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

                            ***

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

2, analogue

Cu(2)GeSe(3)


Monoclinic  C c  Z = 4

R =0.027          NR =1824

8 .12 .25

Ref.Str.:

         A. Dugarte-Dugarte, N. Ramirez Pineda, L. Nieves, J.A. Henao,

         G. Diaz de Delgado, J.M. Delgado (2021)

         * Acta Cryst., B77, 158-167, doi.org/10.1107/S2052520620016571

         R: N.A.D.

                   Initial data from BDM-file 

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

             a =   6.7703   alpha =   90.0 
             b =  11.8624   beta  =  108.51
             c =   6.7705   gamma =   90.0 

    Unit cell volume (cub. angs.) =   515.62

    Molar volume ( cub.cm/mol.) =    77.64

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

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

   1 0.9999  0.9134  0.4999   0.0    Cu    = 1.00
   2 0.5149  0.7532  0.5046   0.0    Cu    = 1.00
   3 0.5282  0.0859  0.523    0.0    Ge    = 1.00
   4 0.3865  0.9189  0.64     0.0    Se    = 1.00
   5 0.3888  0.2456  0.6317   0.0    Se    = 1.00
   6 0.8921  0.0843  0.6247   0.0    Se    = 1.00


  Co-ordinates for all atomic positions :

   No       NoP      x/a        y/b       z/c 

     1       1     0.9999     0.9134     0.4999
     2       2     0.5149     0.7532     0.5046
     3       3     0.5282     0.0859     0.523 
     4       4     0.3865     0.9189     0.64  
     5       5     0.3888     0.2456     0.6317
     6       6     0.8921     0.0843     0.6247
     7       1     0.0        0.0866     0.0   
     8       2     0.5149     0.2468     0.0046
     9       3     0.5282     0.9141     0.023 
    10       4     0.3865     0.0811     0.14  
    11       5     0.3888     0.7544     0.1317
    12       6     0.8921     0.9158     0.1247
    13       1     0.4999     0.5866     0.0   
    14       2     0.0149     0.7468     0.0046
    15       3     0.0282     0.4141     0.023 
    16       4     0.8865     0.5811     0.14  
    17       5     0.8888     0.2544     0.1317
    18       6     0.3921     0.4157     0.1247
    19       1     0.5        0.4134     0.5   
    20       2     0.0149     0.2532     0.5046
    21       3     0.0282     0.5859     0.523 
    22       4     0.8865     0.4189     0.64  
    23       5     0.8888     0.7456     0.6317
    24       6     0.3921     0.5842     0.6247


X-ray density (g/cm cub.)   =      5.62

MU (1/cm) =     560.62     Mass attenuation coefficient (cm**2/g) =     99.72 

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

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

    1    Cu                  3.492        4
                                                 2.4856       4
                                                 2.3964       6
                                                 2.4106       6
                                                 2.3984       5
    2    Cu                  3.492        4
                                                 2.4421       4
                                                 2.3948       5
                                                 2.4029       5
                                                 2.4079       6
    3    Ge                  3.096        4
                                                 2.4398       4
                                                 2.3371       5
                                                 2.3388       6
                                                 2.4634       4
    4    Se                  4.632       12
                                                 3.8757       5
                                                 3.9753       6
                                                 3.8522       6
                                                 3.8938       4
                                                 3.8938       4
                                                 3.8545       5
                                                 3.9603       5
                                                 3.9186       6
                                                 3.9952       6
                                                 3.9895       5
                                                 3.9325       5
                                                 3.9716       6
    5    Se                  4.632       12
                                                 3.8757       4
                                                 3.9219       6
                                                 3.8561       6
                                                 3.9603       4
                                                 3.8545       4
                                                 3.9564       5
                                                 3.9564       5
                                                 3.8945       6
                                                 3.9887       6
                                                 3.9325       4
                                                 3.9895       4
                                                 4.0179       6
    6    Se                  4.632       12
                                                 3.8522       4
                                                 3.9753       4
                                                 3.8561       5
                                                 3.9219       5
                                                 3.9952       4
                                                 3.9186       4
                                                 3.9313       6
                                                 3.9313       6
                                                 3.9887       5
                                                 3.8945       5
                                                 3.9716       4
                                                 4.0179       5

