Hydroniumjarosite
      Basciano L C, Peterson R C
      American Mineralogist 93 (2008) 853-862
      Crystal chemistry of the natrojarosite-jarosite and natrojarosite-hydronium
      jarosite solid-solution: A synthetic study with full Fe site occupancy
      Locality: synthetic
      Sample: U
      _database_code_amcsd 0004581

      CELL PARAMETERS:    7.3474   7.3474  16.9253   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    791.292
      Density (g/cm3):      2.946
      MAX. ABS. INTENSITY / VOLUME**2:      20.76885770    
      RIR:      2.296
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.87          6.93        5.9561    1   0   1         6
                15.71         46.43        5.6418    0   0   3         2
                17.44        100.00        5.0858    0   1   2         6
                24.23          2.70        3.6737    1   1   0         6
                25.28          9.42        3.5234    1   0   4         6
                28.55         83.90        3.1268    0   2   1         6
                29.00         67.97        3.0786    1   1   3        12
                29.90          4.18        2.9885    0   1   5         6
                30.01          5.95        2.9780    2   0   2         6
                31.72         13.70        2.8209    0   0   6         2
                35.30         13.36        2.5429    0   2   4         6
                38.85          3.11        2.3183    2   0   5         6
                39.89         22.09        2.2602    1   0   7         6
                40.31          2.31        2.2374    1   1   6        12
                42.63          1.23        2.1210    3   0   0         6
                45.16          1.18        2.0076    0   1   8         6
                45.70         22.78        1.9854    0   3   3         6
                47.21         10.24        1.9251    0   2   7         6
                48.40          5.35        1.8806    0   0   9         2
                49.63         24.18        1.8369    2   2   0         6
                51.90          2.18        1.7617    2   0   8         6
                52.38          8.11        1.7466    2   2   3        12
                53.00          5.60        1.7276    3   1   2        12
                56.50          4.46        1.6288    1   3   4        12
                58.07          6.40        1.5885    1   2   8        12
                58.26          4.68        1.5838    4   0   1         6
                59.03          2.16        1.5649    3   1   5        12
                59.09          3.86        1.5634    0   4   2         6
                60.11         10.65        1.5393    2   2   6        12
                62.12         13.63        1.4942    0   2  10         6
                62.36          3.70        1.4890    4   0   4         6
                64.75          2.90        1.4397    0   4   5         6
                64.81          3.13        1.4385    2   3   2        12
                65.48          1.28        1.4255    1   3   7        12
                66.44          1.87        1.4071    0   3   9         6
                67.64          3.37        1.3852    2   0  11         6
                67.92          1.85        1.3800    3   2   4        12
                69.75          1.58        1.3483    1   4   3        12
                69.75          2.70        1.3483    4   1   3        12
                70.92          2.23        1.3289    4   0   7         6
                71.84          3.05        1.3140    2   2   9        12
                76.18          3.69        1.2497    3   2   7        12
                83.38          1.73        1.1591    4   0  10         6
                84.65          1.92        1.1449    2   1  13        12
                85.74          1.18        1.1331    4   2   5        12
                88.38          1.46        1.1060    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.