Information card for entry 9006167

Structure parameters

• Mineral name: Cryolite
• Formula: Al F6 Na3
• Calculated formula: Al F6 Na3
• SMILES: [Al](F)(F)(F)([F-])([F-])[F-].[Na+].[Na+].[Na+]
• Title of publication: Ferroelastic phase transition in cryolite, Na3AlF6, a mixed fluoride perovskite: high temperature single crystal X-ray diffraction study and symmetry analysis of the transition mechanism Sample: T = 890 K
• Authors of publication: Yang, H.; Ghose, S.; Hatch, D. M.
• Journal of publication: Physics and Chemistry of Minerals
• Year of publication: 1993
• Journal volume: 19
• Pages of publication: 528 - 544
• a: 5.6323 Å
• b: 5.627 Å
• c: 7.958 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 252.213 ų
• Ambient diffraction temperature: 890 K
• Number of distinct elements: 3
• Space group number: 71
• Hermann-Mauguin space group symbol: I m m m
• Hall space group symbol: -I 2 2
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No