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File Created: 31-Mar-1987 by Allan Wilcox (AFW)
Last Edit:  07-Feb-1991 by Shielagh N. Banfield (SNB)

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NMI
Name PROSPECT CREEK, PEARL Mining Division Nicola
BCGS Map 092I005
Status Showing NTS Map 092I03E
Latitude 050º 00' 48'' UTM 10 (NAD 83)
Longitude 121º 04' 05'' Northing 5541901
Easting 638414
Commodities Perlite Deposit Types R12 : Volcanic glass - perlite
Tectonic Belt Intermontane Terrane Overlap Assemblage
Capsule Geology

The Prospect Creek showing is located on the west bank of Prospect Creek, approximately 0.8 kilometres from its confluence with Spius Creek.

The area is underlain by Middle and Upper Cretaceous Kingsvale Group mafic volcanics (redefined to the Spius Creek Formation of the Spences Bridge Group; Geological Survey of Canada Map 42-1989). Rocks close to the showing comprise volcanic breccia and aphanitic, amygdaloidal, vesicular, porphyritic and spherulitic andesites and basalts.

Two parallel amber to brown perlite layers are exposed over 6 by 3 metres and separated by spherulitic, glassy rhyolite (possibly dykes or chilled contact zones) striking 030 degrees and dipping 40 to 60 degrees southeast (Assessment Report 13336). Another two metre wide perlite layer is exposed 30 metres to the south (upslope). Perlite layers are terminated by flat-lying andesite.

Perlite displays pitchy lustre and contains scattered feldspar and quartz crystals and spherules.

Bibliography
EMPR AR 1954-A185
EMPR ASS RPT 11852, *13336
EMPR EXPL 1983-270; 1984-203
GSC MAP 1010A; 1386A; *42-1989
GSC MEM 262
GSC OF 980
GSC P 46-8; 47-10; 81-1A, pp. 185-189; 85-1A, pp. 349-358

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