Information card for entry 9001992

Structure parameters

• Mineral name: Armenite
• Formula: Al6 Ba Ca2 H4 O32.11 Si9
• Calculated formula: Al6 Ba Ca2 H4 O32.11 Si9
• Title of publication: Si,Al ordering in the double-ring silicate armenite, BaCa2Al6Si9O30.2H2O: A single-crystal X-ray and 29Si MAS NMR study
• Authors of publication: Armbruster, T.
• Journal of publication: American Mineralogist
• Year of publication: 1999
• Journal volume: 84
• Pages of publication: 92 - 101
• a: 18.66 Å
• b: 10.697 Å
• c: 13.874 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 2769.33 ų
• Number of distinct elements: 6
• Space group number: 30
• Hermann-Mauguin space group symbol: P n c 2
• Hall space group symbol: P 2 -2bc
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No