Information card for entry 9001397

Structure parameters

• Mineral name: Columbite-(Fe)
• Formula: Fe0.333 Nb0.501 O2 Ta0.166
• Calculated formula: Fe0.333 Nb0.500667 O2 Ta0.166333
• Title of publication: Cation distribution in partially ordered columbite from the Kings Mountain pegmatite, North Carolina sample NCP5, T = 100 K
• Authors of publication: Wenger, M.; Armbruster, T.; Geiger, C. A.
• Journal of publication: American Mineralogist
• Year of publication: 1991
• Journal volume: 76
• Pages of publication: 1897 - 1904
• a: 14.189 Å
• b: 5.727 Å
• c: 5.12 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 416.053 ų
• Ambient diffraction temperature: 100 K
• Number of distinct elements: 4
• 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