All Articles
Flat-Fault Gold in Sonora, Mexico
July 2004 by Edgar B. Heylmun, PhD
Mexico is not noted for gold, but is better known for silver and copper. However, the states of Chihuahua and Sonora, in northwestern Mexico, contain some sizeable gold deposits. A number of these deposits were mined during the boom of 1982-2002. One operation that has remained active up to the present is La Herradura Mine...Additional articles that might interest you...
Legislative and Regulatory Update
September 2011
• Salazar pushes wilderness
• California Governor signs AB 120
• Salazar pushes wilderness
• California Governor signs AB 120
One of the Richest Beaches Ever Mined
April 2015
Everyone has heard of the golden beach at Nome, but Nome did not have the richest beach.
Everyone has heard of the golden beach at Nome, but Nome did not have the richest beach.
Idaho-Maryland Mine—History Restarted
August 2003
It was late October 1850, and, as the story goes, George McKnight was rushing along trying to round up his cows when he stumbled. He was not a happy man as he kicked the fist-sized rock in disgust. The disgust changed quickly to interest...
It was late October 1850, and, as the story goes, George McKnight was rushing along trying to round up his cows when he stumbled. He was not a happy man as he kicked the fist-sized rock in disgust. The disgust changed quickly to interest...
Gold in Suriname
June 2002
Suriname is a former Dutch colony on the north coast of South America, with an area of 63,000 square miles and a population of 450,000. Indians inhabited the region when Spaniards first sailed the coast in 1499.
Suriname is a former Dutch colony on the north coast of South America, with an area of 63,000 square miles and a population of 450,000. Indians inhabited the region when Spaniards first sailed the coast in 1499.
Mineralized Calderas in Colorado
May 2002
A caldera is a large circular volcanic depression caused by collapse due to the removal of molten magma from an underlying magma chamber. The removal of magma is due to explosive venting of lava and pyroclastic material.
A caldera is a large circular volcanic depression caused by collapse due to the removal of molten magma from an underlying magma chamber. The removal of magma is due to explosive venting of lava and pyroclastic material.
Gold
January 2000
Excerpted from the U.S. Geological Survey's 1998 Annual Review by Earle B. Amey, Gold Commodity Specialist.
Excerpted from the U.S. Geological Survey's 1998 Annual Review by Earle B. Amey, Gold Commodity Specialist.
The Bawl Mill
June 2008
• Taxpayers taken for a “ride”
• Fellow Congressmen, lend me your earmarks...
• Taxpayers taken for a “ride”
• Fellow Congressmen, lend me your earmarks...
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The Bawl Mill
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• Our Readers Say
• Buell Park Pipe, Arizona
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• Understanding Hard Rock Mining: Terms and Methods—Part II
• Two Nevada Mines Look to Supply Own Power
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• Picks & Pans: Mexican "Edventure"
• Over the Divide
• Looking Back
• The Fern Mine
• Map Offers Look at Butte's Mining History
• Gold in China
• 2004 National Mining Hall of Fame Inductees
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
