Alum-(Na)
      Cromer D T, Kay M I, Larson A C
      Acta Crystallographica 22 (1967) 182-187
      Refinement of the alum structures. II. X-ray and neutron diffraction of
      NaAl(SO4)2*12H2O, gamma alum
      Locality: synthetic
      _database_code_amcsd 0009307

      CELL PARAMETERS:   12.2130  12.2130  12.2130   90.000   90.000   90.000
      SPACE GROUP: Pa3       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1821.659
      Density (g/cm3):      1.671
      MAX. ABS. INTENSITY / VOLUME**2:      13.79002666    
      RIR:      2.688
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                12.55          6.72        7.0512    1   1   1         8
                14.51          1.98        6.1065    2   0   0         6
                16.23          3.21        5.4618    2   1   0        12
                17.79          2.88        4.9859    2   1   1        24
                20.57        100.00        4.3179    2   2   0        12
                21.83          1.00        4.0710    2   2   1        24
                24.17          2.41        3.6824    3   1   1        24
                25.26         12.27        3.5256    2   2   2         8
                26.31          3.46        3.3873    3   0   2        12
                27.32          4.65        3.2641    3   1   2        24
                29.25          5.85        3.0533    4   0   0         6
                30.17         30.12        2.9621    4   1   0        12
                30.17          4.45        2.9621    3   2   2        24
                32.79          1.69        2.7309    4   2   0        12
                33.63          1.77        2.6651    4   2   1        24
                36.03          7.97        2.4930    4   2   2        24
                37.55          1.88        2.3952    4   3   1        24
                37.55          3.32        2.3952    4   1   3        24
                39.74          2.61        2.2679    4   3   2        24
                39.74          1.32        2.2679    5   0   2        12
                41.84          2.80        2.1590    4   4   0        12
                42.52          4.83        2.1260    5   2   2        24
                43.19          1.66        2.0945    4   3   3        24
                43.86          2.50        2.0644    5   1   3        24
                45.16          1.02        2.0078    6   1   0        12
                45.80          1.08        1.9812    6   1   1        24
                45.80          3.79        1.9812    5   2   3        24
                47.06          4.03        1.9310    6   0   2        12
                47.06          1.94        1.9310    6   2   0        12
                47.68          5.42        1.9074    6   1   2        24
                47.68          1.22        1.9074    4   4   3        24
                49.51          1.70        1.8412    6   2   2        24
                50.70          1.81        1.8007    6   1   3        24
                56.38          3.49        1.6320    6   4   2        24
                56.38          3.64        1.6320    6   2   4        24
                64.77          2.16        1.4393    8   2   2        24
                68.75          1.00        1.3655    8   4   0        12
                76.41          1.10        1.2465    8   4   4        24
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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.