roasting black sand to extract fine gold? gpex
· re: roasting black sand to extract fine gold? « reply #1 on:, 02:13:47 am » salt and vinegar form sodium acetate and hydrogen chloride which is a strong acid.
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· re: roasting black sand to extract fine gold? « reply #1 on:, 02:13:47 am » salt and vinegar form sodium acetate and hydrogen chloride which is a strong acid.
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