All Articles
Flat-Fault Gold
August 2001 by Edgar B. Heylmun, PhD
Gold and other valuable metals are often deposited in breccia and rubble formed by flat or gently-dipping faults. Such faults are commonly found in areas of crustal stretching caused by the movement of tectonic plates. Flat-faults are especially common in southeast California, southern Arizona, and northern Sonora, Mexico. However, they can be present anywhere that crustal stretching has occurred.Additional articles that might interest you...
Hidden Treasure Mine—Foresthill Divide, California
September 2008
One of the greatest and richest underground placer mines of California was the Hidden Treasure Mine of Placer County.
One of the greatest and richest underground placer mines of California was the Hidden Treasure Mine of Placer County.
The Treasure Detective—Part IV The Story of Goldstone Nuggets
October 2006
A treasure detective, like any detective, is looking for a clue from which he can develop information to solve a mystery. Who? Why? When? The detective sniffs out a trail that will lead eventually to some undiscovered cache of coins...
A treasure detective, like any detective, is looking for a clue from which he can develop information to solve a mystery. Who? Why? When? The detective sniffs out a trail that will lead eventually to some undiscovered cache of coins...
Proper Spacing of Placer Sample Sites
September 2013
The zone of influence of each sample must be carefully considered when deciding how far sample sites should be spaced from each other.
The zone of influence of each sample must be carefully considered when deciding how far sample sites should be spaced from each other.
Mining Stock Quotes and Mineral & Metal Prices
October 2018
Over the Divide—Robert Michael “Mike” Corbley
April 2014
Mike was...featured on our November 2013 cover after he achieved his dream of recovering several huge nuggets...
Mike was...featured on our November 2013 cover after he achieved his dream of recovering several huge nuggets...
Ask The Experts
February 2016
Is there a reasonable and cost effective way to separate out the values?
Is there a reasonable and cost effective way to separate out the values?
Discoloring Assay Beads
October 2001
We have developed a discoloring procedure, that makes parting unnecessary in many cases. Our discoloring solution contains sulfur, an element that tarnishes high silver content beads quite rapidly.
We have developed a discoloring procedure, that makes parting unnecessary in many cases. Our discoloring solution contains sulfur, an element that tarnishes high silver content beads quite rapidly.
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