22111 - Nice Pink Erythrite Crystals on Matrix - Bou Azzer Mine (South Morocco) Walliserops Very rare natural association of

Very rare natural association of these 5 different species of trilobites

Only has small glued and filled fracture

Nice right maxillary fragment

08 Inch = 2

Salter 1867 (trilobite)

22111 - Nice Pink Erythrite Crystals on Matrix - Bou Azzer Mine (South Morocco) Walliserops Very rare natural association ofErythrite 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