Information card for entry 9001846

Structure parameters

• Mineral name: Clarkeite
• Formula: Na O4 U
• Calculated formula: Na O4 U
• Title of publication: Clarkeite: New chemical and structural data
• Authors of publication: Finch, R. J.; Ewing, R. C.
• Journal of publication: American Mineralogist
• Year of publication: 1997
• Journal volume: 82
• Pages of publication: 607 - 619
• a: 3.954 Å
• b: 3.954 Å
• c: 17.66 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 239.108 ų
• Number of distinct elements: 3
• Space group number: 166
• Hermann-Mauguin space group symbol: R -3 m :H
• Hall space group symbol: -R 3 2"
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No