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Gold Taken from Colorado Mine

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During the raising of the Rocky Mountains millions of years ago, superheated fluids rose from deep within the Earth and pushed minerals such as gold and silver up through the Earth's crust. Erosion brought pieces of gold downstream in creeks (placer gold), while the deeper deposits (lode gold) could only be recovered by skilled labor and technology.

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Date: 
October 26, 2013
Source: 
https://commons.wikimedia.org/wiki/File:Gold_%28Dixie_Mine,_Idaho_Springs,_Colorado,_USA%29_3_%2817030135106%29.jpg

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