Information card for entry 9004161

Structure parameters

• Mineral name: Ekanite
• Formula: Ca1.92 Fe0.06 Mn0.02 O20 Si8 Th0.95 U0.05
• Calculated formula: Ca1.92 Fe0.06 Mn0.02 O20 Si8 Th0.95 U0.05
• Title of publication: A mineralogical study and crystal-structure determination of nonmetamict ekanite, ThCa2Si8O20 Note: Changed O2-x coordinate to match reported bond lengths
• Authors of publication: Szymanski, J. T.; Owens, D. R.; Roberts, A. C.; Ansell, H. G.; Chao, G. Y.
• Journal of publication: The Canadian Mineralogist
• Year of publication: 1982
• Journal volume: 20
• Pages of publication: 65 - 75
• a: 7.483 Å
• b: 7.483 Å
• c: 14.893 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 833.938 ų
• Number of distinct elements: 7
• Space group number: 97
• Hermann-Mauguin space group symbol: I 4 2 2
• Hall space group symbol: I 4 2
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No