How Do They Separate Gold From Silver And Copper Ores

Classification of ores.In fluxing ore for gold and silver, first determine the nature of the sample submitted for assay.Three different classifications may be made in the preliminary examination of ores first, pure quartz very glassy or vitreous second, no quartz plastic and free from grit third, a mixture of these two extremes which may be assumed to be the average as to siliciousness.

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