Information card for entry 9016083

Structure parameters

• Mineral name: Dravite
• Formula: Al5.47 B3.17 Ca0.18 Fe1.67 H3.6 Mg1.86 Na0.77 O31 Si5.78 Ti0.05
• Calculated formula: Al5.4702 B3.1698 Ca0.18 Fe1.6701 H3.6 Mg1.8603 Na0.77 O31 Si5.7798 Ti0.0498
• Title of publication: Ordering of Fe and Mg in the tourmaline crystal structure: The correct formula Sample: Dravite 43167
• Authors of publication: Grice, J. D.; Ercit, T. S.
• Journal of publication: Neues Jahrbuch fur Mineralogie, Abhandlungen
• Year of publication: 1993
• Journal volume: 165
• Pages of publication: 245 - 266
• a: 15.96 Å
• b: 15.96 Å
• c: 7.238 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1596.67 ų
• Number of distinct elements: 10
• 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