If you type "Picture Rock Quarry" into Google this is what you get. Is it any use?
Patrick _________________________________________________________ 49 02 18N; 118 47 48W The Picture Rock quarry is 4.5 kilometres northwest of Midway between Bauer and Ingram creeks, directly under a major hydroelectric power line. Access is by a dirt road to the power line from the former railway crossing on Highway 3, west of Midway. The quarry is 500 metres south of the Midway mine (082ESE128), from which about 19 tonnes of silver and gold ore with lead and zinc credits were shipped in the late 1960's and early 1970's. The Rainbow claims covering the area have been explored for large tonnage precious metal potential by Dentonia Resources and Kettle River Resources in 1983, Kerr Addison Mines Ltd. in 1984, BP Resources Canada Ltd. from 1987 to 1989 and Minnova Inc. in 1989 and 1990. Through this period to present, ornamental chalcedony has been obtained from the Picture Rock locality for lapidary purposes. At the Picture Rock Quarry, epithermal chalcedonic veins cut altered serpentinite (listwanite) and feldspar porphyry dikes. The quarry is actually a group of small detached and interconnected pits developed over a radius of several tens of metres on the crest of a low ridge. The veins are generally narrow (up to 50 centimetres wide) and mostly shallow dipping to the east and northeast. Typically the veins are delicately banded in white, grey, light blue and blue-green layers that are developed parallel to the veins walls or around listwanitic breccia clasts. Except for the largest veins, seen by the floor of the main pit, which has a hanging wall composed mostly of dickite several centimetres thick, walls are a little altered by the veining. The veins have epithermal gold, silver, arsenic, antimony signatures, with anomalous but subeconomic precious metal values. The Picture Rock chaledonic quartz has proven attractive for the manufacture of clock faces and ornaments by local artisans. The bluish-green colour of some of the chalcedony was thought to be due to the presence of nickel, as chrysoprase, derived from the ultramafic and listwanitic host rocks. However, analysis of a sample of the bluish vein material yielded only 15 ppm nickel. Other elements, possibly contributing to the colour, include 71 ppm cobalt, 94 ppm manganese, 0.46 per cent iron, 538 ppm strontium, 96 ppm chromium, 100 ppm niobium, and 641 ppm tungsten. ------------------------------------------------------------------------- Forwarding addresses: E-Mail: [EMAIL PROTECTED] Web: http://www.dunelm.org.uk/homepages?patrick_powers Lat: N 51d. 49m. 09s: Long: W 00d. 21m. 53s -
