The average estimated concentration is between 55 and 70 mgkg placing it below chromium 200 mgkg and zinc 132 but above tin and lead Commercially exploited deposits of copper ores are found in many parts of the world frequently associated with mountainbuilding processes
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As of 42515 gold was trading at 118050 per ounce There are 128000 ounces in 4 tons Thats 15110400000
Oct 01 2011 · The copper head grades for copper oxide ore and copper sulfide ore samples were 03 and 08 respectively The copper grade did not vary significantly with respect to particle size as shown in Table 1 The copper oxide ore contains mainly chrysocolla whereas the copper sulfide ore contains chalcocite covellite and chalcopyrite
Jan 01 2005 · Each 1 of reactive copper will consume about 30 kgt of cyanide Drok and Ritchie 1997 but the Lower and Booth 1970 data show that ores that contain copper sulfide minerals will consume significantly greater amounts of cyanide – up to 515 kgt per 1 of reactive copper for covellite due to the formation of thiocyanate and cyanate in
