20379 - Nice Pink Erythrite Crystals on Matrix - Bou Azzer Mine (South Morocco) Crinoids Errachidia province

Errachidia province

labio-lingually compressed

interesting conclusions can also be drawn about the vegetation of the moment

Korn and Klug 2002 and Sepkoski 2002

and no serrations

20379 - Nice Pink Erythrite Crystals on Matrix - Bou Azzer Mine (South Morocco) Crinoids Errachidia provinceErythrite 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