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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FREIBERGITE

4, t-tennantite-tetrahedrite, Ag, f-fahlores, sf-proper-fahlores, s-fahlores

Cu(6.41)Fe(0.7)Zn(1.35)Ag(3.64)Sb(3.91)As(0.06)S(12.93)


Cubic  I 4(-)3m  Z = 2

R =0.045          NR =341

28 .5 .1903

Ref.Str.:

         Rozhdestvenskaya I.V., Zayakina N.V., Samusikov V.P. (1993)

         * Mineral. Zh., v15, 2, 9-17

Reserv:

         N.A.D.

                   Initial data from BDM-file 

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

             a =  10.576    alpha =   90.0 
             b =  10.576    beta  =   90.0 
             c =  10.576    gamma =   90.0 

    Unit cell volume (cub. angs.) =  1182.94

    Molar volume ( cub.cm/mol.) =   356.27

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

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

   1 0.25    0.5     0.0      2.36   Cu    = 0.68, Zn    = 0.23, Fe    = 0.15
   2 0.2126  0.0     0.0      4.86   Cu    = 0.39, Ag    = 0.61
   3 0.2687  0.2687  0.2687   1.46   Sb    = 0.99, As    = 0.01
   4 0.121   0.121   0.3661   1.26   S     = 1.00
   5 0.0     0.0     0.0      1.26   S     = 1.00


  Co-ordinates for all atomic positions :

   No       NoP      x/a        y/b       z/c 

     1       1     0.25       0.5        0.0   
     2       2     0.2126     0.0        0.0   
     3       3     0.2687     0.2687     0.2687
     4       4     0.121      0.121      0.3661
     5       5     0.0        0.0        0.0   
     6       1     0.25       0.0        0.5   
     7       2     0.2874     0.5        0.5   
     8       3     0.2313     0.2313     0.7687
     9       4     0.379      0.379      0.8661
    10       5     0.5        0.5        0.5   
    11       1     0.5        0.75       0.0   
    12       1     0.75       0.5        0.0   
    13       1     0.5        0.25       0.0   
    14       2     0.0        0.7874     0.0   
    15       2     0.7874     0.0        0.0   
    16       2     0.0        0.2126     0.0   
    17       3     0.2687     0.7313     0.7313
    18       3     0.7313     0.7313     0.2687
    19       3     0.7313     0.2687     0.7313
    20       4     0.121      0.879      0.6339
    21       4     0.879      0.879      0.3661
    22       4     0.879      0.121      0.6339
    23       1     0.0        0.75       0.5   
    24       1     0.75       0.0        0.5   
    25       1     0.0        0.25       0.5   
    26       2     0.5        0.7126     0.5   
    27       2     0.7126     0.5        0.5   
    28       2     0.5        0.2874     0.5   
    29       3     0.2313     0.7687     0.2313
    30       3     0.7687     0.7687     0.7687
    31       3     0.7687     0.2313     0.2313
    32       4     0.379      0.621      0.1339
    33       4     0.621      0.621      0.8661
    34       4     0.621      0.379      0.1339
    35       1     0.5        0.0        0.25  
    36       2     0.0        0.0        0.2126
    37       4     0.121      0.3661     0.121 
    38       4     0.3661     0.121      0.121 
    39       1     0.0        0.5        0.25  
    40       2     0.5        0.5        0.2874
    41       4     0.379      0.8661     0.379 
    42       4     0.8661     0.379      0.379 
    43       1     0.0        0.5        0.75  
    44       1     0.5        0.0        0.75  
    45       2     0.0        0.0        0.7874
    46       4     0.879      0.6339     0.121 
    47       4     0.6339     0.121      0.879 
    48       4     0.879      0.3661     0.879 
    49       4     0.3661     0.879      0.879 
    50       4     0.121      0.6339     0.879 
    51       4     0.6339     0.879      0.121 
    52       2     0.5        0.5        0.7126
    53       4     0.621      0.1339     0.379 
    54       4     0.1339     0.379      0.621 
    55       4     0.621      0.8661     0.621 
    56       4     0.8661     0.621      0.621 
    57       4     0.379      0.1339     0.621 
    58       4     0.1339     0.621      0.379 


X-ray density (g/cm cub.)   =      5.18

MU (1/cm) =     831.101    Mass attenuation coefficient (cm**2/g) =    160.49 

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

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

    1   Cu   ,Zn   ,Fe       3.36         4
                                                 2.3461       4
                                                 2.3461       4
                                                 2.3461       4
                                                 2.3461       4
    2   Cu   ,Ag             3.54         3
                                                 2.2485       5
                                                 2.4312       4
                                                 2.4312       4
    3   Sb   ,As             3.264        3
                                                 2.4375       4
                                                 2.4375       4
                                                 2.4375       4
    4    S                   4.368       10
                                                 4.274        5
                                                 3.8173       4
                                                 3.6195       4
                                                 3.8173       4
                                                 3.6659       4
                                                 3.6659       4
                                                 3.8381       4
                                                 3.8381       4
                                                 3.8381       4
                                                 3.8381       4
    5    S                   4.368       12
                                                 4.274        4
                                                 4.274        4
                                                 4.274        4
                                                 4.274        4
                                                 4.274        4
                                                 4.274        4
                                                 4.274        4
                                                 4.274        4
                                                 4.274        4
                                                 4.274        4
                                                 4.274        4
                                                 4.274        4

