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 = 253 K
      Locality: Jaroso Ravine, Sierra Almagrera, Andalusia, Almeria, Spain
      _database_code_amcsd 0020095

      CELL PARAMETERS:    7.2931   7.2931  17.1456   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    789.783
      Density (g/cm3):      3.120
      MAX. ABS. INTENSITY / VOLUME**2:      22.37419087    
      RIR:      2.335
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.95         28.73        5.9267    1   0   1         6
                15.50         18.60        5.7152    0   0   3         2
                17.44         51.87        5.0850    0   1   2         6
                24.41         10.86        3.6465    1   1   0         6
                25.11          2.39        3.5468    1   0   4         6
                28.74         59.94        3.1058    0   2   1         6
                29.05        100.00        3.0741    1   1   3        12
                30.16         11.81        2.9633    2   0   2         6
                31.30         18.68        2.8576    0   0   6         2
                35.30         20.97        2.5425    0   2   4         6
                38.06          2.42        2.3644    2   1   1        12
                39.17          1.94        2.2997    1   2   2        12
                39.46         31.36        2.2837    1   0   7         6
                45.94         29.13        1.9756    0   3   3         6
                45.94          1.98        1.9756    3   0   3         6
                46.34          1.04        1.9592    1   2   5        12
                46.95          8.49        1.9355    0   2   7         6
                47.74          5.10        1.9051    0   0   9         2
                50.03         31.90        1.8233    2   2   0         6
                51.53          5.88        1.7734    2   0   8         6
                52.70          4.34        1.7370    2   2   3        12
                53.38          3.33        1.7163    3   1   2        12
                53.61          2.55        1.7096    2   1   7        12
                54.33          2.33        1.6885    1   1   9        12
                56.77          3.01        1.6216    1   3   4        12
                57.82          4.00        1.5948    1   2   8        12
                58.72          3.72        1.5723    4   0   1         6
                59.23          4.49        1.5600    3   1   5        12
                59.53          6.44        1.5529    0   4   2         6
                60.21         16.99        1.5371    2   2   6        12
                61.54         20.30        1.5068    0   2  10         6
                62.71          6.16        1.4817    4   0   4         6
                64.54          1.89        1.4438    3   2   1        12
                65.03          2.66        1.4343    0   4   5         6
                65.31          2.58        1.4287    2   3   2        12
                65.51          3.12        1.4249    1   3   7        12
                66.15          3.29        1.4126    0   3   9         6
                66.95          3.11        1.3977    2   0  11         6
                70.25          5.30        1.3399    4   1   3        12
                70.25          3.80        1.3399    1   4   3        12
                71.03          2.27        1.3271    4   0   7         6
                71.64          3.20        1.3172    2   2   9        12
                73.33          1.78        1.2910    1   0  13         6
                76.36          6.44        1.2471    3   2   7        12
                77.98          1.34        1.2253    1   3  10        12
                80.70          1.00        1.1907    2   4   1        12
                83.17          3.56        1.1615    4   0  10         6
                83.79          3.98        1.1544    2   1  13        12
                84.20          1.39        1.1499    2   4   4        12
                86.29          1.49        1.1273    4   2   5        12
                86.55          2.47        1.1246    2   2  12        12
                88.05          2.05        1.1093    0   4  11         6
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.