Ask the Experts: Tantalite in an African nation -- is it worth pursuing?
March 2012 by Chris RalphQ: Tantalite in an African nation -- is it worth pursuing?
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.
How do sluicing and drywashing compare in effciency?
Q: What exactly does "ionizing" mercury mean?
Bismuth oxide for assaying?
Q: With safety as a given, what can the average miner, or Joe-blow greenhorn do to identify and extract some metals or minerals with off-the-shelf products or natural ingredients?
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