Information card for entry 2016341

Structure parameters

• Common name: Iranite
• Chemical name: copper decalead hexachromate bis(orthosilicate) dihydroxide
• Mineral name: Iranite
• Formula: Cr6 Cu H2 O34 Pb10 Si2
• Calculated formula: Cr6 Cu O34 Pb10 Si2
• SMILES: [Pb+2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[Cu+2].[Cr](=O)(=O)([O-])[O-].[Cr](=O)(=O)([O-])[O-].[Cr](=O)(=O)([O-])[O-].[Cr](=O)(=O)([O-])[O-].[Cr](=O)(=O)([O-])[O-].[Cr](=O)(=O)([O-])[O-].[Si]([O-])([O-])([O-])[O-].[Si]([O-])([O-])([O-])[O-].[OH-].[OH-]
• Title of publication: Iranite, CuPb~10~(CrO~4~)~6~(SiO~4~)~2~(OH)~2~, isomorphous with hemihedrite
• Authors of publication: Yang, Hexiong; Sano, Jennifer L.; Eichler, Carla; Downs, Robert T.; Costin, Gelu
• Journal of publication: Acta Crystallographica Section C
• Year of publication: 2007
• Journal volume: 63
• Journal issue: 12
• Pages of publication: i122 - i124
• a: 9.5416 ± 0.0004 Å
• b: 11.3992 ± 0.0005 Å
• c: 10.7465 ± 0.0004 Å
• α: 120.472 ± 0.002°
• β: 92.47 ± 0.002°
• γ: 55.531 ± 0.002°
• Cell volume: 780.08 ± 0.07 ų
• Cell temperature: 293 ± 2 K
• Ambient diffraction temperature: 293 ± 2 K
• Number of distinct elements: 6
• Space group number: 2
• Hermann-Mauguin space group symbol: P -1
• Hall space group symbol: -P 1
• Residual factor for all reflections: 0.0496
• Residual factor for significantly intense reflections: 0.0341
• Weighted residual factors for significantly intense reflections: 0.0621
• Weighted residual factors for all reflections included in the refinement: 0.0698
• Goodness-of-fit parameter for all reflections included in the refinement: 1.013
• Diffraction radiation wavelength: 0.71073 Å
• Diffraction radiation type: MoKα
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: Yes