Information card for entry 1532027

Structure parameters

• Chemical name: K (Na Ca) (Mg4.5 Fe0.3 Ti0.1 Ca0.1) (Si7.4 Al0.3 Ti0.3 O22) (O H)2
• Formula: Al0.3 Ca1.1 Fe0.3 H2 K Mg4.5 Na O24 Si7.4 Ti0.4
• Calculated formula: Al0.3 Ca1.1 Fe0.3 K Mg4.5 Na O24 Si7.4 Ti0.4
• Title of publication: Crystal-chemical characterization of clinoamphiboles based on five new structure refinements
• Authors of publication: Papike, J.J.; Ross, M.; Clark, J.R.
• Journal of publication: Mineralogical Society of America: Special Papers
• Year of publication: 1969
• Journal volume: 2
• Pages of publication: 117 - 136
• a: 10.019 Å
• b: 18.036 Å
• c: 5.286 Å
• α: 90°
• β: 104.983°
• γ: 90°
• Cell volume: 922.72 ų
• Number of distinct elements: 10
• Space group number: 12
• Hermann-Mauguin space group symbol: C 1 2/m 1
• Hall space group symbol: -C 2y
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No