Information card for entry 1525220

Structure parameters

• Chemical name: Na0.33 Ca0.67 Mg3.53 Al5.47 (B O3)3 (Si6 O18) O0.1 (O H)3.9
• Formula: Al5.47 B3 Ca0.67 H3.9 Mg3.53 Na0.33 O31 Si6
• Calculated formula: Al5.472 B3 Ca0.67 Mg3.528 Na0.33 O31 Si6
• Title of publication: Zur Kristallchemie magnesium-reicher Turmaline
• Authors of publication: Schmetzer, K.; Abraham, K.; Nuber, B.
• Journal of publication: Neues Jahrbuch fuer Mineralogie. Abhandlungen (Band-Nr) (1950-)
• Year of publication: 1979
• Journal volume: 136
• Pages of publication: 93 - 112
• a: 15.967 Å
• b: 15.967 Å
• c: 7.213 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1592.55 ų
• Number of distinct elements: 8
• 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