Cristobalite high
      Wyckoff R
      Zeitschrift fur Kristallographie 62 (1925) 189-200
      Die Kristallstruktur von $-beta-Crystobalit Si O2 (bei hohen
      Temperaturen stabile Form).
      _cod_database_code 1010944
      _database_code_amcsd 0017665

      CELL PARAMETERS:    7.1200   7.1200   7.1200   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    360.944
      Density (g/cm3):      2.211
      MAX. ABS. INTENSITY / VOLUME**2:      47.16670788    
      RIR:      6.946
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                21.62        100.00        4.1107    1   1   1         8
                35.67         21.02        2.5173    2   2   0        12
                44.06          8.31        2.0554    2   2   2         8
                56.32         13.96        1.6334    3   3   1        24
                64.07          6.67        1.4534    4   2   2        24
                75.54          6.29        1.2587    4   4   0        12
                79.67          8.02        1.2035    5   3   1        48
                86.44          2.77        1.1258    6   2   0        24
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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.