Information card for entry 1530431

Structure parameters

• Chemical name: (Ca1.96 Na.05) (Mg.24 Al.64 Fe.12) (Si1.39 Al.61) O7
• Formula: Al1.25 Ca1.96 Fe0.12 Mg0.24 Na0.05 O7 Si1.39
• Calculated formula: Al1.25 Ca1.95 Fe0.12 Mg0.24 Na0.05 O7 Si1.39
• Title of publication: The isomorphism in melilites - the refinement of the crystal structures of akermanite and the intermediate melilite
• Authors of publication: Mokeeva, V.I.; Makarov, E.S.
• Journal of publication: Geokhimiya
• Year of publication: 1979
• Journal volume: 1979
• Pages of publication: 1541 - 1544
• a: 7.738 Å
• b: 7.738 Å
• c: 5.045 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 302.078 ų
• Number of distinct elements: 7
• Space group number: 113
• Hermann-Mauguin space group symbol: P -4 21 m
• Hall space group symbol: P -4 2ab
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No