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 = 17.4 kbar
      _database_code_amcsd 0000699

      CELL PARAMETERS:    6.5849   6.5849   5.9693   90.000   90.000   90.000
      SPACE GROUP: I4_1/amd  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    258.834
      Density (g/cm3):      4.703
      MAX. ABS. INTENSITY / VOLUME**2:      74.80022678    
      RIR:      5.178
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                20.08         41.76        4.4226    1   0   1         8
                27.08        100.00        3.2924    2   0   0         4
                33.94          7.74        2.6410    2   1   1        16
                35.73         58.14        2.5127    1   1   2         8
                38.68         13.05        2.3281    2   2   0         4
                40.81          6.02        2.2113    2   0   2         8
                43.95         20.09        2.0601    3   0   1         8
                47.75         13.41        1.9047    1   0   3         8
                52.39         14.25        1.7464    3   2   1        16
                53.67         53.49        1.7078    3   1   2        16
                55.76          3.73        1.6487    2   1   3        16
                55.85         14.61        1.6462    4   0   0         4
                59.96          2.75        1.5428    4   1   1        16
                62.21          2.98        1.4923    0   0   4         2
                63.06          2.81        1.4742    3   0   3         8
                63.14          9.74        1.4724    4   2   0         8
                68.09         16.56        1.3770    3   3   2         8
                69.11         10.10        1.3592    2   0   4         8
                73.66          5.04        1.2861    4   3   1        16
                75.70          8.82        1.2564    2   2   4         8
                76.48          2.52        1.2455    4   1   3        16
                81.15          9.74        1.1852    5   1   2        16
                82.95          2.90        1.1641    4   4   0         4
                88.34          2.57        1.1064    2   1   5        16
                88.41          5.06        1.1056    4   0   4         8
                89.17          1.92        1.0982    5   0   3         8
                89.25          4.50        1.0975    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.