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Erythrite

Chemical Formula: H₁₆As₂Co_2.01Fe_.74Ni_.25O₁₆

Other names: Cobalt iron nickel arsenate hydrate (2.01/0.74/0.25/2/8)

Layman's explanation: Erythrite, also known as cobalt bloom, is a weathering product of cobalt-containing minerals such as cobaltite. Erythrite has a deep red-purple to peach or pink-red color. It is a secondary oxidized cobalt mineral that froms in monoclinic crystals, in globular, and in earthy forms. It is used as a minor ore of cobalt and as mineral specimen. This mineral is found in some mines of Ontario, Morocco, and Germany.

Keywords: cobalt bloom

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