Information card for entry 1100016

Structure parameters

• Chemical name: Potassium magnesium aluminium silicon oxide hydroxide *
• Mineral name: Phengite 3T
• Formula: Al1.788 H2 K Mg0.64 O12 Si3.572
• Calculated formula: Al1.788 H4 K Mg0.64 O12 Si3.572
• Title of publication: Cation site ordering in phengite 3T from the Dora-Maira massif (western Alps): a variable-temperature neutron powder diffraction study
• Authors of publication: Pavese, A; Ferraris, G; Prencipe, M; Ibberson, R
• Journal of publication: European Journal of Mineralogy (1,1989-)
• Year of publication: 1997
• Journal volume: 9
• Pages of publication: 1183 - 1190
• a: 5.21379 ± 0.00002 Å
• b: 5.21379 ± 0.00002 Å
• c: 29.73819 ± 0.0002 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 700.1 ų
• Number of distinct elements: 6
• Space group number: 151
• Hermann-Mauguin space group symbol: P 31 1 2
• Hall space group symbol: P 31 2 (0 0 4)
• Residual factor for all reflections: 0.06
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No