All Articles
Alluvial Fans
April 2002 by Edgar B. Heylmun, PhD
Alluvial fans are essentially dry land “deltas” which can be found in all climates. However, they are best developed in arid and semi-arid regions, where they may be many square miles in area. They are built up by outpourings of silt, sand, and gravel caused by seasonal run-off, as well as by boulders and cobbles carried by flash floods.Additional articles that might interest you...
The Guaniamo Diamond Region, Venezuela—Part I
July 2010
The considerable richness of the gravels is shown by the fact that operators have successfully worked the same river sections for over 20 years.
The considerable richness of the gravels is shown by the fact that operators have successfully worked the same river sections for over 20 years.
Melman on Gold & Silver
November 2014
I find it difficult to recall a period when the world has encountered so many simultaneous threats which “should” have driven gold and silver higher, and yet the precious metals markets—so far—have failed to rally to any significant extent.
I find it difficult to recall a period when the world has encountered so many simultaneous threats which “should” have driven gold and silver higher, and yet the precious metals markets—so far—have failed to rally to any significant extent.
Legislative and Regulatory Update
July 2018
• Critical minerals obtain national security status
• Idaho to take over EPA permitting
PGMs in California
September 2002
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.
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.
Melman on Gold & Silver
April 2007
Keeping track of the news during the past month was like watching the later rounds of a boxing match, the part where the light jabs and the “feeling out” of the opponent were passed and the heavy hitting begins, because last month we were hit with several powerful stories affecting our markets.
Keeping track of the news during the past month was like watching the later rounds of a boxing match, the part where the light jabs and the “feeling out” of the opponent were passed and the heavy hitting begins, because last month we were hit with several powerful stories affecting our markets.
Legislative and Regulatory Update
July 2007
• Assembly Bill 1032
• Cache County v. USFS
• CMA appeals cyanide ban
• Assembly Bill 1032
• Cache County v. USFS
• CMA appeals cyanide ban
I Finally Made It to Northern Nevada
August 2014
After a while I got a very nice signal and out came a sweet kidney-shaped bit of gold weighing about three grams.
After a while I got a very nice signal and out came a sweet kidney-shaped bit of gold weighing about three grams.
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