Zircon
      Hazen R M, Finger L W
      American Mineralogist 64 (1979) 196-201
      Crystal structure and compressibility of zircon at high pressure
      crystal No. 2, P = 42.0 kbar
      _database_code_amcsd 0000703

      CELL PARAMETERS:    6.5592   6.5592   5.9553   90.000   90.000   90.000
      SPACE GROUP: I4_1/amd  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    256.215
      Density (g/cm3):      4.751
      MAX. ABS. INTENSITY / VOLUME**2:      74.89758078    
      RIR:      5.133
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                20.14         42.73        4.4091    1   0   1         8
                27.19        100.00        3.2796    2   0   0         4
                34.07          7.81        2.6315    2   1   1        16
                35.84         58.59        2.5057    1   1   2         8
                38.83         12.86        2.3190    2   2   0         4
                40.94          6.06        2.2046    2   0   2         8
                44.12         19.99        2.0524    3   0   1         8
                47.88         13.40        1.9000    1   0   3         8
                52.60         14.04        1.7398    3   2   1        16
                53.87         53.21        1.7020    3   1   2        16
                55.93          3.63        1.6440    2   1   3        16
                56.09         14.62        1.6398    4   0   0         4
                60.21          2.79        1.5369    4   1   1        16
                62.37          2.98        1.4888    0   0   4         2
                63.27          2.82        1.4697    3   0   3         8
                63.42          9.69        1.4667    4   2   0         8
                68.37         16.32        1.3721    3   3   2         8
                69.31         10.01        1.3557    2   0   4         8
                73.99          4.97        1.2811    4   3   1        16
                75.95          8.68        1.2529    2   2   4         8
                76.78          2.52        1.2414    4   1   3        16
                81.51          9.50        1.1809    5   1   2        16
                83.34          2.89        1.1595    4   4   0         4
                88.63          2.54        1.1036    2   1   5        16
                88.76          4.96        1.1023    4   0   4         8
                89.56          1.90        1.0944    5   0   3         8
                89.69          4.37        1.0932    6   0   0         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.