Information card for entry 1000035

Structure parameters

• Chemical name: Sodium calcium magnesium iron titanium alumosilicate *
• Mineral name: Augite
• Formula: Al0.34 Ca0.6 Fe0.2 Mg0.9 Na0.1 O6 Si1.82
• Calculated formula: Al0.342 Ca0.616 Fe0.21 Mg0.902 Na0.09 O6 Si1.82 Ti0.02
• Title of publication: Crystal-Chemical Characterization of Clinopyroxenes based on Eight New Structure Refinements
• Authors of publication: Clark, J R; Appleman, D E; Papike, J J
• Journal of publication: Mineralogical Society of America: Special Papers
• Year of publication: 1969
• Journal volume: 2
• Pages of publication: 31 - 50
• a: 9.699 ± 0.001 Å
• b: 8.844 ± 0.001 Å
• c: 5.272 ± 0.001 Å
• α: 90°
• β: 106.97 ± 0.02°
• γ: 90°
• Cell volume: 432.5 ų
• Number of distinct elements: 7
• 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: 0.049
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No