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Understanding and Evaluating Desert Mineralization for Nuggetshooters
July 2005 by Jim Straight
The primary source of many dryplacers is from the weathering of small to large hardrock sulphide ledges to yield free-gold, soluble salts and iron oxides. Placer gold, both large and small nuggets, can be found from the top inch down...
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Oil Seeps in Northern California
July 2001
Indians used asphalt from oil seeps in California for caulking boats and other objects long before the white man arrived. Spaniards noted seeps as early as 1542, and the Portola expedition in 1769 used oil for wagon axles and as a fuel. Spaniards also used crude stills for obtaining lamp oil for use in the missions.
Indians used asphalt from oil seeps in California for caulking boats and other objects long before the white man arrived. Spaniards noted seeps as early as 1542, and the Portola expedition in 1769 used oil for wagon axles and as a fuel. Spaniards also used crude stills for obtaining lamp oil for use in the missions.
Enrichment of Mineral Deposits by Weathering—Part I
March 2016
The exact minerals formed in the concentrated supergene deposits depends much on the type of country rock around the deposit and the chemistry of the deposit itself, but if conditions are right, this process will form some rich patches of bonanza ore, in some places valued at thousands of dollars to the ton.
The exact minerals formed in the concentrated supergene deposits depends much on the type of country rock around the deposit and the chemistry of the deposit itself, but if conditions are right, this process will form some rich patches of bonanza ore, in some places valued at thousands of dollars to the ton.The Stonewall Jackson Mine, San Diego County, California
July 2001
For obvious reasons southern California is not known historically for its gold mines. Gold production was concentrated heavily in the Sierra Nevada foothills in the northern part of the state. However, the high mountainous region of eastern San Diego County was the site of a number of productive hardrock gold mines, notably in the late 19th century.
For obvious reasons southern California is not known historically for its gold mines. Gold production was concentrated heavily in the Sierra Nevada foothills in the northern part of the state. However, the high mountainous region of eastern San Diego County was the site of a number of productive hardrock gold mines, notably in the late 19th century.
History of Oil in California
February 2001
Oil is a naturally occurring combustible fluid of organic origin that is commonly found in California and in many other parts of the world.
Oil is a naturally occurring combustible fluid of organic origin that is commonly found in California and in many other parts of the world.
Miners Fight Back Against Road Closures
July 2014
In the meeting, we presented Ms. Skalski with the various court cases from the 9th Circuit Court on these settled law cases and she was mortified.
In the meeting, we presented Ms. Skalski with the various court cases from the 9th Circuit Court on these settled law cases and she was mortified.
Gold in the Rattlesnake Hills
October 2009
The Rattlesnake Hills (RSH) in central Wyoming had been overlooked for gold, even though it had all of the earmarks of being a major gold district.
The Rattlesnake Hills (RSH) in central Wyoming had been overlooked for gold, even though it had all of the earmarks of being a major gold district.
Legislative and Regulatory Update
July 2003
• USFS Draft Reclamation Bond Guide needs your comments
• Colorado seeks ownership of rights of way
• Comments needed for Sierra Nevada EIS
• Roadless rule to stand, with a few changes
• USFS Draft Reclamation Bond Guide needs your comments
• Colorado seeks ownership of rights of way
• Comments needed for Sierra Nevada EIS
• Roadless rule to stand, with a few changes
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The Bawl Mill
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• Mining Stock Quotes and Mineral & Metal Prices
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