Epithermal Ore Deposits Associated With Tertiary Volcanism—And the Feasibility of Metal Detecting for Them
December 2000 by Jim StraightEpithermal ore deposits are common in regions of late volcanic activity, especially areas associated with Miocene and later Pliocene extrusive volcanics that have not been deeply eroded since the ore was deposited. Many are simple fissure veins, but stock-works and ore-pipes are also common.
The University of Nevada, Reno, and the Department of Mining Engineering at the Mackay School of Earth Sciences and Engineering, have teamed up to provide an online course in mineral processing.
Most of the world's great gold mines are in secondary (supergene) enrichments in veins and stockwork, brought about by physical and chemical processes.
Watching a computer screen, Pat Drummond monitors a complex system of pipelines and vats that produce 55-gallon drums of uranium, weighing 600 to 1,000 pounds each, ready to be shipped to nuclear power plants across the globe.
As I have always done, I stashed those heavy black rocks in my pack and put them in the garden at home. They never were given a second thought until a half decade later…
Q: ...He consistently comes up with values much higher on the same ore samples.
In Canada we are blessed with a multitude of ways of acquiring gold. We can buy a gold ounce leaf from the bank, buy gold in a jewelry store, purchase gold stocks on the stock market, or dig for it ourselves. If we add gold theft to the list we add...
The Gold Anti-Trust Action Committee (GATA) recently reported some new information in their quest to expose manipulation of the gold markets by the government and central banks.
The Bawl Mill • Letter to the Editor • Potaro District, Guyana • World Gold Council Launches $3 Million Ad Campaign • Prospecting With Color • Prospecting for Platinum in Wyoming • Picks & Pans: More Big River Dredging in Northern California • A Changing Diamond Industry Looks to Canada for Growth • History of Mining—Bradshaw Mountains, AZ—Part II • Company Notes • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices