Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41O16NW00023

Record: MDI41O16NW00023

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Copper

Location

Township or Area: Horwood

Latitude: 47° 56' 26.13"    Longitude: -82° 19' 40.26"

UTM Zone: 17    Easting: 400835.681   Northing: 5310550.653    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41O16NW

Point Location Description: The main prospect pit marked on work by Maramo Gold Syndicate and published by Laird 1935

Location Method: Field Visit with GPS

Access Description: The occurrence is located some 700m from the west shore of Horwood Lake near the old Tionaga Mine and access is via boat from a landing at the north end of Horwood Lake. All old trails to the showing from the lake are completely overgrown. Alternatively, access is possible via a drill trail connecting the drill holes on the western end of the showing to the old access road from Horwood Lake to the Orofino mine. This road does connect with the Dore Main Haul Road to the west.

Exploration History

1933 Originally staked by C.S. Gifford and W. MacRae then held by the Maramo Syndicate. 1934 Connell Mining and Exploration optioned the property and sampled the mineralization with reported values up to 11 g/t over 2m. 1936 Prospector Airways optioned the property and systematically sampled the mineralization with some success, though the mineralization was found to be erratic. 1937 Teck - Hughes optioned the main property and drill tested the main mineralization. Their results were not as encouraging as the values obtained from the trenches. 1947 J. Lefever drilled a number of holes on his own account along the shore of Horwood Lake over the next three years with indeterminate results. 1948 The Liberator Prospecting Syndicate mapped the main showing and surrounding rocks. 1965 Donalda Mines carried out an electromagnetic and magnetic survey over the known mineralization. 1972 Proto Exploration and Holdings Inc carried out a vertical loop electromagnetic survey over an area that included the occurrence. 1980 Northgate Exploration expanded their exploration efforts eastwards from the Orofino Mine to include the Gifford showing. Initial work consisted of humus and stream sediment sampling with indifferent results over this showing. Despite this nine holes were cored in the following year under some of the old trenches and returned generally low gold values in sheared volcanics. 1986 Golden Dragon Resources carried out a geological reconnaissance in the area which included the showing but made no mention of the mineralization. 1990 Messrs Morin and Ross staked the ground, relocated the trenches and resampled the veins. Sampling was also carried out by Noranda Exploration during a property visit. During this sampling a number of assays up to 6 g/t Au were obtained but the average of all the sampling was 1.3 g/t.

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

Geological Age: Neoarchean   Geochronological Age: 2700 MA   Geochron. Age Ref.: GOO VOL 1

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Geology Comments

Dec 07, 2005 (S Fumerton) - Mineralization occurs along a number of closely spaced altered shear zones parallel to the general trend of the surrounding metavolcanic sequence. These shear zones are not very thick (<2m).

Lithology

Lithology Comments

Dec 07, 2005 (S Fumerton) - The surrounding rocks consist pillowed and massive tholeiitic flows, both fine grained and coarse grained. These flows are intercalated with thin, irregular, highly foliated to schistose horizons metavolcanics and lesser, thin argillaceous horizons. The sequence has also been intruded by a number of small quartz porphyries. At the showing the metavolcanics are strongly foliated to schistose which contains sericite.

Mineralization

Mineralization Comments

Dec 07, 2005 (S Fumerton) - Mineralization most commonly occurs in sheared and altered mafic metavolcanics together with small quartz stringer zones. Locally these quartz stringers form a stockwork. Disseminated pyrite and pyrrhotite occur within the quartz veins and adjacent rocks the full length of the shear zone with other sulphides occurring in minor amounts. Sulphides may form up to 5% of the wall rock and the sulphides are locally concentrated along the quartz vein margins. Locally adjacent to the veins the wall rock is highly silicified, i.e. pervasive silicification has changed the host rock into a hard, fine grained, grey rock. The quartz veins are multiphase with a ribbon texture caused by short discontinuous calcite veins forming 10% of the vein and thin selvedges of the adjacent country rock aligned parallel to the vein. The quartz occurs in two forms a clear, coarse, smoky variety and an off-white milky quartz with disseminated subhedral pyrite which has a conspicuous brilliance forming up to 5% of the veins. There are up to four veins which pinch and swell from 20 to 50cm.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 5       Structure Type: Shear

Site Visit Information

Date: Aug 04, 1992

Geologist: S Fumerton

Notes: The showing is extensively overgrown, most of the trenches are filled with decaying vegetation, partially or completely flooded, and are moss covered. All evidence of trails has been obliterated by new growth. Basically little has changed physically from the sketches made by the Maramo Gold Syndicate in the thirties. There has been no attempt to clean the trenches out more recently. Although some old drill collars were located and they would appear to correspond to the work of Teck Hughes. These holes immediately undercut some of the old trenches. No drill collars corresponding to work by Northgate were spotted. These may have tested the southwestern extension of the showing at depth.

References

File - Resident Geologist files T-2114, T-2626

Publication Number: Date:

Author:

Publisher Name:

Location: Timmins RGP office

Map - Horwood Lake, Sudbury District

Publication Number: M2329 Scale: 1:31,680    Date: 1975

Author: Breaks F.W.

Publisher Name: Ontario Division of Mines

Location:

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

Publication Number: OF3384c Scale: 1:50,000    Date: 1999

Author: Heather, K B; Shore, G T

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/210451

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

Publication Number: GSC OF 1087 Date: 1985

Author: Rose, D.G.

Publisher Name: Geological Survey of Canada

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

Map - Geology, Swayze Greenstone Belt, Ontario [legend and figures]

Publication Number: OF 3384A Date: 1999

Author: Heather, K B; Shore, G T

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/210446

File - Resident Geologist files 1946, air photo

Publication Number: Date: 1996

Author:

Publisher Name:

Location: Timmins RGP office

Part - Horwood Lake area

Publication Number: ARV44-07.002 Page: 35-36  Date: 1997

Author: Laird H.C.

Publisher Name: Ontario Dept. of Mines

Location:

Part - Geology of the Horwood Lake area

Publication Number: ARV46-02 Page: 21-22  Date: 1997

Author: Harding W.D.

Publisher Name: Ontario Dept. of Mines

Location:

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

Publication Number: R157 Date: 1977

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

Publisher Name: Ontario Division of Mines

Location:

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

Publication Number: OF 3384b Scale: 1:50,000    Date: 1999

Author: Heather, K B; Shore, G T

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/210450

MonoMap - Geology of the Horwood Lake Area, Sudbury District

Publication Number: R169 Page: 46  Date: 1978

Author: Breaks F.W.

Publisher Name: Ontario Geological Survey

Location:

Publication - Gold occurrences of Ontario east of Lake Superior; Geological Survey of Canada, Memoir 192

Publication Number: GSC Mem 192 Date: 1936

Author: Kindle, E.D.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/100824

Mono - Gold deposits of Ontario, part 2, part of District of Cochrane, districts of Muskoka, Nipissing, Parry Sound, Sudbury, Timiskaming, and counties of southern Ontario

Publication Number: MDC018 Page: 65-66  Date: 1979

Author: Gordon J.B., Lovell H.L., de Grijs J.W., Davie R.F.

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: 278-280  Date: 1995

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

Publisher Name: Ontario Geological Survey

Location:

Book - Horwood Township - unpublished GDIF

Publication Number: GDIF Date: 1990

Author: Resident Geologist Office

Publisher Name:

Location: Timmins RGP

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