Gillespite
      Miletich R, Allan D R, Angel R J
      American Mineralogist 82 (1997) 697-707
      The synthetic Cr2+ silicates BaCrSi4O10 and SrCrSi4O10: The missing links in
      the gillespite-type ABSi4O10 series
      BaCrSi4O10

      CELL PARAMETERS:   7.5314  7.5314 16.0518   90.000   90.000   90.000
      ALTERNATE SETTING FOR SPACE GROUP: P4/ncc    
      X-RAY WAVELENGTH:     1.541838
      MAX. ABS. INTENSITY / VOLUME**2:      29.63652697    
               2-THETA      INTENSITY    D-SPACING   H   K   L
                11.02         37.87        8.0259    0   0   2
                16.65         13.49        5.3255    1   1   0
                20.01         53.40        4.4375    1   1   2
                22.15          5.18        4.0129    0   0   4
                25.15         23.59        3.5416    1   0   4
                26.14        100.00        3.4091    2   0   2
                27.05          7.24        3.2964    2   1   1
                27.84         64.93        3.2049    1   1   4
                28.74         29.45        3.1057    2   1   2
                32.61         33.92        2.7460    2   0   4
                33.50          4.07        2.6753    0   0   6
                33.66         34.60        2.6628    2   2   0
                35.52         12.85        2.5273    2   2   2
                37.54          2.57        2.3960    3   0   2
                37.63         28.43        2.3906    1   1   6
                37.77          9.30        2.3816    3   1   0
                38.20          1.26        2.3558    3   1   1
                39.47         18.65        2.2832    3   1   2
                40.66          8.77        2.2187    2   2   4
                41.40          2.09        2.1809    2   0   6
                43.18          2.83        2.0949    2   1   6
                43.70          2.14        2.0714    3   2   1
                44.22         21.50        2.0481    3   1   4
                44.84          1.55        2.0215    3   2   2
                45.19          4.88        2.0065    0   0   8
                46.86          6.32        1.9388    1   0   8
                47.54          1.51        1.9128    3   1   5
                48.22          3.18        1.8873    2   2   6
                48.34         17.28        1.8829    4   0   0
                48.48          7.13        1.8776    1   1   8
                49.17          6.69        1.8529    3   2   4
                49.74          3.93        1.8331    4   0   2
                50.27          2.06        1.8149    4   1   1
                51.36         21.51        1.7789    3   1   6
                51.62          2.98        1.7708    2   0   8
                52.82          3.33        1.7333    3   3   2
                54.49          6.31        1.6841    4   2   0
                55.25          2.20        1.6625    4   1   4
                55.78         16.76        1.6482    4   2   2
                56.70          9.87        1.6234    3   3   4
                57.51          2.65        1.6025    2   2   8
                59.53          2.88        1.5529    4   2   4
                60.09          3.07        1.5397    4   0   6
                60.21          1.40        1.5369    1   1  10
                60.32          6.45        1.5345    3   1   8
                61.87          1.52        1.4997    4   3   1
                62.76          1.22        1.4804    4   3   2
                62.82          3.92        1.4792    3   3   6
                62.94         10.86        1.4766    2   0  10
                64.11          3.56        1.4526    5   1   2
                64.38          4.47        1.4470    3   2   8
                65.57          1.49        1.4238    5   1   3
                66.28          1.48        1.4102    5   0   4
                67.58          8.65        1.3861    5   1   4
                68.05          3.88        1.3778    5   2   2
                68.22          1.66        1.3747    2   2  10
                68.32          3.77        1.3730    4   0   8
                69.60          1.77        1.3507    4   1   8
                70.38          1.93        1.3376    0   0  12
                70.77          1.79        1.3314    4   4   0
                70.78          1.37        1.3311    3   1  10
                70.88          2.06        1.3295    3   3   8
                71.88          1.42        1.3134    4   4   2
                73.20          4.90        1.2930    5   1   6
                73.29          1.63        1.2916    5   3   0
                73.40          2.12        1.2899    4   2   8
                74.39          1.88        1.2752    5   3   2
                75.78          1.04        1.2552    6   0   0
                76.76          1.40        1.2417    5   1   7
                76.87          1.98        1.2402    6   0   2
                77.66          1.91        1.2295    5   3   4
                79.58          1.57        1.2046    5   0   8
                80.32          4.58        1.1953    2   2  12
                80.69          1.17        1.1908    6   2   0
                80.80          2.39        1.1895    5   1   8
                81.76          2.73        1.1779    6   2   2
                82.75          1.39        1.1663    3   1  12
                83.02          5.64        1.1632    5   3   6
                83.13          6.03        1.1619    4   2  10
                84.95          2.55        1.1416    6   2   4
                88.04          1.40        1.1094    4   4   8
                89.98          1.66        1.0905    4   0  12
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.