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| Unique Annabergite Crystals. Photo Credit: © Jean-Marc Johannet |
Annabergite
Annabergite is an arsenate mineral consisting of a hydrous nickelarsenate 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.
Formula: Ni₃(AsO₄)₂·8H₂O
System: Monoclinic
Colour: Green, light grey to ...
Lustre: Sub-Adamantine, Sub-Vitreous, Pearly, Earthy
Crystal habit: Usually as fibrous veinlets, crystalline crusts, or earthy; rare as well formed crystals
From Km-3 Mine, Lavrion (Laurion; Laurium), Lavrion District Mines, Lavrion District (Laurion; Laurium), Attikí Prefecture (Attica; Attika), Greece
From Km-3 Mine, Lavrion (Laurion; Laurium), Lavrion District Mines, Lavrion District (Laurion; Laurium), Attikí Prefecture (Attica; Attika), Greece
