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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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The Heavy Minerals in Your Concentrates


The fact that mineral deposits can contribute specific types of heavy minerals is why the analysis of the heavy mineral concentrates in the streams of an area can be an important prospecting technique for finding undiscovered mineral deposits.

One of the Richest Beaches Ever Mined


Everyone has heard of the golden beach at Nome, but Nome did not have the richest beach.

PGMs in the United States


Until just recently, platinum-group metals (PGMs), especially palladium, had been holding their own on the market. But, Russia has now resumed shipments and it has brought prices down.

Gold in Tertiary Gravels


In some places, semi-continuous sections of riverbed can easily be linked in many places to identify the path of the ancient rivers.

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.

Prospecting for Surface Flood Gold Placers on Low and Intermediate Gradient Streams


Sample panning is a very important method used to find the richest parts of a flood gold deposit before setting up equipment and running material.

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