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Mineralized Calderas in Colorado

A caldera is a large circular volcanic depression caused by collapse due to the removal of molten magma from an underlying magma chamber. The removal of magma is due to explosive venting of lava and pyroclastic material.

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Lightning Creek, British Columbia


Lightning Creek is one of the famous placer gold streams in the Cariboo district of east-central British Columbia, Canada. It is 445 miles, by highway, north of Vancouver, some 50 miles east of the town of Quesnel (pop. 8,500).

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The Basics of Froth Flotation


I thought it might be worthwhile to take a look at the basics of this important mineral separation technique and how a miner can use it to recover the values out of an ore.

Legislative and Regulatory Update


• The ESA used, and apparently abused, in Arizona and New Mexico
• In a somewhat related story...
• Among the numerous bills that died when Congress adjourned...
• More on the ESA
• Miners must present proof of filing, says IBLA
• Federal government backs mining project
• Appeals Court says Clinton roadless rule can stay

Over The Divide: James H Harrand & Daniel Yesberger


Legislative and Regulatory Update


• Forest Service Oversteps Authority, Former Official Says
• Glamis Gold Ltd. Files Suit to Vacate Solicitor's Opinion
• Babbitt  Targets White Vulcan Mine and San Francisco Peaks in Arizona

Mining Stock Quotes and Mineral & Metal Prices


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The Bawl Mill   • Our Readers Say   • California Wilderness Coalition and The Nature Conservancy Recruit Government Employees to Carry Out Huge Land Grab   • Drywashing Rules Clarified   • The Keystone Gold-Copper District, Medicine Bow Mountains, Southeastern Wyoming   • Picks & Pans: Mining Tungsten Ore—A Case History   • Gold in Oregon   • Aussie Gold—A Look at the Northern Territory   • The Phoenix Gold Mine: A Brief History   • Calico Mine   • Mining Stock Quotes and Mineral & Metal Prices   • Looking Back   • Melman on Gold & Silver

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Legislative and Regulatory Update

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