History & Geology
The Paragenesis of Gold & Silver Deposits
March 2015 by Chris Ralph

Another Prospecting Adventure: Coulterville
What also helped keep Coulterville alive was the fact that the town itself happened to be sitting on top of one of the richest veins in the Mother Lode. The ledge itself was three hundred feet wide.
Ask The Experts
Q: Is there a correlation between fault zones and mineralization of economic metals?
WSGS Releases New Geologic Maps
The Wyoming State Geological Survey announced ten new geologic maps have been completed and are now available.
Diary of a Diamond Prospector

Placer Gold Deposits of New Mexico
While a large number of locations have yielded some placer gold, most of the state’s placer production has come from a few productive districts.
All About Chalcopyrite

Gold, Quartz & Chalcedony—Part II

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