Alunite
      Menchetti S, Sabelli C
      Neues Jahrbuch fur Mineralogie, Monatshefte 1976 (1976) 406-417
      Crystal chemistry of the alunite series: crystal structure refinement of alunite
      and synthetic jarosite
      Note: none of the reported bond lengths can be reproduced
      Locality: Montioni, Toscana, Italy
      _database_code_amcsd 0014755

      CELL PARAMETERS:    7.0200   7.0200  17.2230   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    735.044
      Density (g/cm3):      2.807
      MAX. ABS. INTENSITY / VOLUME**2:      16.62187030    
      RIR:      1.928
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                15.43          1.99        5.7410    0   0   3         2
                15.46         17.77        5.7328    1   0   1         6
                17.86         50.50        4.9665    0   1   2         6
                25.38         27.89        3.5100    1   1   0         6
                29.81          3.54        2.9970    0   1   5         6
                29.84        100.00        2.9946    1   1   3        12
                29.85         25.01        2.9935    0   2   1         6
                31.16         10.35        2.8705    0   0   6         2
                36.17          4.34        2.4833    0   2   4         6
                39.51         33.80        2.2807    1   0   7         6
                39.54          3.04        2.2792    2   0   5         6
                40.64          7.08        2.2202    1   2   2        12
                44.70          1.64        2.0272    2   1   4        12
                47.51          5.86        1.9137    0   0   9         2
                47.58         33.56        1.9109    0   3   3         6
                47.58          1.48        1.9109    3   0   3         6
                52.05          1.39        1.7569    2   0   8         6
                52.11         25.11        1.7550    2   2   0         6
                55.54          2.41        1.6547    3   1   2        12
                58.77          1.71        1.5711    1   2   8        12
                58.81          1.11        1.5701    1   3   4        12
                61.20          3.25        1.5144    3   1   5        12
                61.22          1.21        1.5140    4   0   1         6
                61.92         19.27        1.4985    0   2  10         6
                61.98          9.05        1.4973    2   2   6        12
                62.00          2.49        1.4967    0   4   2         6
                65.08          2.85        1.4332    4   0   4         6
                67.29          2.16        1.3913    0   3   9         6
                67.32          4.29        1.3909    1   3   7        12
                67.36          1.12        1.3902    3   2   1        12
                68.03          1.16        1.3781    2   1  10        12
                68.10          3.06        1.3768    2   3   2        12
                71.06          2.44        1.3267    4   1   0        12
                73.10          2.24        1.2945    1   0  13         6
                73.17          2.15        1.2934    2   2   9        12
                73.23          3.07        1.2926    1   4   3        12
                73.23          5.50        1.2926    4   1   3        12
                78.89          7.88        1.2133    3   2   7        12
                79.56          3.22        1.2049    1   3  10        12
                82.33          1.94        1.1713    0   3  12         6
                82.43          1.35        1.1700    3   3   0         6
                84.39          4.68        1.1477    2   1  13        12
                85.14          3.23        1.1396    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.