Ask The Experts: Sulfides and fluxes

July 2017 by Chris Ralph

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

Ask The Experts - How much rock shall I crush to determine the value?

October 2017

Ask the Experts: More suggestions for dealing with metallic trash....

August 2012
Q: Thanks for the great article in the recent ICMJ [“Metallic Trash—Scourge of the Prospector,” July 2012]...

Ask the Experts

October 2014
• Sweep speed and sensitivity settings for a GPX-4500

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.

Ask The Experts - Can gold be found with sugary, crystalline quartz?

January 2019

Ask The Experts

September 2015
What are the steps for filing a mining claim?

Ask The Experts - Were there insufficient values to continue mining at this site?

December 2017

Were there insufficient values to continue mining at this site?

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