Hematite-proto
      Gualtieri A, Venturelli P
      American Mineralogist 84 (1999) 895-904
      In situ study of the goethite-hematite phase transformation by real time
      synchrotron powder diffraction
      Sample at T = 779 C
      _database_code_amcsd 0002230

      CELL PARAMETERS:    5.0410   5.0410  13.7251   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    302.050
      Density (g/cm3):      5.084
      MAX. ABS. INTENSITY / VOLUME**2:      38.63599947    
      RIR:      2.474
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                24.16         31.45        3.6835    0   1   2         6
                33.21        100.00        2.6977    1   0   4         6
                35.62         67.30        2.5205    1   1   0         6
                39.39          1.62        2.2875    0   0   6         2
                40.88         17.07        2.2076    1   1   3        12
                43.51          1.86        2.0801    2   0   2         6
                49.49         24.46        1.8417    0   2   4         6
                54.14         27.95        1.6939    1   1   6        12
                57.44          1.42        1.6043    1   2   2        12
                57.74          4.20        1.5968    0   1   8         6
                62.45         13.87        1.4870    2   1   4        12
                63.98         13.64        1.4552    3   0   0         6
                69.71          1.10        1.3489    2   0   8         6
                72.14          3.62        1.3093    1   0  10         6
                75.43          2.05        1.2602    2   2   0         6
                80.82          1.04        1.1893    1   2   8        12
                83.13          1.35        1.1619    0   2  10         6
                84.94          1.94        1.1418    1   3   4        12
                88.60          1.59        1.1038    2   2   6        12
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.