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History & Geology

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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Critical Metals: Antimony


I’ve been taking a look at the mining and uses of a number of critical metals in series of articles, and it’s time to take a look at antimony.

The Tombstone Silver-Lead District, Arizona


In 1877, a prospector named Ed Schieffelin discovered silver in “the middle of nowhere” and staked two claims: “Tumbstone” and “Graveyard.” Soon a town and mining district were organized and acquired the name “Tombstone” after making a spelling correction.

Prospecting for Pegmatites


…in some cases pegmatites have produced individual mineral crystals that are enormous, attaining lengths of over 40 feet long, and many of the world’s largest mineral crystals are examples that were found within pegmatite deposits.

All About Minerals


There are several common ways that new mineral crystals form and grow. Perhaps the simplest is when minerals form through the cooling of molten rock and the atoms bond together into mineral crystals.

Rare Silver Nuggets And Their Origins


Silver nuggets have been described as “ultra-rare,” “prized” and “unique.” Naturally occurring silver nuggets are rare enough to suggest caution when purchasing. Fakes have reportedly been produced and misrepresented for sale as genuine specimens.

Glaciers and Placer Gold Deposits


It also happens sometimes that glaciers will bury valuable placer deposits. This occurs when the glacier goes over the top of an existing placer deposit.

Ancient River Channels of Trinity County


Trinity County is located in the far northwest corner of California and stirs up many different memories for those who have been there.

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