Information card for entry 1548718

Structure parameters

• Formula: Al4 Fe2 O18 Si5
• Calculated formula: Al4.0002 Fe2 O18 Si4.9998
• Title of publication: Structural investigations of the two polymorphs of synthetic Fe-cordierite and Raman spectroscopy of hexagonal Fe-cordierite
• Authors of publication: Udo Haefeker; Reinhard Kaindl; Peter Tropper; Hannes Kruger; Volker Kahlenberg; Maria Orlova
• Journal of publication: Mineralogy and Petrology
• Year of publication: 2014
• Journal volume: 108
• Pages of publication: 469 - 478
• a: 9.8801 ± 0.0006 Å
• b: 9.8801 ± 0.0006 Å
• c: 9.2852 ± 0.0005 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 784.95 ± 0.08 ų
• Cell temperature: 298 K
• Ambient diffraction temperature: 298 K
• Number of distinct elements: 4
• Space group number: 192
• Hermann-Mauguin space group symbol: P 6/m c c
• Hall space group symbol: -P 6 2c
• Residual factor for all reflections: 0.0335
• Residual factor for significantly intense reflections: 0.0314
• Weighted residual factors for significantly intense reflections: 0.0451
• Weighted residual factors for all reflections included in the refinement: 0.0457
• Goodness-of-fit parameter for significantly intense reflections: 3.69
• Goodness-of-fit parameter for all reflections included in the refinement: 3.66
• Diffraction radiation probe: x-ray
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No