Vlodavetsite
      Starova G L, Filatov S K, Matusevich G L, Fundamensky V S
      Mineralogical Magazine 59 (1995) 159-162
      The crystal structure of vlodavetsite, AlCa2(SO4)2F2Cl*4H2O
      Locality: Tolbachik Main Fracture Eruption, Kamchatka, Russia
      _database_code_amcsd 0014515

      CELL PARAMETERS:    6.8700   6.8700  13.3420   90.000   90.000   90.000
      SPACE GROUP: I4/m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    629.701
      Density (g/cm3):      2.345
      MAX. ABS. INTENSITY / VOLUME**2:      13.98384783    
      RIR:      1.941
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                13.27         32.30        6.6710    0   0   2         2
                14.50          1.91        6.1078    1   0   1         8
                18.26          4.84        4.8578    1   1   0         4
                22.64         34.83        3.9270    1   1   2         8
                23.83         23.73        3.7333    1   0   3         8
                25.94        100.00        3.4350    2   0   0         4
                26.73         22.91        3.3355    0   0   4         2
                29.24         18.99        3.0539    2   0   2         8
                29.84         12.97        2.9940    2   1   1         8
                29.84          2.29        2.9940    1   2   1         8
                35.51          7.93        2.5278    1   2   3         8
                36.11         13.52        2.4874    1   0   5         8
                37.01         12.97        2.4289    2   2   0         4
                37.59         11.48        2.3930    2   0   4         8
                39.48          7.58        2.2823    2   2   2         8
                40.57          6.02        2.2237    0   0   6         2
                41.57         11.61        2.1725    3   1   0         4
                41.57         10.28        2.1725    1   3   0         4
                43.83          6.75        2.0657    1   3   2         8
                44.50         10.59        2.0359    3   0   3         8
                44.83          5.90        2.0219    1   1   6         8
                45.00         15.90        2.0146    2   1   5         8
                46.24          2.78        1.9635    2   2   4         8
                49.64          6.21        1.8366    1   0   7         8
                52.23          4.30        1.7514    2   3   3         8
                52.67          7.22        1.7378    3   0   5         8
                53.34          7.91        1.7175    4   0   0         4
                56.86          3.08        1.6193    3   3   0         4
                59.48          7.05        1.5540    3   1   6         8
                59.48          7.15        1.5540    1   3   6         8
                59.62          1.97        1.5507    3   2   5         8
                59.62          5.38        1.5507    2   3   5         8
                60.24          7.96        1.5362    2   4   0         4
                60.24          2.97        1.5362    4   2   0         4
                60.65          3.80        1.5270    4   0   4         8
                61.99          2.53        1.4970    2   4   2         8
                63.50          3.00        1.4650    3   0   7         8
                66.11          1.43        1.4133    4   1   5         8
                67.08          3.04        1.3953    4   2   4         8
                67.08          1.67        1.3953    2   4   4         8
                69.79          1.69        1.3475    2   3   7         8
                71.29          1.83        1.3229    3   1   8         8
                71.43          1.03        1.3207    1   5   2         8
                72.16          3.40        1.3090    3   3   6         8
                73.63          2.35        1.2866    1   1  10         8
                75.84          1.07        1.2545    1   4   7         8
                78.26          1.44        1.2216    3   4   5         8
                78.81          2.08        1.2145    4   4   0         4
                80.23          1.31        1.1965    4   0   8         8
                83.98          1.48        1.1523    5   1   6         8
                84.64          1.37        1.1450    6   0   0         4
                85.39          2.82        1.1369    1   3  10         8
                85.39          2.64        1.1369    3   1  10         8
                86.05          2.05        1.1299    4   2   8         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.