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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GERMANITE

1, td-tennantite-tetrahedrite, f-chalcopyrite, sf-germanite, s-germanite

Cu(26)Ge(4)Fe(4)S(32)


Cubic  P 4(-)3n  Z = 4

R =0.036          NR =66

15 .8 .1990

Ref.Str.:

         Tettenhorst R.T., Corbato C.E. (1984)

         * Amer. Mineral., 69, 943-947

                   Initial data from BDM-file 

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

             a =  10.5862   alpha =   90.0 
             b =  10.5862   beta  =   90.0 
             c =  10.5862   gamma =   90.0 

    Unit cell volume (cub. angs.) =  1186.37

    Molar volume ( cub.cm/mol.) =   178.65

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

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

   1 0.0     0.0     0.0      1.2    Cu    = 1.00
   2 0.25    0.5     0.0      1.2    Cu    = 1.00
   3 0.25    0.0     0.5      1.2    Cu    = 1.00
   4 0.257   0.0     0.0      1.2    Cu    = 1.00
   5 0.24    0.24    0.24     1.3    Ge    = 0.5 , Fe    = 0.5 
   6 0.121   0.121   0.121    1.3    S     = 1.00
   7 0.379   0.364   0.121    1.3    S     = 1.00


  Co-ordinates for all atomic positions :

   No       NoP      x/a        y/b       z/c 

     1       1     0.0        0.0        0.0   
     2       2     0.25       0.5        0.0   
     3       3     0.25       0.0        0.5   
     4       4     0.257      0.0        0.0   
     5       5     0.24       0.24       0.24  
     6       6     0.121      0.121      0.121 
     7       7     0.379      0.364      0.121 
     8       2     0.75       0.5        0.0   
     9       3     0.75       0.0        0.5   
    10       4     0.743      0.0        0.0   
    11       5     0.76       0.76       0.24  
    12       6     0.879      0.879      0.121 
    13       7     0.621      0.636      0.121 
    14       5     0.76       0.24       0.76  
    15       6     0.879      0.121      0.879 
    16       7     0.621      0.364      0.879 
    17       5     0.24       0.76       0.76  
    18       6     0.121      0.879      0.879 
    19       7     0.379      0.636      0.879 
    20       1     0.5        0.5        0.5   
    21       2     0.0        0.75       0.5   
    22       3     0.5        0.75       0.0   
    23       4     0.5        0.757      0.5   
    24       5     0.74       0.74       0.74  
    25       6     0.621      0.621      0.621 
    26       7     0.864      0.879      0.621 
    27       2     0.0        0.25       0.5   
    28       3     0.5        0.25       0.0   
    29       4     0.5        0.243      0.5   
    30       5     0.26       0.26       0.74  
    31       6     0.379      0.379      0.621 
    32       7     0.136      0.121      0.621 
    33       5     0.74       0.26       0.26  
    34       6     0.621      0.379      0.379 
    35       7     0.864      0.121      0.379 
    36       5     0.26       0.74       0.26  
    37       6     0.379      0.621      0.379 
    38       7     0.136      0.879      0.379 
    39       2     0.5        0.0        0.25  
    40       3     0.0        0.5        0.25  
    41       4     0.0        0.0        0.257 
    42       4     0.0        0.257      0.0   
    43       7     0.364      0.121      0.379 
    44       7     0.121      0.379      0.364 
    45       2     0.5        0.0        0.75  
    46       3     0.0        0.5        0.75  
    47       4     0.0        0.0        0.743 
    48       4     0.0        0.743      0.0   
    49       7     0.636      0.121      0.621 
    50       7     0.121      0.621      0.636 
    51       7     0.364      0.879      0.621 
    52       7     0.879      0.621      0.364 
    53       7     0.636      0.879      0.379 
    54       7     0.879      0.379      0.636 
    55       4     0.757      0.5        0.5   
    56       4     0.5        0.5        0.757 
    57       7     0.879      0.621      0.864 
    58       7     0.621      0.864      0.879 
    59       4     0.243      0.5        0.5   
    60       4     0.5        0.5        0.243 
    61       7     0.121      0.621      0.136 
    62       7     0.621      0.136      0.121 
    63       7     0.121      0.379      0.864 
    64       7     0.379      0.864      0.121 
    65       7     0.879      0.379      0.136 
    66       7     0.379      0.136      0.879 


