Information card for entry 2003324

Structure parameters

• Formula: Al8 B3 Li Na O31 Si6
• Calculated formula: Al6 B3 Li3 Na O31 Si6
• Title of publication: Cu-Bearing Tourmaline from Paraiba, Brazil
• Authors of publication: MacDonald, D. J.; Hawthorne, F. C.
• Journal of publication: Acta Crystallographica Section C
• Year of publication: 1995
• Journal volume: 51
• Journal issue: 4
• Pages of publication: 555 - 557
• a: 15.805 ± 0.002 Å
• b: 15.805 ± 0.002 Å
• c: 7.084 ± 0.001 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1532.5 ± 0.3 ų
• Cell temperature: 297 K
• Number of distinct elements: 6
• Space group number: 160
• Hermann-Mauguin space group symbol: R 3 m :H
• Hall space group symbol: R 3 -2"
• Residual factor for significantly intense reflections: 0.02
• Weighted residual factors for significantly intense reflections: 0.023
• Goodness-of-fit parameter for significantly intense reflections: 1.4
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No