Information card for entry 9001260

Structure parameters

• Mineral name: Anorthite
• Formula: Al Ca0.5 O4 Si
• Calculated formula: Al Ca0.5 O4 Si
• Title of publication: Structural variation associated with compositional variation and order-disorder behavior in anorthite-rich feldspars
• Authors of publication: Angel, R. J.; Carpenter, M. A.; Finger, L. W.
• Journal of publication: American Mineralogist
• Year of publication: 1990
• Journal volume: 75
• Pages of publication: 150 - 162
• a: 8.1796 Å
• b: 12.8747 Å
• c: 14.172 Å
• α: 93.134°
• β: 115.885°
• γ: 91.236°
• Cell volume: 1338.99 ų
• 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