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Gold/Mining/Energy : Gold Price Monitor -- Ignore unavailable to you. Want to Upgrade?

To: Bill/WA who wrote (91352)	11/21/2002 10:15:47 AM
From: E. Charters	Respond to of 116954

Nevah been to Chee house. Gold does follow the Volcanism in western Canada. Wherever I found gold in a stream I generally found volcanic on the Mt. top. I did not find gold ubiquitously in granite areas. Where granites were well known for being the main rock upstream gold was not found that much. They indicate high potassium calk-alkaline volcanics with high magnesium in the principle gold areas. This corresponds to some picritic basalts. In Archean times andesites were more productive. But basalts are gold hosts in many areas. It may be too the calk-alkaline volcanism overprinted earlier andesites. This area would be productive of diamonds by this chemistry as well, despite its mobile belt or mt building association. You are on the right track. The next step is to get a practical testing methodology. Panning large sample sizes with a careful specific technique where rivers are fast and "riffly" and where black sands and blue clay predominate is a good idea. It would be a good idea to have a small dredge mechanism and a rocker "combo-box" of plastic or aluminum that is fold-out. For small quantities a shovel will do just as well as a dredge. A mini-rocker with a slanted inner-tube rubber apron catch-all is better recovery and more uniform than a pan. (Only has to be about 2 feet long by 1 foot. A plastic or aluminum pipe section or sawed 5 gallon pail will do for the rocker bottom. To make the sides you could used galvanized sheet or plastic and rivet it. For the gravel pan or receiver, you could use a gold pan with holes cut in it, or expanded metal. The frame and stiffness members for the construction could could be made from aluminum window moulding or strips, bolted. A sloping bed of riffle-slats below the rubber apron could be made from plastic horizontal cross-slats bent downward-concave and slanted about 30 degrees from right angles to the long axis, and towards the low end. This bed is sloped at about 15 degrees from the bottom of the apron down to the actual rocker bottom. Below these "lapstrake" riffle-slats, which are above the actual rocker bottom, you put in a false bottom to catch fine gold. Gravel exits holes or a low (2 inch high) lip at the end of the pail section and it may reverse direction from the slope of the riffle slat before exiting. The slats are overlapped top over bottom and there is a gap maintained between these flat-type riffles. The gold sucks-back into the false bottom as the riffles flex. Challenge is to make it all take-down and packable.) You really have to test about 1/10 of a yard to get and idea what a stream has. pages.ca.inter.net EC<:-}