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 = 0.6 GPa
      Locality: Ellora Caves, India
      _database_code_amcsd 0018343

      CELL PARAMETERS:    4.9080   4.9080   6.7840   90.000   90.000   90.000
      SPACE GROUP: P4_12_12  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    163.416
      Density (g/cm3):      2.442
      MAX. ABS. INTENSITY / VOLUME**2:      34.26013043    
      RIR:      4.569
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                22.36        100.00        3.9765    1   0   1         8
                25.67          1.10        3.4705    1   1   0         4
                28.90         12.07        3.0897    1   1   1         8
                32.08         15.00        2.7904    1   0   2         8
                36.62         16.07        2.4540    2   0   0         4
                37.06          2.02        2.4258    1   1   2         8
                43.33          3.00        2.0883    2   1   1         8
                45.63          1.92        1.9882    2   0   2         8
                48.02          6.40        1.8946    1   1   3         8
                49.46          6.25        1.8428    2   1   2         8
                54.07          1.30        1.6960    0   0   4         2
                55.24          2.85        1.6630    2   0   3         8
                57.99          3.80        1.5904    3   0   1         8
                61.27          3.36        1.5130    3   1   1         8
                63.09          4.29        1.4736    3   0   2         8
                66.22          1.23        1.4113    3   1   2         8
                67.08          1.37        1.3952    2   0   4         8
                68.11          1.37        1.3766    2   2   3         8
                70.12          2.30        1.3420    2   1   4         8
                70.57          1.22        1.3346    3   2   1         8
                72.24          2.43        1.3077    1   0   5         8
                74.09          3.24        1.2796    3   1   3         8
                75.21          2.82        1.2633    3   2   2         8
                79.36          1.00        1.2074    4   0   1         8
                80.73          1.19        1.1904    4   1   0         8
                82.76          1.10        1.1662    3   2   3         8
                83.82          1.43        1.1541    2   1   5         8
                84.65          1.19        1.1450    3   1   4         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.