While some gold will be merely picked up off the bottom, sifted from loose rock or watercourses, in places where gold is in a very less targeted type it has to be extracted from rock or different mineral ores. The rock or ore is usually crushed in massive processing mills and also the gold is then separated from the rock using chemicals that dissolve the gold, like sorts of cyanide or sodium thiosulphate. this is often called leaching. When the gold leaches out it's then refined from the mixture of chemicals, called anode slime, by passing an electrical current through it inflicting the gold to stay to the electrode through that the present passes.
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