November 2005 by Staff• Inco, Ltd.
• Falconbridge, Ltd.
• Pathfinder Resources, Ltd.
• Diamonds North Resources, Ltd.
• Newmont Mining
• Couer Alaska
What could be the first underground gold mine to open in Montana in at least a decade is proposed near the ghost town of Elkhorn in Jefferson County, Montana.
Wall-rock (country rock) alteration is found in all hard-rock mining districts and has been caused by hydrothermal solutions in the past history of the region. The zones of alteration have a bearing on where one might drill for ore bodies. The weekend prospector does not have the tools nor knowledge to block out ore deposits, but he can narrow down his search dramatically by understanding the zones of wall-rock alteration that he sees.
During my adventures I’ve learned a few key best practices that help me to consistently find gold nuggets with my detectors. You can apply many of these best practices to any type of prospecting. These best practices are really common sense; however, they are easy to neglect.
The favorable geology of the northeastern and central parts of the Seven Troughs Range are the parts most interesting to prospectors. They are underlain by a thick sequence of Tertiary volcanic rocks, mostly rhyolites and andesites.
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Although the potential for fortunes to be made from the commercial mining of this rich glacial gravel conceivably exists, so far no large mining company has shown any serious interest in it.
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