X-ray density (g/cm cub.)   =      4.47

MU (1/cm) =     400.373    Mass attenuation coefficient (cm**2/g) =     89.646

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

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

    1    Cu                  3.36         4
                                                 2.2186       6
                                                 2.2186       6
                                                 2.2186       6
                                                 2.2186       6
    2    Cu                  3.36         4
                                                 2.3619       7
                                                 2.3619       7
                                                 2.3619       7
                                                 2.3619       7
    3    Cu                  3.36         4
                                                 2.1767       7
                                                 2.1767       7
                                                 2.1767       7
                                                 2.1767       7
    4    Cu                  3.36         4
                                                 2.314        6
                                                 2.314        6
                                                 2.3198       7
                                                 2.3198       7
    5   Ge   ,Fe             3.144        4
                                                 2.182        6
                                                 2.34         7
                                                 2.34         7
                                                 2.34         7
    6    S                   4.368       12
                                                 3.752        7
                                                 3.623        6
                                                 3.623        6
                                                 3.623        6
                                                 3.8551       7
                                                 3.7481       7
                                                 3.752        7
                                                 3.752        7
                                                 3.8551       7
                                                 3.8551       7
                                                 3.7481       7
                                                 3.7481       7
    7    S                   4.368       12
                                                 3.752        6
                                                 3.8541       7
                                                 3.623        7
                                                 3.8541       7
                                                 3.7481       6
                                                 3.8551       6
                                                 3.7553       7
                                                 3.7553       7
                                                 3.8583       7
                                                 3.5198       7
                                                 3.8583       7
                                                 3.5198       7

  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   1   0   0  4.847   9.694   0.047  277.17    6        0.0        0.0
    2   1   1   0  6.863  13.725   0.067  137.11   12       47.3      261.5
    3   2   0   0  9.729  19.458   0.094   67.12    6       66.0      124.7
    4   2   1   0 10.89   21.781   0.106   53.13   24       15.0       20.5
    5   1   1   2 11.945  23.889   0.116   43.81   24       60.4      272.1
    6   2   2   0 13.826  27.653   0.134   32.18   12       36.8       37.1
    7   3   0   0 14.683  29.367   0.142   28.31    6        0.0        0.0
    8   3   1   0 15.497  30.994   0.149   25.22   24       58.4      146.6
    9   2   2   2 17.019  34.038   0.164   20.59    8      827.1     8006.7
   10   3   2   0 17.737  35.473   0.17    18.82   24       11.3        4.1
   11   3   2   1 18.43   36.86    0.177   17.3    48       57.4      194.4
   12   4   0   0 19.753  39.507   0.189   14.84    6      463.5     1358.9
   13   4   1   0 20.388  40.776   0.195   13.83   24        2.0        0.1
   14   1   1   4 21.006  42.013   0.2     12.94   24       46.7       48.2
   15   3   3   0 21.006  42.013   0.2     12.94   12       79.7       70.2
   16   4   2   0 22.201  44.403   0.211   11.43   24       73.2      104.3
   17   4   2   1 22.78   45.56    0.216   10.78   48       23.3       19.9
   18   3   3   2 23.348  46.695   0.222   10.2    24       75.2       98.4
   19   2   2   4 24.452  48.904   0.231    9.18   24       16.0        4.0
   20   4   3   0 24.99   49.981   0.236    8.74   24        1.6        0.0
   21   5   0   0 24.99   49.981   0.236    8.74    6        0.0        0.0
   22   4   3   1 25.52   51.041   0.241    8.33   48       74.1      155.9
   23   5   1   0 25.52   51.041   0.241    8.33   24       24.7        8.7
   24   4   3   2 27.066  54.131   0.254    7.29   48       22.2       12.3
   25   5   2   0 27.066  54.131   0.254    7.29   24       10.8        1.4
   26   5   2   1 27.567  55.134   0.259    6.99   48       20.9       10.4
   27   4   4   0 28.553  57.105   0.267    6.45   12      976.9     5250.2
   28   3   3   4 29.517  59.033   0.275    5.99   24       71.4       52.0
   29   5   3   0 29.517  59.033   0.275    5.99   24       27.1        7.5
   30   5   3   1 29.991  59.982   0.279    5.78   48        0.0        0.0
   31   4   4   2 30.461  60.923   0.283    5.58   24       76.4       55.5
   32   6   0   0 30.461  60.923   0.283    5.58    6       77.9       14.4
   33   6   1   0 30.927  61.855   0.287    5.4    24       26.6        6.5
   34   1   1   6 31.389  62.779   0.291    5.22   24       52.6       24.7
   35   5   3   2 31.389  62.779   0.291    5.22   48       52.2       48.5
   36   6   2   0 32.302  64.604   0.299    4.91   24        9.1        0.7
   37   5   4   0 32.753  65.506   0.302    4.76   24        1.7        0.0
   38   6   2   1 32.753  65.506   0.302    4.76   48        2.9        0.1
   39   5   4   1 33.201  66.402   0.306    4.62   48       47.5       35.6
   40   2   2   6 34.088  68.176   0.313    4.38   24      609.8     2774.4
   41   5   4   2 34.527  69.054   0.317    4.26   48       16.7        4.1
   42   6   3   0 34.527  69.054   0.317    4.26   24       22.3        3.6
   43   6   3   1 34.964  69.928   0.32     4.15   48       83.3       98.4
   44   4   4   4 35.83   71.66    0.327    3.96    8      390.9      343.6
   45   6   3   2 36.26   72.52    0.331    3.87   48        3.0        0.1
   46   7   0   0 36.26   72.52    0.331    3.87    6        0.0        0.0
   47   5   4   3 36.688  73.376   0.334    3.78   48       29.7       11.4
   48   5   5   0 36.688  73.376   0.334    3.78   12       17.1        0.9
   49   7   1   0 36.688  73.376   0.334    3.78   24       55.2       19.6
   50   6   4   0 37.538  75.076   0.341    3.62   24       81.6       41.2
   51   6   4   1 37.961  75.921   0.344    3.55   48       27.1        8.9
   52   7   2   0 37.961  75.921   0.344    3.55   24        6.2        0.2
   53   3   3   6 38.381  76.763   0.347    3.48   24       59.2       20.8
   54   5   5   2 38.381  76.763   0.347    3.48   24       14.1        1.2
   55   7   2   1 38.381  76.763   0.347    3.48   48       66.6       52.7
   56   6   4   2 39.219  78.438   0.353    3.36   48        3.8        0.2
   57   7   3   0 40.052  80.104   0.36     3.25   24       77.9       33.6
   58   7   3   1 40.466  80.933   0.363    3.2    48        0.0        0.0
   59   6   4   3 41.293  82.586   0.369    3.11   48       24.6        6.4
   60   6   5   0 41.293  82.586   0.369    3.11   24       23.9        3.0
   61   6   5   1 41.705  83.41    0.372    3.07   48       54.4       30.9
   62   7   3   2 41.705  83.41    0.372    3.07   48       55.4       32.1
   63   8   0   0 42.528  85.055   0.378    2.99    6      755.8      728.6
   64   6   5   2 42.938  85.876   0.381    2.96   48        2.1        0.0
   65   7   4   0 42.938  85.876   0.381    2.96   24        1.0        0.0
   66   8   1   0 42.938  85.876   0.381    2.96   24        5.0        0.1
   67   1   1   8 43.348  86.695   0.384    2.93   24       77.2       29.8
   68   5   5   4 43.348  86.695   0.384    2.93   24       21.7        2.4
   69   7   4   1 43.348  86.695   0.384    2.93   48       50.0       25.0
   70   4   4   6 44.167  88.333   0.389    2.87   24       74.0       26.8
   71   8   2   0 44.167  88.333   0.389    2.87   24       72.2       25.6
   72   7   4   2 44.576  89.152   0.392    2.85   48       16.8        2.7
   73   8   2   1 44.576  89.152   0.392    2.85   48       26.7        6.9
   74   6   5   3 44.985  89.97    0.395    2.83   48       41.4       16.6


  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   6.863  13.725  7.48557      261.5      3.3      3.3     5.6
    2   2   0   0   9.729  19.458  5.2931       124.7      1.6      1.6     5.6
    3   1   1   2  11.945  23.889  4.3218       272.1      3.4      3.4     5.6
    4   3   1   0  15.497  30.994  3.34765      146.6      1.8      1.8     5.6
    5   2   2   2  17.019  34.038  3.05597     8006.7    100.0    100.0     5.7
    6   3   2   1  18.43   36.86   2.82928      194.4      2.4      2.4     5.7
    7   4   0   0  19.753  39.507  2.64655     1358.9     17.0     16.9     5.7
    8   3   3   0  21.006  42.013  2.49519      118.4      1.5      1.5     5.7
    9   4   2   0  22.201  44.403  2.36715      104.3      1.3      1.3     5.7
   10   3   3   2  23.348  46.695  2.25699       98.4      1.2      1.2     5.7
   11   4   3   1  25.52   51.041  2.07612      164.6      2.1      2.0     5.8
   12   4   4   0  28.553  57.105  1.87139     5250.2     65.6     63.9     5.8
   13   2   2   6  34.088  68.176  1.59593     2774.4     34.7     33.2     5.9
   14   6   3   1  34.964  69.928  1.56085       98.4      1.2      1.2     5.9
   15   4   4   4  35.83   71.66   1.52799      343.6      4.3      4.1     5.9
   16   8   0   0  42.528  85.055  1.32328      728.6      9.1      8.4     6.1

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)