Ask the Experts

June 2014 by Chris Ralph

Ask The Experts

June 2015
Gold in clastic black shale

Ask The Experts—Iridium

December 2010
Q: I believe I have found a deposit that contains iridium. What can you tell me about iridium? Are there any tests I can do in the field to confirm it is iridium? How much is iridium worth? Where can I get it assayed? Can I refine it myself?

Ask The Experts

November 2015
• Can you please shed some light on the material I collected...?

Ask The Experts - LR 2000, ArcGIS, and other mapping applications

December 2018

Ask the Experts

May 2014
Sampling and mining a historic mining claim

Ask The Experts - What assay value is needed for cobalt deposits?

August 2018

Ask the Experts

July 2013
Q: Is there a special name for this silver and copper alloy?

Subscription Required:
The Bawl Mill   • Ask the Experts   • Ask the Experts   • Ask the Experts   • Ask the Experts   • Ask the Experts   • Finding Gold with a VLF Detector—Part III   • Silver and Base Metal Deposits of the Pioche District   • California Dredgers: A Step Closer to Getting Back in the Water   • Arizona's Youngest...and Oldest Prospector   • Exploring Placers with Auger Drills   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices   • Correction   • Crushing Quartz in Calaveras County: A Placer Miner Learns New Tricks

Free:
Legislative and Regulatory Update   • A Few Methods for Sampling Hardrock Deposits   • Protecting Our Access to Public Lands