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History & Geology

Gold Depositiion and Gradients of Placer Streams—Part II

The steeper the gradient is, the more potential erosive power to move gold and other bedload sediments, and the more power to remove obstacles to flow.

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Additional articles that might interest you...

The Significance of Nuggets in Placers


Chances are better that both types of gold did not come from the same source. Let's look at the probable conditions to cause two types of gold in a placer.

Ancestral Yuba River Placer Gold Deposits


The small-scale miner has reasonable opportunity to exploit some of these small, rich placer gold deposits. 

Using Favorable Rock Types to Find More Gold


The more experienced prospectors know these lesser known spots are the types of places where big finds are still made.

The Many Facets of Iron


I’ve been fascinated by iron minerals for many years. So let’s take a look at this very interesting and colorful element.

All the Gold Ever Mined...


If you have been prospecting for any length of time, then you have probably heard something like, “All the gold ever mined would equal a cube 60 feet on each side.”

Gold Placers in Italy


Gold is a fairly widespread mineral in the Italian Alps and in the Northern Apennines. It is found both in primary mineralization and in past and recent floods.

Mineralized Faults and Contacts in the Search for Gold


Fault zones and rock contacts are important because the vast majority of gold and silver deposits, as well as those of many other metals, are formed by hot, mineralized water solutions.

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