Hedenbergite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R060040
      Redhammer G J, Amthauer G, Lottermoser W, Treutmann W
      European Journal of Mineralogy 12 (2000) 105-120
      Synthesis and structural properties of clinopyroxenes of the
      hedenbergite CaFeSi2O6 - aegirine NaFeSi2O6 solid-solution series
      Sample: ae40/20

      CELL PARAMETERS:   9.810000   8.985000   5.224000   90.00000   104.5800   90.00000
      SPACE GROUP: C2/c
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                13.65         24.31        6.5460    1   1   0
                18.77         11.47        4.7576    2   0   0
                19.80          5.84        4.5098    0   2   0
                20.26          1.97        4.4076   -1   1   1
                27.35          8.80        3.2730    2   2   0
                29.85        100.00        3.0037   -2   2   1
                29.97         38.97        2.9921    3   1   0
                30.89         10.79        2.9045   -3   1   1
                34.82         35.28        2.5836   -1   3   1
                35.25         49.80        2.5530    2   2   1
                35.45         42.59        2.5389    0   0   2
                35.69          2.44        2.5223   -1   1   2
                37.92          2.94        2.3788    4   0   0
                38.55          4.87        2.3413    3   1   1
                40.08          1.06        2.2549    0   4   0
                40.41         13.51        2.2374    1   1   2
                40.74          1.08        2.2197   -3   1   2
                40.88          2.46        2.2124    0   2   2
                41.47          4.69        2.1820    3   3   0
                42.17         23.76        2.1473   -3   3   1
                42.70         14.06        2.1220   -4   2   1
                44.03          5.29        2.0608    0   4   1
                44.66         10.40        2.0332    2   0   2
                45.12         13.16        2.0134   -4   0   2
                45.96          3.73        1.9783   -1   3   2
                46.23          1.85        1.9674   -2   4   1
                47.68          1.09        1.9105   -5   1   1
                48.31          5.73        1.8873    3   3   1
                49.00          1.00        1.8620    5   1   0
                49.87          1.46        1.8315    1   3   2
                50.12          2.25        1.8229    2   4   1
                50.68          4.01        1.8040    4   2   1
                51.65         15.71        1.7724    1   5   0
                52.72          1.99        1.7389    3   1   2
                54.06          1.29        1.6989   -1   5   1
                54.50          6.00        1.6860    0   4   2
                55.59          1.69        1.6554   -3   1   3
                56.20         14.50        1.6389   -5   3   1
                56.29          5.09        1.6365    4   4   0
                56.71         17.16        1.6254   -2   2   3
                58.25          5.14        1.5859    6   0   0
                58.97          6.33        1.5681    3   5   0
                59.79          6.11        1.5485    4   0   2
                60.16          3.47        1.5399   -6   2   1
                60.42          5.59        1.5339   -6   0   2
                61.49         12.49        1.5096   -1   3   3
                61.78          5.03        1.5033    0   6   0
                62.14          1.78        1.4954   -4   2   3
                62.52          1.20        1.4871   -1   5   2
                63.59          1.15        1.4646    4   2   2
                63.37          1.80        1.4692   -3   3   3
                64.54         18.00        1.4452    5   3   1
                65.75          5.74        1.4217    1   5   2
                65.98          8.63        1.4171   -3   5   2
                66.33          1.15        1.4105    1   3   3
                66.60          4.75        1.4054    2   2   3
                68.06          1.78        1.3788   -2   4   3
                69.77          4.24        1.3491    6   2   1
                70.06          2.06        1.3441    7   1   0
                70.50          6.22        1.3368   -7   1   2
                71.69          4.16        1.3175   -5   3   3
                73.22          6.16        1.2935    0   6   2
                73.71          3.40        1.2862   -3   1   4
                74.36          1.12        1.2765    4   4   2
                74.85          3.42        1.2694    0   0   4
                75.21          7.21        1.2642    3   5   2
                75.29          1.97        1.2630   -4   0   4
                76.32          1.55        1.2485   -1   7   1
                77.80          2.45        1.2283    1   7   1
                80.86          1.94        1.1894    8   0   0
                81.05          1.29        1.1871   -8   2   1
                84.68          2.83        1.1451   -6   0   4
                84.68          2.83        1.1451   -6   0   4
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.