Information card for entry 9004540

Structure parameters

• Mineral name: Calciotantite
• Formula: Ca Nb1.179 O11 Ta2.821
• Calculated formula: Ca Nb1.179 O11 Ta2.821
• Title of publication: Ta-Nb order in the crystal structure of niobium-rich calciotantite
• Authors of publication: Cooper, M. A.; Hawthorne, F. C.; Cerny, P.
• Journal of publication: The Canadian Mineralogist
• Year of publication: 1999
• Journal volume: 37
• Pages of publication: 1289 - 1294
• a: 6.2261 Å
• b: 6.2261 Å
• c: 12.28 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 412.25 ų
• Number of distinct elements: 4
• Space group number: 182
• Hermann-Mauguin space group symbol: P 63 2 2
• Hall space group symbol: P 6c 2c
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No