All Articles
Michigan DEQ Approves Upper Peninsula Mine
January 2008 by John Flesher
The Michigan Department of Environmental Quality approved permits allowing Kennecott Minerals, a subsidiary of Rio Tinto, to operate a nickel and copper mine in the Upper Peninsula.Additional articles that might interest you...
Gold Deposits in Skarn
July 2003
Skarn consists of coarse-grained calcium, magnesium, iron, and aluminum silicates formed by hydrothermal solutions, which replace limestone or dolomite near the contact with an igneous intrusion. The contact metamorphism is usually caused by an intrusion such as quartz monzonite, granodiorite, or similar rock type, which may or may not be mineralized.
Skarn consists of coarse-grained calcium, magnesium, iron, and aluminum silicates formed by hydrothermal solutions, which replace limestone or dolomite near the contact with an igneous intrusion. The contact metamorphism is usually caused by an intrusion such as quartz monzonite, granodiorite, or similar rock type, which may or may not be mineralized.
New Prospecting Guides Available Online
November 2004
Every year prospectors and rock hounds search Wyoming for gold, gemstones and other attractive rocks and minerals; the Wyoming State Geological Survey (WSGS) has now made this hunt easier.
Every year prospectors and rock hounds search Wyoming for gold, gemstones and other attractive rocks and minerals; the Wyoming State Geological Survey (WSGS) has now made this hunt easier.
Mining on the Comstock Lode
July 2014
Even with the decades of mining and exploration, much of the Comstock is still underdeveloped and its potential not fully tapped.
Even with the decades of mining and exploration, much of the Comstock is still underdeveloped and its potential not fully tapped.
The Lost Silver Triangle of the Sierra Madre—Part II
May 2008
Newspaper stories in the spring of 1887 credited Lieutenant Henry O. Flipper with discovering both the long-lost Guaynopa and Tayopa mines. Flipper was in Mexico City in late April and May and a reporter interviewed him.
Newspaper stories in the spring of 1887 credited Lieutenant Henry O. Flipper with discovering both the long-lost Guaynopa and Tayopa mines. Flipper was in Mexico City in late April and May and a reporter interviewed him.
The Bawl Mill
June 2012
• Home, home on the range...where the deer and the non-native antelope play
• Today's math lesson: Study x 3 = Taxpayer Waste
• Home, home on the range...where the deer and the non-native antelope play
• Today's math lesson: Study x 3 = Taxpayer Waste
The Nome Goldfields
November 2006
Nome has a colorful history built on gold, where over 5 million ounces of the yellow metal has been dug up. Due to limited space, only a tiny fraction of this mining district can be touched upon. It would take volumes to cover all the information...
Nome has a colorful history built on gold, where over 5 million ounces of the yellow metal has been dug up. Due to limited space, only a tiny fraction of this mining district can be touched upon. It would take volumes to cover all the information...
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The Journal Welcomes Chris Ralph as Associate Editor
• The Bawl Mill
• Global Hunter
• New Study of the Formation of Nuggets—Part II
• Let’s Go Crevicing for Gold
• Mining Restrictions Lifted in Southwest Alaska
• Silver Bonanza in the Sierra Madre: The Glorious Past of Batopilas—Conclusion
• 2007 Annual Photo Contest Winners
• Exploring La Trinidad Mine
• There’s Still Gold In Oregon’s Umpqua River
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