  X-ray diffraction powder data (II),  X-Ray W.L. =   1.54056(angs.):

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

    1   1   1   0  5.912  11.824   0.067  185.54   12       90.2     1293.2
    2   2   0   0  8.376  16.752   0.095   91.32    6       71.6      200.5
    3   1   1   2 10.277  20.554   0.116   59.93   24       59.6      365.2
    4   2   2   0 11.888  23.776   0.134   44.25   12      154.1      901.4
    5   3   1   0 13.316  26.632   0.15    34.85   24       43.4      112.8
    6   2   2   2 14.614  29.227   0.164   28.6     8      926.8    14042.4
    7   3   2   1 15.814  31.628   0.177   24.14   48      111.7     1033.4
    8   4   0   0 16.938  33.875   0.189   20.81    6      588.7     3091.9
    9   1   1   4 17.999  35.998   0.201   18.22   24      179.0     1001.0
   10   3   3   0 17.999  35.998   0.201   18.22   12      115.7      209.3
   11   4   2   0 19.009  38.018   0.211   16.16   24       80.8      180.9
   12   3   3   2 19.975  39.951   0.222   14.48   24      158.9      626.7
   13   2   2   4 20.904  41.808   0.232   13.08   24       68.2      104.2
   14   4   3   1 21.801  43.601   0.241   11.9    48      141.1      812.8
   15   5   1   0 21.801  43.601   0.241   11.9    24      180.5      665.3
   16   5   2   1 23.511  47.022   0.259   10.04   48      146.8      741.6
   17   4   4   0 24.331  48.662   0.267    9.29   12      845.0     5686.4
   18   3   3   4 25.131  50.261   0.276    8.63   24      125.1      231.7
   19   5   3   0 25.131  50.261   0.276    8.63   24       34.2       17.3
   20   4   4   2 25.912  51.825   0.284    8.05   24       88.4      107.8
   21   6   0   0 25.912  51.825   0.284    8.05    6       38.2        5.0
   22   1   1   6 26.678  53.355   0.291    7.53   24      237.3      727.4
   23   5   3   2 26.678  53.355   0.291    7.53   48       80.3      166.6
   24   6   2   0 27.428  54.856   0.299    7.07   24      129.6      203.7
   25   5   4   1 28.165  56.33    0.306    6.66   48      101.6      235.8
   26   2   2   6 28.889  57.779   0.314    6.28   24      515.8     2867.1
   27   6   3   1 29.602  59.205   0.321    5.95   48      116.2      275.6
   28   4   4   4 30.305  60.61    0.328    5.64    8      298.5      287.5
   29   5   4   3 30.998  61.996   0.334    5.37   48       93.2      159.8
   30   5   5   0 30.998  61.996   0.334    5.37   12      190.6      167.3
   31   7   1   0 30.998  61.996   0.334    5.37   24       90.2       74.9
   32   6   4   0 31.682  63.364   0.341    5.12   24        6.9        0.4
   33   3   3   6 32.358  64.716   0.347    4.89   24      145.7      178.0
   34   5   5   2 32.358  64.716   0.347    4.89   24       57.2       27.4
   35   7   2   1 32.358  64.716   0.347    4.89   48       18.4        5.7
   36   6   4   2 33.027  66.054   0.354    4.68   48       74.0       87.9
   37   7   3   0 33.689  67.377   0.36     4.48   24       17.7        2.4
   38   6   5   1 34.994  69.987   0.372    4.15   48      117.1      195.0
   39   7   3   2 34.994  69.987   0.372    4.15   48      113.6      183.5
   40   8   0   0 35.638  71.276   0.378    4.0     6      538.8      497.7
   41   1   1   8 36.278  72.555   0.384    3.86   24      147.8      144.7
   42   5   5   4 36.278  72.555   0.384    3.86   24      160.3      170.1
   43   7   4   1 36.278  72.555   0.384    3.86   48       77.9       80.4
   44   4   4   6 36.913  73.825   0.39     3.74   24       28.7        5.3
   45   8   2   0 36.913  73.825   0.39     3.74   24       58.6       22.0
   46   6   5   3 37.543  75.087   0.396    3.62   48      172.7      370.5
   47   2   2   8 38.171  76.341   0.401    3.52   24       21.6        2.8
   48   6   6   0 38.171  76.341   0.401    3.52   12      101.5       31.1
   49   7   4   3 38.795  77.589   0.407    3.42   48       86.0       86.7
   50   7   5   0 38.795  77.589   0.407    3.42   24       43.1       10.9
   51   8   3   1 38.795  77.589   0.407    3.42   48      169.4      336.7
   52   6   6   2 39.416  78.831   0.412    3.33   24      329.7      621.0
   53   7   5   2 40.034  80.068   0.418    3.25   48      109.3      133.3
   54   8   4   0 40.65   81.3     0.423    3.18   24      150.1      122.8
   55   3   3   8 41.264  82.528   0.428    3.11   24      155.0      128.2
   56   9   1   0 41.264  82.528   0.428    3.11   24       57.8       17.8
   57   8   4   2 41.876  83.752   0.433    3.05   48       58.6       35.9
   58   5   5   6 42.487  84.974   0.438    3.0    24      144.8      107.8
   59   7   6   1 42.487  84.974   0.438    3.0    48      104.5      112.1
   60   9   2   1 42.487  84.974   0.438    3.0    48       42.2       18.3
   61   6   6   4 43.097  86.194   0.443    2.95   24       79.8       32.2
   62   7   5   4 43.706  87.411   0.449    2.9    48      105.8      111.4
   63   8   5   1 43.706  87.411   0.449    2.9    48      134.2      179.3
   64   9   3   0 43.706  87.411   0.449    2.9    24       24.0        2.9
   65   7   6   3 44.922  89.844   0.458    2.83   48       79.1       60.7
   66   9   3   2 44.922  89.844   0.458    2.83   48       95.8       89.1


