Information card for entry 2013138

Structure parameters

• Common name: celsian
• Chemical name: Barium aluminium silicate
• Formula: Al1.88 Ba0.94 O8 Si2.12
• Calculated formula: Al1.876 Ba0.938 O8 Si2.124
• Title of publication: Barium-deficient celsian, Ba~1{-~<i>x</i>}Al~2{-~2<i>x</i>}Si~2+2<i>x~</i>O~8~ (<i>x</i> = 0.20 or 0.06)
• Authors of publication: Skellern, Matthew G.; Howie, R. Alan; Lachowski, Eric E.; Skakle, Janet M. S.
• Journal of publication: Acta Crystallographica Section C
• Year of publication: 2003
• Journal volume: 59
• Journal issue: 2
• Pages of publication: i11 - i14
• a: 8.633 ± 0.006 Å
• b: 13.063 ± 0.008 Å
• c: 7.214 ± 0.005 Å
• α: 90°
• β: 115.17 ± 0.05°
• γ: 90°
• Cell volume: 736.3 ± 0.9 ų
• Cell temperature: 298 ± 2 K
• Ambient diffraction temperature: 298 ± 2 K
• Number of distinct elements: 4
• Space group number: 12
• Hermann-Mauguin space group symbol: C 1 2/m 1
• Hall space group symbol: -C 2y
• Residual factor for all reflections: 0.032
• Residual factor for significantly intense reflections: 0.032
• Weighted residual factors for significantly intense reflections: 0.095
• Weighted residual factors for all reflections included in the refinement: 0.095
• Goodness-of-fit parameter for all reflections included in the refinement: 1.364
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: Yes