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Q: Is there a correlation between fault zones and mineralization of economic metals?

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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.

Detecting for Gold in Australia—The Kimberley Trip


The hair stood up on the back of my neck when I saw this, especially the nice patches of wash in the bottoms of the gullies, a sure sign of an auriferous source being nearby.

The Golden Days of Julian, California


Some scattered reports say that gold may have been washed from streams here as early as the 1840s, but the undisputed major discovery came in 1870.

Conrey Dredge No. 4—Part II


These were the men who periodically picked up the gold amalgam from the tables and sluices in the dredge, processed it, and transported the gold ingots to the railroad express office in Alder. Their trustworthiness must have commanded a prominent wage.

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.

Mohave County, Arizona: The Oatman/San Francisco Mining District


The Oatman/San Francisco Mining District’s historic gold production of 2.2 million ounces of gold since the 1880s makes this area Arizona’s greatest primary gold producing district.

Gold Refining In The Ancient World


One thing that stood out for me is that Agricola was very specific about the type of metal or wood in the implements and vessels that were to be used.

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