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Throw-Away Gold: Back to Basics
February 2002 by T.D. LaRune
Placer mining, whether for profit or recreational purposes, involves separation of free gold from the gold-bearing sands (gangue) of alluvial deposits by methods using specific gravity. The free gold can vary from 17 to 19.3 in specific gravity terms, depending on the alloy mix, which is usually silver, but can be copper, lead, sulfur, tellurium, antimony, or mercury.The Bawl Mill
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PLP Update
If this authority over mining was not included in the transfer, then the US Forest Service would not have jurisdiction.
Carbonatites
Carbonatites are rocks that formed from molten calcite or dolomite. The thought of calcite being molten lava is difficult to accept, but it was confirmed when it poured out of a vent in Tanzania in 1960.
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NOI or POO for small backhoe
Ask The Experts - Is this prospect worth sampling?
Deadly Storms May Expose Gems in Sri Lanka
Floods and landslides that struck Sri Lanka several months ago, killing 266 people, may bring a windfall for miners. The movement of tons of soil and rock is believed to have unearthed new gems according to local industry workers.
Ask The Experts
• Determining the amount of gold in a specimen
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