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The Other Minerals of Mt. Diablo
January 2000 by Richard H. Peterson, PhD
Although it is now known that Mount Diablo, located in Contra Costa County in the East Bay region of the San Francisco Bay Area, was the site of the largest coal mining operation in the state during the last half of the 19th century... this majestic focal point... also was the source of other minerals.The Bombarded 38' Parallel
A 1,200-mile long east-west zone, containing unusual geologic features, has been recognized in the eastern half of the United States for over 100 years. It coincides, in a general way, with the 38° parallel. There are as many opinions on the origin of the features as there are geologists. Most of the features are circular or oval in form, and some are concealed by younger rocks. They are found in 8 states, from Kansas east to Virginia.
Melman on Gold & Silver
As noted on page 26 of this publication, your columnist spent five days in January immersed in two important conventions regarding precious metals mining and, of all the pieces of information bandied about within the mining community, one unbelievable set of numbers, little known or noticed by the public—but of immense potential impact on our world of gold and silver...
Update: Public Lands for the People
Coeur Alaska Hopes to Begin Work on Gold Mine This Fall
On a recent afternoon, Rick Richins fished a large piece of quartzite ore studded with glittering particles from the floor of a dark, dripping tunnel at the Kensington gold mine.
The Bawl Mill
• The dirty truth about clean energy
• By the numbers
Legislative and Regulatory Update
• Salmon populations and the ESA
• Miners need to get involved in Utah
Spencer Opal Deposits, Idaho
In order to give the reader a better appreciation of some alternative valuable minerals that can be found by the average prospector, we visited Bob Thompson’s Opal Mountain Mine located in Spencer, Idaho.
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The Bawl Mill
• Over the Divide
• Our Readers Say
• Letter from the Editor to our Readers and Advertisers
• Administration Considers Bypassing Congress
• First Woman to Draw Mining Pension
• Small Mine Selective Blasting
• Mohave Mountain Placers, Arizona
• High Court to Reconsider Wilderness Water Rights
• Sixteen to One Takes on MSHA
• Picks & Pans: Gold Mining on Joie Osgood Ranch
• Gold
• Company Notes
• Millie's Tailings
• Placer PGMs in Alaska
• Mogollon—New Mexico's Remote Gold Camp
• ICMJ 9th Annual Photo Contest Results
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
• Looking Back
