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 = 240 K
      Locality: synthetic
      _database_code_amcsd 0019110

      CELL PARAMETERS:    5.0820   6.7480   4.5130   90.000   90.000   90.000
      SPACE GROUP: Pnma      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    154.766
      Density (g/cm3):      7.705
      MAX. ABS. INTENSITY / VOLUME**2:      47.04317088    
      RIR:      1.988
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.72          3.19        3.7514    0   1   1         4
                26.42          3.89        3.3740    0   2   0         2
                29.60          1.46        3.0181    1   1   1         8
                35.32          3.22        2.5410    2   0   0         2
                37.70         30.56        2.3860    1   2   1         8
                37.83         19.79        2.3780    2   1   0         4
                39.95         23.98        2.2565    0   0   2         2
                40.75         19.35        2.2142    2   0   1         4
                42.99         58.99        2.1038    2   1   1         8
                43.90         57.67        2.0623    1   0   2         4
                44.64         71.08        2.0298    2   2   0         4
                45.03        100.00        2.0131    0   3   1         4
                46.02         47.81        1.9723    1   1   2         8
                48.54          2.64        1.8757    0   2   2         4
                48.65         27.71        1.8716    1   3   1         8
                49.22         47.99        1.8512    2   2   1         8
                51.97         22.89        1.7597    1   2   2         8
                54.38          8.24        1.6870    0   4   0         2
                54.48          9.52        1.6842    2   3   0         4
                56.20          5.01        1.6369    2   1   2         8
                58.17         14.03        1.5860    3   0   1         4
                58.49          1.18        1.5779    2   3   1         8
                59.91          3.78        1.5439    3   1   1         8
                60.95          1.24        1.5201    1   3   2         8
                61.44          9.12        1.5091    2   2   2         8
                61.45          1.69        1.5089    1   4   1         8
                66.26          2.03        1.4106    1   1   3         8
                66.53          2.70        1.4055    2   4   0         4
                69.66          1.11        1.3497    2   3   2         8
                71.08         17.13        1.3263    1   2   3         8
                73.20          2.18        1.2930    0   5   1         4
                75.64          4.11        1.2572    3   2   2         8
                75.93          2.44        1.2531    1   5   1         8
                78.15         13.01        1.2230    4   0   1         4
                78.83         14.34        1.2142    1   3   3         8
                79.68          1.69        1.2034    4   1   1         8
                80.60          6.06        1.1919    2   5   0         4
                83.26         16.55        1.1605    3   3   2         8
                83.70          1.11        1.1555    3   4   1         8
                83.98         12.67        1.1524    2   5   1         8
                84.21          1.36        1.1498    4   2   1         8
                86.10          8.20        1.1293    1   5   2         8
                86.20          1.89        1.1283    0   0   4         2
                86.53         11.23        1.1248    3   0   3         4
                86.54          4.16        1.1247    0   6   0         2
                88.03          1.81        1.1095    3   1   3         8
                88.36          9.15        1.1062    4   3   0         4
                88.84          4.96        1.1014    1   0   4         4
                89.37          2.53        1.0963    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.