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The Colorado Mineral Belt
July 2000 by Edgar B. Heylmun, PhD
The 250 mile long Colorado Mineral Belt cuts diagonally across central and southwestern Colorado, in the heart of the Rocky Mountains...
What is a Valid Mineral Discovery?
One of the greatest opportunities afforded to the citizens of our country is the right to stake and hold mining claims on federal lands. One doesn’t need to be a lawyer to stake mining claims, but a little bit of knowledge about mining claim laws can be helpful.
Ask the Experts
• Is this old mining story too good to be true?
Platinum Placers and Nuggets
Sometimes a placer miner will find small bits and nuggets of metal associated with gold and other heavy minerals in his concentrates, which exhibits a silver-gray color rather than the normal tones of gold.
Operation And Application Of Magnetometers
The technology used in these devices has advanced greatly in the last century. Many different types of physical effects are used to measure these magnetic fields and we will briefly look at some of these.
Dredging at Real Del Castillo, Baja
Suction gold dredging at Real Del Castillo, a remote and seldom visited old gold mining camp less than fifty miles north and east of Ensenada, Mexico.
Ask the Experts
What are the tell signs of garnet deposits?
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.
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• Looking Back
