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History & Geology

Perception of Mining vs. Reality

Many modern mining companies have taken to making a special effort to ensure the goods and services they need are supplied as much as possible out of the local economy.

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Glaciers and Placer Gold Deposits


It also happens sometimes that glaciers will bury valuable placer deposits. This occurs when the glacier goes over the top of an existing placer deposit.

Gold From Cemented Gravels


The truth is that cemented gravels are really not all that complex. There is no mystery of how gold grew there or somehow wormed its way into these solid gravels.

Prospecting Homonyms


Three homonyms come to mind when I think of gemstones, gold and vegetables: carrot, carat and karat. Let’s look at carrot first.

Strategic Metals—Part II


There are literally thousands of abandoned wasterock and ore dumps that dot the United States that could hold many tones of strategic metals.

Residual Placers: An Often Overlooked Gold Source


Because the forces of erosion and gravity tend to carry lighter materials like quartz away more easily, the heavy minerals like gold or silver will tend to be concentrated in the general area around the vein outcrop. These concentrations are what make residual placers so attractive.

Nevada's Silver City Gold District—Part I


The name Silver City is quite ironic as it doesn’t really fit the area’s metal production. The area encompassing the Silver City district is a great, stand-alone gold district, where the production value of gold has been much more than that of silver. Since the initial discovery of gold-bearing veins in the mid-1850s, the area has been a center of continuous small and large-scale gold production.

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.

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