All Articles
Sulfides, Selenides and Tellurides
June 2007 by Chris Ralph
The early day miners feared it, and it happened a lot more often than they would have liked: the easily worked rich surface ores they discovered gave way as they mined downward to a vein full of sulfides, base metals and other nasty, rebellious and...
Ask The Experts: Nickel assays
Q: Our group has found a nickel deposit in the Yuma, Arizona area that is similar to the one that you wrote about...
Lluvia de Oro—A Shower of Gold Awaiting Development in the Sierra Madre—Part II
Superintendent Tom Phillips soon returned to the mines with fellow worker Thomas J. Findlay, and began repair work. Phillips had already determined that the machinery had been operated at various times by armed forces...
NAS Agrees to Review Superfund Science
The National Academy of Sciences has taken a step toward reviewing a proposed cleanup plan in Idaho.
Diamond Dealer Prevails in Congo
The one he’s rolling around in his fingers is nice—5.23 carats, nearly the size of a marble, pure and white. But the diamond that Alphonse Ngoyi Kasanji is talking about is the big one—the one that got taken away.
Ask The Experts
Q: Is there a correlation between fault zones and mineralization of economic metals?
Time to File Claims in Southern California
Bottom line for you fellow miners: file your claims now in these areas or risk being forever locked out!
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