Institute of Experimental Mineralogy
                 Russian Academy of Sciences
     -------------------------------------------------
           142432, Chernogolovka, Moscow district
             A.V. Chichagov  +7(496)52-22320

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          ***      W W W - X R A Y P O L       ***
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HANSWILKEITE

1

KFeS(2)


Monoclinic  C 2/c  Z = 4

C2/c

8 .12 .23

Ref.Str.:

         Clark J.R., Brown G.E. (1980)

         * Amer. Mineral., 65, 477-482

         R: IMA 2022-041. Locality - Nahal Gorer, Hatrurim basin,

         Negev Desert, Israel. The coordinates of atoms

         are from synthetic HANSWILKEITE. N.A.D.

                   Initial data from BDM-file 

   Lattice parameters (cub. angs.,degr.):

             a =   7.0914   alpha =   90.0 
             b =  11.3154   beta  =  113.24
             c =   5.3992   gamma =   90.0 

    Unit cell volume (cub. angs.) =   398.08

    Molar volume ( cub.cm/mol.) =    59.94

  Co-ordinates, thermal parameters, occupation for atomic positions:

NoP   x/a     y/b     z/c    B(j)   atom  / occupation

   1 0.0     0.9967  0.25     0.0    Fe    = 1.00
   2 0.0     0.3572  0.25     0.0    K     = 1.00
   3 0.196   0.1098  0.1068   0.0    S     = 1.00


  Co-ordinates for all atomic positions :

   No       NoP      x/a        y/b       z/c 

     1       1     0.0        0.9967     0.25  
     2       2     0.0        0.3572     0.25  
     3       3     0.196      0.1098     0.1068
     4       1     0.0        0.0033     0.75  
     5       2     0.0        0.6428     0.75  
     6       3     0.804      0.8902     0.8932
     7       3     0.196      0.8902     0.6068
     8       3     0.804      0.1098     0.3932
     9       1     0.5        0.5033     0.75  
    10       2     0.5        0.1428     0.75  
    11       3     0.696      0.3902     0.6068
    12       1     0.5        0.4967     0.25  
    13       2     0.5        0.8572     0.25  
    14       3     0.304      0.6098     0.3932
    15       3     0.696      0.6098     0.1068
    16       3     0.304      0.3902     0.8932


X-ray density (g/cm cub.)   =      2.65

MU (1/cm) =     334.856    Mass attenuation coefficient (cm**2/g) =    126.207

 Selected interatomic distances (cation-anion,anion-anion):

 NoP    Atom              Rad.sph.      C.N.    Distance     NoP N.
                           (angs.)               (angs.)

    1    Fe                  3.144        4
                                                 2.2397       3
                                                 2.2319       3
                                                 2.2319       3
                                                 2.2397       3
    2    K                   3.78         8
                                                 3.3488       3
                                                 3.3488       3
                                                 3.4316       3
                                                 3.3072       3
                                                 3.4784       3
                                                 3.4784       3
                                                 3.3072       3
                                                 3.4316       3
    3    S                   4.368        7
                                                 3.5639       3
                                                 3.6691       3
                                                 3.6691       3
                                                 3.9647       3
                                                 3.6758       3
                                                 3.7575       3
                                                 3.561        3

  X-ray diffraction powder data (II),  X-Ray W.L. =   1.78892(angs.):

  No   H   K   L   Theta 2*Theta    S       LPG   MF        F          I int.
                    ( degree )                                         *100

