History & Geology
Ask The Experts
July 2015 by Chris Ralph
Q: Is there a correlation between fault zones and mineralization of economic metals?Prospector's Guide to Rock Breaking and Blasting

The Goldfield Mining District, Nevada—Part II
The majority of the gold produced in Goldfield has come from ores that are close enough to the surface to be oxidized by the air. This oxidized ore is normally a soft, shattered, earthy material usually stained yellow to brown by oxides of iron.
Gold in the San Francisco District Oatman, Mohave County, Arizona

Ask The Experts
Sulfides and oxides—what's the difference between the two?
Using Favorable Rock Types to Find More Gold
The more experienced prospectors know these lesser known spots are the types of places where big finds are still made.
Eolian Placer Gold

The Heavy Minerals in Your Concentrates

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The Bawl Mill
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