Information card for entry 9016115

Structure parameters

• Mineral name: Esperite
• Formula: Ca2 O12 Pb Si3 Zn3
• Calculated formula: Ca8 O48 Pb4 Si12 Zn12
• Title of publication: The crystal structure of esperite, with a revised chemical formula, PbCa2(ZnSiO4)3, isostructural with beryllonite
• Authors of publication: Tait, K. T.; Yang, H.; Downs, R. T.; Li, C.; Pinch, W. W.
• Journal of publication: American Mineralogist
• Year of publication: 2010
• Journal volume: 95
• Pages of publication: 699 - 705
• a: 8.7889 Å
• b: 8.2685 Å
• c: 15.2535 Å
• α: 90°
• β: 90.05°
• γ: 90°
• Cell volume: 1108.49 ų
• Number of distinct elements: 5
• Space group number: 14
• Hermann-Mauguin space group symbol: P 1 21/n 1
• Hall space group symbol: -P 2yn
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No