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 = 450 C
      Locality: Hungary
      _database_code_amcsd 0018989

      CELL PARAMETERS:    6.9916   6.9916  17.6210   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    745.958
      Density (g/cm3):      2.729
      MAX. ABS. INTENSITY / VOLUME**2:      14.77903589    
      RIR:      1.763
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                15.08          2.10        5.8737    0   0   3         2
                15.47         16.29        5.7263    1   0   1         6
                17.77         61.60        4.9901    0   1   2         6
                25.48         27.67        3.4958    1   1   0         6
                29.32          5.42        3.0458    0   1   5         6
                29.74        100.00        3.0040    1   1   3        12
                29.95         26.47        2.9837    0   2   1         6
                30.44          8.58        2.9368    0   0   6         2
                36.00          5.19        2.4951    0   2   4         6
                38.74         33.62        2.3244    1   0   7         6
                39.23          2.40        2.2965    2   0   5         6
                40.73          5.22        2.2150    1   2   2        12
                44.62          1.20        2.0308    2   1   4        12
                46.38          5.76        1.9579    0   0   9         2
                47.64         31.66        1.9088    0   3   3         6
                47.64          1.16        1.9088    3   0   3         6
                51.29          1.32        1.7811    2   0   8         6
                52.34         21.93        1.7479    2   2   0         6
                55.72          2.70        1.6496    3   1   2        12
                58.13          1.97        1.5870    1   2   8        12
                60.82         17.67        1.5229    0   2  10         6
                61.13          2.40        1.5160    3   1   5        12
                61.48          1.13        1.5082    4   0   1         6
                61.76          7.60        1.5020    2   2   6        12
                62.23          1.83        1.4919    0   4   2         6
                65.17          2.44        1.4316    4   0   4         6
                66.54          1.41        1.4053    0   3   9         6
                66.99          3.46        1.3970    1   3   7        12
                67.32          1.12        1.3909    0   4   5         6
                68.37          2.87        1.3721    2   3   2        12
                71.30          1.68        1.3227    1   0  13         6
                71.39          1.81        1.3213    4   1   0        12
                72.49          2.10        1.3039    2   2   9        12
                73.46          2.36        1.2891    1   4   3        12
                73.46          4.22        1.2891    4   1   3        12
                78.67          5.91        1.2162    3   2   7        12
                78.71          2.43        1.2157    1   3  10        12
                80.97          1.90        1.1874    0   3  12         6
                82.76          3.93        1.1663    2   1  13        12
                84.35          2.39        1.1482    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.