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Ask The Experts - Can you explain how caliche forms?

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Ask The Experts: Sulfides and fluxes


The concentrate is just the heaviest of the heavy minerals but some sulfides are sneaking in there also with the gold...

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Q: Can a voltmeter be used to determine the type of metal/mineral present in soil?

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• Real or fool's gold?

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...

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Ore testing and other advice for starting up a mining operation.

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—Difference between a Geiger counter and scintillator


Would you explain the difference between a Geiger counter and a scintillator and how they operate in uranium prospecting?

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The Bawl Mill   • Ask The Experts - How does gold form?   • Ask The Experts - Do you think it’s realistic for a detectorist to recover a couple of ounces per week if working full time?   • Ask The Experts - Can you suggest proper discrimination settings for my detector?   • Time to Stake Your Own Mining Claim   • A Day On The Yuba River   • Determining The Optimal Crushing Size for Gravity Recovery   • Gold Prospecting for Better or Worse: The Pains of Prospecting   • To Foam or Not to Foam   • Following Man-Made Ditches to Recover More Gold   • Sixteen to One Gold Mine: Going Underground - Pt II   • All About Native Silver   • Internet Forum Gold   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

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