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How To Extract Gold From Chalcopyrite Ore

How To Extract Gold From Chalcopyrite Ore

2020-5-15In panning large samples only one or two specks of gold could be seen although the ore contained from 1 to 2 ounces per ton. This ore yielded only about 40 per cent on being amalgamated but over 90 per cent was dissolved out by leaching the raw ore with cyanide of potassium and similar results were obtained by chlorination

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