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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...
Gold in Vermont
August 2005
The principal gold belt in Vermont extends south from the Canadian border along the east side of the Green Mountains, as far south as the Massachusetts line. The entire region was glaciated during the Great Ice Age and the glaciers contained streaks of finely-divided gold, so some of the gold found in Vermont originated in what is now Canada.
The principal gold belt in Vermont extends south from the Canadian border along the east side of the Green Mountains, as far south as the Massachusetts line. The entire region was glaciated during the Great Ice Age and the glaciers contained streaks of finely-divided gold, so some of the gold found in Vermont originated in what is now Canada.
The Furnace Atmosphere During the Fire Assay
January 2001
It has been claimed that the introduction of excess air to the assay furnace during sample fusion can materially increase the gold yield. Testimony by expert witnesses for the defense in recent federal hearings dealing with the dependability of the gold fire assay includes data purported to show this.
It has been claimed that the introduction of excess air to the assay furnace during sample fusion can materially increase the gold yield. Testimony by expert witnesses for the defense in recent federal hearings dealing with the dependability of the gold fire assay includes data purported to show this.
Jim Butler's Political Career
August 1999
The Nevada Historical Society's "This Was Nevada" Series
The Nevada Historical Society's "This Was Nevada" Series
Guest Editorial—Exploiting Tragedy
November 2001
While the world is focused on the war on terrorism, rumors persist that sinister forces inside the beltway are looking for ways to attach a train-load of pork to an emergency appropriations bill.
While the world is focused on the war on terrorism, rumors persist that sinister forces inside the beltway are looking for ways to attach a train-load of pork to an emergency appropriations bill.
Melman on Gold & Silver
April 2003
Never have I regretted the deadlines we must work with at this publication as I do this month, for events of tremendous significance are likely to occur between the time this column must be prepared and the time our readers will receive it.
Never have I regretted the deadlines we must work with at this publication as I do this month, for events of tremendous significance are likely to occur between the time this column must be prepared and the time our readers will receive it.
January Issues Delayed For Weeks As USPS Searches Their Facility
February 2006
“Neither rain nor sleet nor snow...” How does that saying go?
“Neither rain nor sleet nor snow...” How does that saying go?
Mud Creek Placer Mine Adventure
March 2003
Gerald Lindsey sat at his desk watching Randy McKinney try to absorb the massive pile of documents he had in front of him. Julie Fowler, Gerald’s secretary of 13 years, tried not to concentrate on the tower of paper as it threatened to topple over. Gerald knew the contents contained data proving one of the richest gold fields in Alaska were on his claims. But how to convince Randy, who was a 4th generation miner and had heard every mining story in the book?
Gerald Lindsey sat at his desk watching Randy McKinney try to absorb the massive pile of documents he had in front of him. Julie Fowler, Gerald’s secretary of 13 years, tried not to concentrate on the tower of paper as it threatened to topple over. Gerald knew the contents contained data proving one of the richest gold fields in Alaska were on his claims. But how to convince Randy, who was a 4th generation miner and had heard every mining story in the book?
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