Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41O09NW00012

Record: MDI41O09NW00012

General

Commodities

Primary Commodities: Gold, Iron

Secondary Commodities: Silver, Copper

Location

Township or Area: Mallard

Latitude: 47° 41' 51.93"    Longitude: -82° 15' 29.64"

UTM Zone: 17    Easting: 405595.3   Northing: 5283474.99    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41O09NW

Point Location Description: Southeastern stripped area with a number of small trenches just back from a logging road.

Location Method: Field Visit with GPS

Access Description: Access is very easy as a logging road extending north from the Sultan Road passes right next to the main stripped areas. This road branches off the Sultan road some 35 km east of Sultan.

Exploration History

1933: Gold mineralization was found on the Maltby claims in attenuated quartz ankerite veins (<40cm) cutting schistose greenstone. Stripping of the outcrop with trenches at either end exposed veins with pyrite, chalcopyrite, malachite, and specularite. In other outcrops veins are mineralized with galena, chalcopyrite and tourmaline. 1980: Adeline International Mines Ltd carried out an exploration program centred on the patented claims to the northwest of the showing but this work also covered the Maltby showing. The work consisted of a magnetic, a VLF-EM, and a rock geochemical survey. Follow up drilling included four holes located just north of the showing which intersected sericite schist together with 'chert' within altered metavolcanics. The metavolcanics contain disseminated pyrite and where assayed the sericite schists contain anomalous gold (0.1g/t) over large widths. (T-2318) 1985-86, Weaco Resources Ltd.: Airborne geophysical survey ( T-3050) 1991-1992, R.Morin, D.Morin & G. Ross/ Copperquest Inc./ Denomme Syndicate: George Ross re-discovered visible gold while prospecting along a series of re-activated and new logging roads. Follow up work consisted of stripping, channel sampling, trenching, and diamond drilling. This work has exposed a number of areas with visible gold associated with pyrite and chalcopyrite in strongly sheared and altered metavolcanics. (T-3562) 1992, Lalonde-Barnes-Firth: Prospecting, geochemical sampling (T-3558) 1995, R. Morin: Ground geophysics (T-3562) 1995, M.Charette: Prospecting, sampling, assays (T-3845) 1997, R. Morin: Prospecting, plugger drilling, sampling, assays (T-3984) 2002, R. Morin: Prospecting, sampling, assays west of original showing (T-4844) 2004, R. Morin: Prospecting, sampling, assays (T-5003; T-5149) 2006, R. Morin: Manual work (recutting lines) (T-5350) 2007, R. Morin: Propsecting, sampling, analysis (T-5680) 2009, R. Morin: Assays, sampling (T-6220).

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

Tectonic Assemblage: Halcrow-Swayze

Geological Age: Neoarchean   Geochronological Age: 2716 MA   Geochron. Age Ref.: OF 2284F

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Geology Comments

Dec 07, 2005 (S Fumerton) - The mineral occurrence is located in a northwest trending shear zone which to the southeast passes close to the Jerome Mine. Shearing along this structure is probably the cause of the schistose foliation which occurs at the showing. In the outcrops at the showing the schistose foliation forms a bifurcating pattern and the quartz veins are strongly attenuated. Locally these attenuated veins have been rotated and secondary quartz veins form irregular clockwise spirals up to 20cm across. Else where the veins and foliation have been folded into 'Z' folds and secondary barren extension veins have been formed. Unlike the mafic metavolcanics, the feldspar porphyry contains a stockwork of brittle fractures which have been sealed by secondary mineralization. Late fractures which transect the schist are sealed with quartz, trend 038 and dip vertically. Other late structures include a conjugate joint set orientated 020/80 and 350/50.

Lithology

Lithology Comments

Dec 07, 2005 (S Fumerton) - The mineralization is hosted in sheared basalt within a sequence of massive and pillowed iron tholeiitic flows which trend south east. At the showing there is extensive iron carbonate and chlorite alteration which tends to occur in discontinuous bands parallel to the schistosity and are up to 5m thick. This alteration tends to be more pronounced near contacts with slightly discordant feldspar porphyry sills which also have carbonate alteration. Like the alteration, the schistose foliation is variably developed and there are some elliptical pods with a lower state of deformation and alteration. These pods are also conspicuous due to the presence of a bright green chloritic/amphibole alteration. The feldspar porphyry sills are moderately foliated and contain a stockwork of quartz veinlets together with irregular trails of chlorite. The quartz carbonate veins are attenuated and zoned with the iron carbonate forming mantles around a quartz rich core. Commonly the carbonate content of the veins is low and no zonation is apparent. Some of the quartz veins extend a short distance into the feldspar porphyry sills.

Mineralization

Mineralization Comments

Dec 07, 2005 (S Fumerton) - Generally subhedral pyrite grains up to 1mm are disseminated in the mafic schist, forming up to 2% of the rock. This pyrite is pale yellow to white. In contrast the quartz veins contain sparse and erratic sulphide mineralization. Visible gold is found in both the quartz veins and the adjacent schist, commonly associated with coarse aggregates of chalcopyrite. Spotty hematite staining on the outcrop is associated with local concentrations of specular hematite. Other silicate minerals found in association with the mineralization are trace amounts of tourmaline needles, and bright green chlorite / fuchsite.

