Information card for entry 9005320

Structure parameters

• Mineral name: Phengite
• Formula: Al2.798 H2 K2 Mg0.63 O12 Si3.572
• Calculated formula: Al1.848 H2 K Mg0.58 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 Note: at T = 893 K
• Authors of publication: Pavese, A.; Ferraris, G.; Prencipe, M.; Ibberson, R.
• Journal of publication: European Journal of Mineralogy
• Year of publication: 1997
• Journal volume: 9
• Pages of publication: 1183 - 1190
• a: 5.23169 Å
• b: 5.23169 Å
• c: 30.1227 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 714.017 ų
• Ambient diffraction temperature: 893 K
• 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)
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No