  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  8.674  17.347   0.084   85.0     2        0.9        0.0
    2   1   1   0  9.115  18.23    0.089   76.76    4       15.4       27.4
    3   1   1  -1 10.334  20.669   0.1     59.24    4        9.9        8.7
    4   0   2   1 11.848  23.695   0.115   44.56    4       20.0       26.8
    5   1   1   1 13.792  27.584   0.133   32.35    4        6.6        2.1
    6   1   3   0 15.407  30.814   0.149   25.54    4        7.3        2.0
    7   0   0   2 16.179  32.358   0.156   22.98    2      475.8     3913.9
    8   2   0   0 16.18   32.359   0.156   22.98    2      468.4     3793.4
    9   1   3  -1 16.182  32.364   0.156   22.97    4      467.8     7565.1
   10   1   1  -2 16.227  32.453   0.156   22.83    4       14.6        7.3
   11   0   4   0 17.554  35.109   0.169   19.25    2       12.0        2.1
   12   2   2  -1 17.966  35.933   0.172   18.29    4        4.0        0.4
   13   0   2   2 18.471  36.943   0.177   17.21    4       12.8        4.2
   14   2   2   0 18.472  36.944   0.177   17.21    4        6.8        1.2
   15   1   3   1 18.655  37.31    0.179   16.84    4       25.5       16.5
   16   2   0  -2 18.999  37.998   0.182   16.18    2       21.7        5.7
   17   0   4   1 19.404  38.809   0.186   15.44    4        7.9        1.4
   18   1   3  -2 20.581  41.161   0.197   13.54    4        4.1        0.3
   19   1   1   2 20.911  41.822   0.2     13.07    4       53.9       57.2
   20   2   2  -2 21.025  42.051   0.201   12.91    4       11.1        2.4
   21   2   2   1 22.338  44.675   0.212   11.27    4       36.5       22.6
   22   1   5   0 23.699  47.398   0.225    9.86    4       38.9       22.4
   23   1   1  -3 23.797  47.594   0.226    9.77    4       14.0        2.9
   24   3   1  -1 23.798  47.595   0.226    9.77    4        5.2        0.4
   25   2   4  -1 23.841  47.681   0.226    9.73    4       35.4       18.3
   26   0   4   2 24.244  48.488   0.23     9.36    4       12.3        2.1
   27   2   4   0 24.244  48.488   0.23     9.36    4       11.3        1.8
   28   1   5  -1 24.246  48.492   0.23     9.36    4       15.0        3.2
   29   1   3   2 24.569  49.137   0.232    9.08    4        7.5        0.8
   30   3   1   0 25.133  50.266   0.237    8.63    4       48.5       30.5
   31   3   1  -2 25.406  50.813   0.24     8.42    4       45.3       26.0
   32   1   5   1 26.081  52.162   0.246    7.93    4       21.3        5.4
   33   2   4  -2 26.346  52.692   0.248    7.75    4       18.1        3.8
   34   0   2   3 26.381  52.762   0.248    7.72    4       59.7       41.4
   35   2   2  -3 26.645  53.291   0.251    7.55    4       40.7       18.8
   36   2   0   2 26.892  53.785   0.253    7.39    2      576.0     1845.2
   37   0   6   0 26.899  53.798   0.253    7.39    2      582.7     1887.4
   38   1   3  -3 27.155  54.309   0.255    7.23    4      578.9     3646.6
   39   3   3  -1 27.155  54.311   0.255    7.23    4      579.0     3648.2
   40   2   4   1 27.463  54.925   0.258    7.05    4       48.0       24.5
   41   1   5  -2 27.593  55.186   0.259    6.97    4       21.5        4.8
   42   0   6   1 28.254  56.508   0.265    6.61    4        5.7        0.3
   43   3   3   0 28.376  56.753   0.266    6.54    4        3.1        0.1
   44   2   2   2 28.476  56.952   0.267    6.49    4       13.1        1.7
   45   3   3  -2 28.628  57.256   0.268    6.41    4        4.0        0.2
   46   1   1   3 29.116  58.233   0.272    6.17    4       12.6        1.5
   47   3   1   1 29.117  58.234   0.272    6.17    4        5.2        0.2
   48   3   1  -3 29.611  59.222   0.276    5.94    4       11.5        1.2
   49   1   5   2 30.908  61.815   0.287    5.4     4       50.5       20.7
