Information card for entry 9016663

Structure parameters

• Mineral name: Merrillite
• Formula: Ca9.45 Fe0.22 Mg0.78 O28 P7
• Calculated formula: Ca56.7 Fe1.32 Mg4.68 O168 P42
• Title of publication: Phosphate in Angra Dos Reis: Structure and composition of the Ca3(PO4)2 minerals
• Authors of publication: Dowty, E.
• Journal of publication: Earth and Planetary Science Letters
• Year of publication: 1977
• Journal volume: 35
• Pages of publication: 347 - 351
• a: 10.362 Å
• b: 10.362 Å
• c: 37.106 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 3450.34 ų
• Number of distinct elements: 5
• Space group number: 161
• Hermann-Mauguin space group symbol: R 3 c :H
• Hall space group symbol: R 3 -2"c
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No