Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42D14SE00065

Record: MDI42D14SE00065

General

Commodities

Primary Commodities: Copper

Secondary Commodities: Gold, Molybdenum, Silver

Location

Township or Area: Strey

Latitude: 48° 47' 6.28"    Longitude: -87° 8' 51.66"

UTM Zone: 16    Easting: 489151.72   Northing: 5403574.94    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 42D14SE

Point Location Description: Shaft or adit.

Location Method: Conversion from MDI

Access Description: Mineral Location No. 4 is in Strey Township about 3 km west of Terrace Bay and 0.4 km south of Highway 17 (claim map G 633). The exact location of the mineralized veins has recently been discovered by K. Fenwick of Historical Prospecting. Several veins are located on the islands and the mainland in Terrace Bay. Numerous other veins are shown on Mineral Locations Nos. 2, 3 & 4. Access is via Highway 17 and then south along the Ontario Hydro Station road. The old foundation? is located about 100 m south of the road along an old trail. A road leads down to cottages on the Lake Superior shoreline.

Exploration History

1863: Logan (1863) described the showing. 1890: Terrace Bay Gold Mining Company had completed a shaft or an adit with an unknown amount of drifting. 1981: A shaft is indicated on map P.2417 (Carter 1981) (upon physical examination of this area an old wooden building mostly in ruin and a large depression which is unlikely to be a shaft were found at this location). Patented Mineral Location No. 4, Ref. 142. No assessment files have been found on the area.

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Schreiber-Hemlo

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (B Nelson) - The geology of the area is dominated by a batholithic mass of hornblende granite and hornblende quartz syenite extending from Worthington Bay, south of Schreiber to just east of Jackfish Lake. The Canadian Mining Review of 1890 gives this account of the property: Terrace Bay Gold Mining Company This company's property comprises 1,600 acres and is situated on the shore of Terrace Bay, a few miles west of Jackfish Bay, Lake Superior. Mr. Roland, M.E., who has lately made an examination of the property for the owners, found it to contain several well defined and highly metalliferous lodes. The geological formation prevailing throughout this tract generally is Laurentian; occasionally as towards the northern and eastern limits rocks of the Huronian age are encouraged. The principal testing work was done on location No. 4 where on a strong well defined lode, bearing north nine degrees east, a drift was run in 45 feet. This lode is joined at intervals of about ten feet with heavy mineralized 'feeders' from the south and east. The lode improved very fast, as the drift was driven in on it. The concentrates from the ore taken out give excellent result. I believe it is the intention of the company to proceed with the development of the property. It is splendidly situated; the Canadian Pacific Railway runs through the property and the harbour facilities are of the best.

Lithology

Mineralization

Mineralization Comments

Dec 07, 2005 (B Nelson) - According to The Canadian Mining Review of 1890: 'The gangue of the veins, as far as tested, consists of fine quartz, of a granular, and in places vitreous, texture and appearance, carrying chalcopyrites, highly auriferous,argentiferous galena, and molybdenite, while the walls are invariably slicken sided with pyro schist, the matrix being occasionally streaked with red orthoclase. An average of twenty five pounds of this chalcopyrites yielded by assay $13.50 per ton of 2,000 pounds.' Sir W.E. Logan (1863,pp.7 506) describes the showing: 'These veins are from one to three or four inches in breadth; and carry, in a gangue of quartz, considerable quantities of yellow and vitreous copper ores, with molybdenite.' Several veins have been described in historical literature including one vein up to 8 inches in width and being traced on a strike of N. 15 degrees E for a mile and a half. In addition several veins (from islands in Terrace Bay) had samples submitted for copper and molybdenum. (Resident Geologist's Files, Schreiber Hemlo District, Thunder Bay) 3 samples collected by K. G. Fenwick in 1984 assayed from <0.01 to 0.01 oz/ton Au. All Ag values were <0.10 oz/ton. Cu values were 0.48% and 1.69%.

Mineral Record Details

Site Visit Information

Date: Feb 19, 1997

Geologist: B Nelson

Notes: Resident Geologist personnel visited this calc-alkalic porphyry deposit in 1984.

References

File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files, Thunder Bay office

Publication Number: Min Dep Date:

Author:

Publisher Name:

Location: Thunder Bay RGP

Map - Nipigon-Schreiber, geological compilation series, Thunder Bay District

Publication Number: M2232 Scale: 1:253,440    Date: 1973

Author: Carter M.W., McIlwaine W.H., Wisbey P.A.

Publisher Name: Ontario Division of Mines

Location:

Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.

Publication Number: OFR5951 Page: 411-13  Date: 1996

Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.

Publisher Name: Ontario Geological Survey

Location:

Map - Geological series, Precambrian geology of the Terrace Bay area, west sheet, Thunder Bay District

Publication Number: P2417 Scale: 1:15,840    Date: 1981

Author: Carter M.W.

Publisher Name: Ontario Geological Survey

Location:

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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office