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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  14-Mar-1992 by Peter S. Fischl (PSF)

Summary Help Help

NMI 092H10 Cu6
Name ST. LAWRENCE (L.258), LAW'S CAMP, RAMBLER, SIMILKAMEEN MINING Mining Division Similkameen
BCGS Map 092H056
Status Prospect NTS Map 092H10W
Latitude 049º 34' 14'' UTM 10 (NAD 83)
Longitude 120º 54' 08'' Northing 5492999
Easting 651671
Commodities Zinc, Copper, Lead, Gold, Silver Deposit Types G04 : Besshi massive sulphide Cu-Zn
Tectonic Belt Intermontane Terrane Quesnel
Capsule Geology

This prospect is 1 kilometre southwest of the confluence of Skwum and Lawless (Bear) creeks, and 10.5 kilometres west-northwest of Tulameen. The Liverpool prospect (092HNE066) lies approximately 400 metres to the southeast.

The area southwest of Lawless Creek is underlain by a sequence of dark grey to black pelitic schist, limestone (marble) and chlorite schist (greenstone) of the Upper Triassic Nicola Group. These rocks strike northwest and dip 30 to 70 degrees southwest towards the contact with nearby granodiorite of the Late Jurassic to Early Cretaceous Eagle Plutonic Complex. The upper part of this sequence is intruded by feldspar porphyritic dikes and sills, likely originating from the complex. Stratabound massive sulphides are developed in this area, where noncalcareous pelitic schists grade into overlying calcareous schists and marbles.

The St. Lawrence deposit consists of a massive sulphide lens exposed in three partially caved shafts, up to 1.8 metres thick, dipping 45 to 52 degrees west. The lens is hosted in limestone and quartz-chlorite-biotite schist. Drilling indicates the lens is sharply limited along strike and downdip.

Mineralization consists of pyrrhotite, pyrite and sphalerite, with minor galena, chalcopyrite and magnetite. A 3-metre chip sample taken across a section of pyrite, pyrrhotite and sphalerite in limestone, at the portal of an adit, analysed 0.159 per cent copper, 0.160 per cent lead, 5.354 per cent zinc, 51.0 grams per tonne silver and 1.38 grams per tonne gold (Assessment Report 15419, Appendix 3, sample RAM 6R).

The St. Lawrence prospect was explored by a series of shafts and one 190-metre long adit excavated by C.F. Law and the Similkameen Mining and Smelting Company between 1903 and 1913. Cominco Ltd. drilled around the sulphide lens in 1960 to determine its lateral extent. The prospect was more recently sampled and mapped by Goldwest Resources Ltd., Serem Ltd. and Bordeaux Resources Ltd. between 1980 and 1986.

Bibliography
EMPR AR 1903-186; 1904-238; 1905-256; 1906-180; 1907-144; 1908-132; *1913-236,237; 1914-36; *1960-43,53-55
EMPR ASS RPT *10833, 13472, 14717, *15419, 16826
EMPR PF (*The Consolidated Mining and Smelting Company of Canada Ltd. (undated): 1 to 1200 scale map of geology and drill holes of Law's Camp (see 092HNE066))
GSC MAP 46A; 888A; 889A; 1386A; 41-1989
GSC MEM *26, p. 164; 243, p. 98
GSC P 85-1A, pp. 349-358
GSC SUM RPT 1906, p. 54; 1908, p. 64; 1909, p. 114
CJES Vol. 24, pp. 2521-2536 (1987)
GCNL #2 (Jan. 3), 1986
EMPR PFD 8523

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