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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  31-Aug-1995 by Gilles J. Arseneau (GJA)

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Name B.C. (L.1732), TILBURY (L.1733) Mining Division Golden
BCGS Map 082K049
Status Past Producer NTS Map 082K08W
Latitude 050º 26' 29'' UTM 11 (NAD 83)
Longitude 116º 23' 43'' Northing 5587883
Easting 542940
Commodities Silver, Lead, Zinc Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Omineca Terrane Ancestral North America
Capsule Geology

The B.C. occurrence consists of two Crown grants (Lots 1732 and 1733) located on the south side of Mount Catherine in the Golden Mining Division, at 2744 metres elevation above sea level.

Regionally, the area is underlain by Proterozoic clastic sedimentary rocks of the Purcell and Windermere supergroups and by lower Paleozoic strata of the Beaverfoot and Mount Forster formations (Geoscience Map 1995-1).

The Purcell Supergroup strata include the Aldridge, Creston, Kitchener, Dutch Creek and Mount Nelson formations. The Windermere Supergroup unconformably overlies the Purcell Supergroup rocks and includes the Toby Formation and Horsethief Creek Group (Paper 1990-1).

In the vicinity of the occurrence, rocks of the Kitchener and Dutch Creek formations have been further subdivided and assigned to the Van Creek and Gateway formations. The Van Creek Formation correlates with the Lower Kitchener Formation while the Gateway Formation is equivalent to the lower portion of the Dutch Creek Formation. The Mount Nelson Formation has been subdivided into seven discrete members, a lower quartzite, a lower dolomite, a middle dolomite, a purple dolomite, an upper middle dolomite, an upper quartzite, and an upper dolomite (Open File 1990-26).

Rocks of the Horsethief Creek Group, Beaverfoot and Mount Forster formations are folded and overthrusted by rocks of the upper portion of the Dutch Creek Formation and the lower members of the Mount Nelson Formation. The sedimentary rocks have undergone regional metamorphism to at least greenschist facies.

The occurrence consists of a 30 to 50 centimetre wide quartz vein containing galena and tetrahedrite within Mount Nelson dolomite (Open File 1990-26). The vein has been explored with a small, 15 metre deep shaft and a 75 metre long drift. A total of 79 tonnes were sporadically mined from the vein between 1905 and 1927. Total production yielded 198,873 grams of silver, 41,415 kilograms of lead and 427 kilograms of zinc.

EMPR AR 1900-805; 1902-135; 1904-295; 1905-145; 1906-135,248; 1908-246; 1909-100; *1915-82,95; 1919-114; 1927-265
EMPR FIELDWORK 1989, pp. 29-37
EMPR OF 1990-26
EMPR PF (82KSE General File - Geology map by P. Billingsley, 1958)
GSC MEM 148; 369
Pope, A.J. (1989): The Tectonics and Mineralization of the Toby- Horsethief Creek Area, Purcell Mountains, Southeast British Columbia, Canada, unpublished Ph.D. Thesis, University of London, England