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.
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.
The company that wants to build and operate the mine, Rare Element Resources Ltd., promises high-wage jobs and economic vitality to an area where 40 percent of the population is age 50 or older.
Three homonyms come to mind when I think of gemstones, gold and vegetables: carrot, carat and karat. Let’s look at carrot first.
With all of the erosion patterns wearing away the channels down into the North Fork of the Middle Fork, we assumed placer gold was still available in the river. The question became: How do we get down the 1,600-foot elevation drop to reach the river?
Modoc County, California, is the latest county to use emergency powers to declare a state of emergency in order to take control of roads and trails away from federal agencies.
There is always an overwhelming feeling when finding gold of any size, but one like this doesn’t come along very often.
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