22111 - Nice Pink Erythrite Crystals on Matrix - Bou Azzer Mine (South Morocco) Walliserops Beautiful example of 19

Beautiful example of 19

56 Inch = 14

Very rare natural association of these 5 different species of trilobites

UWS Type spec mass (g): 37 Type spec location: UWB Main mass: R

08 Inch = 2

22111 - Nice Pink Erythrite Crystals on Matrix - Bou Azzer Mine (South Morocco) Walliserops Beautiful example of 19Erythrite or red cobalt is a secondary hydrated cobalt arsenate mineral with the formula (Co3(AsO4)28H2O). Erythrite and annabergite (Ni3(AsO4)28H2O) (nickel arsenate) form a complete series with the general formula (Co,Ni)3(AsO4)28H2O. Erythrite crystallizes in the monoclinic system and forms prismatic crystals. The color is crimson to pink and occurs as a secondary coating known as cobalt bloom on cobalt arsenide minerals. Well formed crystals are