Columbite-(Fe) Tarantino S C, Zema M American Mineralogist 90 (2005) 1291-1300 Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution: A single-crystal X-ray diffraction study Sample: BRA n18 Qm=0.902 from S. Jose de Safira, Minas Gerais, Brazil Sample: Annealed at T = 800 C for t = 40 m Note: Occupancies calculated assuming complete Fe/Mn disorder _database_code_amcsd 0003858 CELL PARAMETERS: 14.2744 5.7321 5.0616 90.000 90.000 90.000 SPACE GROUP: Pbcn X-RAY WAVELENGTH: 1.541838 Cell Volume: 414.152 Density (g/cm3): 5.553 MAX. ABS. INTENSITY / VOLUME**2: 127.0336215 RIR: 7.449 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 12.40 3.81 7.1372 2 0 0 2 16.67 1.08 5.3192 1 1 0 4 24.27 6.35 3.6668 1 1 1 8 24.31 26.34 3.6611 3 1 0 4 24.95 3.25 3.5686 4 0 0 2 30.13 100.00 2.9665 3 1 1 8 31.21 9.28 2.8661 0 2 0 2 35.47 13.40 2.5308 0 0 2 2 36.01 14.29 2.4940 0 2 1 4 37.82 6.79 2.3791 6 0 0 2 40.37 2.79 2.2344 3 0 2 4 40.85 5.22 2.2089 3 2 1 8 43.47 7.89 2.0818 3 1 2 8 47.95 6.75 1.8971 0 2 2 4 49.81 6.13 1.8306 6 2 0 4 50.83 1.66 1.7962 7 1 1 8 51.54 13.17 1.7731 3 3 0 4 52.81 16.02 1.7334 6 0 2 4 53.21 20.88 1.7214 6 2 1 8 54.86 1.04 1.6734 3 3 1 8 60.41 13.38 1.5323 3 1 3 8 62.63 4.81 1.4832 6 2 2 8 63.58 10.99 1.4633 9 1 1 8 64.04 7.57 1.4540 0 2 3 4 64.13 12.02 1.4522 3 3 2 8 67.99 5.35 1.3788 0 4 1 4 72.20 2.00 1.3085 9 1 2 8 75.07 1.49 1.2654 0 0 4 2 76.84 2.06 1.2406 6 2 3 8 78.35 2.81 1.2204 9 3 0 4 80.27 1.19 1.1960 3 1 4 8 80.52 5.51 1.1930 6 4 1 8 80.79 2.17 1.1895 12 0 0 2 83.51 1.14 1.1576 0 2 4 4 85.77 3.60 1.1328 9 1 3 8 87.27 3.20 1.1172 6 0 4 4 87.53 1.38 1.1145 3 5 0 4 89.06 4.80 1.0993 9 3 2 8 89.79 2.03 1.0922 0 4 3 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.