Information card for entry 9009374

Structure parameters

• Mineral name: Roggianite
• Formula: Al2 Be Ca2 H7.56 O17.34 Si4
• Calculated formula: Al2 Be Ca2 H6.68 O17.34 Si4
• Title of publication: The revised crystal structure of roggianite: Ca2[Be(OH)2Al2Si4O13]<2.5H2O
• Authors of publication: Giuseppetti, G.; Mazzi, F.; Tadini, C.; Galli, E.
• Journal of publication: Neues Jahrbuch fur Mineralogie, Monatshefte
• Year of publication: 1991
• Journal volume: 1991
• Pages of publication: 307 - 314
• a: 18.33 Å
• b: 18.33 Å
• c: 9.16 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 3077.66 ų
• Number of distinct elements: 6
• Space group number: 140
• Hermann-Mauguin space group symbol: I 4/m c m
• Hall space group symbol: -I 4 2c
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No