Ask The Experts
December 2014 by Chris Ralph• A place for mining equipment "on the cheap"?
• Sweep speed and sensitivity settings for a GPX-4500
Q: ...Is there any way to process the ore without using mercury or cyanides...?
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.
• Determining the amount of gold in a specimen
Q: What amount of silver is considered the best find ever?
Gold deposits and outer space
The Bawl Mill • Legislative and Regulatory Update • Ask The Experts • Ask The Experts • Uncovering the Find of a Lifetime • Suction Dredging Battle Escalates • Guinea Africa: Gold, Ebola, and a Monkey Barbecue • Finding Gold in Tailing Piles • Small-Scale Processing of Hard Rock Ores • 2014 Index - Annual Tables of Content • Why Did This Silver Mine Close? - Pt III • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices