Information card for entry 9001173

Structure parameters

• Mineral name: Anorthite
• Formula: Al2 Ca O8 Si2
• Calculated formula: Al2 Ca O8 Si2
• Title of publication: High-pressure structure of anorthite Sample: P = 31 kbar
• Authors of publication: Angel, R. J.
• Journal of publication: American Mineralogist
• Year of publication: 1988
• Journal volume: 73
• Pages of publication: 1114 - 1119
• a: 8.042 Å
• b: 12.748 Å
• c: 13.964 Å
• α: 92.2°
• β: 115.27°
• γ: 92.65°
• Cell volume: 1290.52 ų
• Ambient diffracton pressure: 3100000 kPa
• Number of distinct elements: 4
• Space group number: 2
• Hermann-Mauguin space group symbol: I -1
• Hall space group symbol: -P 1 (-1/2*x+1/2*y+1/2*z,1/2*x-1/2*y+1/2*z,1/2*x+1/2*y-1/2*z)
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No