History & Geology
What Are Those Rocks In My Pan?
June 2011 by Jim Halloran
The placer mineral identification key is designed to answer this question. It attempts to recognize all the minerals in your gold pan concentrates.Why Haven't They Mined This Claim?

Jadeite in California
...two jadeite locations in California have been thoroughly researched by geologists. There are no doubt others that lie in wait.
Nevada's Lithium Boom

The Silver, Gold and Gemstones of Candelaria, Nevada

Copper Deposits of Alaska

Prospecting for Copper—What to Look for on the Outcrop
For the prospector, knowing what oxidized hydrothermal alteration looks like in the field is an important exploration tool.
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The Bawl Mill
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Gold Prospecting and Mining Summit
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