Information card for entry 2008721

Structure parameters

• Common name: potassium iron silicate
• Chemical name: potassium iron silicate
• Formula: Fe0.97 K0.97 O4 Si1.03
• Calculated formula: Fe0.97 K0.97 O3.99999 Si1.03
• Title of publication: Hexagonal β-KFeSiO~4~
• Authors of publication: Robert Hammond; Jacques Barbier
• Journal of publication: Acta Crystallographica Section C
• Year of publication: 1999
• Journal volume: 55
• Journal issue: 7
• Pages of publication: IUC9900075
• a: 5.26 ± 0.0007 Å
• b: 5.26 ± 0.0007 Å
• c: 8.801 ± 0.002 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 210.88 ± 0.06 ų
• Cell temperature: 293 ± 2 K
• Ambient diffraction temperature: 293 ± 2 K
• Number of distinct elements: 4
• Space group number: 182
• Hermann-Mauguin space group symbol: P 63 2 2
• Hall space group symbol: P 6c 2c
• Residual factor for all reflections: 0.032
• Residual factor for significantly intense reflections: 0.0189
• Weighted residual factors for all reflections: 0.0563
• Weighted residual factors for significantly intense reflections: 0.0452
• Goodness-of-fit parameter for all reflections: 0.982
• Goodness-of-fit parameter for significantly intense reflections: 1.114
• Diffraction radiation wavelength: 0.56086 Å
• Diffraction radiation type: AgKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No