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Povondraite
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| Povondraite Formula: Na Fe9 B3 Si6 O31 H1.998 Name: Povondraite Unit cell: 16.186 16.186 7.444 90.0 90.0 120.0 , V=1688.95 Space group: R3M (160) |
Grice J D , Ercit T S , Hawthorne F C , American Mineralogist , 78 (1993) p.433-436, Povondraite, a redefinition of the tourmaline ferridravite, Note: Atomic parameters updated by Grice on 11/20/2001.
