All Articles
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...
Diamond Fever
February 2000
In South Africa, a "gregory" is the term applied to a blunder of major proportion. James Gregory will forever be remembered in South African slang as the professor from Great Britain who made one heck of a "gregory."
In South Africa, a "gregory" is the term applied to a blunder of major proportion. James Gregory will forever be remembered in South African slang as the professor from Great Britain who made one heck of a "gregory."
Swiss Mining Company Demands Compensation From Bolivia
March 2007
Glencore International AG demanded compensation from Bolivia’s government for nationalizing a tin smelter owned by the Swiss mining company.
Glencore International AG demanded compensation from Bolivia’s government for nationalizing a tin smelter owned by the Swiss mining company.
Four Arrested for California Mining Museum Heist
December 2012
Four men believed to be responsible for a September heist of about $1.3 million in precious gems and gold from a mining museum in the Sierra Nevada foothills have been arrested, the California Highway Patrol (CHP) said.
Four men believed to be responsible for a September heist of about $1.3 million in precious gems and gold from a mining museum in the Sierra Nevada foothills have been arrested, the California Highway Patrol (CHP) said.
Mud Creek Placer Mine
April 2003
Continued from last month...
The Mud Creek Placer Mine is a true quest. Previously we acknowledged the rich reserves contained in the ground near Candle, Alaska. Now the miners and equipment need to find their way there and start the operation.
Continued from last month...
The Mud Creek Placer Mine is a true quest. Previously we acknowledged the rich reserves contained in the ground near Candle, Alaska. Now the miners and equipment need to find their way there and start the operation.
Looking Back
March 2002
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.
Detecting for Possible Mid-Range Eluvial Gold
September 2006
Actually, this mid-range gold zone can exist in any eluvial placer field with a shallow zone where the ground “tightens up” below the loosely packed surface dirt to harder packed dirt. However, its presence depends upon several factors:
Actually, this mid-range gold zone can exist in any eluvial placer field with a shallow zone where the ground “tightens up” below the loosely packed surface dirt to harder packed dirt. However, its presence depends upon several factors:
ICMJ's 11th Annual Photo Contest Results
January 2002
As usual, the decision process was extremely difficult, but we managed to pick our 10 winners.
As usual, the decision process was extremely difficult, but we managed to pick our 10 winners.
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The Bawl Mill
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