Warwickite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R050674
      Bigi S, Brigatti M F, Capedri S
      American Mineralogist 76 (1991) 1380-1388
      Crystal chemistry of Fe- and Cr-rich warwickite
      sample S1

      CELL PARAMETERS:   9.218441   3.093556   9.362950   90.00000   90.00000   90.00000
      SPACE GROUP: Pnma
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                13.47         90.64        6.5689    1   0   1
                18.95          8.49        4.6815    0   0   2
                19.25          1.76        4.6092    2   0   0
                21.27         35.93        4.1741    1   0   2
                21.48          3.17        4.1353    2   0   1
                30.21         22.11        2.9562    1   0   3
                30.41          9.14        2.9374    0   1   1
                30.60          2.89        2.9196    3   0   1
                34.69         51.82        2.5843    2   0   3
                34.90         17.36        2.5689    3   0   2
                34.91        100.00        2.5686    2   1   0
                36.12          1.61        2.4854    1   1   2
                36.24          8.82        2.4771    2   1   1
                39.06          1.23        2.3046    4   0   0
                39.70          3.74        2.2687    1   0   4
                40.01          5.20        2.2519    2   1   2
                41.05         14.62        2.1971    0   1   3
                41.20          1.49        2.1896    3   0   3
                42.26          2.09        2.1372    1   1   3
                42.55         24.46        2.1233    3   1   1
                43.32         18.30        2.0870    2   0   4
                43.75          1.95        2.0676    4   0   2
                45.71          3.39        1.9833    2   1   3
                45.89         25.34        1.9763    3   1   2
                48.88          1.55        1.8620    3   0   4
                49.11          1.04        1.8539    4   0   3
                49.27          2.42        1.8481    4   1   0
                49.64          8.21        1.8351    1   0   5
                49.81          2.71        1.8295    1   1   4
                50.41          5.20        1.8090    5   0   1
                51.07         17.66        1.7872    3   1   3
                52.72          6.07        1.7349    2   0   5
                52.88          1.44        1.7301    2   1   4
                53.37          1.94        1.7154    5   0   2
                57.49          5.79        1.6020    0   1   5
                57.75          2.22        1.5953    3   1   4
                57.95         28.28        1.5902    4   1   3
                58.06          2.71        1.5874    5   0   3
                58.43          7.26        1.5783    1   1   5
                59.12          4.36        1.5616    5   1   1
                59.74         18.43        1.5468    0   2   0
                60.09          3.52        1.5386    1   0   6
                60.19          1.06        1.5364    6   0   0
                61.55          2.47        1.5056    1   2   1
                61.79         21.25        1.5002    5   1   2
                64.16          2.70        1.4504    1   2   2
                65.68          3.37        1.4205    3   1   5
                66.11          1.17        1.4123    5   1   3
                67.24          2.22        1.3914    3   0   6
                67.95          3.68        1.3784    6   0   3
                68.00          9.39        1.3776    1   1   6
                68.09          2.49        1.3760    6   1   0
                68.40          2.65        1.3705    1   2   3
                70.57          1.58        1.3337    2   1   6
                70.96          8.47        1.3272    2   2   3
                71.18          1.76        1.3237    1   0   7
                71.09          3.29        1.3251    3   2   2
                71.70          3.40        1.3154    4   1   5
                71.80          1.65        1.3138    5   0   5
                73.70          2.06        1.2844    6   0   4
                74.84          4.89        1.2677    7   0   2
                76.62          2.98        1.2427    2   2   4
                78.54          3.12        1.2170    1   1   7
                79.74          1.42        1.2017    7   1   1
                80.86          1.73        1.1878    6   0   5
                81.28          2.49        1.1827    1   2   5
                81.88          1.71        1.1756    5   2   1
                83.90          2.39        1.1523    8   0   0
                83.71          2.19        1.1545    2   2   5
                88.01          1.43        1.1089    6   1   5
                88.11          1.12        1.1078    5   2   3
                89.85          1.62        1.0908    1   2   6
                89.85          1.62        1.0908    1   2   6
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.