All Articles
Oil Seeps in Arizona
December 2003 by Edgar B. Heylmun, PhD
Compared to California, Arizona has virtually no oil seeps. But, the great Permian Basin of West Texas has virtually none either. Arizona has something that neither California nor Texas have, and that is public lands that are open for leasing. The northern half of Arizona has more seeps and is thus of greater interest, but it would be foolish to disregard the southern half because giant oil and natural gas fields could underlie some of the broad desert valleys.Additional articles that might interest you...
Which Specific Gravity Test Works Best?
August 2011
Have you ever wondered how accurate specific gravity tests are in determining the amount of gold in a specimen?
Have you ever wondered how accurate specific gravity tests are in determining the amount of gold in a specimen?
Picks & Pans: "Eye-Balling" for Alaskan Gold
May 1999
The gold miner held out his hand and showed me a sixteen-ounce gold nugget, slightly coarse in texture, and resembling a biscuit. I shook my head in amazement as he pointed out the exact location of his lucky find.
The gold miner held out his hand and showed me a sixteen-ounce gold nugget, slightly coarse in texture, and resembling a biscuit. I shook my head in amazement as he pointed out the exact location of his lucky find.
Working on the Bear River
January 2007
Further downstream our motorized equipment was in play. One power sluice was going a lot, with a crew of four getting familiar with the equipment and working hard to create a holding pond to prohibit the muddy water and the...
Further downstream our motorized equipment was in play. One power sluice was going a lot, with a crew of four getting familiar with the equipment and working hard to create a holding pond to prohibit the muddy water and the...
The Bawl Mill
October 2007
• Something smells fishy
• Australian government underestimates its youth...
• Membership has its privileges
• Bridge over troubled waters
• Something smells fishy
• Australian government underestimates its youth...
• Membership has its privileges
• Bridge over troubled waters
VMS Deposits in Central Arizona
October 2004
Volcanogenic Massive Sulfide (VMS) deposits in the Central Arizona Precambrian volcanic belt occur within a felsic package of volcanic rocks capped by an exhalite unit comprised of cherts, iron formations and siliceous members.
Volcanogenic Massive Sulfide (VMS) deposits in the Central Arizona Precambrian volcanic belt occur within a felsic package of volcanic rocks capped by an exhalite unit comprised of cherts, iron formations and siliceous members.
Company Notes
September 2001
• Royal Gold, Inc.
• Placer Dome, Inc.
• Royal Gold, Inc.
• Placer Dome, Inc.
Shirttail Creek
December 2009
Shirttail was worked heavily in the old mining years, but they didn’t clean it out. Present day prospectors and dredgers have done well, especially as Shirttail gets closer to the North Fork of the American.
Shirttail was worked heavily in the old mining years, but they didn’t clean it out. Present day prospectors and dredgers have done well, especially as Shirttail gets closer to the North Fork of the American.
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The Bawl Mill
• Searching for Placer Diamonds
• Lawsuit on Alleged Market Manipulation Continues
• Texas "Hill Country" Gold
• A Guide to Overlooked Gold Deposits—Part IV
• Picks & Pans: Detecting in Northern Nevada
• Miners Welcome Comments by Alaska Official
• Company Notes
• Spectacular Specimens Found in Northern Nevada
• New Life for the Suction Nozzle
• Looking Back
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
