crushing rocks that contain gold - …

The fire assay process works contains all the gold and silver was ... gold, after crushing rock that contains gold silver and platinum. >>Chat Online ; Gold ...

Gold extraction - Wikipedia

A technique known to Pliny the Elder was extraction by way of crushing, ... of the gold. A refractory ore generally contains ... of silver from gold and ...

» Characteristics of Gold

Gold which contains 20% or more of silver is ... are used to recover gold. Sometimes platinum will be present in enough ... a silver-colored rock which is ...

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