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History & Geology

The Pedro Gold Dredge

The decision was made to move the dredge intact, a massive undertaking indeed. The goal was to move it only one mile to the Busby’s Chicken Gold Camp, but what a mile that was to be.

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Weathering, Erosion and Placers


The big interest to prospectors thinking about the effect of erosion is not what might happen long into the future, but what they might find in the rivers later this summer when the water levels go down.

What About Palladium?


Palladium may well be an underexplored element and therefore an opportunity for prospectors and geologists. This is because they are often less than obvious and other than the native metals, a chemical analysis of samples is required to identify PGM-enriched rocks.

Polymetallic Skarn Deposits


Polymetallic skarn deposits are an interesting class of deposits that can contain a number of different types of metals.

All About Chalcopyrite


…there are loads of different copper minerals, but a large number of them form first in the ground as chalcopyrite and then through the effects of weathering are changed into other minerals like malachite, cuprite and chrysocolla.

The Mysterious Telluride Minerals


…let’s dive in and take a closer look at these rich gold and silver-bearing minerals to find out what they are, where they form, and how to identify them.

Las Médulas—The Gem of the Roman Gold Mines


This mine was a real wonder of engineering, and the water supply and drifts had to be carefully managed to keep it in operation. In fact, it didn’t close due to lack of gold, but instead closed with the fall of the Roman Empire.

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.

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