Columbite-(Mn) 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: KRA n4 Qm=0.674 from Kragero, Norway Sample: Annealed at T = 500 C for t = 15 h Note: Occupancies calculated assuming complete Fe/Mn disorder _database_code_amcsd 0003861 CELL PARAMETERS: 14.3440 5.7390 5.1050 90.000 90.000 90.000 SPACE GROUP: Pbcn X-RAY WAVELENGTH: 1.541838 Cell Volume: 420.245 Density (g/cm3): 5.468 MAX. ABS. INTENSITY / VOLUME**2: 121.8183934 RIR: 7.255 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 12.34 2.86 7.1720 2 0 0 2 24.14 3.61 3.6862 1 1 1 8 24.23 26.23 3.6735 3 1 0 4 24.83 1.86 3.5860 4 0 0 2 29.97 100.00 2.9817 3 1 1 8 31.17 9.09 2.8695 0 2 0 2 35.16 13.14 2.5525 0 0 2 2 35.90 14.21 2.5014 0 2 1 4 37.62 6.84 2.3907 6 0 0 2 40.04 2.78 2.2517 3 0 2 4 40.71 5.13 2.2164 3 2 1 8 43.16 7.79 2.0962 3 1 2 8 47.69 6.63 1.9072 0 2 2 4 49.63 6.08 1.8367 6 2 0 4 51.45 12.83 1.7761 3 3 0 4 52.44 15.90 1.7449 6 0 2 4 52.98 20.51 1.7283 6 2 1 8 59.91 12.83 1.5440 3 1 3 8 62.27 4.63 1.4909 6 2 2 8 63.23 10.88 1.4706 9 1 1 8 63.57 7.18 1.4637 0 2 3 4 63.85 11.55 1.4579 3 3 2 8 67.85 5.06 1.3812 0 4 1 4 71.73 1.95 1.3159 9 1 2 8 74.32 1.40 1.2763 0 0 4 2 76.28 1.99 1.2483 6 2 3 8 78.04 2.75 1.2245 9 3 0 4 79.50 1.11 1.2056 3 1 4 8 80.27 5.24 1.1960 6 4 1 8 80.32 2.13 1.1953 12 0 0 2 82.77 1.01 1.1661 0 2 4 4 85.10 3.44 1.1401 9 1 3 8 86.43 2.89 1.1259 6 0 4 4 87.38 1.27 1.1161 3 5 0 4 88.58 4.54 1.1040 9 3 2 8 89.31 1.84 1.0969 0 4 3 4 89.99 1.86 1.0903 3 5 1 8 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.