Information card for entry 9000055

Structure parameters

• Mineral name: Melilite
• Formula: Al0.4 Ca1.7 K0.1 Mg0.5 Na0.2 O7 Si2
• Calculated formula: Al0.4 Ca1.7 K0.1 Mg0.5 Na0.2 O7 Si2
• Title of publication: Reexamination of the crystal structure of melilite
• Authors of publication: Smith, J. V.
• Journal of publication: American Mineralogist
• Year of publication: 1953
• Journal volume: 38
• Pages of publication: 643 - 661
• a: 7.789 Å
• b: 7.789 Å
• c: 5.018 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 304.435 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