Klyuchevskite
      Gorskaya M G, Filatov S K, Rozhdestvenskaya I V, Vergasova L P
      Mineralogical Magazine 56 (1992) 411-416
      The crystal structure of klyuchevskite, K3Cu3(Fe,Al)O2(SO4)4,
      a new mineral from Kamchatka volcanic sublimates
      Locality: Tolbachik Main Fracture Eruption, Kamchatka Peninsula, Russia
      _database_code_amcsd 0014497

      CELL PARAMETERS:   18.6670   4.9400  18.4050   90.000  101.500   90.000
      SPACE GROUP: I2        
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1663.145
      Density (g/cm3):      3.094
      MAX. ABS. INTENSITY / VOLUME**2:      18.27444376    
      RIR:      1.923
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 6.16          1.79       14.3529   -1   0   1         2
                 7.54         15.12       11.7270    1   0   1         2
                 9.67        100.00        9.1461    2   0   0         2
                 9.81         95.73        9.0178    0   0   2         2
                12.33         52.53        7.1764   -2   0   2         2
                14.38          3.68        6.1609   -3   0   1         2
                14.56          4.02        6.0823   -1   0   3         2
                15.11         10.41        5.8635    2   0   2         2
                16.25          3.08        5.4557    3   0   1         2
                16.41          4.98        5.4008    1   0   3         2
                19.41          1.91        4.5731    4   0   0         2
                19.69          5.12        4.5089    0   0   4         2
                19.94          1.31        4.4523   -4   0   2         2
                21.48          3.42        4.1372    2   1   1         2
                21.53          2.82        4.1281    1   1   2         2
                22.75          4.05        3.9090    3   0   3         2
                23.17          3.19        3.8384    3   1   0         2
                23.31          1.07        3.8167    0   1   3         2
                23.50         30.38        3.7855    4   0   2         2
                23.68          9.24        3.7579    2   0   4         2
                24.03          1.64        3.7032   -3   1   2         2
                24.10         20.75        3.6924   -2   1   3         2
                24.18          2.48        3.6810   -1   0   5         2
                24.81          1.98        3.5882   -4   0   4         2
                25.80          6.66        3.4538    5   0   1         2
                26.07          3.65        3.4174   -3   0   5         2
                26.12          7.20        3.4122    1   0   5         2
                26.35         14.18        3.3821    3   1   2         2
                26.42          4.29        3.3738    2   1   3         2
                26.49          3.92        3.3649   -1   1   4         2
                27.74          2.78        3.2157    4   1   1         2
                28.50         30.73        3.1317   -4   1   3         2
                28.59          2.65        3.1226   -3   1   4         2
                28.99          6.00        3.0805   -6   0   2         2
                29.29          1.59        3.0487    6   0   0         2
                29.37          2.36        3.0411   -2   0   6         2
                29.72          1.59        3.0059    0   0   6         2
                30.40          1.22        2.9400    5   1   0         2
                30.43          4.32        2.9373   -5   1   2         2
                30.67         12.12        2.9148   -2   1   5         2
                31.16          1.13        2.8706   -5   0   5         2
                32.21          8.61        2.7790   -4   0   6         2
                32.40          5.39        2.7632    4   1   3         2
                32.48         13.30        2.7569    3   1   4         2
                33.54         17.57        2.6719    5   1   2         2
                33.71         16.72        2.6586   -4   1   5         2
                33.76         13.86        2.6549    2   1   5         2
                34.07         10.50        2.6317   -6   1   1         2
                34.16          2.94        2.6246   -1   0   7         2
                34.43          3.89        2.6048   -1   1   6         2
                35.28          7.34        2.5443   -6   1   3         2
                35.55          4.45        2.5254   -3   1   6         2
                35.79         10.23        2.5087    6   1   1         2
                36.37         28.43        2.4700    0   2   0         1
                37.76          1.84        2.3823    0   2   2         2
                38.38          2.59        2.3454    5   0   5         2
                38.52          1.44        2.3373   -5   0   7         2
                38.55          3.22        2.3355   -2   2   2         2
                38.82          1.48        2.3200    6   0   4         2
                39.17          9.89        2.2999    5   1   4         2
                39.18          5.78        2.2992   -6   1   5         2
                39.28          1.83        2.2935   -5   1   6         2
                39.44          2.19        2.2845    0   1   7         2
                40.14          1.85        2.2462    1   2   3         2
                40.28          1.31        2.2389    7   0   3         2
                40.63          6.36        2.2208   -7   1   4         2
                40.64          2.84        2.2199    3   0   7         2
                40.92          8.48        2.2054   -4   1   7         2
