Jarosite
      Mills S J, Nestola F, Kahlenberg V, Christy A G, Hejny C, Redhammer G J
      American Mineralogist 98 (2013) 1966-1971
      Looking for jarosite on Mars: The low-temperature crystal structure of jarosite
      Note: T = 133 K
      Locality: Jaroso Ravine, Sierra Almagrera, Andalusia, Almeria, Spain
      _database_code_amcsd 0020098

      CELL PARAMETERS:    7.2907   7.2907  17.0900   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    786.704
      Density (g/cm3):      3.132
      MAX. ABS. INTENSITY / VOLUME**2:      22.67354278    
      RIR:      2.357
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.96         28.05        5.9227    1   0   1         6
                15.56         18.19        5.6967    0   0   3         2
                17.46         50.17        5.0781    0   1   2         6
                24.42         10.84        3.6453    1   1   0         6
                25.17          2.40        3.5385    1   0   4         6
                28.76         60.14        3.1044    0   2   1         6
                29.08        100.00        3.0705    1   1   3        12
                30.18         11.93        2.9613    2   0   2         6
                31.41         18.73        2.8483    0   0   6         2
                35.35         21.00        2.5390    0   2   4         6
                38.07          2.54        2.3635    2   1   1        12
                39.19          2.11        2.2985    1   2   2        12
                39.58         31.81        2.2771    1   0   7         6
                45.97         29.56        1.9742    0   3   3         6
                45.97          2.00        1.9742    3   0   3         6
                46.41          1.16        1.9567    1   2   5        12
                47.05          8.67        1.9313    0   2   7         6
                47.91          4.96        1.8989    0   0   9         2
                50.04         32.80        1.8227    2   2   0         6
                51.66          5.99        1.7692    2   0   8         6
                52.73          4.37        1.7360    2   2   3        12
                53.41          3.29        1.7155    3   1   2        12
                53.71          2.73        1.7066    2   1   7        12
                54.49          2.53        1.6841    1   1   9        12
                56.82          3.05        1.6203    1   3   4        12
                57.94          4.09        1.5917    1   2   8        12
                58.74          3.74        1.5718    4   0   1         6
                59.29          4.69        1.5585    3   1   5        12
                59.56          6.71        1.5522    0   4   2         6
                60.28         17.54        1.5353    2   2   6        12
                61.72         20.89        1.5029    0   2  10         6
                62.75          6.40        1.4807    4   0   4         6
                64.57          1.98        1.4433    3   2   1        12
                65.09          2.61        1.4330    0   4   5         6
                65.34          2.59        1.4281    2   3   2        12
                65.61          3.25        1.4230    1   3   7        12
                66.30          3.56        1.4099    0   3   9         6
                67.15          3.20        1.3940    2   0  11         6
                70.29          4.00        1.3392    1   4   3        12
                70.29          5.63        1.3392    4   1   3        12
                71.12          2.32        1.3256    4   0   7         6
                71.79          3.13        1.3149    2   2   9        12
                73.60          1.84        1.2870    1   0  13         6
                76.46          6.93        1.2458    3   2   7        12
                78.15          1.44        1.2231    1   3  10        12
                80.73          1.03        1.1903    2   4   1        12
                83.34          3.77        1.1596    4   0  10         6
                84.06          4.16        1.1515    2   1  13        12
                84.26          1.49        1.1492    2   4   4        12
                86.36          1.54        1.1265    4   2   5        12
                86.78          2.73        1.1222    2   2  12        12
                87.47          1.14        1.1152    4   1   9        12
                88.25          2.18        1.1073    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.