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Psilomelane mineral, manganese ore

Psilomelane mineral, manganese ore

E435/0060

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Credit

DIRK WIERSMA / SCIENCE PHOTO LIBRARY DIRK WIERSMA / SCIENCE PHOTO LIBRARY

Caption

Psilomelane. Botryoidal form of the mineral psilomelane, an ore of manganese. Psilomelane composed mostly of the mineral romanechite, a barium manganese oxide mix. Here, botryoidal refers to the grape-like shapes, which formed due to underground hydrothermal (hot water) processes. Manganese is a valuable metal since it is an essential ingredient in steel and other alloys. The height of this sample is 11 centimetres.

Release details

Model release not required. Property release not required.

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