Information card for entry 2237321

Structure parameters

• Common name: penikisite
• Chemical name: Barium dimagnesium dialuminium triphosphate trihydroxide
• Formula: Al2 Ba H3 Mg1.97 Mn0.03 O15 P3
• Calculated formula: Al2 Ba H3 Mg1.97 Mn0.03 O15 P3
• Title of publication: Penikisite, BaMg~2~Al~2~(PO~4~)~3~(OH)~3~, isostructural with bjarebyite
• Authors of publication: Bowman, Michael G.; Downs, Robert T.; Yang, Hexiong
• Journal of publication: Acta Crystallographica Section E
• Year of publication: 2013
• Journal volume: 69
• Journal issue: 2
• Pages of publication: i4 - i5
• a: 8.9577 ± 0.0004 Å
• b: 12.015 ± 0.0005 Å
• c: 4.9079 ± 0.0002 Å
• α: 90°
• β: 100.505 ± 0.002°
• γ: 90°
• Cell volume: 519.37 ± 0.04 ų
• Cell temperature: 293 ± 2 K
• Ambient diffraction temperature: 293 ± 2 K
• Number of distinct elements: 7
• Space group number: 11
• Hermann-Mauguin space group symbol: P 1 21/m 1
• Hall space group symbol: -P 2yb
• Residual factor for all reflections: 0.0155
• Residual factor for significantly intense reflections: 0.015
• Weighted residual factors for significantly intense reflections: 0.0387
• Weighted residual factors for all reflections included in the refinement: 0.0389
• Goodness-of-fit parameter for all reflections included in the refinement: 1.137
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: Yes