Information card for entry 9016536

Structure parameters

• Mineral name: Povondraite
• Formula: Al0.3 B3 Fe6.87 H3.12 K0.2 Mg1.83 Na0.8 O31 Si6
• Calculated formula: Al0.3 B3 Fe6.87 H3.12 K0.2 Mg1.83 Na0.8 O31 Si6
• Title of publication: Povondraite, a redefinition of the tourmaline ferridravite Note: Atomic parameters updated by Grice on 11/20/2001
• Authors of publication: Grice, J. D.; Ercit, T. S.; Hawthorne, F. C.
• Journal of publication: American Mineralogist
• Year of publication: 1993
• Journal volume: 78
• Pages of publication: 433 - 436
• a: 16.186 Å
• b: 16.186 Å
• c: 7.444 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1688.95 ų
• Number of distinct elements: 9
• Space group number: 160
• Hermann-Mauguin space group symbol: R 3 m :H
• Hall space group symbol: R 3 -2"
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No