Hydronium jarosite
      Majzlan J, Stevens R, Boerio-Goates J, Woodfield B F, Navrotsky A,
      Burns P C, Crawford M K, Amos T G
      Physics and Chemistry of Minerals 31 (2004) 518-531
      Thermodynamic properties, low-temperature heat-capacity anomalies,
      and single-crystal X-ray refinement of hydronium jarosite, (H3O)Fe3(SO4)2(OH)6
      Note: Rietveld refinement of synchrotron X-ray diffraction pattern
      Locality: synthetic
      _database_code_amcsd 0008876

      CELL PARAMETERS:    7.3499   7.3499  17.0104   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    795.807
      Density (g/cm3):      2.952
      MAX. ABS. INTENSITY / VOLUME**2:      19.83040964    
      RIR:      2.187
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.86         17.81        5.9615    1   0   1         6
                15.63         35.09        5.6701    0   0   3         2
                17.40        100.00        5.0961    0   1   2         6
                24.22          5.62        3.6749    1   1   0         6
                25.19          7.39        3.5360    1   0   4         6
                28.53         90.32        3.1283    0   2   1         6
                28.95         83.43        3.0839    1   1   3        12
                29.78          2.13        3.0004    0   1   5         6
                29.98         11.90        2.9807    2   0   2         6
                31.56         16.37        2.8351    0   0   6         2
                35.22         16.54        2.5480    0   2   4         6
                38.74          3.35        2.3242    2   0   5         6
                39.70         25.99        2.2702    1   0   7         6
                40.17          1.15        2.2447    1   1   6        12
                45.65         28.65        1.9872    0   3   3         6
                47.05         10.92        1.9314    0   2   7         6
                48.14          7.38        1.8900    0   0   9         2
                49.61         30.32        1.8375    2   2   0         6
                51.70          4.90        1.7680    2   0   8         6
                52.34          7.22        1.7480    2   2   3        12
                52.97          6.18        1.7285    3   1   2        12
                53.60          1.10        1.7097    2   1   7        12
                54.60          1.32        1.6808    1   1   9        12
                56.43          4.88        1.6305    1   3   4        12
                57.88          6.53        1.5932    1   2   8        12
                58.23          6.03        1.5844    4   0   1         6
                58.94          3.67        1.5670    3   1   5        12
                59.06          6.28        1.5642    0   4   2         6
                60.00         15.32        1.5419    2   2   6        12
                61.84         19.14        1.5002    0   2  10         6
                62.30          5.29        1.4904    4   0   4         6
                63.99          1.24        1.4549    3   2   1        12
                64.67          4.23        1.4414    0   4   5         6
                64.78          4.40        1.4392    2   3   2        12
                65.33          2.36        1.4283    1   3   7        12
                66.22          2.40        1.4113    0   3   9         6
                67.32          4.32        1.3909    2   0  11         6
                67.86          1.38        1.3811    3   2   4        12
                69.70          2.80        1.3491    1   4   3        12
                69.70          4.33        1.3491    4   1   3        12
                70.77          3.19        1.3313    4   0   7         6
                71.63          5.08        1.3175    2   2   9        12
                73.95          1.23        1.2817    1   0  13         6
                76.04          5.33        1.2517    3   2   7        12
                79.95          1.38        1.1999    2   4   1        12
                83.12          3.10        1.1621    4   0  10         6
                83.52          1.16        1.1575    2   4   4        12
                84.24          3.37        1.1495    2   1  13        12
                85.65          1.90        1.1341    4   2   5        12
                86.77          1.95        1.1224    2   2  12        12
                88.08          2.38        1.1090    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.