Hematite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R060190
      Blake R L, Hessevick R E, Zoltai T, Finger L W
      American Mineralogist 51 (1966) 123-129
      Refinement of the hematite structure

      CELL PARAMETERS:   5.038000   5.038000   13.77200   90.00000   90.00000   120.0000
      SPACE GROUP: R-3c
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                24.19         28.73        3.6820    0   1   2
                33.21        100.00        2.6989    1   0   4
                35.67         73.67        2.5177    1   1   0
                39.34          2.05        2.2907    0   0   6
                40.91         17.99        2.2064    1   1   3
                43.55          1.94        2.0783    2   0   2
                49.51         37.43        1.8410    0   2   4
                54.12         45.13        1.6943    1   1   6
                57.49          2.34        1.6027    1   2   2
                57.66          8.52        1.5985    0   1   8
                62.48         30.65        1.4861    2   1   4
                64.04         29.47        1.4536    3   0   0
                69.65          3.04        1.3495    2   0   8
                72.02         10.86        1.3109    1   0  10
                72.34          1.73        1.3057    1   1   9
                75.50          6.96        1.2588    2   2   0
                77.79          1.26        1.2273    0   3   6
                77.79          1.26        1.2273    3   0   6
                80.62          1.58        1.1911    3   1   2
                80.77          4.23        1.1894    1   2   8
                83.02          5.63        1.1627    0   2  10
                84.98          8.65        1.1408    1   3   4
                88.61          7.94        1.1032    2   2   6
                88.61          7.94        1.1032    2   2   6
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.