Information card for entry 9013490

Structure parameters

• Mineral name: Sapphirine
• Formula: Al5.655 Mg2.39 O10 Si1.455
• Calculated formula: Al5.655 Mg2.39 O10 Si1.455
• Title of publication: A neutron and x-ray diffraction study of (Mg-Al)VI and (Si-Al)IV ordering monoclinic sapphirine Locality: Bekily, Madagasgar Note: Data from x-ray diffraction, known as sapphirine II
• Authors of publication: Higgins, J. B.; Ribbe, P. H.
• Journal of publication: Contributions to Mineralogy and Petrology
• Year of publication: 1979
• Journal volume: 68
• Pages of publication: 357 - 368
• a: 11.286 Å
• b: 14.438 Å
• c: 9.957 Å
• α: 90°
• β: 125.4°
• γ: 90°
• Cell volume: 1322.52 ų
• Number of distinct elements: 4
• Space group number: 14
• Hermann-Mauguin space group symbol: P 1 21/a 1
• Hall space group symbol: -P 2yab
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No