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 = 37.1 kbar
      _database_code_amcsd 0000702

      CELL PARAMETERS:    6.5650   6.5650   5.9583   90.000   90.000   90.000
      SPACE GROUP: I4_1/amd  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    256.798
      Density (g/cm3):      4.741
      MAX. ABS. INTENSITY / VOLUME**2:      74.88924089    
      RIR:      5.144
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                20.13         42.54        4.4121    1   0   1         8
                27.17        100.00        3.2825    2   0   0         4
                34.04          7.73        2.6336    2   1   1        16
                35.81         58.53        2.5072    1   1   2         8
                38.80         12.80        2.3211    2   2   0         4
                40.91          6.15        2.2060    2   0   2         8
                44.09         20.11        2.0542    3   0   1         8
                47.85         13.47        1.9010    1   0   3         8
                52.56         14.12        1.7413    3   2   1        16
                53.82         53.49        1.7033    3   1   2        16
                55.89          3.60        1.6451    2   1   3        16
                56.03         14.74        1.6413    4   0   0         4
                60.15          2.75        1.5383    4   1   1        16
                62.34          2.98        1.4896    0   0   4         2
                63.23          2.82        1.4707    3   0   3         8
                63.36          9.70        1.4680    4   2   0         8
                68.31         16.53        1.3732    3   3   2         8
                69.27         10.07        1.3564    2   0   4         8
                73.92          5.03        1.2822    4   3   1        16
                75.90          8.77        1.2536    2   2   4         8
                76.71          2.52        1.2423    4   1   3        16
                81.43          9.54        1.1819    5   1   2        16
                83.25          2.92        1.1605    4   4   0         4
                88.56          2.57        1.1042    2   1   5        16
                88.68          5.00        1.1030    4   0   4         8
                89.47          1.94        1.0953    5   0   3         8
                89.59          4.47        1.0942    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.