Information card for entry 9004084

Structure parameters

• Mineral name: Omphacite
• Formula: Al0.525 Ca0.492 Fe0.475 Na0.508 O6 Si2
• Calculated formula: Al0.525 Ca0.492 Fe0.475 Na0.508 O6 Si2
• Title of publication: Two crystal structure refinements of a P2/n titanian ferro-omphacite Sample: Tronto
• Authors of publication: Curtis, L.; Gittins, J.; Kocman, V.; Rucklidge, J. C.; Hawthorne, F. C.; Ferguson, R. B.
• Journal of publication: The Canadian Mineralogist
• Year of publication: 1975
• Journal volume: 13
• Pages of publication: 62 - 67
• a: 9.622 Å
• b: 8.826 Å
• c: 5.279 Å
• α: 90°
• β: 106.92°
• γ: 90°
• Cell volume: 428.906 ų
• Number of distinct elements: 6
• Space group number: 13
• Hermann-Mauguin space group symbol: P 1 2/n 1
• Hall space group symbol: -P 2yac
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No