Information card for entry 9001420

Structure parameters

• Mineral name: Armenite
• Formula: Al6 Ba Ca2 H2 O32 Si9
• Calculated formula: Al6 Ba Ca2 H4 O32 Si9
• Title of publication: H2O ordering and superstructures in armenite, BaCa2Al6Si9O30.2H2O: A single-crystal X-ray and TEM study sample from Remigny, Quebec, Canada
• Authors of publication: Armbruster, T.; Czank, M.
• Journal of publication: American Mineralogist
• Year of publication: 1992
• Journal volume: 77
• Pages of publication: 422 - 430
• a: 13.874 Å
• b: 18.66 Å
• c: 10.697 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 2769.33 ų
• Number of distinct elements: 6
• Space group number: 52
• Hermann-Mauguin space group symbol: P n n a
• Hall space group symbol: -P 2a 2bc
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No