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Gold Deposits in Skarn
July 2003 by Edgar B. Heylmun, PhD
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.Additional articles that might interest you...
Metals Trader Blows the Whistle on Gold & Silver Price Manipulation
May 2010
Maguire and the traders and companies they represent were all aware of the price manipulation and were all profiting from it, but it became such a regular occurrence that his conscience told him it was time to put a stop to it. That’s when he contacted the CFTC.
Maguire and the traders and companies they represent were all aware of the price manipulation and were all profiting from it, but it became such a regular occurrence that his conscience told him it was time to put a stop to it. That’s when he contacted the CFTC.
Alluvial Fans
April 2002
Alluvial fans are essentially dry land “deltas” which can be found in all climates. However, they are best developed in arid and semi-arid regions, where they may be many square miles in area. They are built up by outpourings of silt, sand, and gravel caused by seasonal run-off, as well as by boulders and cobbles carried by flash floods.
Alluvial fans are essentially dry land “deltas” which can be found in all climates. However, they are best developed in arid and semi-arid regions, where they may be many square miles in area. They are built up by outpourings of silt, sand, and gravel caused by seasonal run-off, as well as by boulders and cobbles carried by flash floods.
Looking Back
May 2000
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.
Fields of Gold
August 2001
Imagine being able to get gold from plants. This phenomenon is called phytomining. But it’s not as easy, or as profitable, as it sounds. You may have heard of phytoremediation—the process of extracting metal contaminants from soil.
Imagine being able to get gold from plants. This phenomenon is called phytomining. But it’s not as easy, or as profitable, as it sounds. You may have heard of phytoremediation—the process of extracting metal contaminants from soil.
The Art of Finding Coarse Gold Part II—Pocket Hunting for Residual Placers
January 2005
It is a fact that many of the well-known placer districts of the Western US have small veins that contain sparse pockets of coarse gold as their source. This is the main reason why many rich placer districts have seen little or no hard rock mining...
It is a fact that many of the well-known placer districts of the Western US have small veins that contain sparse pockets of coarse gold as their source. This is the main reason why many rich placer districts have seen little or no hard rock mining...
Legislative and Regulatory Update
September 2000
• Idaho EPA may pare back agressive water stance
• House panel recommends changing federal mineral royalty
• Gold mining company raises funds to fight initiative
• Comment period extended
• Idaho EPA may pare back agressive water stance
• House panel recommends changing federal mineral royalty
• Gold mining company raises funds to fight initiative
• Comment period extended
The Golden Highway—El Dorado County
August 2004
Continuing northward and crossing the Consumnes River along California’s famed Highway 49, the “Golden Highway” leads through the heart of the Mother Lode countryto El Dorado County. This is where the Gold Rush began...
Continuing northward and crossing the Consumnes River along California’s famed Highway 49, the “Golden Highway” leads through the heart of the Mother Lode countryto El Dorado County. This is where the Gold Rush began...
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The Bawl Mill
• Our Readers Say
• PLP Members Win Occupancy Case—Appeals Continue
• Prospecting for Iron in Alaska
• Picks & Pans: Highbanking on the American River
• Platinum Firm, Palladium to Remain Weak
• Spencer Opal Deposits, Idaho
• Company Notes
• Hillside Placers
• Elko Mining Expo a Success
• Gold Prospecting in Alberta
• National Mining Hall of Fame to Induct Six
• Mining Stock Quotes and Mineral & Metal Prices
• Melman on Gold & Silver
• Looking Back
