All Articles
PGMs in California
September 2002 by Edgar B. Heylmun, PhD
The occurrence of platinum-group metals (PGMs) is rather widespread in California in placer deposits, but they are not of commercial interest as things now stand.
MMAC Update
... officials with BLM have been impressed by MMAC’s professional approach and consistency.
Lamproites and Diamonds
Most 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...
Small-Scale Hard Rock Mining With Water Recycling
Once I have established the presence of gold in the sample, I collect five-gallon bucket quantities of the rock material for processing back at my shop.
Route Planning Using GPS
My intention was to end this discussion with waypoints and routes, then I found USGS maps of the Plainfield Quadrangle.
Legislative and Regulatory Update
• California suction gold dredging update
• Governor opposed to Arizona lands withdrawal
• BLM locks up lands in Nevada
Company Notes
• Great Basin Gold
• Hecla Mining Company
• Newmont Mining Corp.
• U.S. Gold Corp.
• X-Cal Resources Ltd.
• Pan American Silver Corp.
• Corner Bay Silver Inc.
Search for the Legendary Sierra Azul
One of the most unique mining stories to derive from the days of the Spanish conquest of the Southwest is the legendary story of the Sierra Azul, or “Blue Mountain” of Arizona. The first reports of what some historians maintain is nothing more than mere myth, came in the middle of the seventeenth century, and it survived as a frontier tradition into the nineteenth century.
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The Bawl Mill
• What's In A Name?
• Our Readers Say
• BLM Swindles War Hero Out of Gold Mine
• Paleoplacers in the Black Hills
• The River Runs Through It
• DEF Has Another Successful Year
• Fellow Miner, Left for Dead, Needs Our Help
• Picks & Pans: The Professional Nuggetshooter
• Company Notes
• Gold in the First Pan
• Looking Back
• Cedros Island, Mexico
• The Eagle and High Peak Mines of Julian, California
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
