Ask The Experts—Amalgamation
January 2011 by Chris RalphQ: Exactly how does amalgamation work? Does it “melt” the gold (or copper, or silver, etc.) and form an alloy? If one leaves a piece of gold in mercury, will the entire sample become an amalgam (combination) of gold and mercury? Or does it only affect the surface...
While there is no metal detector that will see only gold, there is a device that can reliably distinguish gold from lead, copper, iron or other metals. It is an X-Ray fluorescence tester, sometimes called an XRF gun.
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How do mines and refiners deal with doré bars?
• Reopening closed areas
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• Reason for adits rather than shafts?
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