|Radial Annabergite Crystals From Greece. Photo Credit: László Tóth|
Annabergite is an arsenate mineral consisting of a hydrous nickel arsenate, crystallizing in the monoclinic system and isomorphous with vivianite and erythrite.
Colour: Green, light grey
From Lavrio; Greece
Crystals are minute and capillary and rarely met with, the mineral occurring usually as soft earthy masses and encrustations. A fine apple-green color is its characteristic feature.