Cristobalite
      Downs R T, Palmer D C
      American Mineralogist 79 (1994) 9-14
      The pressure behavior of alpha cristobalite
      P = 0.19 GPa
      Locality: Ellora Caves, India
      _database_code_amcsd 0001630

      CELL PARAMETERS:    4.9501   4.9501   6.8760   90.000   90.000   90.000
      SPACE GROUP: P4_12_12  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    168.486
      Density (g/cm3):      2.368
      MAX. ABS. INTENSITY / VOLUME**2:      35.57209648    
      RIR:      4.891
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                22.13        100.00        4.0173    1   0   1         8
                28.62         10.02        3.1193    1   1   1         8
                31.69         12.55        2.8238    1   0   2         8
                36.30         15.08        2.4750    2   0   0         4
                36.64          3.49        2.4527    1   1   2         8
                42.92          2.98        2.1072    2   1   1         8
                45.14          2.28        2.0087    2   0   2         8
                47.41          5.72        1.9175    1   1   3         8
                48.94          5.76        1.8613    2   1   2         8
                53.29          1.07        1.7190    0   0   4         2
                54.57          2.79        1.6817    2   0   3         8
                57.43          4.17        1.6045    3   0   1         8
                60.67          3.07        1.5263    3   1   1         8
                62.43          3.66        1.4876    3   0   2         8
                65.52          2.06        1.4246    3   1   2         8
                66.19          1.55        1.4119    2   0   4         8
                67.31          1.50        1.3910    2   2   3         8
                69.19          2.54        1.3577    2   1   4         8
                69.86          1.20        1.3463    3   2   1         8
                71.16          2.25        1.3250    1   0   5         8
                73.22          2.85        1.2927    3   1   3         8
                74.41          2.68        1.2750    3   2   2         8
                78.54          1.23        1.2180    4   0   1         8
                79.90          1.56        1.2006    4   1   0         8
                81.77          1.38        1.1778    3   2   3         8
                82.59          1.63        1.1682    2   1   5         8
                83.53          1.01        1.1574    3   1   4         8
                89.73          1.12        1.0928    4   2   1         8
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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.