Hidden Treasure Mine—Foresthill Divide, California
September 2008 by Don Robinson
Q: [I have] fine gold in activated coconut shell carbon after treatment with a battery charger, battery and salt, from my deep wells. In the furnace, the carbon does not burn away to free the gold, but mixes worse than ever...
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• Favorable bills in Congress
Ask The Experts - Is a detector any good at discriminating pyrite or chalcopyrite in ferrous-reject mode?
Q: Does anyone know of an electrowinning instrument that will plate (heavy plate) rhodium and iridium? I have both in solution. (Solution content = 262.9 oz/ton of iridium; 14.9 oz/ton rhodium.)
If I have precious metals in solution in bulk, say 620 to 1,000 gallons, is there a facility to extract the precious metals out? If so, can each be isolated?
I get a lot of questions from prospectors about garnets, their value and what they tell us about the geology of some types of mineral deposits. So I thought it would be a good idea to take a closer look at the lowly garnet and learn a bit more about it.
Normally the detector he was using would sound off with a definitive high-to-low tone when passed over a piece of gold, which distinguished the gold from the many high iron content "hot rocks," but this one was different...
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