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.
Excerpts from CMJ published 50 years ago this month.
A new report predicts brighter days for mining in Nevada if the price of gold maintains at current levels.
Agate, a banded form of chalcedony (cryptocrystalline quartz), has been used as a gemstone for over 7,000 years. Romans cut and polished agate, and this practice was taken to new heights in Germany in the 16th century.
Fundamental information on gold and silver turned more to the bullish side this past month, and we can point to three particular items as the basis for that conclusion.
Here's the kicker—for every lost flake there was a five minute penalty added to the time. Lost gold generally meant you didn't make it past the preliminaries.
The Nevada Senate introduced SB108 in 2009 to prohibit PVC piping utilized by miners to stake mining claims.
The view from the pass at 16,500 feet elevation was astonishing. In one direction, one range of the Andes Mountains rose to over 18,000 feet, while in the other direction the peaks soared to almost 20,000 feet.
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