placer deposit

A Dictionary of Earth Sciences | 1999 | 250 words | Copyright

placer deposit Deposit of materials (e.g. gold, diamonds, tin, or platinum) that has been concentrated by mechanical action. Placer minerals generally have high density and resistance, and therefore may concentrate during various types of weathering.

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AILSA ALLABY and MICHAEL ALLABY. "placer deposit." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "placer deposit." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O13-placerdeposit.html

AILSA ALLABY and MICHAEL ALLABY. "placer deposit." A Dictionary of Earth Sciences. 1999. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-placerdeposit.html

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