The Fire Assay of Fly Eyes
July 2002 by Dr. Ralph E. PrayColorado-Utah-Wyoming oil shale was first reliably discovered to contain gold and silver by the U.S. Bureau of Mines in the 1920s. Although most of this vast shale resource, up to 1,000 feet in thickness, contained nil or barely detectable values, many brown shale samples fire assayed here over the past thirty years have yielded up to 0.02 ounces per ton (opt) Au and 2.0 opt Ag.
Winters are a great time to explore the hills in the area of the Middle Camp, Oro Fino and La Cholla placers on the southern flank of the Dome Rock Mountains.
The problem is that extracting gold from hard rock is often a lot more difficult than processing placer gravels. Still, there is some very high-grade ore out there in many old mining areas.
The key to returning Montana’s economy to its glory days is to remove the laws that prevent development of the state’s natural resources, says Thomas Keating, the only Republican who has declared himself a candidate for governor.
To the writer's knowledge, this was the first discovery of silver and lead in North Carolina and perhaps one of the first official discoveries of silver east of the Mississippi River.
The Candelaria area is of interest to prospectors not just for silver, gold and other metals, but also for the beautiful gemstones found there.
The Arizona mine and town that eventually became known as Mowry actually started with the discovery of a rich ledge of silver by either Spanish Jesuit priests or Spanish soldiers around 1736.
The Bawl Mill • Our Readers Say • Siskiyou National Forest Update • Company Looks at Restarting Sunshine Mine • Piedmont Gold • Gold & The Dollar • Picks & Pans: Exploring Wyoming's High Desert • Sons of Gwalia & Herbert Hoover • Looking Back • Prospecting on the Yukon River • Placer Gold in Arizona • Bill Could Create New Silver Market • 2002 Inductees to the National Mining Hall of Fame • Mining Stock Quotes and Mineral & Metal Prices • Melman on Gold & Silver • Mystery of Olmec Jade Solved