All Articles
Metal Detecting for Gold Within Andesite and Basaltic Volcanic Mining Districts
May 2006 by Jim Straight
Andesites and basalts are the most common volcanic rocks in the North American Cordillera. The andesites originated within the earth’s continental crust, while the basalts originated within the mantle. According to the Plate Tectonic theory...
Additional articles that might interest you...
Legislative and Regulatory Update
January 2016
• More roadblocks in southern California
• Greater Sage-grouse withdrawals
• More roadblocks in southern California
• Greater Sage-grouse withdrawals
The Oquirrh Mountains, Utah
July 2013
...we will visit three dormant mining districts that lie in the Oquirrh Range in Utah. Some major activity that transformed the lives of thousands of people occurred here from the mid 1860s to the late 1990s.
...we will visit three dormant mining districts that lie in the Oquirrh Range in Utah. Some major activity that transformed the lives of thousands of people occurred here from the mid 1860s to the late 1990s.
Dredging Alternative: High Banking
October 2009
The hope was that a bit of the gold from that famous old pocket mine had worked its way down the slope of the hill and into the gravels Pat and his crew were planning to mine.
The hope was that a bit of the gold from that famous old pocket mine had worked its way down the slope of the hill and into the gravels Pat and his crew were planning to mine.
Ask The Experts—Amalgamation
January 2011
Q: Exactly how does amalgamation work? Does it “melt” the gold (or copper, or silver, etc.) and form an alloy? If one leaves a piece of gold in mercury, will the entire sample become an amalgam (combination) of gold and mercury? Or does it only affect the surface...
Q: Exactly how does amalgamation work? Does it “melt” the gold (or copper, or silver, etc.) and form an alloy? If one leaves a piece of gold in mercury, will the entire sample become an amalgam (combination) of gold and mercury? Or does it only affect the surface...
Ask the Experts
September 2013
Is Burkina Faso safe for prospecting?
Is Burkina Faso safe for prospecting?
Turning Hobby Mining into Business Mining
March 2013
The first thing a person should do is seriously consider whether they want to go mining as a hobby or a business, and the tax implications of the choice.
The first thing a person should do is seriously consider whether they want to go mining as a hobby or a business, and the tax implications of the choice.
New Life for the Suction Nozzle
December 2003
The suction nozzle was one of the first Venturi nozzles to be used in the dredging business. Years later it was replaced with the straight Venturi system, which is sometimes referred to as a “log.” The main benefit of the log is that the operator only needs a suction hose with a short nozzle.
The suction nozzle was one of the first Venturi nozzles to be used in the dredging business. Years later it was replaced with the straight Venturi system, which is sometimes referred to as a “log.” The main benefit of the log is that the operator only needs a suction hose with a short nozzle.
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