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 = 260 K
      Locality: synthetic
      _database_code_amcsd 0019111

      CELL PARAMETERS:    5.0820   6.7500   4.5140   90.000   90.000   90.000
      SPACE GROUP: Pnma      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    154.846
      Density (g/cm3):      7.701
      MAX. ABS. INTENSITY / VOLUME**2:      48.42692222    
      RIR:      2.048
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.71          3.10        3.7523    0   1   1         4
                26.41          3.79        3.3750    0   2   0         2
                29.59          1.50        3.0186    1   1   1         8
                35.32          3.18        2.5410    2   0   0         2
                37.69         30.21        2.3865    1   2   1         8
                37.83         20.01        2.3781    2   1   0         4
                39.94         23.64        2.2570    0   0   2         2
                40.75         18.92        2.2143    2   0   1         4
                42.99         58.54        2.1040    2   1   1         8
                43.89         58.10        2.0627    1   0   2         4
                44.64         71.13        2.0300    2   2   0         4
                45.02        100.00        2.0137    0   3   1         4
                46.01         47.92        1.9727    1   1   2         8
                48.52          2.57        1.8761    0   2   2         4
                48.64         28.02        1.8721    1   3   1         8
                49.22         48.32        1.8514    2   2   1         8
                51.95         23.00        1.7600    1   2   2         8
                54.37          8.27        1.6875    0   4   0         2
                54.47          9.49        1.6845    2   3   0         4
                56.19          5.07        1.6371    2   1   2         8
                58.17         14.15        1.5860    3   0   1         4
                58.48          1.24        1.5782    2   3   1         8
                59.91          3.95        1.5440    3   1   1         8
                60.93          1.25        1.5205    1   3   2         8
                61.43          1.73        1.5093    1   4   1         8
                61.43          9.19        1.5093    2   2   2         8
                66.24          2.07        1.4109    1   1   3         8
                66.52          2.81        1.4057    2   4   0         4
                69.65          1.12        1.3500    2   3   2         8
                71.06         17.74        1.3266    1   2   3         8
                73.17          2.26        1.2934    0   5   1         4
                75.63          4.38        1.2573    3   2   2         8
                75.91          2.57        1.2534    1   5   1         8
                78.15         13.75        1.2230    4   0   1         4
                78.80         15.21        1.2145    1   3   3         8
                79.68          1.72        1.2034    4   1   1         8
                80.58          6.44        1.1922    2   5   0         4
                83.24         17.57        1.1607    3   3   2         8
                83.68          1.13        1.1557    3   4   1         8
                83.95         13.40        1.1527    2   5   1         8
                84.21          1.40        1.1498    4   2   1         8
                86.08          8.73        1.1296    1   5   2         8
                86.18          2.05        1.1285    0   0   4         2
                86.51          4.45        1.1250    0   6   0         2
                86.52         11.94        1.1250    3   0   3         4
                88.01          1.98        1.1097    3   1   3         8
                88.35          9.83        1.1063    4   3   0         4
                88.82          5.28        1.1017    1   0   4         4
                89.34          2.71        1.0966    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.