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.
Additional articles that might interest you...
Lost Canyon
February 2009
The name makes you wonder, “Just how remote is this place?” It’s in the Tahoe National Forest and the Canada Hill Mining District, an area of steeply cut canyons that averages about 5,000 feet in elevation.
The name makes you wonder, “Just how remote is this place?” It’s in the Tahoe National Forest and the Canada Hill Mining District, an area of steeply cut canyons that averages about 5,000 feet in elevation.
Extraction of Precious Metals Using Froth Flotation
December 2012
Without this versatile group of technologies, we would be hard-pressed to produce the metals so critical to our modern way of life. The robust mining industry of today would literally not exist.
Without this versatile group of technologies, we would be hard-pressed to produce the metals so critical to our modern way of life. The robust mining industry of today would literally not exist.
Ask The Experts
April 2016
• Should I focus efforts on this particular rock type?
• Should I focus efforts on this particular rock type?
Melman on Gold & Silver
June 2010
...we cannot help but wonder exactly how nation after nation, already massively in debt and presently burdened with monumental operating deficits, is going to come up with such largesse. We also wonder exactly how going ever-more deeply into debt is going to resolve a debt crisis.
...we cannot help but wonder exactly how nation after nation, already massively in debt and presently burdened with monumental operating deficits, is going to come up with such largesse. We also wonder exactly how going ever-more deeply into debt is going to resolve a debt crisis.
The Downieville Gold District
January 2011
Many locals are just waiting for California to allow dredging once more, especially with the current gold prices. There are still plenty of good opportunities for prospectors in this area, just as it has been for so many years.
Many locals are just waiting for California to allow dredging once more, especially with the current gold prices. There are still plenty of good opportunities for prospectors in this area, just as it has been for so many years.
Legislative and Regulatory Update
September 2017
- PLF sues over critical habitat
- Attorney General ends EPA slush fund
Understanding and Prospecting Benches
September 2011
The most obvious benches are usually near the valley floor, but they can be thousands of feet above the valley floor. Since benches were made by streams, they can contain placer deposits.
The most obvious benches are usually near the valley floor, but they can be thousands of feet above the valley floor. Since benches were made by streams, they can contain placer deposits.
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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
