Cristobalite
      Dera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T
      Physics and Chemistry of Minerals 38 (2011) 517-529
      New insights into the high-pressure polymorphism of SiO2 cristobalite
      Note: P = 5.4 GPa
      Locality: Ellora Caves, India
      _database_code_amcsd 0018345

      CELL PARAMETERS:    4.6820   4.6820   6.3110   90.000   90.000   90.000
      SPACE GROUP: P4_12_12  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    138.344
      Density (g/cm3):      2.884
      MAX. ABS. INTENSITY / VOLUME**2:      27.03155294    
      RIR:      3.052
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.66        100.00        3.7602    1   0   1         8
                26.93          4.79        3.3107    1   1   0         4
                30.49         21.39        2.9318    1   1   1         8
                34.27         31.54        2.6167    1   0   2         8
                38.45         29.98        2.3410    2   0   0         4
                41.13          1.67        2.1949    2   0   1         8
                45.65          7.55        1.9873    2   1   1         8
                51.47          8.21        1.7755    1   1   3         8
                52.45          6.95        1.7447    2   1   2         8
                55.51          2.77        1.6553    2   2   0         4
                58.50          5.24        1.5777    0   0   4         2
                59.03          4.03        1.5647    2   0   3         8
                61.17          1.28        1.5150    3   0   1         8
                62.76          2.78        1.4806    3   1   0         8
                63.46          1.91        1.4659    2   2   2         8
                64.66          6.69        1.4414    3   1   1         8
                66.88         13.40        1.3989    3   0   2         8
                72.21          3.40        1.3083    2   0   4         8
                74.62          3.27        1.2719    3   2   1         8
                75.44          1.82        1.2601    2   1   4         8
                78.48          4.43        1.2187    1   0   5         8
                79.10          7.19        1.2108    3   1   3         8
                79.88          5.89        1.2008    3   2   2         8
                87.23          2.70        1.1176    4   1   1         8
                88.48          1.08        1.1050    3   2   3         8
                88.63          2.03        1.1036    3   3   0         4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.