History & Geology
Enrichment of Mineral Deposits by Weathering—Part II
April 2016 by Chris Ralph

Mineralized Faults and Contacts in the Search for Gold

The Coolgardie Gold Mining Camp of Southern California
The area was mined intermittently from around 1900 to 1915, but was also mined in the late 1800s, with a total output valued at about $100,000, which is around $9.5 million at the current gold price.
Bedrock Gold: When It’s There and When It Isn’t
Has your experience ever led you to wonder why some gold is deposited on bedrock and in crevices, while other gold is not? We’re going take a deeper look at this and see what we can figure it out.
One Question, Forever Unanswered—Did He Really Find the Gold?

Gold Depositiion and Gradients of Placer Streams—Part II

Gold in the San Francisco District Oatman, Mohave County, Arizona

Gold Refining In The Ancient World
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