Information card for entry 9003735

Structure parameters

• Mineral name: Ferrocolumbite
• Formula: Fe0.264 Mn0.07 Nb0.633 O2 Ta0.033
• Calculated formula: Fe0.263667 Mn0.0696667 Nb0.633333 O2 Ta0.0333333
• Title of publication: Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution: A single-crystal X-ray diffraction study Sample: BRA n18 Qm=0.745 from S. Jose de Safira, Minas Gerais, Brazil Sample: Annealed at T = 650 C for t = 200 m Note: Occupancies calculated assuming complete Fe/Mn disorder
• Authors of publication: Tarantino S C; Zema M
• Journal of publication: American Mineralogist
• Year of publication: 2005
• Journal volume: 90
• Pages of publication: 1291 - 1300
• a: 14.2582 Å
• b: 5.729 Å
• c: 5.0748 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 414.536 ų
• Sample thermal history: Annealed at T = 650 C for t = 200 m
• Number of distinct elements: 5
• Space group number: 60
• Hermann-Mauguin space group symbol: P b c n
• Hall space group symbol: -P 2n 2ab
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No