    1   0   2   0  9.096  18.193   0.088   77.09    2      103.2     1037.1
    2   1   1   0  9.115  18.229   0.089   76.77    4       83.6     1354.2
    3   1   1  -1 11.251  22.502   0.109   49.65    4       11.9       17.8
    4   0   2   1 13.875  27.749   0.134   31.94    4        1.1        0.1
    5   1   3   0 15.903  31.806   0.153   23.85    4      125.3      945.3
    6   2   0   0 15.935  31.87    0.153   23.75    2       69.7      145.4
    7   1   1   1 16.125  32.25    0.155   23.15    4      105.1      645.8
    8   1   3  -1 17.262  34.524   0.166   19.96    4       24.8       30.9
    9   2   2  -1 17.835  35.671   0.171   18.59    4      151.9     1082.1
   10   0   4   0 18.433  36.866   0.177   17.29    2       56.2       69.0
   11   2   2   0 18.47   36.941   0.177   17.21    4       56.6      139.2
   12   1   1  -2 19.918  39.835   0.19    14.57    4       23.2       19.8
   13   1   3   1 20.888  41.777   0.199   13.1     4       92.8      284.8
   14   2   0  -2 20.9    41.801   0.199   13.08    2       96.5      153.9
   15   0   0   2 21.137  42.274   0.202   12.76    2      114.6      211.5
   16   0   4   1 21.345  42.69    0.203   12.48    4       37.4       44.0
   17   3   1  -1 22.766  45.533   0.216   10.8     4       33.3       30.3
   18   2   2  -2 22.967  45.935   0.218   10.58    4       58.9       92.7
   19   0   2   2 23.187  46.374   0.22    10.36    4       62.1      100.8
   20   1   3  -2 24.047  48.094   0.228    9.54    4      162.3      634.5
   21   2   4  -1 24.258  48.516   0.23     9.35    4       14.3        4.8
   22   2   2   1 24.499  48.997   0.232    9.14    4       52.4       63.4
   23   1   5   0 24.734  49.467   0.234    8.95    4       60.5       82.7
   24   2   4   0 24.756  49.512   0.234    8.93    4       88.8      177.6
   25   3   1   0 24.793  49.586   0.234    8.9     4       10.1        2.3
   26   1   5  -1 25.698  51.396   0.242    8.2     4       43.4       39.0
   27   3   1  -2 25.745  51.489   0.243    8.17    4       87.1      156.3
   28   1   1   2 26.147  52.294   0.246    7.88    4       95.1      179.9
   29   3   3  -1 26.546  53.093   0.25     7.61    4        8.5        1.4
   30   0   6   0 28.313  56.626   0.265    6.58    2       58.6       28.5
   31   3   3   0 28.374  56.748   0.266    6.55    4      145.3      348.6
   32   1   5   1 28.461  56.921   0.266    6.5     4       75.5       93.6
   33   2   4  -2 28.47   56.94    0.266    6.5     4       59.4       57.9
   34   0   4   2 28.659  57.318   0.268    6.4     4       44.5       31.9
   35   3   3  -2 29.244  58.487   0.273    6.11    4       86.7      116.0
   36   1   3   2 29.614  59.228   0.276    5.94    4       81.1       98.8
   37   2   4   1 29.797  59.594   0.278    5.86    4       14.3        3.0
   38   0   6   1 30.491  60.982   0.284    5.57    4       11.8        2.0
   39   1   1  -3 30.596  61.192   0.285    5.53    4        0.8        0.0
   40   1   5  -2 31.049  62.098   0.288    5.35    4      148.1      296.1
   41   3   1   1 31.11   62.22    0.289    5.33    4       10.4        1.4
   42   4   0  -2 31.645  63.29    0.293    5.13    2      178.5      206.3
   43   2   2  -3 31.675  63.35    0.294    5.12    4       15.0        2.9
   44   4   2  -1 32.004  64.007   0.296    5.0     4       18.1        4.1
   45   2   0   2 32.174  64.349   0.298    4.95    2      168.6      177.5
   46   3   1  -3 32.747  65.493   0.302    4.76    4       78.3       73.7
   47   2   6  -1 32.82   65.64    0.303    4.74    4       84.8       86.1
   48   3   5  -1 33.193  66.386   0.306    4.63    4       46.6       25.4
   49   4   2  -2 33.227  66.454   0.306    4.62    4       68.8       55.2
   50   2   6   0 33.231  66.463   0.306    4.62    4      122.8      175.7
   51   4   0   0 33.305  66.611   0.307    4.59    2      124.5       89.9
   52   2   2   2 33.743  67.486   0.311    4.47    4       66.7       50.2
