Information card for entry 1200006

Structure parameters

• Chemical name: Magnesium iron calcium aluminium silicate *
• Mineral name: Augite
• Formula: Al0.7 Ca Fe0.2 Mg0.6 O6 Si1.5
• Calculated formula: Al0.7 Ca Fe0.2 Mg0.6 O6 Si1.5
• Title of publication: Refinement of the Crystal Structure of a Pyroxene of Formula M1 M2 (Si1.5 Al.5) O6
• Authors of publication: Peacor, D R
• Journal of publication: American Mineralogist
• Year of publication: 1967
• Journal volume: 52
• Pages of publication: 31 - 41
• a: 9.794 ± 0.005 Å
• b: 8.906 ± 0.005 Å
• c: 5.319 ± 0.003 Å
• α: 90°
• β: 105.9 ± 0.03°
• γ: 90°
• Cell volume: 446.2 ų
• Number of distinct elements: 6
• 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: 0.064
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No