Zircon
      Hazen R M, Finger L W
      American Mineralogist 64 (1979) 196-201
      Crystal structure and compressibility of zircon at high pressure
      crystal No. 1, P = 28.9 kbar
      _database_code_amcsd 0000701

      CELL PARAMETERS:    6.5737   6.5737   5.9638   90.000   90.000   90.000
      SPACE GROUP: I4_1/amd  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    257.717
      Density (g/cm3):      4.724
      MAX. ABS. INTENSITY / VOLUME**2:      74.72072683    
      RIR:      5.151
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                20.10         42.98        4.4170    1   0   1         8
                27.13        100.00        3.2868    2   0   0         4
                34.00          7.71        2.6369    2   1   1        16
                35.78         58.39        2.5099    1   1   2         8
                38.74         12.73        2.3242    2   2   0         4
                40.86          6.16        2.2085    2   0   2         8
                44.03         20.40        2.0568    3   0   1         8
                47.80         13.68        1.9028    1   0   3         8
                52.48         14.30        1.7436    3   2   1        16
                53.75         53.98        1.7053    3   1   2        16
                55.83          3.59        1.6468    2   1   3        16
                55.95         14.93        1.6434    4   0   0         4
                60.07          2.81        1.5403    4   1   1        16
                62.27          3.05        1.4909    0   0   4         2
                63.15          2.93        1.4723    3   0   3         8
                63.26          9.76        1.4699    4   2   0         8
                68.21         16.85        1.3749    3   3   2         8
                69.19         10.19        1.3578    2   0   4         8
                73.80          5.20        1.2839    4   3   1        16
                75.80          8.82        1.2549    2   2   4         8
                76.61          2.60        1.2438    4   1   3        16
                81.31          9.57        1.1833    5   1   2        16
                83.12          2.97        1.1621    4   4   0         4
                88.45          2.66        1.1053    2   1   5        16
                88.56          5.10        1.1042    4   0   4         8
                89.34          2.02        1.0966    5   0   3         8
                89.44          4.58        1.0956    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.