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Chalcopyrite on Manganoan Calcite with Pyrite and Quartz, Concepcion del oro, Mun de Concepcion del Oro, Zacatecas, Mexico, 13 x 7 x 5 cm. (Author: nurbo)
| Dimensions: | 600 x 342 |
| File size: | 35.71 kbytes |
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