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Galena (Gonderbach twins)
Gonderbach mine, Bad Laasphe, Siegerland, Northrhine-Westphalia, Germany
4 x 3 cm
Etched spinel-law twin named after the mine. (Author: Andreas Gerstenberg)
| Dimensions: | 633 x 474 |
| File size: | 43.71 kbytes |
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