Cohenite
      Wood I G, Vocadlo L, Knight K S, Dobson D P, Marshall W G, Price G D, Brodholt J
      Journal of Applied Crystallography 37 (2004) 82-90
      Thermal expansion and crystal structure of cementite, Fe3C, between 4 and 600 K
      determined by time-of-flight neutron powder diffraction
      Note: T = 600 K
      Locality: synthetic
      _database_code_amcsd 0019128

      CELL PARAMETERS:    5.0870   6.7790   4.5260   90.000   90.000   90.000
      SPACE GROUP: Pnma      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    156.078
      Density (g/cm3):      7.640
      MAX. ABS. INTENSITY / VOLUME**2:      43.74513192    
      RIR:      1.864
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.64          3.87        3.7642    0   1   1         4
                26.29          4.42        3.3895    0   2   0         2
                29.52          1.55        3.0258    1   1   1         8
                35.29          4.84        2.5435    2   0   0         2
                37.57         26.86        2.3939    1   2   1         8
                37.78         17.52        2.3814    2   1   0         4
                39.83         25.38        2.2630    0   0   2         2
                40.69         15.36        2.2173    2   0   1         4
                42.91         61.80        2.1075    2   1   1         8
                43.78         59.07        2.0676    1   0   2         4
                44.54         80.65        2.0344    2   2   0         4
                44.83        100.00        2.0217    0   3   1         4
                45.89         46.22        1.9777    1   1   2         8
                48.36          2.88        1.8821    0   2   2         4
                48.45         27.73        1.8788    1   3   1         8
                49.10         44.53        1.8556    2   2   1         8
                51.79         24.20        1.7651    1   2   2         8
                54.12          9.23        1.6947    0   4   0         2
                54.26          1.41        1.6907    2   0   2         4
                54.30          7.67        1.6893    2   3   0         4
                56.06          4.92        1.6404    2   1   2         8
                58.09         12.11        1.5879    3   0   1         4
                58.30          1.87        1.5827    2   3   1         8
                59.82          4.52        1.5460    3   1   1         8
                60.71          1.81        1.5254    1   3   2         8
                61.17          1.29        1.5151    1   4   1         8
                61.27          9.93        1.5129    2   2   2         8
                66.05          1.94        1.4146    1   1   3         8
                66.27          2.39        1.4104    2   4   0         4
                70.83         15.54        1.3303    1   2   3         8
                72.82          2.18        1.2988    0   5   1         4
                75.46          4.76        1.2598    3   2   2         8
                75.56          2.27        1.2584    1   5   1         8
                78.05         12.10        1.2243    4   0   1         4
                78.52         13.11        1.2182    1   3   3         8
                79.56          1.12        1.2048    4   1   1         8
                80.23          4.74        1.1964    2   5   0         4
                83.01         13.53        1.1633    3   3   2         8
                83.41          1.00        1.1587    3   4   1         8
                83.59         12.66        1.1567    2   5   1         8
                84.05          1.20        1.1515    4   2   1         8
                85.68          6.98        1.1338    1   5   2         8
                85.89          1.51        1.1315    0   0   4         2
                86.05          3.64        1.1298    0   6   0         2
                86.31          9.33        1.1271    3   0   3         4
                87.79          1.79        1.1119    3   1   3         8
                88.15          7.56        1.1083    4   3   0         4
                88.53          4.72        1.1045    1   0   4         4
                88.97          2.29        1.1002    1   4   3         8
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       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.