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Erythrite: Co3(AsO4)2·8(H2O) Cobaltkoritnigite: (Co,Zn)(AsO3OH)·(H2O)
Comments: Dark purplish cobaltkoritnigite with pink erythrite.
Location: Schneeberg District, Erzgebirge, Saxony, Germany.
Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag
Erythrite: Co3(AsO4)2·8(H2O) Skutterudite: (Co,Ni)As3-x
Comments: Erythrite crystal on massive skutterudite.
Location: Bou Azzer, Morocco.
Scale: Crystal size 1.5 cm.
© John Veevaert