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Chromdravite


Chromdravite : [Na][Mg3][(Cr3+,Fe3+)6][(OH)3|OH|(BO3)3|Si6O18]

Photo Copyright © 2007, JGW  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Srednyaya Padma U-V deposit, Zaonezhie peninsula, Lake Onega, Karelia Republic, Northern Region, Russia
Dark green grains in matrix. S057-19
2 cm specimen, courtesy of Excalibur Mineral Company.

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