History & Geology
Greenstone and Gold
September 2013 by Chris Ralph

The Ups and Downs of Geologic Faults

The Tombstone Silver-Lead District, Arizona

The Birimian Greenstone Belts of West Africa

Round Mountain, Nevada

Prospecting for Copper Ores—Part II
Copper is a critically important metal that we need to run our modern electronic society, and the long term outlook for this metal is for a steady increase in price.
The Potholes—California’s Oldest Known Mining District
Every time we prospected here we found gold, sometimes some really coarse flakes, but no large nuggets (yet).
Why Haven't They Mined This Claim?

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