Information card for entry 9010117

Structure parameters

• Mineral name: Merrillite
• Formula: Ca9 Fe0.2 Mg0.8 Na0.23 O28 P6.24
• Calculated formula: Ca9 Fe0.2 Mg0.8 Na0.23 O28 P6.24
• Title of publication: The atomic arrangement of merrillite from the Fra Mauro Formation, Apollo 14 lunar mission: The first structure of merrillite from the Moon
• Authors of publication: Hughes, J. M.; Jolliff, B. L.; Gunter, M. E.
• Journal of publication: American Mineralogist
• Year of publication: 2006
• Journal volume: 91
• Pages of publication: 1547 - 1552
• a: 10.2909 Å
• b: 10.2909 Å
• c: 36.8746 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 3381.93 ų
• Number of distinct elements: 6
• 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