Witherite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R050267
      de Villiers J P R
      American Mineralogist 56 (1971) 758-767
      Crystal structures of aragonite, strontianite, and witherite

      CELL PARAMETERS:   5.312600   8.895800   6.428400   90.00000   90.00000   90.00000
      SPACE GROUP: Pmcn
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                19.52          8.26        4.5567    1   1   0
                20.03          3.80        4.4414    0   2   0
                23.99        100.00        3.7152    1   1   1
                24.41         50.97        3.6519    0   2   1
                27.84         14.35        3.2082    0   0   2
                29.64          4.17        3.0175    0   1   2
                32.64          2.98        2.7457    1   0   2
                33.80         14.79        2.6542    2   0   0
                34.21         21.77        2.6233    1   1   2
                34.51         10.75        2.6007    0   2   2
                34.72         27.19        2.5859    1   3   0
                39.58          7.02        2.2783    2   2   0
                40.65          2.72        2.2207    0   4   0
                42.11         32.36        2.1470    2   2   1
                43.13         15.11        2.0986    0   4   1
                44.31         14.45        2.0450    2   0   2
                45.05         26.49        2.0133    1   3   2
                46.94         20.18        1.9361    1   1   3
                47.18          9.69        1.9270    0   2   3
                49.05          4.01        1.8576    2   2   2
                49.96          2.33        1.8259    0   4   2
                52.76          2.11        1.7354    3   1   0
                53.84          1.97        1.7032    2   4   0
                54.47          1.49        1.6847    1   5   0
                54.81          9.00        1.6752    3   1   1
                55.86          8.70        1.6462    2   4   1
                56.48          8.43        1.6295    1   5   1
                57.45          2.12        1.6041    0   0   4
                59.26          4.65        1.5594    2   2   3
                60.06          2.06        1.5405    0   4   3
                60.67          2.47        1.5264    3   1   2
                61.00          4.34        1.5189    3   3   0
                61.26          3.29        1.5131    1   1   4
                61.46          1.51        1.5087    0   2   4
                61.66          2.57        1.5043    2   4   2
                62.24          2.45        1.4916    1   5   2
                62.76          2.23        1.4805    0   6   0
                68.32          3.39        1.3729    2   0   4
                68.32          7.47        1.3728    3   3   2
                68.87          7.06        1.3631    1   3   4
                69.78          6.36        1.3476    3   1   3
                69.98          3.38        1.3442    0   6   2
                70.70          5.93        1.3323    2   4   3
                71.02          2.36        1.3271    4   0   0
                71.24          5.93        1.3235    1   5   3
                71.98          1.28        1.3116    2   2   4
                73.19          4.37        1.2929    2   6   0
                76.33          3.91        1.2473    4   2   1
                77.21          3.46        1.2352    1   1   5
                77.39          1.62        1.2329    0   2   5
                77.57          3.77        1.2304    3   5   1
                77.88          1.89        1.2263    4   0   2
                78.98          3.25        1.2120    1   7   1
                79.99          3.48        1.1992    2   6   2
                81.39          1.24        1.1821    4   2   2
                81.73          1.08        1.1779    3   1   4
                82.60          1.01        1.1677    2   4   4
                82.60          1.21        1.1677    3   5   2
                83.12          1.02        1.1617    1   5   4
                83.99          1.18        1.1519    1   7   2
                86.80          3.06        1.1216    4   4   1
                87.14          3.22        1.1181    2   2   5
                87.83          1.61        1.1111    0   4   5
                88.66          3.65        1.1029    3   3   4
                89.56          1.48        1.0941    0   8   1
                89.68          2.46        1.0930    4   2   3
                89.68          2.46        1.0930    4   2   3
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.