atacamite

atacamite

[at-uh-kam-ahyt, uh-tak-uh-mahyt]
noun
a mineral, hydrated chloride of copper, Cu 2 Cl(OH) 3 , occurring in a green, granular form: a minor ore of copper.

Origin:
1830–40; named after Atacama Desert; see -ite1

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Encyclopedia Britannica
Encyclopedia

atacamite

green, brilliant halide mineral, basic copper chloride [Cu2(OH)3Cl]. It is a secondary mineral, formed by the oxidation of other copper minerals, particularly under arid conditions; it is widespread as brittle, transparent to translucent crystals in Atacama Province, Chile; in Boleo, Mex.; and in South Australia. For detailed physical properties, see halide mineral (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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