Information card for entry 9000285

Structure parameters

• Mineral name: Merwinite
• Formula: Ca3 Mg O8 Si2
• Calculated formula: Ca3 Mg O8 Si2
• Title of publication: Atomic arrangement of merwinite, Ca3Mg[SiO4]2, an unusual dense-packed structure of geophysical interest
• Authors of publication: Moore, P. B.; Araki, T.
• Journal of publication: American Mineralogist
• Year of publication: 1972
• Journal volume: 57
• Pages of publication: 1355 - 1374
• a: 13.254 Å
• b: 5.293 Å
• c: 9.328 Å
• α: 90°
• β: 91.9°
• γ: 90°
• Cell volume: 654.031 ų
• Number of distinct elements: 4
• Space group number: 14
• Hermann-Mauguin space group symbol: P 1 21/a 1
• Hall space group symbol: -P 2yab
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No