   50   0   4   3 31.026  62.051   0.288    5.36    4       49.3       19.6
   51   2   4  -3 31.265  62.529   0.29     5.27    4       36.6       10.6
   52   2   6  -1 31.762  63.524   0.294    5.09    4       12.9        1.3
   53   1   3   3 32.091  64.183   0.297    4.98    4      377.1     1064.3
   54   3   3   1 32.092  64.184   0.297    4.97    4      386.3     1117.0
   55   0   6   2 32.096  64.192   0.297    4.97    4      391.8     1148.6
   56   2   6   0 32.096  64.193   0.297    4.97    4      387.1     1121.0
   57   1   1  -4 32.352  64.704   0.299    4.89    4       18.1        2.4
   58   2   0  -4 32.557  65.115   0.301    4.82    2      375.5      511.5
   59   4   0  -2 32.558  65.117   0.301    4.82    2      380.4      524.9
   60   3   3  -3 32.559  65.119   0.301    4.82    4      392.7     1118.9
   61   2   4   2 32.933  65.865   0.304    4.71    4        7.4        0.4
   62   1   7   0 33.086  66.172   0.305    4.66    4       27.6        5.3
   63   1   5  -3 33.165  66.33    0.306    4.64    4       18.7        2.5
   64   3   5  -1 33.166  66.331   0.306    4.64    4       14.3        1.4
   65   4   2  -1 33.425  66.85    0.308    4.56    4       42.6       12.5
   66   1   7  -1 33.528  67.057   0.309    4.53    4       19.2        2.5
   67   0   0   4 33.868  67.736   0.312    4.43    2       17.0        1.0
   68   4   0   0 33.869  67.738   0.312    4.43    2       17.5        1.0
   69   2   6  -2 33.874  67.749   0.312    4.43    4        8.7        0.5
   70   2   2  -4 33.978  67.956   0.312    4.4     4       17.8        2.1
   71   4   2  -2 33.979  67.958   0.312    4.4     4       13.0        1.1
   72   3   5   0 34.256  68.511   0.315    4.33    4       60.5       23.8
   73   3   5  -2 34.482  68.964   0.316    4.27    4       28.6        5.3
   74   2   6   1 34.841  69.682   0.319    4.18    4        9.4        0.6
   75   1   7   1 35.046  70.092   0.321    4.13    4       19.6        2.4
   76   1   3  -4 35.174  70.347   0.322    4.1     4        1.9        0.0
   77   3   1   2 35.182  70.365   0.322    4.1     4       62.1       23.8
   78   0   2   4 35.263  70.525   0.323    4.08    4       16.1        1.6
   79   4   2   0 35.264  70.527   0.323    4.08    4       14.0        1.2
   80   3   1  -4 35.852  71.704   0.327    3.95    4       38.9        9.0
   81   2   2   3 36.213  72.426   0.33     3.87    4       51.7       15.6
   82   1   7  -2 36.331  72.662   0.331    3.85    4       21.3        2.6
   83   4   2  -3 36.876  73.752   0.335    3.74    4       54.3       16.6
   84   0   8   0 37.101  74.202   0.337    3.7     2       16.4        0.8
   85   4   4  -1 37.563  75.126   0.341    3.62    4       17.5        1.7
   86   1   5   3 37.656  75.312   0.342    3.6     4       17.7        1.7
   87   3   5   1 37.656  75.313   0.342    3.6     4       21.4        2.5
   88   3   3   2 37.907  75.814   0.343    3.56    4        5.5        0.2
   89   0   6   3 38.02   76.039   0.344    3.54    4       10.1        0.5
   90   2   4  -4 38.09   76.181   0.345    3.53    4       21.8        2.5
   91   4   4  -2 38.091  76.182   0.345    3.53    4       14.6        1.1
   92   3   5  -3 38.092  76.184   0.345    3.53    4       21.7        2.5
   93   2   6  -3 38.237  76.475   0.346    3.51    4       11.7        0.7
   94   0   8   1 38.251  76.501   0.346    3.5     4       25.6        3.5
   95   1   1   4 38.349  76.698   0.347    3.49    4       45.9       11.1
   96   3   3  -4 38.559  77.117   0.348    3.46    4        5.6        0.2
   97   1   7   2 39.249  78.498   0.354    3.35    4       56.9       16.4
   98   0   4   4 39.321  78.642   0.354    3.34    4       16.1        1.3
