Information card for entry 9001104

Structure parameters

• Mineral name: Bertrandite
• Formula: Be4 H2 O9 Si2
• Calculated formula: Be4 H2 O9 Si2
• Title of publication: Neutron-diffraction study of bertrandite Note: O2y has been corrected
• Authors of publication: Downs, J. W.; Ross, F. K.
• Journal of publication: American Mineralogist
• Year of publication: 1987
• Journal volume: 72
• Pages of publication: 979 - 983
• a: 8.7135 Å
• b: 15.268 Å
• c: 4.5683 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 607.756 ų
• Number of distinct elements: 4
• Space group number: 36
• Hermann-Mauguin space group symbol: C m c 21
• Hall space group symbol: C 2c -2
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No