History & Geology
The Goldfield Mining District, Nevada—Part II
July 2017 by Chris Ralph
The majority of the gold produced in Goldfield has come from ores that are close enough to the surface to be oxidized by the air. This oxidized ore is normally a soft, shattered, earthy material usually stained yellow to brown by oxides of iron.
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 Wild Rush to Find More Cobalt—Part I
While some future cobalt will come from recycling lithium batteries and other products, the coming huge need for cobalt is virtually a perfect storm of heavy demand and insufficient supply.
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.
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.
Nevada's Silver City Gold District -- Part II
May 2016...this district has had a continuous life of gold mining and milling that spans 150 plus years, and it appears that it will keep pressing on for many more years of production.
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.
Gemstones to Die For
Some gems can potentially poison you, make you sterile and even make you forget who you are.
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• Ask The Experts: What is a Spanish needle?
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• Legislative and Regulatory Update
• Simple Rules of Gold Geology: Comparing Epithermal and Mesothermal Deposits
• The "Madonna Nugget"—A Weekend Hunt to Remember
• Sunset Sunbaker
• A Prospecting Adventure in Mexico
• Critical Minerals: Tungsten
• Police Urge Author to End Treasure Hunt
• Melman on Gold & Silver
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