   99   4   4   0 39.322  78.644   0.354    3.34    4        6.7        0.2
  100   4   2   1 39.351  78.701   0.354    3.34    4       55.4       15.4
  101   2   6   2 39.773  79.545   0.358    3.28    4      499.0     1229.9
  102   2   4   3 40.238  80.475   0.361    3.23    4       31.9        4.9
  103   1   5  -4 40.56   81.119   0.363    3.19    4       25.7        3.2
  104   4   0  -4 40.624  81.249   0.364    3.18    2      499.3      596.4
  105   4   4  -3 40.879  81.759   0.366    3.15    4       41.9        8.3
  106   1   3   4 41.002  82.004   0.367    3.14    4        5.3        0.1
  107   1   7  -3 41.307  82.614   0.369    3.11    4       15.5        1.1
  108   3   7  -1 41.307  82.615   0.369    3.11    4       11.8        0.6
  109   2   8  -1 41.339  82.679   0.369    3.1     4       30.2        4.3
  110   0   8   2 41.642  83.283   0.371    3.07    4       27.9        3.6
  111   2   8   0 41.642  83.284   0.371    3.07    4       24.5        2.8
  112   5   1  -2 41.862  83.725   0.373    3.05    4       32.9        5.0
  113   4   2  -4 41.939  83.877   0.374    3.04    4       18.9        1.6
  114   1   1  -5 42.057  84.113   0.374    3.03    4       14.7        1.0
  115   5   1  -1 42.058  84.117   0.374    3.03    4        6.7        0.2
  116   3   7   0 42.32   84.64    0.376    3.01    4       26.8        3.3
  117   3   7  -2 42.532  85.064   0.378    2.99    4       48.3       10.5
  118   2   2  -5 42.843  85.685   0.38     2.97    4       35.2        5.5
  119   3   1   3 43.051  86.102   0.382    2.95    4       10.3        0.5
  120   3   5   2 43.19   86.381   0.383    2.94    4       77.3       26.4
  121   2   8  -2 43.272  86.544   0.383    2.93    4       28.6        3.6
  122   4   4   1 43.295  86.59    0.383    2.93    4       63.0       17.5
  123   3   5  -4 43.825  87.649   0.387    2.9     4       38.9        6.6
  124   1   9   0 43.851  87.701   0.387    2.89    4       15.3        1.0
  125   3   1  -5 43.897  87.794   0.388    2.89    4       18.7        1.5
  126   5   1  -3 43.898  87.796   0.388    2.89    4       14.0        0.9
  127   4   6  -1 44.162  88.323   0.389    2.87    4       11.0        0.5
  128   2   8   1 44.174  88.348   0.39     2.87    4       17.8        1.4
  129   2   0   4 44.244  88.489   0.39     2.87    2      338.7      247.6
  130   4   0   2 44.245  88.49    0.39     2.87    2      329.4      234.3
  131   1   9  -1 44.257  88.514   0.39     2.87    4      338.5      494.7
  132   5   3  -2 44.475  88.95    0.392    2.86    4        6.9        0.2
  133   5   1   0 44.482  88.965   0.392    2.86    4       69.9       21.0
  134   1   3  -5 44.668  89.336   0.393    2.85    4      344.2      507.1
  135   5   3  -1 44.67   89.339   0.393    2.85    4      337.4      487.3
  136   2   6  -4 44.672  89.345   0.393    2.85    4      329.9      466.0
  137   4   6  -2 44.673  89.346   0.393    2.85    4      333.8      476.9


  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   3  -1  16.182  32.364  3.20956    15272.3    100.0    100.0     5.6
    2   0   6   0  26.899  53.798  1.97707     3732.5     24.4     23.9     5.8
    3   3   3  -1  27.155  54.311  1.9598      7294.8     47.8     46.7     5.8
    4   2   6   0  32.096  64.193  1.68339     4450.9     29.1     28.1     5.9
    5   3   3  -3  32.559  65.119  1.66203     2155.3     14.1     13.6     5.9
    6   2   6   2  39.773  79.545  1.39816     1229.9      8.1      7.5     6.0
    7   4   0  -4  40.624  81.249  1.37377      596.4      3.9      3.6     6.1
    8   1   9  -1  44.257  88.514  1.28169      976.6      6.4      5.8     6.2
    9   1   3  -5  44.668  89.336  1.27235     1937.3     12.7     11.6     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)