Information card for entry 1558499

Structure parameters

• Mineral name: Stanfieldite
• Formula: Ca7.97 Fe0.56 Mg9.47 O48 P12
• Calculated formula: Ca7.96 Fe0.566 Mg9.458 O48 P12
• Title of publication: Crystal Chemistry of Stanfieldite, Ca7M2Mg9(PO4)12 (M = Ca, Mg, Fe2+), a Structural Base of Ca3Mg3(PO4)4 Phosphors
• Authors of publication: Britvin, Sergey N.; Krzhizhanovskaya, Maria G.; Bocharov, Vladimir N.; Obolonskaya, Edita V.
• Journal of publication: Crystals
• Year of publication: 2020
• Journal volume: 10
• Journal issue: 6
• Pages of publication: 464
• a: 22.7973 ± 0.0004 Å
• b: 9.9833 ± 0.0002 Å
• c: 17.0522 ± 0.0003 Å
• α: 90°
• β: 99.954 ± 0.002°
• γ: 90°
• Cell volume: 3822.53 ± 0.12 ų
• Cell temperature: 296 ± 1 K
• Ambient diffraction temperature: 296 ± 1 K
• Number of distinct elements: 5
• Space group number: 15
• Hermann-Mauguin space group symbol: C 1 2/c 1
• Hall space group symbol: -C 2yc
• Residual factor for all reflections: 0.0511
• Residual factor for significantly intense reflections: 0.0339
• Weighted residual factors for significantly intense reflections: 0.0781
• Weighted residual factors for all reflections included in the refinement: 0.082
• Goodness-of-fit parameter for all reflections included in the refinement: 0.921
• Diffraction radiation probe: x-ray
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No