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manganese oxides (psilomelane)
7 x 3 cm
(Autor: Andreas Gerstenberg)

Ameise Mine, Gosenbach, Siegen, Siegen-Wittgenstein District, Arnsberg, North Rhine-Westphalia/Nordrhein-Westfalen, Germany
manganese oxides (psilomelane)
7 x 3 cm
(Autor: Andreas Gerstenberg)

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