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Critical Minerals: Gold

A few quick calculations show that approximately 11 tons of gold are lost each year just in the manufacture of new cell phones.

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Silver and Base Metal Deposits of the Pioche District


The areas that were mineralized with the bedded ore were huge and vast tonnages were indicated, although they had no idea at the time.

The Birimian Greenstone Belts of West Africa


The country we were to visit was Burkina Faso, a small country about the same size of my home state of Nevada with about 10 times more people. The second day I was in Africa, we went out to the goldfields for the first time.

Gold Deposition and Gradients of Placer Streams—Part I


When placer miners from the gold rush era began experimenting with the slope of their sluices, they must have pondered the ideal slope for trapping gold in a creek bed too. Logic suggests the same is true for streams...

Bedrock Gold: When It’s There and When It Isn’t


Has your experience ever led you to wonder why some gold is deposited on bedrock and in crevices, while other gold is not? We’re going take a deeper look at this and see what we can figure it out.

The Geology of Diamond Deposits


New theories have been developed and they may lead to new discoveries and give prospectors some new insight on where to look for diamonds.

California: The Land of Big Nuggets—Part I


The nugget sat there in plain sight, though it was covered in dirt, while hundreds of people had passed that way every day.

The Verde Copper-Gold-Silver-Zinc District, Jerome, Arizona


When I was a student in the College of Mines at the University of Utah, the Verde district was used as an exploration model for “submarine volcanogenic massive sulfide deposits.” So I looked forward to visiting this district and the town of Jerome in central Arizona in the spring of 2012.

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