Information card for entry 9007720

Structure parameters

• Mineral name: Combeite
• Formula: Ca3.8 Na4.4 O18 Si6
• Calculated formula: Ca3.8 Na4.4 O18 Si6
• Title of publication: Revised data for combeite, Na2Ca2Si3O9
• Authors of publication: Fischer, R. X.; Tillmanns, E.
• Journal of publication: Acta Crystallographica, Section C
• Year of publication: 1987
• Journal volume: 43
• Journal issue: 9
• Pages of publication: 1852 - 1854
• a: 10.464 Å
• b: 10.464 Å
• c: 13.176 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1249.42 ų
• Number of distinct elements: 4
• Space group number: 152
• Hermann-Mauguin space group symbol: P 31 2 1
• Hall space group symbol: P 31 2"
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No