All Articles
Gondwana Gold and Diamonds
October 2002 by Edgar B. Heylmun, PhD
Some 250 million years ago, the Earth had just one supercontinent, known as “Pangaea.” For whatever reason, the supercontinent began to break apart. South America and Africa remained joined, as “Gondwana,” until 65 million years ago, when they split apart. The obvious “fit” of South America with Africa was noted by geologists back in the 19th century, but it was not until Alfred Wegener came out with his “continental drift” hypothesis in 1912 that people took note.Additional articles that might interest you...
Gold Refining In The Ancient World
March 2015
One thing that stood out for me is that Agricola was very specific about the type of metal or wood in the implements and vessels that were to be used.
Editorial
February 2002
Congressmen Richard W. Pombo and John E. Peterson’s Response to Planting of False Evidence by Environmental Extremists
Congressmen Richard W. Pombo and John E. Peterson’s Response to Planting of False Evidence by Environmental Extremists
U.S. Dept. of Interior Inspectors in Arizona
March 2000
Glynn Burkhardt, president of the Arizona Small Mine Operators Association, has a small mine outside of Tucson, Arizona. He recently received a visit from U.S. Department of Interior...
Glynn Burkhardt, president of the Arizona Small Mine Operators Association, has a small mine outside of Tucson, Arizona. He recently received a visit from U.S. Department of Interior...
Legislative and Regulatory Update
June 2002
• California Senator proposes locking up 2.5 million acres with "Wildnerness" designation
• Battle over the rights of people versus fish continues in the Klamath Basin
• Sound science or "fairy tales"
• California Senator proposes locking up 2.5 million acres with "Wildnerness" designation
• Battle over the rights of people versus fish continues in the Klamath Basin
• Sound science or "fairy tales"
Eolian Gold Deposits
February 2014
Prospectors who specialize in electronic detecting for nuggets in desert areas are especially interested in this type of deposit, as it yields nuggets that are close to the surface of the ground...
Prospectors who specialize in electronic detecting for nuggets in desert areas are especially interested in this type of deposit, as it yields nuggets that are close to the surface of the ground...
Melman on Gold & Silver
September 2010
From the mining community’s point of view, it is important to stop the parade of complex laws and regulations that continue to interfere with huge segments of the economy. This gives the upcoming election even greater importance directly relating to our precious and base metals mining industries.
From the mining community’s point of view, it is important to stop the parade of complex laws and regulations that continue to interfere with huge segments of the economy. This gives the upcoming election even greater importance directly relating to our precious and base metals mining industries.
Gold in Jasperoid
February 2000
Jasperoid is a jasper-like siliceous rock, in which chalcedony or cryptocrystalline quartz has replaced limestone, dolomite, or shale. It forms the gangue of many important ore bodies. It is stained by iron and manganese oxides into shades of...
Jasperoid is a jasper-like siliceous rock, in which chalcedony or cryptocrystalline quartz has replaced limestone, dolomite, or shale. It forms the gangue of many important ore bodies. It is stained by iron and manganese oxides into shades of...
Subscription Required:
The Bawl Mill
• Our Readers Say
• Placer Gold in Idaho
• Working the Belmont Mine Butte, Montana—1953
• Simple Sluice Design
• Cobalt and Nickel in Missouri
• Sunshine Mine Video Brings Back Painful Memories
• Hardrock Detecting
• Gold Garbage: Scams New & Old
• Company Notes
• Picks & Pans: Confessions of a Professional Nuggetshooter
• Looking Back
• Ghost Towns of Washington County, Utah
• The Fire Within
• 2002 California State Gold Panning Championships—Foresthill, California
• Mining Stock Quotes and Mineral & Metal Prices
• Melman on Gold & Silver
