Alunite
      Zema M, Callegari A M, Tarantino S C, Gasparini E, Ghigna P
      Mineralogical Magazine 76 (2012) 613-623
      Thermal expansion of alunite up to dehydroxylation
      and collapse of the crystal structure
      Note: T = 400 C
      Locality: Hungary
      _database_code_amcsd 0018988

      CELL PARAMETERS:    6.9897   6.9897  17.5740   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    743.564
      Density (g/cm3):      2.734
      MAX. ABS. INTENSITY / VOLUME**2:      14.89004013    
      RIR:      1.774
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                15.12          1.91        5.8580    0   0   3         2
                15.48         15.95        5.7233    1   0   1         6
                17.79         60.49        4.9849    0   1   2         6
                25.49         27.92        3.4948    1   1   0         6
                29.38          5.43        3.0396    0   1   5         6
                29.77        100.00        3.0013    1   1   3        12
                29.96         26.22        2.9827    0   2   1         6
                30.52          8.59        2.9290    0   0   6         2
                36.03          5.04        2.4925    0   2   4         6
                38.83         33.69        2.3190    1   0   7         6
                39.28          2.53        2.2935    2   0   5         6
                40.75          5.41        2.2141    1   2   2        12
                44.66          1.23        2.0293    2   1   4        12
                46.51          5.65        1.9527    0   0   9         2
                47.67         31.91        1.9078    0   3   3         6
                47.67          1.19        1.9078    3   0   3         6
                51.40          1.32        1.7778    2   0   8         6
                52.36         22.19        1.7474    2   2   0         6
                55.74          2.67        1.6490    3   1   2        12
                58.22          1.96        1.5846    1   2   8        12
                60.96         17.84        1.5198    0   2  10         6
                61.18          2.46        1.5149    3   1   5        12
                61.50          1.13        1.5077    4   0   1         6
                61.82          7.68        1.5007    2   2   6        12
                62.25          1.86        1.4914    0   4   2         6
                65.20          2.47        1.4308    4   0   4         6
                66.65          1.47        1.4032    0   3   9         6
                67.06          3.50        1.3956    1   3   7        12
                67.37          1.08        1.3900    0   4   5         6
                68.39          2.85        1.3717    2   3   2        12
                71.41          1.90        1.3209    4   1   0        12
                71.51          1.74        1.3193    1   0  13         6
                72.60          2.05        1.3022    2   2   9        12
                73.49          2.44        1.2886    1   4   3        12
                73.49          4.35        1.2886    4   1   3        12
                78.75          6.09        1.2152    3   2   7        12
                78.85          2.54        1.2140    1   3  10        12
                81.15          1.88        1.1852    0   3  12         6
                82.87          1.00        1.1650    3   3   0         6
                82.96          4.05        1.1639    2   1  13        12
                84.48          2.46        1.1467    4   0  10         6
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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.