Apachite

Apachite is a copper silicate mineral with a general formula of Cu9Si10O29ยท11H2O. The name is associated with the Apache tribe residents of the area near the Christmas copper mine in the Dripping Spring Mountains of Gila County, Arizona, the location where apachite was first described in 1980. Apachite has monoclinic crystal symmetry, displaying ...
Found on http://en.wikipedia.org/wiki/Apachite
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