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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.

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Green Valley Gold District, Payson, Arizona


Most gold-bearing quartz veins found in the district were fracture fillings in faults enclosed by crushed quartz zones along their margins. Since the host rocks were often extensively weathered, portions of the veins stood out as positive, resistant outcrops. The gold-bearing veins ranged from a few inches wide to the vein at the Gowan mine that was as much as 12 feet wide. 

Prospecting With The Help of Fluvial Geomorphology


Quiz yourself about the stream in figure 5. Based on your previous knowledge of where gold is found in a stream and in this article, where do you think you will find the most gold?

The Ely Copper-Gold District of Nevada


The main ore deposits of the Ely district are associated with an east-west belt of altered and mineralized rocks measuring about one mile wide that extends 8 miles westward from Ely.

Placer Mining At Chititu Creek, Alaska


There is reason to believe these stream valleys are still rich with gold, silver and copper.

Prospecting for Diamonds


Let’s take a look at diamonds and diamond mining and see how they form, how they are used beyond just jewelry, and what leads geologists to find diamond deposits.

Alaska: Kodiak Islands Mineral Resources


The fresh material is worked and concentrated by the waves on the flat, wide beach platform. The waves wash away the lighter minerals, leaving the heavies near the bluffs and in depressions on the beach.

Confluence Placers


Confluences of placer streams are well known as concentration sites for heavy minerals. The basic reason is that...

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