Ask the Experts

February 2014 by Chris Ralph

Ask The Experts—What minerals are magnetic? Can rare earth magnets capture platinum?

February 2011
What minerals are magnetic? I have heard that super magnets (rare earth magnets) can capture platinum. True?

Ask the Experts: Set up a small portable operation or send the ore to a custom mill?

March 2012
Q: Set up a small portable operation or send the ore to a custom mill?

Ask The Experts - What are these thin brittle sheets with reddish powder?

August 2018

Ask the Experts

March 2014
NOI or POO for small backhoe

Ask The Experts

March 2016
Estimating the gold content of ores with gold, quartz and other minerals?

Which Specific Gravity Test Works Best?

August 2011
Have you ever wondered how accurate specific gravity tests are in determining the amount of gold in a specimen?

Ask the Experts

April 2014
Bismuth oxide for assaying?

Subscription Required:
The Bawl Mill   • Legislative and Regulatory Update   • Ask the Experts   • Ask the Experts   • Ask the Experts   • Our Readers Say   • The Perfect Summer   • Eolian Gold Deposits   • Copper Deposits of Alaska   • Divide and Conquer—Detecting Old Placer Grounds with Friends   • Reserves and Resources Explained   • Critical Metals: Lithium   • Coprolite—A Prospector's Tale   • Comstock Mining Gets Approval   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

Free:
SB 838 and the Future of Mining in Oregon   • New Mining Regulations in Maine