Jul 26, 2007 (D Draper) - 1997 sampling of a quartz vein with massive cpy and py from the original showing returned 9.24 oz/ton Au. (T-3984) In 2004, 2 samples taken to west of original site returned assays of greater than 14% and 15% Fe (T-5003). Also, 4 samples taken near original showing returned from 1.65 g/t to 117.26 g/t Au. (T-5149)

Dec 07, 2005 (A Wilson) - Channel samples collected by the OGS in 1991 returned values of 2.47 g/t au, 5.555 g/t Au, 1.16 g/t Au, 0.48 g/t Au. Grab samples collected in 1991 by the OGS returned values of 0.02 g/t Au, 13.85 g/t Au, 0.89 g/t Au, 0.58 g/t Au.

Sep 27, 2012 (P Bousquet) - Prospecting carried out in the area in 2007 resulted in the sampling of quartz veins in a shear zone. One sample returned an assay of 1.76 g/t Au (T-5680). Further prospecting and sampling was done in 2009, and one sample returned an assay of 2.93 g/t Au (T-6220).

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 1       Structure Type: Shear

Site Visit Information

Date: Jun 19, 1991

Geologist: D Farrow

Notes: In company with R. Sproule, an independent geologist, a tour was guided by Fred Ross in order to examine and sample two showings about 300m apart on the south side of the E.B.Eddy lumber road which traverses Mallard Township. The two showings are located 1.1km and 1.4km east of the Opeepeesway River. Site number 1, the original showing is on the south side of the road 1.1km east of the Opeepeesway River. The outcrop has an exposure of approx 25m x 5m which was expanded during a recent stripping program. Site number 2 is about 25m south of the road 1.4km east of the Opeepeesway River and appears to have been stripped within the past few years. No signs of previous sampling were observed. The outcrop had an exposure of approximately 30m x 50m. The exposure has since been expanded and sampled with a channel saw. [ PRECIS ]

Date: Sep 26, 1991

Geologist: L Lutha

Notes: Together with M. Leroux 19 channel samples were taken from three separate outcrops south of the E.B. Eddy, Mallard road. [ PRECIS ]

Date: Aug 21, 1992

Geologist: S Fumerton

Notes: Together with Ralph Huggins from the MNDM in Sudbury, a visit was made to the recently re-discovered gold occurrence. We were shown around by the claim holders George Ross, Denis Morin, Roger Denommee and Fred Ross. At the time of the visit a second drill hole had just been completed undercutting the eastern stripped area. The previous hole had undercut the 'Main Showing' where selected grab samples had reportedly returned values as high as 22 ounces per ton gold associated with visible gold. Mineralization was found in 1991 by George Ross while prospecting along the newly constructed forestry roads. Subsequent to the discovery a number of outcrops along the road were stripped and channel sampling were collected. In an attempt to get through the strong iron carbonate weathering some of the channels were also trenched. This work has exposed strongly deformed mafic metavolcanics (? komatiites). The intensity of the shearing and carbonate chloritic alteration is variable. In some of the more intensely altered and deformed zones are highly attenuated quartz carbonate zones together with finely disseminated pale pyrite. Roughly superimposed upon these early attenuated veins are secondary quartz veins which have been rotated during their formation and locally have coarse pyrite, chalcopyrite, and fine visible gold. The mafic volcanics have been intruded by small feldspar porphyry dykes which also have some iron carbonate alteration but have deformed in a brittle manner resulting in numerous small fractures filled with quartz, chlorite and pyrite. In places these feldspar porphyry dykes are the locus of the secondary quartz veins.

References

Book - Sudbury Timmins Algoma Mineral Program, Project 1: mineral inventory of the Sudbury-Timmins-Sault Ste. Marie region, Ontario

Publication Number: GSC OF 1087 Page: 41O-52  Date: 1985

Author: Rose, D. G.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/129999

File - Resident Geologist file T-3845 (OP95-240)

Publication Number: Date:

Author:

Publisher Name:

Location: Timmins RGP office

Map - Opeepeesway Lake area, District of Sudbury, Ontario

Publication Number: ARM44G Scale: 1:63,360    Date: 1997

Author: Laird H.C.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Geological series, Mallard Township, District of Sudbury

Publication Number: P2342 Scale: 1:15,840    Date: 1980

Author: Siragusa G.M.

Publisher Name: Ontario Geological Survey

Location:

Part - Horwood Lake area

Publication Number: ARV44-07.002 Page: 28  Date: 1997

Author: Laird H.C.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Benton and Mallard townships, Sudbury District

Publication Number: M2504 Scale: 1:31,680    Date: 1987

Author: Siragusa G.M.

Publisher Name: Ontario Geological Survey

Location:

MonoMap - Geology of the Chapleau area, districts of Algoma, Sudbury, and Cochrane

Publication Number: R157 Page: 172  Date: 1977

Author: Thurston P.C., Siragusa G.M., Sage R.P.

Publisher Name: Ontario Division of Mines

Location:

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

Location: https://doi.org/10.4095/210454

MonoMap - Geology of the Garnet Lake area, District of Sudbury

Publication Number: R248 Page: 72  Date: 1987

Author: Siragusa G.M.

Publisher Name: Ontario Geological Survey

Location:

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 Page: 54-57  Date: 1995

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

Publisher Name: Ontario Geological Survey

Location:

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