Understanding Geologic Deposit Models
May 2008 by Chris RalphGeologists have long noted the similarities of certain types of mineral deposits all across the globe. Similar minerals, similar country rocks, and similar grades of mineralization may occur in several different parts of the world.
Another California Assembly member, Jared Huffman, is attempting to ban dredging in the state on a more permanent basis.
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The Directory of Active Mines in Arizona-1999, just released by the Arizona Department of Mines and Mineral Resources, reflects the strength and diversity of the Arizona mining industry.
To add to the confusion, the dam wasn’t holding back a large amount of water. It was full of gravels and had a small creek running through it. I had to know more.
The specific gravity of chalcedony is 2.58 to 2.64. This is slightly lower than coarsely crystalline quartz because of slight porosity in chalcedony. Being so light, it will easily wash out of a gold pan.
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• Southern Era
• X-Cal Resources
• Placer Dome Inc.
• Pan American Silver Corp.
• Vista Gold Corp.
The Bawl Mill • Ask the Experts—Why doesn't the 1872 Mining Law apply to all 50 states? • Ask The Experts—Where do I find information about getting paid for raw gold? • The Lost Silver Triangle of the Sierra Madre—Part II • Prospecting for Diamonds • Avino’s Durango Project • Success With A Detector • Horsetail Gold • The Makorakoza of Zimbabwe—Centuries of Prospecting in Gold-Hosting Dolerites • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices