Alunite
      Schukow H, Breitinger D K, Zeiske T, Kubanek F, Mohr J, Schwab R G
      Zeitschrift fur Anorganische und Allgemeine Chemie 625 (1999) 1047-1050
      Localization of hydrogen and content of oxonium cations in alunite via neutron
      diffraction
      Locality: synthetic
      Sample: T = 2 K
      _database_code_amcsd 0015817

      CELL PARAMETERS:    6.9430   6.9430  17.2270   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    719.175
      Density (g/cm3):      2.891
      MAX. ABS. INTENSITY / VOLUME**2:      16.10389993    
      RIR:      1.814
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                15.43          3.32        5.7423    0   0   3         2
                15.61         28.17        5.6770    1   0   1         6
                17.99         60.81        4.9304    0   1   2         6
                25.66         30.70        3.4715    1   1   0         6
                29.89          6.21        2.9894    0   1   5         6
                30.08        100.00        2.9708    1   1   3        12
                30.18         29.02        2.9616    0   2   1         6
                31.15          9.89        2.8712    0   0   6         2
                36.45          3.93        2.4652    0   2   4         6
                39.57         35.39        2.2776    1   0   7         6
                39.79          2.31        2.2653    2   0   5         6
                41.08          6.32        2.1974    1   2   2        12
                45.11          2.24        2.0100    2   1   4        12
                47.50          5.60        1.9141    0   0   9         2
                48.08         34.73        1.8923    0   3   3         6
                48.08          1.35        1.8923    3   0   3         6
                52.25          1.32        1.7506    2   0   8         6
                52.74         22.44        1.7357    2   2   0         6
                56.18          2.76        1.6373    3   1   2        12
                59.10          2.27        1.5631    1   2   8        12
                59.44          1.20        1.5551    1   3   4        12
                61.81          3.46        1.5011    3   1   5        12
                61.97          1.11        1.4975    4   0   1         6
                62.10         19.22        1.4947    0   2  10         6
                62.53          9.51        1.4854    2   2   6        12
                62.75          2.69        1.4808    0   4   2         6
                65.80          2.62        1.4192    4   0   4         6
                67.69          2.36        1.3843    0   3   9         6
                67.89          3.94        1.3805    1   3   7        12
                68.05          1.24        1.3778    0   4   5         6
                68.20          1.08        1.3750    3   2   1        12
                68.33          1.08        1.3729    2   1  10        12
                68.94          3.10        1.3621    2   3   2        12
                71.97          2.77        1.3121    4   1   0        12
                73.13          2.24        1.2941    1   0  13         6
                73.68          2.10        1.2858    2   2   9        12
                74.13          5.26        1.2791    4   1   3        12
                74.13          3.10        1.2791    1   4   3        12
                79.68          7.72        1.2033    3   2   7        12
                80.09          3.58        1.1982    1   3  10        12
                82.68          1.92        1.1671    0   3  12         6
                83.55          1.42        1.1572    3   3   0         6
                84.67          5.11        1.1448    2   1  13        12
                85.79          3.07        1.1326    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.