Ask the Experts
February 2014 by Chris RalphWhat is the ceramic-like material embedded with gold?
Q: I was wondering how such a device could locate a rich gold vein in quartz, for example, since a metal like gold is non-magnetic.
Q: I am looking for a “trommel machine” that doesn’t separate anything but clay slurry from rock hard clay.
Q: I believe I have found a deposit that contains iridium. What can you tell me about iridium? Are there any tests I can do in the field to confirm it is iridium? How much is iridium worth? Where can I get it assayed? Can I refine it myself?
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