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manganese oxides (psilomelane)
Ameise Mine, Gosenbach, Siegen, Siegen-Wittgenstein District, Arnsberg, North Rhine-Westphalia/Nordrhein-Westfalen, Germany
7 x 3 cm
(Author: Andreas Gerstenberg)
| Dimensions: | 572 x 706 |
| File size: | 46.75 kbytes |
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