  X-ray diffraction powder data (I)...X-Ray wave length =  1.54056 (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   5.912  11.824  7.47836     1293.2      9.2      9.3     5.6
    2   2   0   0   8.376  16.752  5.288        200.5      1.4      1.4     5.6
    3   1   1   2  10.277  20.554  4.31763      365.2      2.6      2.6     5.6
    4   2   2   0  11.888  23.776  3.73918      901.4      6.4      6.4     5.6
    5   2   2   2  14.614  29.227  3.05303    14042.4    100.0    100.0     5.6
    6   3   2   1  15.814  31.628  2.82655     1033.4      7.4      7.3     5.6
    7   4   0   0  16.938  33.875  2.644       3091.9     22.0     21.9     5.7
    8   1   1   4  17.999  35.998  2.49279     1210.3      8.6      8.6     5.7
    9   4   2   0  19.009  38.018  2.36487      180.9      1.3      1.3     5.7
   10   3   3   2  19.975  39.951  2.25481      626.7      4.5      4.4     5.7
   11   4   3   1  21.801  43.601  2.07412     1478.1     10.5     10.4     5.7
   12   5   2   1  23.511  47.022  1.9309       741.6      5.3      5.2     5.7
   13   4   4   0  24.331  48.662  1.86959     5686.4     40.5     39.7     5.7
   14   3   3   4  25.131  50.261  1.81377      248.9      1.8      1.7     5.8
   15   1   1   6  26.678  53.355  1.71565      894.1      6.4      6.2     5.8
   16   6   2   0  27.428  54.856  1.67221      203.7      1.5      1.4     5.8
   17   5   4   1  28.165  56.33   1.63191      235.8      1.7      1.6     5.8
   18   2   2   6  28.889  57.779  1.59439     2867.1     20.4     19.8     5.8
   19   6   3   1  29.602  59.205  1.55935      275.6      2.0      1.9     5.8
   20   4   4   4  30.305  60.61   1.52651      287.5      2.0      2.0     5.8
   21   5   5   0  30.998  61.996  1.49567      402.0      2.9      2.8     5.8
   22   3   3   6  32.358  64.716  1.43921      211.0      1.5      1.4     5.9
   23   6   5   1  34.994  69.987  1.34315      378.5      2.7      2.6     5.9
   24   8   0   0  35.638  71.276  1.322        497.7      3.5      3.4     5.9
   25   5   5   4  36.278  72.555  1.30182      395.2      2.8      2.7     6.0
   26   6   5   3  37.543  75.087  1.26407      370.5      2.6      2.5     6.0
   27   8   3   1  38.795  77.589  1.22944      434.3      3.1      2.9     6.0
   28   6   6   2  39.416  78.831  1.21315      621.0      4.4      4.1     6.0
   29   3   3   8  41.264  82.528  1.16792      146.0      1.0      1.0     6.1
   30   7   6   1  42.487  84.974  1.14044      238.2      1.7      1.6     6.1
   31   8   5   1  43.706  87.411  1.11481      293.6      2.1      1.9     6.2
   32   9   3   2  44.922  89.844  1.09083      149.9      1.1      1.0     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)