To: Bill/WA who wrote (2785 ) 8/20/2002 7:17:52 AM From: E. Charters Respond to of 8273 You can pan for diamonds. It is a common technique. People also use a screen on a frame, bouncing it lightly underwater so the diamonds go to the centre. Overturn it on a hard surface and the diamonds and other heavies are in an "eye" in the centre on the top. When panning, keep the pan level and retain the garnets, which are about the same specific gravity. The Canadian diamond searching expeditions began about 20 years ago due to reports that diamonds had been found in the Mackenzie mountains which are in the northern Yukon. Ten years ago it was funded in earnest by a South African who was in charge of Superior Oils' mineral arm, Hugo Dummet. He funded Chuck Fipke, the later to be head of Diamet minerals, who had written a 1000 page report on diamonds found in the Kootenay Mountains in South Eastern BC for the Canadian government. The exploration program funded by Superior Oil started in the Mackenzie mountains, where they began to trace a colourful purple mineral called pyrope garnet on a long glacial pathway east towards the centre of the NWT, and the discovery of the 40 pipes that will eventually produce a wealth of the world's diamonds. When Chuck Fipke was doing the research for the report he wrote in BC in 1980, I was working about 20 miles away in those same mountains panning for diamonds for Selco, the British company that owns part of DeBeers. Fipke got the money and found the mine but I was never able to convince anyone of the importance of the work, despite ten years of trying. It's all who you know. Interesting aside -- the person who first got a geophysical company to use high frequency INPUT methods (called "on-time measurement of time-domain EM") to look for kimberlite pipe "responses" to electromagnetic impulses from flown generators, was a prospector from Ontario, named Karl Forbes. In his company, Strike Minerals, he initiated a study using these techniques of the Blake River volcanics near Kirkland Lake. The study had indifferent results due probably to the lack of correlative testing, but the technique was transferred by the company to the NWT, where it was useful in identifying most of the discoveries in that economically productive region. Conductive methods are needed in this area beacause the magnetic geophysics are ambiguous often due to the lack of differentiation of the signatures in the high magnetic background area of the north. EC<:-}