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Epithermal Gold-Quartz Veins
January 2004 by Edgar B. Heylmun, PhD
The great mining geologist Waldemar Lindgren used the word “epithermal” to describe a type of quartz vein commonly found in desert regions of the United States and Mexico.Additional articles that might interest you...
Looking Back
October 1999
Excerpts from California Mining Journal, our original title, published 50 years ago this month.
Excerpts from California Mining Journal, our original title, published 50 years ago this month.
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.
Our Readers Say
February 2018
News From GATA
September 2001
The Gold Anti-Trust Action Committee (GATA) recently reported some new information in their quest to expose manipulation of the gold markets by the government and central banks.
The Gold Anti-Trust Action Committee (GATA) recently reported some new information in their quest to expose manipulation of the gold markets by the government and central banks.
Melman on Gold & Silver
August 2016
It is hard to imagine any month during the thirty years I have been writing this column which had more bombshell headlines than the past thirty days.
It is hard to imagine any month during the thirty years I have been writing this column which had more bombshell headlines than the past thirty days.
The Bawl Mill
July 2003
• Don't go near the water...
• Accused drug smuggler can sue the US government
• This won't look good on a resume...
• Nature Conservancy caught with hand in the cookie jar
• Don't go near the water...
• Accused drug smuggler can sue the US government
• This won't look good on a resume...
• Nature Conservancy caught with hand in the cookie jar
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The Bawl Mill
• From the Editor
• Our Readers Say
• Forest Occupancy Decision Stands—US Forest Service Withdraws Appeal
• World Gold Council Launches New Gold Bullion Securities
• Gold in Arkansas
• Picks & Pans: Winter Prospecting and "Forty Mile" Miller
• Company Eyes Reopening Mine Near Troy
• ICMJ's 13th Annual Photo Contest
• Company Notes
• A Guide to Overlooked Gold Deposits—Part V (Conclusion)
• The Golden Highway—Calaveras County
• Mining Stock Quotes and Mineral & Metal Prices
• Melman on Gold & Silver
