All Articles
Flat-Fault Gold in Sonora, Mexico
July 2004 by Edgar B. Heylmun, PhD
Mexico is not noted for gold, but is better known for silver and copper. However, the states of Chihuahua and Sonora, in northwestern Mexico, contain some sizeable gold deposits. A number of these deposits were mined during the boom of 1982-2002. One operation that has remained active up to the present is La Herradura Mine...The Small Hardrock Mill—Part I
Ore dressing is of prime importance to the operator of a small hardrock gold mine. No, Virginia, ore dressing has nothing to do with dressing in the latest spring dresses, or the stuff that gets forced into the turkey on Thanksgiving. It refers to the method of processing ore to extract the valuable minerals contained in the rock—in the case of this series of articles, gold and silver.
Quit While You’re Goin’ Good
Then I came to a section of recently exposed gravel that looked unworked. Water seeped out all around, making the ground beneath a sea of slick mud.
The Bawl Mill
• Can you hear me now?
• IRS = Irresponsible, Renegade Scoundrels
• The $293 million dollar nap
Technology Opens Promise, Perils of Ocean Mining
There’s gold in that thar sea floor. Silver, copper, zinc and lead, too. The problem is, it’s a mile or two underwater and encased in massive mineral deposits that layer a dark, mysterious world.
Gold Prospecting for Better or Worse: How Curiosity Burst My Platinum Bubble
What are they? They are too hard to be lead, and are not tarnished like silver should be.
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The Bawl Mill
• Mining Claim Fees Are Going Up
• Our Readers Say
• Buell Park Pipe, Arizona
• Mines and Money
• Understanding Hard Rock Mining: Terms and Methods—Part II
• Two Nevada Mines Look to Supply Own Power
• Paleontonlogical Resources Preservation Act
• Picks & Pans: Mexican "Edventure"
• Over the Divide
• Looking Back
• The Fern Mine
• Map Offers Look at Butte's Mining History
• Gold in China
• 2004 National Mining Hall of Fame Inductees
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
