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 = 297 K
      Locality: Jaroso Ravine, Sierra Almagrera, Andalusia, Almeria, Spain
      _database_code_amcsd 0020094

      CELL PARAMETERS:    7.2913   7.2913  17.1744   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    790.719
      Density (g/cm3):      3.116
      MAX. ABS. INTENSITY / VOLUME**2:      22.28130231    
      RIR:      2.328
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.95         28.42        5.9266    1   0   1         6
                15.48         18.65        5.7248    0   0   3         2
                17.43         52.26        5.0871    0   1   2         6
                24.42         10.81        3.6456    1   1   0         6
                25.08          2.29        3.5506    1   0   4         6
                28.75         59.71        3.1052    0   2   1         6
                29.04        100.00        3.0751    1   1   3        12
                30.16         11.69        2.9633    2   0   2         6
                31.25         18.62        2.8624    0   0   6         2
                35.29         20.97        2.5436    0   2   4         6
                38.07          2.43        2.3639    2   1   1        12
                39.18          1.86        2.2995    1   2   2        12
                39.40         31.22        2.2869    1   0   7         6
                45.94         28.76        1.9755    0   3   3         6
                45.94          1.96        1.9755    3   0   3         6
                46.90          8.39        1.9373    0   2   7         6
                47.66          5.16        1.9083    0   0   9         2
                50.04         31.42        1.8228    2   2   0         6
                51.48          5.80        1.7753    2   0   8         6
                52.70          4.34        1.7369    2   2   3        12
                53.39          3.29        1.7160    3   1   2        12
                53.57          2.49        1.7108    2   1   7        12
                54.26          2.26        1.6907    1   1   9        12
                56.77          2.98        1.6216    1   3   4        12
                57.76          3.96        1.5961    1   2   8        12
                58.74          3.61        1.5720    4   0   1         6
                59.22          4.34        1.5602    3   1   5        12
                59.54          6.27        1.5526    0   4   2         6
                60.19         16.77        1.5375    2   2   6        12
                61.46         20.03        1.5087    0   2  10         6
                62.71          6.03        1.4816    4   0   4         6
                64.56          1.86        1.4435    3   2   1        12
                65.02          2.64        1.4344    0   4   5         6
                65.32          2.57        1.4285    2   3   2        12
                65.48          3.08        1.4254    1   3   7        12
                66.09          3.20        1.4137    0   3   9         6
                66.85          3.02        1.3995    2   0  11         6
                70.26          3.70        1.3397    1   4   3        12
                70.26          5.16        1.3397    4   1   3        12
                71.00          2.24        1.3276    4   0   7         6
                71.59          3.17        1.3181    2   2   9        12
                73.19          1.74        1.2931    1   0  13         6
                76.34          6.25        1.2474    3   2   7        12
                77.91          1.29        1.2262    1   3  10        12
                83.11          3.45        1.1622    4   0  10         6
                83.67          3.88        1.1558    2   1  13        12
                84.21          1.35        1.1497    2   4   4        12
                86.30          1.45        1.1272    4   2   5        12
                86.45          2.34        1.1257    2   2  12        12
                87.97          1.98        1.1101    0   4  11         6
                89.92          1.10        1.0911    1   2  14        12
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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.