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Buell Park Pipe, Arizona
July 2004 by Edgar B. Heylmun, PhD
One of the world’s largest kimberlite pipes is located on the Navajo Indian Reservation in northern Arizona. The pipe is larger than any diamond-bearing pipe in South Africa. It is 16 miles north of Window Rock, the capital of the Navajo Nation.
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Gully Prospecting and Mining
September 2014
This article is about our recent gold prospecting adventure, which has yielded over 20 ounces of specimen gold—with more to come.
This article is about our recent gold prospecting adventure, which has yielded over 20 ounces of specimen gold—with more to come.
Ask the Experts
June 2014
• Recovering platinum
• Recovering platinum
Melman on Gold & Silver
July 2006
Several years ago one of the most important persons on the American political scene was Ross Perot, an independent candidate for President. His favorite campaign theme was railing against (NAFTA) and his claim was that...
Several years ago one of the most important persons on the American political scene was Ross Perot, an independent candidate for President. His favorite campaign theme was railing against (NAFTA) and his claim was that...
Central Idaho Federal Employees Back to Work With Local Help
December 2016
The fire started early October 4, destroying the Bureau of Land Management office on the edge of town within minutes.
The fire started early October 4, destroying the Bureau of Land Management office on the edge of town within minutes.
Gold in Alabama
May 2003
Alabama, 52,423 square miles in area, lies at the southwestern end of the Appalachian Mountains. The highest point in the state is only 2,407 feet above sea level. Summers are long and humid, whereas winters are mild.
Alabama, 52,423 square miles in area, lies at the southwestern end of the Appalachian Mountains. The highest point in the state is only 2,407 feet above sea level. Summers are long and humid, whereas winters are mild.
The Bawl Mill
November 1999
• Are you paying for others' risk-taking?...
• They call it the "impalement captial of the United States"—and not to be funny!...
• Are you paying for others' risk-taking?...
• They call it the "impalement captial of the United States"—and not to be funny!...
Gold in Iceland?
December 2001
Normally, one does not look at volcanic islands in a search for gold. However, rich gold deposits have been found in or near volcanoes at Lihir and Misima Islands near New Guinea, so one cannot dismiss gold opportunities on volcanic islands. All of Iceland is of volcanic origin, with acidic volcanic rocks like rhyolite and granophyre being present at a few localities.
Normally, one does not look at volcanic islands in a search for gold. However, rich gold deposits have been found in or near volcanoes at Lihir and Misima Islands near New Guinea, so one cannot dismiss gold opportunities on volcanic islands. All of Iceland is of volcanic origin, with acidic volcanic rocks like rhyolite and granophyre being present at a few localities.
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• Over the Divide
• Flat-Fault Gold in Sonora, Mexico
• Looking Back
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• Gold in China
• 2004 National Mining Hall of Fame Inductees
• Melman on Gold & Silver
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