Information card for entry 9014063

Structure parameters

• Mineral name: Nacrite
• Formula: Al2 O9 Si2
• Calculated formula: Al2 O9 Si2
• Title of publication: The crystal structure of Nacrite and a comparison of certain optical properties of the caolin group with its structures _cod_database_code 1011080
• Authors of publication: Gruner, J.
• Journal of publication: Zeitschrift fur Kristallographie
• Year of publication: 1933
• Journal volume: 85
• Pages of publication: 345 - 354
• a: 5.16 Å
• b: 8.93 Å
• c: 28.65999 Å
• α: 90°
• β: 91.72°
• γ: 90°
• Cell volume: 1320.02 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: 1011080
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No