History & Geology
Enrichment of Mineral Deposits by Weathering—Part II
April 2016 by Chris Ralph
While both zinc and lead deposits also are enriched by the surface weathering process, in part two we will look at the enrichment process for copper and also gold deposits, and at the interpretation of leached outcrops to figure how rich the concentrated deposits below them may be.
Ancestral Yuba River Placer Gold Deposits
The small-scale miner has reasonable opportunity to exploit some of these small, rich placer gold deposits.
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While some future cobalt will come from recycling lithium batteries and other products, the coming huge need for cobalt is virtually a perfect storm of heavy demand and insufficient supply.
All About Quartz—Part I
One of the first minerals most prospectors learn to recognize is quartz, because, in the right circumstances, it can be an excellent indicator mineral for prospectors. Quartz is common, easy to identify, and is often associated with gold and other valuable metal deposits.
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Sulfides and oxides—what's the difference between the two?
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The placer mineral identification key is designed to answer this question. It attempts to recognize all the minerals in your gold pan concentrates.
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What many people don’t realize is that the Comstock Lode produced over 8,000,000 ounces of gold…
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