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Quartz (variety amethyst), Galena, Chalcopyrite
September Mine (9th of September Mine) , Madan mining area, Rhodope Mountains, Smolyan Oblast, Bulgaria
14.0 x 7.5 cm
(Author: am mizunaka)
| Dimensions: | 1600 x 1038 |
| File size: | 347.02 kbytes |
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