History & Geology
The Amazing Mineral Tourmaline
December 2013 by Chris Ralph

Calcite and Limestone

Silver and Base Metal Deposits of the Pioche District

Critical Metals: Copper

Copper Deposits of Alaska

A Journey Into the Silver Peak Range
The Gold Rush in California called hundreds of thousands of souls to leave their homes to journey to the the far reaches of the West. At first the rich goldfields of the Sierra Nevada beckoned to these adventurous pioneers.
SS Central America Gives Up Millions in Gold Rush Era Gold
A treasure-seeking young man whose name will forever remain anonymous made the months-long journey either over land or by sailing ship to California after word spread about the gold strike in 1849.
Gold Deposition and Gradients of Placer Streams—Part I

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