All Articles
VMS Deposits in Central Arizona
October 2004 by John Rothermel
Volcanogenic Massive Sulfide (VMS) deposits in the Central Arizona Precambrian volcanic belt occur within a felsic package of volcanic rocks capped by an exhalite unit comprised of cherts, iron formations and siliceous members.
The Paradox Basin—Part II
The Atomic Energy Commission (AEC) was created soon after the war. One of their first deeds was to pass the Energy Act of 1946. This, among other things, provided monetary incentives for nearly every stage of mine development and operation.
PLP Update: Back to The 'Swamp' on Behalf of Small Miners
We spent the morning in a meeting with one of the higher-ups at the US Forest Service. I presented him with 412 complaints received from our readers, along with a summary of the complaints to make his job easier.
The Bawl Mill
• Ripe for the picking
Bella's Birthday Nugget
...under Oakie Jim’s leadership, Lunker Hill was to become a textbook operation of using handheld very low frequency (VLF) and pulse induction (PI) metal detectors to recover placer gold...
Legislative and Regulatory Update
• Hike in mining claim fees
• Hearing on suction gold dredging in California
• Interior wants mining reform
Commercial Placer Mining With Jigs
During the upward stroke, water is pushed up through the shot layer causing it to open up and lifting the gravel particles above. The heavier particles settle faster based on Stokes law, and move down into the shot bed layer, while the lighter...
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The Bawl Mill
• Update: Forest Service Interim Rule
• The Guyana Highlands
• Prospecting with a VLF-Type Gold Detector
• Freegold Ventures' Golden Summit Project
• Picks & Pans: Working the Crevices
• Molybdenum
• 2004 California State Gold Panning Championships
• Company Notes
• Why Environmental Groups Prefer Kerry
• The French Mines of El Boleo
• Looking Back
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
