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Chromdravite
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| Mineral: | Chromdravite: NaMg3(Cr,Fe+++)6(BO3)3Si6O18(OH)4 | ||||
| Comments: | Dark green chromdravite grains in matrix. | ||||
| Location: | Srednyaya Padma U-V deposit, Zaonezhie peninsula, Lake Onega, Karelia Republic, Northern Region, Russia. | ||||
| Scale: | Specimen Size 2 cm. | ||||
| Copyright: | © Jeff Weissman / Photographic Guide to Mineral Species | ||||
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