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=0.898 from S. Jose de Safira, Minas Gerais, Brazil Sample: Annealed at T = 800 C for t = 7 m Note: Occupancies calculated assuming complete Fe/Mn disorder _database_code_amcsd 0003857 CELL PARAMETERS: 14.2733 5.7317 5.0646 90.000 90.000 90.000 SPACE GROUP: Pbcn X-RAY WAVELENGTH: 1.541838 Cell Volume: 414.336 Density (g/cm3): 5.550 MAX. ABS. INTENSITY / VOLUME**2: 127.0607543 RIR: 7.454 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 12.40 3.76 7.1367 2 0 0 2 16.67 1.08 5.3189 1 1 0 4 24.27 6.30 3.6678 1 1 1 8 24.31 26.33 3.6609 3 1 0 4 24.95 3.22 3.5683 4 0 0 2 30.12 100.00 2.9669 3 1 1 8 31.21 9.21 2.8658 0 2 0 2 35.45 13.44 2.5323 0 0 2 2 36.01 14.32 2.4942 0 2 1 4 37.82 6.78 2.3789 6 0 0 2 40.35 2.79 2.2354 3 0 2 4 40.85 5.22 2.2091 3 2 1 8 43.45 7.93 2.0826 3 1 2 8 47.94 6.75 1.8976 0 2 2 4 49.82 6.14 1.8304 6 2 0 4 50.83 1.65 1.7962 7 1 1 8 51.55 13.19 1.7730 3 3 0 4 52.80 16.06 1.7338 6 0 2 4 53.21 20.96 1.7215 6 2 1 8 54.86 1.02 1.6734 3 3 1 8 60.38 13.42 1.5330 3 1 3 8 62.62 4.80 1.4835 6 2 2 8 63.58 11.01 1.4633 9 1 1 8 64.01 7.61 1.4546 0 2 3 4 64.12 12.08 1.4524 3 3 2 8 67.99 5.36 1.3788 0 4 1 4 72.19 2.00 1.3086 9 1 2 8 75.02 1.50 1.2661 0 0 4 2 76.81 2.07 1.2410 6 2 3 8 78.36 2.82 1.2203 9 3 0 4 80.22 1.20 1.1966 3 1 4 8 80.52 5.52 1.1929 6 4 1 8 80.80 2.18 1.1894 12 0 0 2 83.46 1.15 1.1582 0 2 4 4 85.75 3.63 1.1331 9 1 3 8 87.22 3.23 1.1177 6 0 4 4 87.54 1.38 1.1144 3 5 0 4 89.06 4.83 1.0993 9 3 2 8 89.77 2.04 1.0925 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.