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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.
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Legislative and Regulatory Update
July 2018
• Critical minerals obtain national security status
• Idaho to take over EPA permitting
Tucson Mountain Chaos
January 2005
The Tucson Mountains are immediately west of Tucson, in southern Arizona, and include residential areas of the city. The highest peak, Wasson (Amole) Peak, reaches 4,687 feet. It is part of the great Basin-Range physiographic province, characterized by fault-block mountain ranges separated by broad desert valleys.
The Tucson Mountains are immediately west of Tucson, in southern Arizona, and include residential areas of the city. The highest peak, Wasson (Amole) Peak, reaches 4,687 feet. It is part of the great Basin-Range physiographic province, characterized by fault-block mountain ranges separated by broad desert valleys.
WWII Vet & Prospector Still Going Strong
July 2011
Lately I’ve been having success utilizing two types of detectors in succession. The first is a pulse induction (PI) detector with a blanket-style antennae, and I follow it up with a very low frequency (VLF) detector.
Lately I’ve been having success utilizing two types of detectors in succession. The first is a pulse induction (PI) detector with a blanket-style antennae, and I follow it up with a very low frequency (VLF) detector.
Time for a New Approach: Detecting Float Gold
September 2013
The first pieces found were in a spot that most gold hunters would not even detect, right in the middle of a downslope meadow.
The first pieces found were in a spot that most gold hunters would not even detect, right in the middle of a downslope meadow.
The Significance of Nuggets in Placers
January 2016
Chances are better that both types of gold did not come from the same source. Let's look at the probable conditions to cause two types of gold in a placer.
Chances are better that both types of gold did not come from the same source. Let's look at the probable conditions to cause two types of gold in a placer.
2007 Annual Photo Contest Winners
January 2008
The Saga of Sand Mountain
April 1999
The Nevada Historical Society's
"This Was Nevada" Series
The Nevada Historical Society's
"This Was Nevada" Series
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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