                42.06         10.55        2.1485    7   1   2         2
                43.49          1.04        2.0810   -8   1   3         2
                43.50          1.57        2.0804   -1   1   8         2
                43.76          3.25        2.0686    4   2   2         2
                43.82          1.12        2.0660   -9   0   1         2
                43.86          2.65        2.0641    2   2   4         2
                43.95          1.56        2.0601   -3   1   8         2
                44.70          2.86        2.0274   -3   0   9         2
                45.13          1.30        2.0091    5   2   1         2
                45.20          4.27        2.0063   -6   1   7         2
                45.92          1.33        1.9763    9   0   1         2
                46.37          4.16        1.9583   -8   1   5         2
                46.54          1.34        1.9513    5   1   6         2
                46.57          1.71        1.9504    1   0   9         2
                47.16          1.39        1.9270   -6   2   2         2
                47.27          3.01        1.9229    7   1   4         2
                47.37          1.20        1.9192    6   2   0         2
                47.42          3.47        1.9173   -2   2   6         2
                47.56          2.00        1.9118   -9   1   2         2
                47.65          2.11        1.9084    0   2   6         2
                48.55          2.55        1.8751    5   2   3         2
                49.21          1.26        1.8516   -6   2   4         2
                49.80          1.86        1.8309    6   2   2         2
                50.76          3.09        1.7987   -1   2   7         2
                51.65          1.08        1.7697   -7   0   9         2
                52.23          1.44        1.7514    1   2   7         2
                52.77          1.60        1.7347   -6   1   9         2
                53.37          2.95        1.7167   -1   1  10         2
                54.39          1.45        1.6869  -11   0   1         2
                54.54          1.02        1.6824   -2   2   8         2
                54.70          1.26        1.6779    8   2   0         2
                54.79          1.30        1.6754  -10   1   5         2
                54.80          1.70        1.6753    7   0   7         2
                54.89          1.25        1.6726    8   1   5         2
                55.67          3.33        1.6511    3   2   7         2
                56.20          1.11        1.6367    9   0   5         2
                57.42          1.00        1.6048  -11   1   2         2
                58.22          1.67        1.5847   -9   2   1         2
                58.44          2.51        1.5791   -9   2   3         2
                58.52          1.91        1.5772   -8   0  10         2
                58.76          2.56        1.5713   -1   2   9         2
                58.83          1.30        1.5697  -10   1   7         2
                58.94          1.16        1.5671   -3   2   9         2
                59.28          2.41        1.5588    3   1  10         2
                59.57          1.21        1.5518    3   3   2         2
                59.94          1.19        1.5431    9   2   1         2
                60.37          1.26        1.5333   -7   0  11         2
                60.48          4.86        1.5307    1   2   9         2
                60.72          2.49        1.5254   -4   3   3         2
                60.76          1.30        1.5244   12   0   0         2
                61.94          1.42        1.4982   -2   3   5         2
                63.00          2.44        1.4754    3   3   4         2
                63.32          1.38        1.4687  -10   2   4         2
                63.59          2.32        1.4632   -3   1  12         2
                63.65          2.06        1.4619    5   3   2         2
                63.76          1.71        1.4597   -4   3   5         2
                63.79          2.20        1.4591    2   3   5         2
                63.98          1.85        1.4552   -6   3   1         2
                64.00          1.12        1.4549    3   2   9         2
                64.74          1.10        1.4399   -6   3   3         2
                65.07          1.35        1.4334    6   3   1         2
                65.65          1.21        1.4222   -9   0  11         2
                67.05          1.28        1.3958  -11   2   3         2
                67.20          2.47        1.3930  -11   2   1         2
                67.32          1.06        1.3909    5   3   4         2
                67.33          1.50        1.3908   -6   3   5         2
                67.40          1.77        1.3895   -8   0  12         2
                67.56          1.22        1.3865    7   2   7         2
                69.34          1.02        1.3552    7   3   2         2
                70.89          1.04        1.3293   -8   2  10         2
                72.82          1.15        1.2989  -12   0  10         2
                72.92          1.07        1.2972   12   2   0         2
                77.25          2.18        1.2350    0   4   0         1
                78.33          1.18        1.2206    4   1  13         2
                83.04          1.03        1.1630    3   3  10         2
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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.