Lamproites and Diamonds
November 2002 by W. Dan HauselMost prospectors are aware that diamonds are sometimes found in kimberlite, but few are aware that diamonds are also found in another rock type known as lamproite. Lamproite is a very rare volcanic rock that often...
…more difficult terrain must be traversed in the hope of locating small pockets, low depressions or small gullies on needle-covered slopes.
Most placer equipment is really made with gold in the 30 and larger mesh sizes in mind, though if carefully used can often get reasonable recovery down to the 50 mesh size.
Another little gem of equipment he built was a nifty sample splitter. In order to get accurate assays, you need to have really good, representative samples for the assayer to process.
Washington’s decision to bar new uranium mining near the Grand Canyon and other federal policies on energy and resource issues are barriers holding back Arizona and its residents from prosperity, Governor Jan Brewer told a congressional hearing March 16.
The Bawl Mill • Our Readers Say • Working the Belmont Mine, Butte, Montana—1953 (Part 2) • A Real Placer Miner • Mojave Desert Gold • Miner Unhappy After Judge Dismisses Charges • Picks & Pans: Fig Tree, Grape Vine and Good Gold • Sluicing on Bedrock • Sandstone Silver in Texas • A Few Prospecting Notes From Jim Straight • Explorers to Salvage Gold-Laden Ship • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices • Looking Back