Zircon
      Finch R J, Hanchar J M, Hoskin P W O, Burns P C
      American Mineralogist 86 (2001) 681-689
      Rare-earth elements in synthetic zircon: Part 2. A single-crystal
      X-ray study of xenotime substitution
      Sample: Gd+P (30)
      _database_code_amcsd 0002647

      CELL PARAMETERS:    6.6213   6.6213   5.9879   90.000   90.000   90.000
      SPACE GROUP: I4_1/amd  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    262.519
      Density (g/cm3):      4.637
      MAX. ABS. INTENSITY / VOLUME**2:      71.85020359    
      RIR:      5.045
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.99         41.94        4.4412    1   0   1         8
                26.93        100.00        3.3107    2   0   0         4
                33.77          6.87        2.6543    2   1   1        16
                35.59         56.23        2.5223    1   1   2         8
                38.45         12.07        2.3410    2   2   0         4
                40.63          6.30        2.2206    2   0   2         8
                43.71         19.59        2.0709    3   0   1         8
                47.58         12.79        1.9110    1   0   3         8
                52.09         13.14        1.7557    3   2   1        16
                53.40         50.26        1.7159    3   1   2        16
                55.51         13.94        1.6553    4   0   0         4
                55.52          2.93        1.6551    2   1   3        16
                59.61          2.14        1.5511    4   1   1        16
                61.99          2.65        1.4970    0   0   4         2
                62.76          8.49        1.4806    4   2   0         8
                62.77          2.43        1.4804    3   0   3         8
                67.70         15.23        1.3839    3   3   2         8
                68.83          8.81        1.3640    2   0   4         8
                73.20          4.31        1.2930    4   3   1        16
                75.36          7.57        1.2612    2   2   4         8
                76.07          1.93        1.2512    4   1   3        16
                80.65          7.69        1.1913    5   1   2        16
                82.39          2.40        1.1705    4   4   0         4
                87.95          4.03        1.1103    4   0   4         8
                87.96          1.95        1.1102    2   1   5        16
                88.63          3.90        1.1036    6   0   0         4
                88.63          1.58        1.1035    5   0   3         8
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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.