Ask The Experts
Ask The Experts
September 2015 by Chris Ralph
Is it possible to use a cell phone GPS away from cell towers?Ask the Experts
• Sweep speed and sensitivity settings for a GPX-4500
Ask The Experts
If it's gold, how should I clean it?
Ask The Experts—Separating platinum from sands using bubbles
I am trying to find any information about using bubbles to separate platinum from sands and small particles. I think it has to have a surfactant in the process. Do you know of this bubble tech?
Ask The Experts—Amalgamation
Q: 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...
Ask The Experts: Could you expand on your previous blasting article?
Q: Could you write more about the last two methods that you mentioned—the expanding chemical mixtures and the micro blasters, how and when to use them, and when not to use them?
Ask the Experts
Gold out of auqa regia
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