Placer deposit

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Black sand concentrates

In geology, a placer deposit or placer is an accumulation of valuable minerals formed by gravity separation during sedimentary processes. The name is from the Spanish word placer, meaning "alluvial sand". Placer mining is an important source of gold, and was the main technique used in the early years of many gold rushes, including the California Gold Rush. Types of placer deposits include alluvium, eluvium, beach placers, and paleoplacers.

• See also: Wikipedia, Wiktionary

• Related: Black sand, Placer mining, Sedimentology

The Blue Ribbon Mine Alaska The Blue Ribbon Mine Alaska www.alaskafreegold.com - Web

Goldplacer Goldplacer www.goldplacer.com - Web

Arizona Gold Prospectors Arizona Gold Prospectors www.arizonagoldprospectors.com - Web

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