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Detecting Invisible Gold
April 2009 by Chris Ralph
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The technology certainly has improved quite a bit over the years, so when these owners are testing various types of gold on their machines and they find that some gold responds poorly or not at all...
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Legislative and Regulatory Update
January 2019
- Zinke leaving office
- Property rights triumph over critical habitat says Supreme Court
- Water of the United States
Gold at Ragged Top, Arizona
April 1999
Ragged Top is a jagged mountain which rises to an elevation of 3,907 feet near the Silver Bell open-pit copper mine, some 34 airline miles northwest of downtown Tucson. It is an outlier of the Silver Bell Mountains...
Ragged Top is a jagged mountain which rises to an elevation of 3,907 feet near the Silver Bell open-pit copper mine, some 34 airline miles northwest of downtown Tucson. It is an outlier of the Silver Bell Mountains...
Mineralized Faults and Contacts in the Search for Gold
January 2016
Fault zones and rock contacts are important because the vast majority of gold and silver deposits, as well as those of many other metals, are formed by hot, mineralized water solutions.
Fault zones and rock contacts are important because the vast majority of gold and silver deposits, as well as those of many other metals, are formed by hot, mineralized water solutions.Oil Seeps in Arizona
December 2003
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.
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.
Ask The Experts—Columbium/Niobium
September 2008
Q: I have samples that have assayed 45-75% columbium/niobium. What is it used for? Do you know anyone who is actively processing this ore? Where should I go from here?
Q: I have samples that have assayed 45-75% columbium/niobium. What is it used for? Do you know anyone who is actively processing this ore? Where should I go from here?
The Centennial Lode and the Centennial Ridge District, Wyoming
October 2000
In 1874, placer gold was discovered in the Middle Fork of the Little Laramie River south of the present site of Centennial village. The source of the gold was traced upslope to a nearby ridge in the following year.
In 1874, placer gold was discovered in the Middle Fork of the Little Laramie River south of the present site of Centennial village. The source of the gold was traced upslope to a nearby ridge in the following year.
Manslaughter Charges Dropped Against Sixteen to One Mine
April 2003
Manslaughter charges against the Original Sixteen to One Mine, company president Mike Miller, and manager Jonathan Farrell, were dismissed by Judge Stanley Young Jr. in Downieville, California.
Manslaughter charges against the Original Sixteen to One Mine, company president Mike Miller, and manager Jonathan Farrell, were dismissed by Judge Stanley Young Jr. in Downieville, California.
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