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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...
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January 2011
• California suction dredgers had better prepare for battle
• California suction dredgers had better prepare for battle
Fire Agate in Arizona
June 2002
Agate, a banded form of chalcedony (cryptocrystalline quartz), has been used as a gemstone for over 7,000 years. Romans cut and polished agate, and this practice was taken to new heights in Germany in the 16th century.
Agate, a banded form of chalcedony (cryptocrystalline quartz), has been used as a gemstone for over 7,000 years. Romans cut and polished agate, and this practice was taken to new heights in Germany in the 16th century.
Gold in Arizona
December 2010
We began investigating mining districts in Arizona and nearby states within the Basin and Range province. Just like I anticipated, there are many overlooked gold and copper deposits and anomalies.
We began investigating mining districts in Arizona and nearby states within the Basin and Range province. Just like I anticipated, there are many overlooked gold and copper deposits and anomalies.
Gold Refining In The Ancient World
March 2015
One thing that stood out for me is that Agricola was very specific about the type of metal or wood in the implements and vessels that were to be used.
Route Planning Using GPS
January 2019
My intention was to end this discussion with waypoints and routes, then I found USGS maps of the Plainfield Quadrangle.
Miners Still Waiting for Bonding Recommendations from DOI
June 2003
Bonding regulation changes went into effect in December 2001, requiring many small miners who had been operating under a Notice of Intent to obtain bonding for their operations.
Bonding regulation changes went into effect in December 2001, requiring many small miners who had been operating under a Notice of Intent to obtain bonding for their operations.
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