Ask The Experts - When do I use detector discrimination?
June 2022 by Chris Ralph
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.
Q: How much gold do I have per ton and how can I improve my assay method?
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?
The Bawl Mill • Why The Paper Change? • Ask The Experts - Is gold found in limestone? • Ask The Experts - Can pyrite crystals be the same color as gold? • How to Use BLM’s New Mineral and Land Records System • A Short But Productive Hunt • Blast from the Past: Jeff Casserly Tells His Own Story • Old Dog(Fighter), New Trick • Talking Metal Detectors with Brent Weaver of Garrett • Strategies for Detecting Heavily Pounded Areas—Part III • EPA Recommends Against Reissuing Permit for PolyMet Mine • The Highs and Hazards of Desert Prospecting • Just Feel The Heft of It • Proposed Nebraska Mine Has Sizeable Deposit of Rare Elements • Mining Stock Quotes and Mineral & Metal Prices • Melman on Gold & Silver