Extract from MINFILE No. 092JNE043:
Development status: Prospect
Name: CHALCO 5 (L.7700), LOWER PIEBITER, PIEBITER CREEK, LIME CREEK
The Lower Piebiter prospect is located along Piebiter Creek just to the east of its confluence with Cadwallader Creek, thirteen kilometres southeast of Bralorne. In this region, extensive splays and crossfaults of the Bralorne fault system are spatially related to numerous mineral occurrences in the Bridge River mining camp.
The prospect area is underlain mainly by feldspathic hornblendite and limestone of the Mississippian to Jurassic Bridge River Complex (Group) in contact with the Cretaceous to Tertiary Bendor pluton to the northwest. A northwest trending belt of serpentinite, correlative with the Permian and older Shulaps Ultramafic Complex, separates hornblendite from Bridge River metasediments to the west.
At least five skarn zones occur in laminated feldspathic hornblendite and crystalline limestone within 300 metres of the Bendor pluton contact. Mineralization consists of chalcopyrite and scheelite with minor molybdenite in quartz-diopside-garnet-epidote skarn. Exploration in 1969 defined a zone up to 50 metres long and three to four metres wide with grades to 6.6 per cent copper, 1.8 per cent tungsten trioxide, 85.71 grams per tonne silver and 0.34 gram per tonne gold (Minister of Mines Annual Report 1948, page 100).
Results of 1980 exploration allowed the calculation of proven and probable reserves of 72,500 tonnes grading 1.3 per cent WO3 (or 1.03 per cent tungsten); conversion to W using the factor 1.2611 (Assessment Report 15871).
See also MINFILE No. 092JNE145 and MINFILE No 092JNE036.
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