Information card for entry 9015571

Structure parameters

• Mineral name: Amesite
• Formula: Al2 H4 Mg2 O9 Si
• Calculated formula: Al12.003 Mg11.997 O54 Si6
• Title of publication: The crystal structure of amesite Note: polytype 6R
• Authors of publication: Steadman, R.; Nuttall, P. M.
• Journal of publication: Acta Crystallographica
• Year of publication: 1962
• Journal volume: 15
• Pages of publication: 510 - 511
• a: 5.31 Å
• b: 5.31 Å
• c: 42.1 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1028.02 ų
• Number of distinct elements: 5
• Space group number: 146
• Hermann-Mauguin space group symbol: R 3 :H
• Hall space group symbol: R 3
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No