Cristobalite
      Downs R T, Palmer D C
      American Mineralogist 79 (1994) 9-14
      The pressure behavior of alpha cristobalite
      P = 0.73 GPa

      CELL PARAMETERS:   4.9028  4.9028  6.7782   90.000   90.000   90.000
      SPACE GROUP: P4_12_12  
      X-RAY WAVELENGTH:     1.541838
      MAX. ABS. INTENSITY / VOLUME**2:      34.37469539    
               2-THETA      INTENSITY    D-SPACING   H   K   L
                22.38        100.00        3.9725    1   0   1
                25.70          1.27        3.4668    1   1   0
                28.93         11.85        3.0865    1   1   1
                32.11         15.45        2.7879    1   0   2
                36.66         17.15        2.4514    2   0   0
                37.10          2.23        2.4235    1   1   2
                43.37          3.78        2.0862    2   1   1
                45.68          1.68        1.9863    2   0   2
                48.07          6.48        1.8929    1   1   3
                49.51          6.22        1.8409    2   1   2
                54.12          1.54        1.6946    0   0   4
                55.29          3.18        1.6614    2   0   3
                58.06          3.77        1.5887    3   0   1
                61.34          3.84        1.5114    3   1   1
                63.16          5.18        1.4721    3   0   2
                66.30          1.34        1.4099    3   1   2
                67.15          1.69        1.3939    2   0   4
                68.19          1.53        1.3753    2   2   3
                70.20          2.64        1.3408    2   1   4
                70.65          1.54        1.3332    3   2   1
                72.32          2.78        1.3066    1   0   5
                74.18          3.85        1.2784    3   1   3
                75.30          3.40        1.2620    3   2   2
                79.46          1.18        1.2061    4   0   1
                80.83          1.40        1.1891    4   1   0
                82.86          1.18        1.1651    3   2   3
                83.92          1.75        1.1530    2   1   5
                84.75          1.17        1.1439    3   1   4
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       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.