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Altar District's Golden Lure
November 2001 by Robert P. Ezzo
The Altar District of Sonora, Mexico, stretches nearly 300 miles along the American border and approximately 200 miles along the Gulf coast. This particular district was noted for its rich placer deposits and gold ledges before the Spaniards ever settled the region. Several antiguas (Spanish mines) were later developed by the Europeans and were again being operated by the Americans as early as 1904.Additional articles that might interest you...
Collecting Garnets in Wyoming
April 2000
In Wyoming, garnets are often common where aluminum-rich (micaceous) rocks have been highly metamorphosed. Such rocks are recognized by abundant black (biotite), silver (muscovite), or green (chlorite) mica with periodic grains of red garnet.
In Wyoming, garnets are often common where aluminum-rich (micaceous) rocks have been highly metamorphosed. Such rocks are recognized by abundant black (biotite), silver (muscovite), or green (chlorite) mica with periodic grains of red garnet.
Melman on Gold & Silver
September 2013
It is difficult to look at unrestrained growth in such important monetary indicators without becoming concerned about the future stability of America's economic system.
It is difficult to look at unrestrained growth in such important monetary indicators without becoming concerned about the future stability of America's economic system.
East Coast Dredger Heads West—Part III
March 2009
There was an outcropping of exposed bedrock on the bank, and it again resurfaced in the river about 25’ away. I decided to start a hole near that exposed bedrock, and pointed the nozzle down into the sand and cobbles.
There was an outcropping of exposed bedrock on the bank, and it again resurfaced in the river about 25’ away. I decided to start a hole near that exposed bedrock, and pointed the nozzle down into the sand and cobbles.
Mud Men: Pocket Miners of Southwest Oregon—Part I
February 2011
Rocks and minerals associated with clay seam gold deposits in southern Oregon are often in sedimentary rock units at least partially metamorphosed into argillite. They are also associated with mafic volcanic rocks, basalts and gabbro that...
Rocks and minerals associated with clay seam gold deposits in southern Oregon are often in sedimentary rock units at least partially metamorphosed into argillite. They are also associated with mafic volcanic rocks, basalts and gabbro that...
The Bawl Mill
February 2006
• It’s good to be the president...of the teacher’s union
• Anyone need a 1040 form?
• Global warming turns a new leaf
• It’s good to be the president...of the teacher’s union
• Anyone need a 1040 form?
• Global warming turns a new leaf
Ask The Experts
June 2015
If it's gold, how should I clean it?
If it's gold, how should I clean it?
Resolution Copper Mine, Arizona
March 2005
The Resolution copper mine is near Superior, Arizona (population 3,500), along the west side of the Pinal Mountains in central Arizona, 64 miles east of downtown Phoenix. The region receives about 16 inches of rain per year, enough to support chaparral vegetation.
The Resolution copper mine is near Superior, Arizona (population 3,500), along the west side of the Pinal Mountains in central Arizona, 64 miles east of downtown Phoenix. The region receives about 16 inches of rain per year, enough to support chaparral vegetation.
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The Bawl Mill
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• Guest Editorial—Exploiting Tragedy
• Placer Gold in Utah
• President Bush: Put ANWR Drilling in Energy Bill
• Aussie Gold
• Picks & Pans: Working the Ol' Paystreak
• High Country Dredging in Kaufman Creek, Colorado
• How to Become a More Successful Nugget Detectorist—And Basic Information on Machines
• The Manson Mine
• California State Gold Panning Championship Results
• Gold in Panama
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
