K2SO4
      Miyake M, Morikawa H, Iwai S
      Acta Crystallographica B36 (1980) 532-536
      Structure reinvestigation of the high-temperature form of KSO4
      Locality: synthetic
      _cod_database_code 1000049
      _database_code_amcsd 0009703

      CELL PARAMETERS:    5.9470   5.9470   8.3750   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    256.514
      Density (g/cm3):      2.256
      MAX. ABS. INTENSITY / VOLUME**2:      25.15118630    
      RIR:      3.630
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                17.22          7.99        5.1503    1   0   0         6
                20.24         20.55        4.3871    1   0   1        12
                21.22          8.11        4.1875    0   0   2         2
                27.45         66.82        3.2491    1   0   2        12
                30.05        100.00        2.9735    1   1   0         6
                34.84          2.18        2.5751    2   0   0         6
                36.61          4.15        2.4543    1   0   3        12
                37.08          1.34        2.4244    1   1   2        12
                41.15         21.77        2.1935    2   0   2        12
                43.21          4.22        2.0938    0   0   4         2
                48.07          3.22        1.8928    2   0   3        12
                51.79          9.76        1.7652    2   1   2        24
                53.37         11.27        1.7168    3   0   0         6
                53.53         11.62        1.7119    1   1   4        12
                57.74          1.97        1.5968    2   1   3        24
                62.47          8.28        1.4868    2   2   0         6
                69.53          5.70        1.3519    3   1   2        24
                69.81          3.65        1.3472    1   0   6        12
                71.00          4.07        1.3275    3   0   4        12
                75.20          1.55        1.2635    1   1   6        12
                77.57          1.37        1.2307    4   0   2        12
                77.84          2.16        1.2272    2   0   6        12
                78.98          2.84        1.2122    2   2   4        12
                85.63          4.72        1.1343    2   1   6        24
                86.62          1.52        1.1239    4   1   0        12
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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.