ERYTHRIT, BOU AZZAR MAROKKO (Miniatur)
Erythrin, gemeinhin als Rotkobalt bezeichnet, ist ein sekundäres Mineral, das aus hydratisiertem Kobaltarsenat besteht und durch die Formel Co3(AsO4)2•8H2O dargestellt wird. Es bildet eine vollständige Reihe mit Annabergit, der die chemische Formel Ni3(AsO4)2•8H2O oder Nickelarsenat hat, gemäß der allgemeinen Formel (Co,Ni)3(AsO4)2•8H2O.
Die Kristalle auf diesem Exemplar sind teilweise beschädigt, da sie sehr zerbrechlich sind. Andererseits ist es reich an diesem Mineral.
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