Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI41O16NW00004

Record: MDI41O16NW00004

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Silver

Location

Township or Area: Horwood

Latitude: 47° 57' 17.17"    Longitude: -82° 19' 2.83"

UTM Zone: 17    Easting: 401639   Northing: 5312113    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 41O16NW

Point Location Description: AMIS headframe location

Location Method: AMIS Site Visit

Access Description: The showing is located right on the east shore of Horwood lake and access is possible via the lake or via road. Access via the lake is from Highway 101 at the Horwood Lake turn-off then 11km south to the landing on Horwood Lake then a 15km boat trip is required to the mine on the south arm or the lake. Access via road is circuitous though possible by taking the Kenogaming and Penhorwood main haul roads south and southwest from Highway 101. South of Tionaga station there are a number of secondary logging roads to within 1km of the mine and then an old trail leads to the mine.

Exploration History

1933 Wm Smith discovered a massive auriferous quartz vein. Trenching exposed a 0.75 x 18m vein which reportedly returned 25 g/t gold. 1935 Hollinger Consolidated Gold Mines optioned the property and shaft sinking began within the vein on an incline and completed to a vertical depth of 132m or 182m on the incline in 1936 with levels on 60m, 100m and 175m. There was a 30m of development on the 175m level. In this work a number of small ore grade pods were blocked out grading between 7 and 30 g/t gold. Three diamond drill holes cored in 1937 failed to intersect the vein at depth and consequently the option was dropped. 1937 Company reorganized as Tionaga GML and the shaft was extended 40m with additional levels at 135 and 215m. A 50 ton / day amalgamation mill was also installed. This additional work exposed a vein between 0.7 and 2m thick over a 20m strike length containing visible gold. 1938 Limited production was realised over the next two years. 1949 J. Lefever drilled some holes on adjacent ground. 1980 Northgate Exploration and Orofino Resources carried out a large exploration program which enclosed the old mine workings. Initially this program consisted of a magnetic and VLF-EM survey. This was followed by a humus sampling, soil sampling and a limited Max Min survey. Anomalies defined in these surveys were followed up by a trenching program but no new mineralization was defined in the area of the old mine workings. 1984 Orofino Resources drilled ten holes to re-evaluate the original Smith vein and determined that the gold distribution was spotty and there is a variable gold silver ratio. Subsequently the area was mapped but the lack of outcrop inhibited any interpretation. Sampling an old trench on a vein east of the shaft returned low gold values. 1989 Golden Dragon Resources optioned the property and carried out a reconnaissance geological mapping program.

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

Lithology

Lithology Comments

Dec 07, 2005 (S Fumerton) - The surrounding rocks consist of a sequence of Fe Tholeiitic basalt flows and tuffs striking east - west and dipping steeply to the north. The flows include pillowed flows and relatively thin massive flows. Away from the shaft alteration of these metavolcanics is not noticeable and to the north the rocks are remarkably pristine. At depth a quartz feldspar porphyry plug occurs in the old workings. This porphyry contains beta quartz phenocrysts up to 4mm across forming 5% of the rock together with diffuse orange brown feldspar phenocrysts up to 3mm and which make up to 30% of the rock. The matrix is pale green grey, aphanitic, vitreous and contains sparsely disseminated pyrite. A moderately foliated and strongly chloritized metavolcanic occurs on the muck pile but is not exposed. This alteration may be closely associated with the auriferous vein. As this rock has chlorite aggregates it may correspond to lamprophyres logged in recent holes.

Mineralization

Mineralization Comments

Dec 07, 2005 (S Fumerton) - In the underground workings the main vein has been traced along strike for about 100m, followed down dip 200m and varies between 0.7 and 2m thick. In the upper levels the vein is parallel to the metavolcanic stratigraphy and with a minor diffraction extends across the contact into the quartz feldspar porphyry body at depth. Parallel to the main vein and in close proximity are a number of other quartz veins but these have not been fully defined. The main quartz vein consists of very coarse smoky quartz with bands of coarse white quartz. This material has been fractured and recemented with calcite plus lesser amounts of some iron carbonate. Tourmaline has also been noted in the vein. Mineralization occurs primarily as visible gold though sparsely disseminated pyrite is more dominant. In addition chalcopyrite, pyrrhotite, galena, sphalerite and stibnite have been observed.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Site Visit Information

Date: Jul 07, 1992

Geologist: S Fumerton

Notes: The property was visited together with Marc Leroux of the MNDM. The head frame is still standing and most timbers are sound where covered over. The mill and crushing circuit have been demolished and equipment removed while the ancillary buildings have collapsed. The shaft has not been capped and is covered with loose steel, pit props, plumbing steel etc. The accommodation buildings to the north are still in use though run down.

References

File - Resident Geologist files T-2626, T-2629

Publication Number: Date:

Author:

Publisher Name:

Location: Timmins RGP office

Map - Geological series, Kerns Township, District of Timiskaming

Publication Number: P0784 Scale: 1:15,840    Date: 1972

Author: Lovell H.L., Frey E.D., Caine T.W.

Publisher Name: Ontario Division of Mines

Location:

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-142, 41O-161  Date: 1985

Author: Rose, D. G.

Publisher Name: Geological Survey of Canada

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

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

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

Part - Geology of the Horwood Lake area

Publication Number: ARV46-02 Page: 17-18  Date: 1997

Author: Harding W.D.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Annual report for the year 1967, statistics of the mineral industry and mining operations in Ontario for 1967

Publication Number: ARV77 Page: Part 7, p. 34-35  Date: 1998

Author: Riddell G.S.

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:

MonoMap - Geology of the Horwood Lake Area, Sudbury District

Publication Number: R169 Page: 46-47  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: 68-69  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: 270-272  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 Staff

Publisher Name:

Location: Timmins RGP

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