Ask The Experts
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November 2012 by Chris Ralph
Where to process high grade gold ore containing sulfides?Additional articles that might interest you...
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If it's gold, how should I clean it?
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Bacterial gold
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Ask The Experts - Help with an assay report
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Hydraulic remnants or just lose material?
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• Sweep speed and sensitivity settings for a GPX-4500
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The Portable XRF Gun
November 2012
While there is no metal detector that will see only gold, there is a device that can reliably distinguish gold from lead, copper, iron or other metals. It is an X-Ray fluorescence tester, sometimes called an XRF gun.

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