Information card for entry 2108839

Structure parameters

• Mineral name: Tremolite
• Formula: Al0.68 Ca1.98 F0.34 H1.66 K0.265 Mg5.045 O23.66 Si7.32
• Calculated formula: Al0.68 Ca1.98 F0.34 H1.66 K0.2648 Mg5.045 O23.66 Si7.32
• Title of publication: Recommended X-ray single-crystal structure refinement and Rietveld refinement procedure for tremolite
• Authors of publication: Ballirano, Paolo; Celata, Beatrice; Pacella, Alessandro; Bosi, Ferdinando
• Journal of publication: Acta Crystallographica Section B
• Year of publication: 2021
• Journal volume: 77
• Journal issue: 4
• a: 9.84053 ± 0.00005 Å
• b: 18.0234 ± 0.0001 Å
• c: 5.28475 ± 0.00003 Å
• α: 90°
• β: 104.956 ± 0.0004°
• γ: 90°
• Cell volume: 905.55 ± 0.009 ų
• Cell temperature: 303 ± 2 K
• Ambient diffraction temperature: 298 ± 2 K
• Number of distinct elements: 8
• Space group number: 12
• Hermann-Mauguin space group symbol: C 1 2/m 1
• Hall space group symbol: -C 2y
• Residual factor R(I) for significantly intense reflections: 0.0147
• Goodness-of-fit parameter for all reflections: 3.768
• Method of determination: powder diffraction
• Diffraction radiation wavelength: 1.54178 Å
• Diffraction radiation type: CuKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: Yes