Ask The Experts - Geophysics and gold deposits

June 2019 by Chris Ralph

Ask the Experts: Silent partners and mining—is it worth the risk?

January 2014

Ask the Experts

September 2014
• Using drywashers to work desert gravels

Ask The Experts - How do you ship uranium samples to a lab?

February 2018

Ask the Experts: Ionizing mercury

May 2012
Q: What exactly does "ionizing" mercury mean?

Ask The Experts—Precious metals in water?

February 2011
How can I determine if there are precious metals in the groundwater?

Ask the Experts

May 2014
Gold and silver in Pennsylvania

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.

Subscription Required:
June 2019 (Vol. 88, No. 10)   • The Bawl Mill   • Legislative and Regulatory Update   • Ask The Experts - Can you provide information on gold in Ghana?   • Ask The Experts - Do these items qualify as mechanized equipment?   • Ask The Experts - EPA Method 6020 testing   • Ask The Experts - New detector or stick with the old?   • The Value of Old Patches   • A 'Rare' Opportunity for America   • Tips for Cleaning Gold Nuggets   • How Long Does It Take to Find and Recover An Ounce of Gold?   • Gold Prospecting for Better or Worse: In A Tight Spot   • Detecting Wet Ground Yields More Fun Than Gold   • Over The Divide: Jim Straight, 1930-2019   • Beach Mining for Placer Gold   • Reno's 1872 Time Capsule Includes Gold Rush Lore   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

Free:
PLP Update   • Comments Needed On Pebble Project Draft EIS