Ask The Experts
Ask The Experts - How clean do my gold concentrates need to be to pour a gold button or bar?
June 2020 by Chris Ralph
Ask The Experts: What is a Spanish needle?
Some fellow in Texas was selling a Spanish needle—a dousing device used to recover minerals in the old days. Do you know anything about these?
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
• Can you please shed some light on the material I collected...?
Ask The Experts
Gold nuggets and serpentine contacts
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The Bawl Mill
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• Ask The Experts - What is the name and model of the old jaw crusher pictured in last month’s issue?
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