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 = 48.1 kbar
      _database_code_amcsd 0000704

      CELL PARAMETERS:    6.5531   6.5531   5.9519   90.000   90.000   90.000
      SPACE GROUP: I4_1/amd  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    255.593
      Density (g/cm3):      4.763
      MAX. ABS. INTENSITY / VOLUME**2:      75.34011784    
      RIR:      5.150
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                20.15         42.70        4.4059    1   0   1         8
                27.22        100.00        3.2766    2   0   0         4
                34.10          7.71        2.6292    2   1   1        16
                35.86         58.33        2.5040    1   1   2         8
                38.87         12.86        2.3169    2   2   0         4
                40.97          6.05        2.2029    2   0   2         8
                44.17         20.11        2.0506    3   0   1         8
                47.91         13.49        1.8989    1   0   3         8
                52.65         14.08        1.7383    3   2   1        16
                53.91         53.46        1.7006    3   1   2        16
                55.97          3.60        1.6429    2   1   3        16
                56.14         14.65        1.6383    4   0   0         4
                60.27          2.75        1.5356    4   1   1        16
                62.41          3.02        1.4880    0   0   4         2
                63.33          2.85        1.4686    3   0   3         8
                63.49          9.67        1.4653    4   2   0         8
                68.43         16.54        1.3709    3   3   2         8
                69.36         10.09        1.3548    2   0   4         8
                74.07          5.01        1.2800    4   3   1        16
                76.01          8.72        1.2520    2   2   4         8
                76.85          2.51        1.2404    4   1   3        16
                81.60          9.53        1.1799    5   1   2        16
                83.44          2.90        1.1584    4   4   0         4
                88.70          2.56        1.1029    2   1   5        16
                88.84          5.03        1.1015    4   0   4         8
                89.65          1.93        1.0936    5   0   3         8
                89.80          4.47        1.0922    6   0   0         4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.