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 = 25 C
      Locality: Hungary
      _database_code_amcsd 0018984

      CELL PARAMETERS:    6.9749   6.9749  17.3150   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    729.506
      Density (g/cm3):      2.806
      MAX. ABS. INTENSITY / VOLUME**2:      16.07276259    
      RIR:      1.865
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                15.35          1.77        5.7717    0   0   3         2
                15.54         15.59        5.7034    1   0   1         6
                17.91         52.79        4.9538    0   1   2         6
                25.54         28.05        3.4874    1   1   0         6
                29.74          4.75        3.0043    0   1   5         6
                29.94        100.00        2.9849    1   1   3        12
                30.03         26.67        2.9753    0   2   1         6
                30.99          9.21        2.8858    0   0   6         2
                36.27          4.81        2.4769    0   2   4         6
                39.36         35.14        2.2891    1   0   7         6
                39.59          2.93        2.2762    2   0   5         6
                40.88          6.41        2.2076    1   2   2        12
                44.88          1.32        2.0194    2   1   4        12
                47.24          5.49        1.9239    0   0   9         2
                47.85          1.29        1.9011    3   0   3         6
                47.85         33.68        1.9011    0   3   3         6
                51.98          1.43        1.7593    2   0   8         6
                52.48         24.49        1.7437    2   2   0         6
                55.90          2.64        1.6448    3   1   2        12
                58.79          2.17        1.5707    1   2   8        12
                59.13          1.10        1.5624    1   3   4        12
                61.49          3.07        1.5081    3   1   5        12
                61.65          1.23        1.5044    4   0   1         6
                61.76         20.09        1.5021    0   2  10         6
                62.20          8.71        1.4924    2   2   6        12
                62.42          2.33        1.4876    0   4   2         6
                65.46          2.77        1.4258    4   0   4         6
                67.31          1.98        1.3910    0   3   9         6
                67.53          3.98        1.3871    1   3   7        12
                67.69          1.02        1.3842    0   4   5         6
                67.85          1.04        1.3814    3   2   1        12
                68.58          3.03        1.3684    2   3   2        12
                71.59          2.40        1.3181    4   1   0        12
                72.70          2.12        1.3007    1   0  13         6
                73.27          2.07        1.2920    2   2   9        12
                73.73          2.97        1.2850    1   4   3        12
                73.73          5.36        1.2850    4   1   3        12
                79.24          7.71        1.2090    3   2   7        12
                79.63          3.36        1.2040    1   3  10        12
                82.19          1.84        1.1728    0   3  12         6
                83.08          1.33        1.1625    3   3   0         6
                84.15          5.07        1.1505    2   1  13        12
                85.28          3.10        1.1381    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.