Information card for entry 9016423

Structure parameters

• Mineral name: Nacrite
• Formula: Al2 O9 Si2
• Calculated formula: Al2 O9 Si2
• Title of publication: The Crystal Structure of Nacrite Al2 O3 . 2Si O2 . 2H2 O and the Polymorphism of the Kaolin Minerals.
• Authors of publication: Hendricks, S.
• Journal of publication: Zeitschrift fur Kristallographie
• Year of publication: 1939
• Journal volume: 100
• Pages of publication: 509 - 518
• a: 8.94 Å
• b: 5.14 Å
• c: 43 Å
• α: 90°
• β: 90.33°
• γ: 90°
• Cell volume: 1975.89 ų
• Number of distinct elements: 3
• Space group number: 9
• Hermann-Mauguin space group symbol: C 1 c 1
• Hall space group symbol: C -2yc
• Duplicate of: 1011062
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No