Ask the Experts
July 2013 by Chris RalphQ: How can I locate good places to prospect and meet like-minded individuals at the same time?
Gold deposits and outer space
Q: ...Is there any way to process the ore without using mercury or cyanides...?
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.
Q: Thanks for the great article in the recent ICMJ [“Metallic Trash—Scourge of the Prospector,” July 2012]...
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