   53   1   3  -3 33.774  67.548   0.311    4.46    4       29.4        9.7
   54   3   3   1 34.263  68.525   0.315    4.33    4       43.9       21.0
   55   0   2   3 34.3    68.601   0.315    4.32    4      106.8      124.3
   56   1   7   0 34.758  69.516   0.319    4.2     4       24.5        6.4
   57   3   5   0 34.806  69.612   0.319    4.19    4      130.6      180.4
   58   4   2   0 34.848  69.697   0.319    4.18    4       58.0       35.5
   59   1   7  -1 35.547  71.095   0.325    4.02    4       27.3        7.5
   60   3   5  -2 35.586  71.172   0.325    4.01    4       26.2        7.0
   61   3   3  -3 35.825  71.65    0.327    3.96    4       74.5       55.4
   62   1   5   2 35.92   71.84    0.328    3.94    4       16.9        2.8
   63   2   4  -3 36.314  72.628   0.331    3.85    4       23.7        5.5
   64   2   6  -2 36.404  72.809   0.332    3.84    4      104.3      105.4
   65   0   6   2 36.57   73.14    0.333    3.8     4       96.3       89.1
   66   4   4  -1 36.622  73.244   0.333    3.79    4       35.4       12.0
   67   2   6   1 37.578  75.156   0.341    3.62    4       23.4        5.0
   68   4   4  -2 37.775  75.551   0.342    3.58    4       31.5        8.9
   69   1   1   3 37.836  75.673   0.343    3.57    4       34.6       10.8
   70   1   7   1 37.884  75.767   0.343    3.56    4       72.6       47.4
   71   2   4   2 38.265  76.53    0.346    3.5     4       24.1        5.1
   72   4   2  -3 38.331  76.662   0.347    3.49    4       26.5        6.2
   73   0   4   3 38.795  77.59    0.35     3.42    4       10.5        1.0
   74   0   8   0 39.226  78.453   0.354    3.36    2      132.4       74.3
   75   4   4   0 39.319  78.637   0.354    3.34    4       11.7        1.1
   76   1   5  -3 39.758  79.517   0.358    3.29    4       30.2        7.5
   77   5   1  -2 39.934  79.868   0.359    3.26    4       30.3        7.6
   78   5   1  -1 39.943  79.885   0.359    3.26    4       59.3       29.0
   79   1   7  -2 40.163  80.327   0.361    3.23    4       12.6        1.3
   80   3   5   1 40.218  80.437   0.361    3.23    4       25.2        5.2
   81   3   1   2 40.576  81.152   0.364    3.19    4       19.1        2.9
   82   1   3   3 40.76   81.519   0.365    3.16    4       19.0        2.9
   83   0   8   1 41.116  82.232   0.368    3.13    4       67.8       36.3
   84   4   2   1 41.39   82.78    0.37     3.1     4       80.3       50.4
   85   2   0  -4 41.509  83.018   0.37     3.09    2      160.3      100.1
   86   3   5  -3 41.702  83.404   0.372    3.07    4       62.7       30.5
   87   3   7  -1 42.112  84.224   0.375    3.03    4        1.0        0.0
   88   4   4  -3 42.685  85.369   0.379    2.98    4       16.9        2.1
   89   3   1  -4 42.795  85.59    0.38     2.97    4       60.5       27.5
   90   5   3  -2 42.822  85.644   0.38     2.97    4       94.3       66.7
   91   5   3  -1 42.831  85.662   0.38     2.97    4       53.1       21.2
   92   2   2  -4 42.948  85.896   0.381    2.96    4       61.0       27.8
   93   1   1  -4 43.112  86.225   0.382    2.95    4       39.8       11.8
   94   2   8  -1 43.207  86.414   0.383    2.94    4        4.7        0.2
   95   3   3   2 43.457  86.914   0.384    2.92    4      100.2       74.0
   96   2   8   0 43.584  87.167   0.385    2.91    4       43.4       13.8
   97   2   6  -3 43.606  87.213   0.386    2.91    4        1.4        0.0
   98   3   7   0 43.612  87.224   0.386    2.91    4       12.8        1.2
   99   5   1  -3 43.676  87.352   0.386    2.91    4        6.5        0.3
  100   5   1   0 43.702  87.405   0.386    2.9     4       82.6       50.0
  101   4   6  -1 43.901  87.802   0.388    2.89    4       26.2        5.0
  102   3   7  -2 44.347  88.694   0.391    2.86    4       24.2        4.2
  103   1   7   2 44.664  89.327   0.393    2.85    4       25.1        4.5


