Information card for entry 9015368

Structure parameters

• Mineral name: Akermanite
• Formula: Al0.41 Ca1.5 Fe0.16 Mg0.39 Na0.5 O7 Si2
• Calculated formula: Al0.41 Ca1.5 Fe0.16 Mg0.39 Na0.5 O7 Si2
• Title of publication: Isomorph in melilites: refining of crystal structure of akermanite and intermediate melilite
• Authors of publication: Mokeeva, V.; Makarov, E.
• Journal of publication: Geokhimiya
• Year of publication: 1979
• Journal volume: 10
• Pages of publication: 1541 - 1544
• a: 7.76 Å
• b: 7.76 Å
• c: 5.029 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 302.834 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