Information card for entry 9017813

Structure parameters

• Mineral name: Girvasite
• Formula: C H12 Ca2 Mg3 Na O21 P3
• Calculated formula: C H12 Ca2 Mg3 Na O21 P3
• Title of publication: The crystal structure of girvasite, NaCa2Mg3(PO4)3(CO3)(H2O)6, a complex phosphate-carbonate hydrate based upon electroneutral heteropolyhedral layers Note: T = 173 K
• Authors of publication: Krivovichev, S. V.; Chernyatieva, A. P.; Britvin, S. N.; Yakovenchuk, V. N.
• Journal of publication: Russian Geology and Geophysics
• Year of publication: 2015
• Journal volume: 56
• Pages of publication: 155 - 163
• a: 6.4784 Å
• b: 12.2313 Å
• c: 21.3494 Å
• α: 90°
• β: 89.624°
• γ: 90°
• Cell volume: 1691.67 ų
• Ambient diffraction temperature: 173 K
• Number of distinct elements: 7
• Space group number: 14
• Hermann-Mauguin space group symbol: P 1 21/c 1
• Hall space group symbol: -P 2ybc
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No