Information card for entry 9006115

Structure parameters

• Mineral name: Akermanite
• Formula: Al0.51 Ca2 Mg0.71 O7 Si1.74
• Calculated formula: Al0.51 Ca2 Mg0.71 O7 Si1.74
• Title of publication: Neutron powder diffraction study of the akermanite-gehlenite solid solution series Sample: 75% Ak
• Authors of publication: Swainson, I. P.; Dove, M. T.; Schmahl, W. W.; Putnis, A.
• Journal of publication: Physics and Chemistry of Minerals
• Year of publication: 1992
• Journal volume: 19
• Pages of publication: 185 - 195
• a: 7.7853 Å
• b: 7.7853 Å
• c: 5.0211 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 304.333 ų
• Number of distinct elements: 5
• 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