Information card for entry 9010306

Structure parameters

• Mineral name: Nepheline
• Formula: Al4 Ca0.03 K0.54 Na3.24 O16 Si4
• Calculated formula: Al4 Ca0.03 K0.54 Na3.24 O16 Si4
• Title of publication: Elastic behavior and pressure-induced structural evolution of nepheline: Implications for the nature of the modulated superstructure Sample: P = .0001 GPa, in air after decompression
• Authors of publication: Gatta, G. D.; Angel, R. J.
• Journal of publication: American Mineralogist
• Year of publication: 2007
• Journal volume: 92
• Pages of publication: 1446 - 1455
• a: 9.9907 Å
• b: 9.9907 Å
• c: 8.3695 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 723.472 ų
• Ambient diffracton pressure: 100 kPa
• Number of distinct elements: 6
• Space group number: 173
• Hermann-Mauguin space group symbol: P 63
• Hall space group symbol: P 6c
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No