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Carbonatites
February 2005 by Edgar B. Heylmun, PhD
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.Proper Placer Sample Processing
...your sampling procedures should not be designed to catch gold your mining technique will never recover.
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Progress Continues in Honduras
May 2016He had meetings with Honduran officials at all levels, set up a new corporation called Raptor Mining in El Corpus, Honduras, and is in the process of establishing a non-profit called “Step Up for Honduras.”
Melman on Gold & Silver
Every financial writer enjoys a few moments of pleasure when one of his predictions is validated by the markets and your columnist is no exception.
The Significance of Nuggets in Placers
Chances are better that both types of gold did not come from the same source. Let's look at the probable conditions to cause two types of gold in a placer.
DEF Has Another Successful Year
A relaxing trip was long overdue. The deadlines associated with assembling a magazine each month tend to wear on you after awhile. I needed a break. Several organizers of Dredge Earth First were...
Mining Tax Increase Suggested
Earlier this year when gold topped $1,000 an ounce, Gibbons, a former mining geologist and lawyer, vowed to veto any bill that called for increasing mining taxes in 2009.
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• Looking Back
