Spodumene-II
      Li C T, Peacor D R
      Zeitschrift fur Kristallographie 126 (1968) 46-65
      The crystal structure LiAlSi2O6-II ("beta spodumene")
      Locality: synthetic
      Note, y coordinate of Si1 altered according to Clarke and Spink (1969)
      _database_code_amcsd 0010656

      CELL PARAMETERS:    7.5410   7.5410   9.1560   90.000   90.000   90.000
      SPACE GROUP: P4_32_12  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    520.671
      Density (g/cm3):      2.374
      MAX. ABS. INTENSITY / VOLUME**2:      22.52316209    
      RIR:      3.090
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                15.22          2.44        5.8209    1   0   1         8
                19.26          9.21        4.6078    1   1   1         8
                22.72         31.13        3.9133    1   0   2         8
                25.55        100.00        3.4864    2   0   1         8
                25.65         20.06        3.4735    1   1   2         8
                28.20         10.94        3.1646    2   1   1         8
                33.84          1.86        2.6488    1   1   3         8
                39.10          4.39        2.3039    2   2   2         8
                39.36          1.59        2.2890    0   0   4         2
                39.84          3.63        2.2629    2   1   3         8
                41.22          1.43        2.1903    1   0   4         8
                42.75          2.86        2.1149    3   1   2         8
                43.00          1.08        2.1034    1   1   4         8
                46.82          5.98        1.9403    3   0   3         8
                47.81          2.74        1.9024    3   2   2         8
                48.04          1.57        1.8939    2   1   4         8
                48.27          9.62        1.8852    4   0   0         4
                48.44          8.11        1.8791    3   1   3         8
                53.99          1.74        1.6984    4   1   2         8
                55.40          3.03        1.6583    4   2   1         8
                55.66          1.98        1.6514    3   1   4         8
                55.81          4.11        1.6472    2   0   5         8
                59.91          3.03        1.5440    3   2   4         8
                60.25          1.34        1.5359    3   3   3         8
                62.78          1.66        1.4801    3   0   5         8
                63.74          1.54        1.4600    5   1   1         8
                63.98          1.54        1.4552    4   0   4         8
                64.12          1.29        1.4524    3   1   5         8
                65.12          4.01        1.4325    5   0   2         8
                66.43          3.50        1.4073    5   1   2         8
                66.62          1.73        1.4039    3   3   4         8
                67.69          2.46        1.3842    5   2   1         8
                68.05          1.12        1.3777    3   2   5         8
                69.52          1.92        1.3521    4   3   3         8
                70.80          1.18        1.3309    5   1   3         8
                71.19          4.15        1.3244    2   2   6         8
                74.56          1.95        1.2728    5   2   3         8
                76.55          1.64        1.2446    5   3   2         8
                76.72          1.03        1.2422    5   1   4         8
                76.85          2.96        1.2404    4   2   5         8
                77.19          1.50        1.2358    2   0   7         8
                78.42          1.11        1.2195    2   1   7         8
                80.39          1.20        1.1945    5   2   4         8
                80.69          1.64        1.1908    5   3   3         8
                85.05          1.74        1.1406    5   4   2         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.