  X-ray diffraction powder data (I)...X-Ray wave length =  1.78892 (angs.):

  No   H   K   L   Theta 2*Theta    d           I int   I int.n.  I p.h.n.   H(Si)
                    ( degree )   (angstrem)     *100                         *100

    1   1   1   0   9.115  18.229  5.64656     2391.3    100.0    100.0     5.6
    2   1   3   0  15.903  31.806  3.26433      945.3     39.5     39.1     5.6
    3   2   0   0  15.935  31.87   3.2579       145.4      6.1      6.0     5.6
    4   1   1   1  16.125  32.25   3.22055      645.8     27.0     26.7     5.6
    5   1   3  -1  17.262  34.524  3.0143        30.9      1.3      1.3     5.7
    6   2   2  -1  17.835  35.671  2.92037     1082.1     45.3     44.6     5.7
    7   0   4   0  18.433  36.866  2.82885       69.0      2.9      2.8     5.7
    8   2   2   0  18.47   36.941  2.82328      139.2      5.8      5.7     5.7
    9   1   3   1  20.888  41.777  2.50868      438.7     18.3     18.0     5.7
   10   0   0   2  21.137  42.274  2.48048      211.5      8.8      8.7     5.7
   11   0   4   1  21.345  42.69   2.45741       44.0      1.8      1.8     5.7
   12   3   1  -1  22.766  45.533  2.31141       30.3      1.3      1.2     5.7
   13   2   2  -2  22.967  45.935  2.29227       92.7      3.9      3.8     5.7
   14   0   2   2  23.187  46.374  2.27174      100.8      4.2      4.1     5.7
   15   1   3  -2  24.047  48.094  2.19508      634.5     26.5     25.8     5.7
   16   2   2   1  24.499  48.997  2.15704       63.4      2.7      2.6     5.7
   17   2   4   0  24.756  49.512  2.136        260.3     10.9     10.6     5.7
   18   1   5  -1  25.698  51.396  2.06274       39.0      1.6      1.6     5.8
   19   3   1  -2  25.745  51.489  2.05927      156.3      6.5      6.3     5.8
   20   1   1   2  26.147  52.294  2.02974      179.9      7.5      7.3     5.8
   21   0   6   0  28.313  56.626  1.8859        28.5      1.2      1.1     5.8
   22   3   3   0  28.374  56.748  1.88219      348.6     14.6     14.0     5.8
   23   1   5   1  28.461  56.921  1.87694      151.5      6.3      6.1     5.8
   24   0   4   2  28.659  57.318  1.86504       31.9      1.3      1.3     5.8
   25   3   3  -2  29.244  58.487  1.83094      116.0      4.8      4.7     5.8
   26   1   3   2  29.614  59.228  1.81009       98.8      4.1      4.0     5.8
   27   1   5  -2  31.049  62.098  1.73422      296.1     12.4     11.8     5.8
   28   4   0  -2  31.645  63.29   1.70486      206.3      8.6      8.2     5.9
   29   2   0   2  32.174  64.349  1.67975      177.5      7.4      7.1     5.9
   30   3   1  -3  32.747  65.493  1.65357       73.7      3.1      2.9     5.9
   31   2   6  -1  32.82   65.64   1.65029       86.1      3.6      3.4     5.9
   32   3   5  -1  33.193  66.386  1.63382       25.4      1.1      1.0     5.9
   33   2   6   0  33.231  66.463  1.63216      230.9      9.7      9.2     5.9
   34   4   0   0  33.305  66.611  1.62895       89.9      3.8      3.6     5.9
   35   2   2   2  33.743  67.486  1.61028       50.2      2.1      2.0     5.9
   36   0   2   3  34.3    68.601  1.58724      124.3      5.2      4.9     5.9
   37   3   5   0  34.806  69.612  1.56702      180.4      7.5      7.1     5.9
   38   4   2   0  34.848  69.697  1.56536       35.5      1.5      1.4     5.9
   39   3   3  -3  35.825  71.65   1.52818       55.4      2.3      2.2     5.9
   40   2   6  -2  36.404  72.809  1.50715      105.4      4.4      4.1     6.0
   41   0   6   2  36.57   73.14   1.50127       89.1      3.7      3.5     6.0
   42   1   7   1  37.884  75.767  1.45663       47.4      2.0      1.8     6.0
   43   0   8   0  39.226  78.453  1.41442       74.3      3.1      2.9     6.0
   44   5   1  -1  39.943  79.885  1.39319       36.6      1.5      1.4     6.0
   45   0   8   1  41.116  82.232  1.36022       36.3      1.5      1.4     6.1
   46   4   2   1  41.39   82.78   1.35283       50.4      2.1      1.9     6.1
   47   2   0  -4  41.509  83.018  1.34964      100.1      4.2      3.8     6.1
   48   3   5  -3  41.702  83.404  1.34453       30.5      1.3      1.2     6.1
   49   5   3  -2  42.822  85.644  1.31591      115.3      4.8      4.4     6.1
   50   2   2  -4  42.948  85.896  1.31281       27.8      1.2      1.1     6.1
   51   3   3   2  43.457  86.914  1.30044       74.0      3.1      2.8     6.1
   52   5   1   0  43.702  87.405  1.2946        50.0      2.1      1.9     6.2

Reference:
Chichagov A.V. et al.
Information-Calculating System on Crystal Structure Data of Minerals
(MINCRYST)
- Kristallographiya, v.35, n.3, 1990, p.610-616 (in Russian)