Annabergite

Annabergite is an arsenate mineral consisting of a hydrous nickel arsenate, Ni3(AsO4)2ยท8H2O, crystallizing in the monoclinic system and isomorphous with vivianite and erythrite. Crystals are minute and capillary and rarely met with, the mineral occurring usually as soft earthy masses and encrustations. A fine apple-green colour is its characteris...
Found on http://en.wikipedia.org/wiki/Annabergite

Annabergite

Annabergite (also known as nickel bloom) is a rare secondary mineral of a pale green colour, that forms in the oxidation zones of ore deposits and is found as a powdery coating on the surface of nickel-bearing minerals such as chloanite and nickeline. Annabergite is a hydrated arsenate of nickel of the vivanite group.
Found on http://www.probertencyclopaedia.com/browse/HA.HTM

annabergite

hydrated nickel arsenate mineral that is very similar to erythrite (q.v.).[1 related articles]
Found on http://www.britannica.com/eb/a-z/a/77
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