olivenite

olivenite

[oh-liv-uh-nahyt, ol-uh-vuh-]
noun
a mineral, basic copper arsenate, Cu 4 As 2 O 8 (OH) 2 , occurring in crystals and in masses, usually olive-green in color.

Origin:
1810–20; < German Oliven(erz) olive (ore) + -ite1

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World English Dictionary
olivenite (ɒˈlɪvɪˌnaɪt)
 
n
a green to black rare secondary mineral consisting of hydrated basic copper arsenate in orthorhombic crystalline form. Formula: Cu2(AsO4)(OH)
 
[C19: from German Oliven(erz) olive (ore) + -ite1]

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