Hydroniumjarosite
      Plasil J, Skoda R, Fejfarova K, Cejka J, Kasatkin A V, Dusek M, Talla D,
      Lapcak L, Machovic V, Dini M
      Mineralogical Magazine 78 (2014) 535-547
      Hydroniumjarosite, (H3O)+Fe3(SO4)2(OH)6, from Cerros Pintados, Chile:
      Single-crystal X-ray diffraction and vibrational spectroscopic study
      Locality: Cerros Pintados, Iquique Province, Chile
      _database_code_amcsd 0020230

      CELL PARAMETERS:    7.3408   7.3408  17.0451   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    795.457
      Density (g/cm3):      3.041
      MAX. ABS. INTENSITY / VOLUME**2:      18.07808712    
      RIR:      1.936
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.87         18.89        5.9565    1   0   1         6
                15.60         39.24        5.6817    0   0   3         2
                17.40         87.05        5.0958    0   1   2         6
                24.25          5.68        3.6704    1   1   0         6
                25.16          7.67        3.5397    1   0   4         6
                28.57         89.72        3.1248    0   2   1         6
                28.96        100.00        3.0830    1   1   3        12
                29.74          3.04        3.0043    0   1   5         6
                30.00          7.54        2.9783    2   0   2         6
                31.49         16.31        2.8408    0   0   6         2
                35.22         23.80        2.5479    0   2   4         6
                38.73          2.64        2.3248    2   0   5         6
                39.64         31.09        2.2739    1   0   7         6
                40.14          1.03        2.2465    1   1   6        12
                44.87          1.03        2.0202    0   1   8         6
                45.69         30.11        1.9855    0   3   3         6
                45.69          1.25        1.9855    3   0   3         6
                47.01         13.45        1.9330    0   2   7         6
                48.04          7.02        1.8939    0   0   9         2
                49.68         35.19        1.8352    2   2   0         6
                51.65          5.49        1.7698    2   0   8         6
                52.39          8.63        1.7464    2   2   3        12
                53.04          5.80        1.7266    3   1   2        12
                53.58          1.83        1.7103    2   1   7        12
                54.52          1.06        1.6831    1   1   9        12
                56.48          5.45        1.6292    1   3   4        12
                57.84          6.77        1.5942    1   2   8        12
                58.31          5.62        1.5825    4   0   1         6
                58.98          3.43        1.5661    3   1   5        12
                59.13          5.82        1.5624    0   4   2         6
                60.01         16.01        1.5415    2   2   6        12
                61.76         20.63        1.5022    0   2  10         6
                62.36          6.23        1.4891    4   0   4         6
                64.08          1.31        1.4532    3   2   1        12
                64.71          4.02        1.4405    0   4   5         6
                64.86          4.16        1.4376    2   3   2        12
                65.34          2.72        1.4281    1   3   7        12
                66.18          2.46        1.4121    0   3   9         6
                67.21          4.74        1.3929    2   0  11         6
                67.93          1.51        1.3799    3   2   4        12
                69.78          3.32        1.3477    1   4   3        12
                69.78          4.55        1.3477    4   1   3        12
                70.79          3.46        1.3309    4   0   7         6
                71.60          4.74        1.3179    2   2   9        12
                73.79          1.33        1.2841    1   0  13         6
                76.07          5.72        1.2512    3   2   7        12
                80.07          1.46        1.1984    2   4   1        12
                83.09          3.31        1.1624    4   0  10         6
                83.62          1.33        1.1563    2   4   4        12
                84.10          3.45        1.1510    2   1  13        12
                85.74          1.95        1.1331    4   2   5        12
                86.68          1.87        1.1233    2   2  12        12
                88.03          2.69        1.1095    0   4  11         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.