bruce E.L., Rickaby H.C.

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:

Mono - Preliminary report on the geology of the Blackwater-Beardmore area

Publication Number: PR1951-07 Date: 1998

Author: Peach P.A.

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:

Compend - Summary of field work, 1983

Publication Number: MP116 Page: 32-36  Date: 1983

Author: Wood J., White O.L., Barlow R.B., Colvine A.C.

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