annabergite


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annabergite

(ˈænəˌbɜːɡaɪt)
n
(Minerals) a rare green secondary mineral consisting of hydrated nickel arsenate in monoclinic crystalline form. Formula: Ni3(AsO4)2.8H2O. Also called: nickel bloom
[C19: named after Annaberg in Saxony, where it was discovered; see -ite1]
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Mineralization consists predominately of pitchblende or uraninite occurring as thin seams, bands and disseminations along bedding planes; tyuyamunite and cobalt bloom (erythrite) along some fractures; and to a lesser extent chalcopyrite, bornite, malachite, pyrite, annabergite and arsenides.