Information card for entry 1525221

Structure parameters

• Chemical name: Na0.65 Ca0.27 Mg2.64 Al6.36 (B O3)3 (Si6 O18) O0.5 (O H)3.5
• Formula: Al6.36 B3 Ca0.27 H3.5 Mg2.64 Na0.65 O31 Si6
• Calculated formula: Al6.36 B3 Ca0.27 Mg2.64 Na0.65 O31 Si6
• Title of publication: Zur Kristallchemie magnesium-reicher Turmaline
• Authors of publication: Schmetzer, K.; Nuber, B.; Abraham, K.
• Journal of publication: Neues Jahrbuch fuer Mineralogie. Abhandlungen (Band-Nr) (1950-)
• Year of publication: 1979
• Journal volume: 136
• Pages of publication: 93 - 112
• a: 15.923 Å
• b: 15.923 Å
• c: 7.201 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1581.15 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