Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41O09SE00042

Record: MDI41O09SE00042

General

Commodities

Primary Commodities: Lead, Zinc, Gold, Silver

Location

Township or Area: Huffman

Latitude: 47° 37' 7.09"    Longitude: -82° 11' .63"

UTM Zone: 17    Easting: 411067.55   Northing: 5274593.17    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41O09SE

Point Location Description: Trenches at east end of a group in vicinity of DDH 82-15

Location Method: Field Visit with GPS

Access Description: Easy access to the trenches is possible via boat from the old Jerome Mine and then a series of skidder/drill trails lead up to the trenches.

Exploration History

1939: Cominco - prospecting. 1949-50: Jess-Mac Gold Mines Ltd. - ground magnetometer survey, trenching, 21 ddh. 1966: Rio Tinto - ground magnetometer and EM survey. 1971: Falconbridge Nickel - VLF-EM and magnetometer survey. 1981-83: Osway Exploration: ground magnetometer and VLF-EM survey, trenching, drilling. 1985: Muscocho Exploration - diamond drilling. 1991-92: W. Brereton - compilation, prospecting, mapping, soil geochemistry. 1993: Cameco Corporation - till sampling, diamond drilling. 2007- 2010: Augen Gold Corp. - AEM, AMag, ARAD; Pr, Assays; EM, IP, Mag, GC, Samp.

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

Tectonic Assemblage: Ridout

Geological Age: Neoarchean   Geochronological Age: 2745 +/- 4 MA   Geochron. Age Ref.: OF 3384 F

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Geology Comments

Dec 07, 2005 (A Wilson) - As the higher-grade intervals cannot be easily connected, it would appear that the various veins and shears are individually discontinuous.

Lithology

Lithology Comments

Jun 30, 2016 (A Wilson) - Variable rocks occur in the overall area, all of which have been mapped as part of the Jerome porphyry. At the western trenches in the vicinity of DDH 82-8, the host rock is a fine grained, aphanitic, off-white with green and mauve tints on the fresh surface. Very fine-grained pyrite is disseminated in the matrix, forming up to 1%. There are also fine-grained pastel clots in the rock which does have a distinctly volcanic appearance. At the eastern trenches, in the vicinity of DDH 82-15, the rock is the more typical variably sheared, carbonatized, chloritic feldspar porphyry. Locally, the more sheared parts contain carbonate, sericite, and possibly anhydrite as alteration minerals together with rare hematite.

Mineralization

Mineralization Comments

Jun 30, 2016 (A Wilson) - Three types of mineralization occur in the area: 1) disseminated sulphides in the porphyry matrix, 2) sulphide smears along shear planes, 3) vein hosted mineralization. The disseminated sulphide mineralization is variable with sparse grains of pyrite, galena and chalcopyrite. Over short intervals, the pyrite concentration is up to 25%. Typically, pyrite occurs as trails and seams associated with some of the shear zones. However, in the trench near DDH 82-15 there is a sugary, white shear zone about 1m thick which contains numerous thin seams (<2mm thick) which are braided and form a flasered type texture. These seams, which make up to 20% of the shear zone, consist of massive galena, sphalerite and some pyrite. Quartz-carbonate lenses and ine veins contain pyrite, galena, and sphalerite. The lenses are up to 10 cm thick, but grade to the more common fine veins. Most galena and sphalerite is associated with thin veins and these may also host tourmaline. Locally, the pyrite concentrations are massive. Diamond drilling by Osway had average values of 0.2 g/t Au, 5 g/t Ag, 0.28% Zn and 0.12% Pb. Grab samples collected by the OGS in 1994 returned values of 0.01 g/t Au, 1.0 g/t Ag, 0.0114% Cu, 0.01% Pb and 0.027% Zn; 0.42 g/t Au, 67.5 g/t Ag, 4.1% Pb and 8.82% Zn. The best assay from a grab sample in 1984 returned a value of 0.07 oz/t Au, 5.04 oz/t Ag, 11.5% Pb and 6.5% Zn.

Nov 14, 2011 (P Bousquet) - Augen Gold Corp. sampled trenches in that area. The rock sampled consisted of either grey quartz with disseminated sulphides with quartz veinlets, or greenish, rusty, rotten altered rock. Values to up to 4.04 g/t Au, 80.8 g/t Ag, 3.96% Pb and 10.1% Zn were returned from assays.

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 1       Structure Type: Shear

References

Map - Geological series, Jerome area (east), District of Sudbury

Publication Number: P2370 Scale: 1:15,840    Date: 1980

Author: Siragusa G.M.

Publisher Name: Ontario Geological Survey

MonoMap - Geology, Geochemistry and Mineralization of the Southern Margin of the Swayze Belt

Publication Number: OFR5844 Scale:     Date: 1993

Author: Siragusa G.M.

Publisher Name: Ontario Geological Survey

Map - Precambrian Geology, Huffman Township and Part of Arbutus Township

Publication Number: OFM0212 Scale: 1:15,840    Date: 1993

Author: Siragusa G.M.

Publisher Name: Ontario Geological Survey

MonoMap - Mineral Prospects of the Swayze Greenstone Belt (Volume 1, Parts of NTS 41 O and Volume 2, Parts of NTS 41 P, 42 A and 42 B)

Publication Number: OFR5912 Scale:     Date: 1995

Author: Fumerton S.L., Houle K.A.

Publisher Name: Ontario Geological Survey

Map - Geology, Swayze greenstone belt, Opeepeesway Lake, Ontario

Publication Number: OF3384f Scale: 1:50,000    Date: 1999

Author: Heather, K B; Shore, G T

Publisher Name: Geological Survey of Canada

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Ministry Contact Information

For detailed information regarding this mineral record please contact the Timmins Resident Geologist District Office