Information card for entry 9007647

Structure parameters

• Mineral name: Cryptomelane
• Formula: Al0.08 Fe0.16 K0.65 Mn3.76 Na0.11 O8 Sr0.08
• Calculated formula: Al0.08 Fe0.16 K0.65 Mn3.76 Na0.11 O8 Sr0.08
• Title of publication: Symmetry and cation displacements in hollandites: structure refinements of hollandite, cryptomelane and priderite Note: -1M polytype Note: Anisotropic displacement factors from ICSD
• Authors of publication: Post, J. E.; Von Dreele, R. B.; Buseck, P. R.
• Journal of publication: Acta Crystallographica, Section B
• Year of publication: 1982
• Journal volume: 38
• Pages of publication: 1056 - 1065
• a: 9.956 Å
• b: 2.8705 Å
• c: 9.706 Å
• α: 90°
• β: 90.95°
• γ: 90°
• Cell volume: 277.347 ų
• Number of distinct elements: 7
• Space group number: 12
• Hermann-Mauguin space group symbol: I 1 2/m 1
• Hall space group symbol: -I 2y
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No