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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TOLBACHITE

1

CuCl(2)


Monoclinic  C 2/m  Z = 2

R =0.035

27 .9 .1994

Ref.Str.:

         Burns P.C., Hawthorne F.C. (1993)

         * Amer. Mneral., 78, 187-189

Reserv:

         Rietveld method.   D.T.N.

                   Initial data from BDM-file 

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

             a =   6.9038   alpha =   90.0 
             b =   3.2995   beta  =  122.2 
             c =   6.824    gamma =   90.0 

    Unit cell volume (cub. angs.) =   131.54

    Molar volume ( cub.cm/mol.) =    39.62

  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      0.5    Cu    = 1.00
   2 0.5048  0.0     0.2294   1.0    Cl    = 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     0.5048     0.0        0.2294
     3       2     0.4952     0.0        0.7706
     4       1     0.5        0.5        0.0   
     5       2     0.0048     0.5        0.2294
     6       2     0.9952     0.5        0.7706


X-ray density (g/cm cub.)   =      3.39

MU (1/cm) =     274.544    Mass attenuation coefficient (cm**2/g) =     80.903

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

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

    1    Cu                  3.348        6
                                                 2.9635       2
                                                 2.9635       2
                                                 2.2623       2
                                                 2.2623       2
                                                 2.2623       2
                                                 2.2623       2
    2    Cl                  4.344       12
                                                 3.2995       2
                                                 3.2995       2
                                                 3.7289       2
                                                 3.096        2
                                                 3.8259       2
                                                 3.8259       2
                                                 3.8259       2
                                                 3.8259       2
                                                 3.8077       2
                                                 3.8077       2
                                                 3.6281       2
                                                 3.6281       2

  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   0   0   1  7.666  15.331   0.087  109.45    2       59.8     4530.9
    2   2   0  -1 12.901  25.801   0.145   37.26    2       59.1     1505.8
    3   2   0  -2 14.856  29.713   0.166   27.61    2        2.1        1.4
    4   2   0   0 15.29   30.579   0.171   25.96    2       98.7     2925.3
    5   1   1  -1 15.446  30.893   0.173   25.4     4       39.0      894.8
    6   0   0   2 15.473  30.946   0.173   25.3     2        2.4        1.7
    7   1   1   0 15.552  31.104   0.174   25.03    4        4.0        9.2
    8   1   1  -2 18.961  37.921   0.211   16.25    4       89.3     2997.2
    9   1   1   1 19.225  38.449   0.214   15.76    4       40.5      596.2
   10   2   0  -3 20.022  40.043   0.222   14.4     2       25.2      105.3
   11   2   0   1 20.689  41.377   0.229   13.39    2       47.2      344.0
   12   0   0   3 23.589  47.178   0.26     9.96    2       27.1       84.8
   13   3   1  -2 24.325  48.651   0.267    9.29    4       79.1     1343.9
   14   3   1  -1 24.542  49.084   0.27     9.11    4       33.3      232.8
   15   1   1  -3 24.789  49.578   0.272    8.9     4       57.5      681.4
   16   1   1   2 25.144  50.289   0.276    8.62    4       79.1     1247.5
   17   4   0  -2 26.521  53.041   0.29     7.63    2        6.0        3.1
   18   3   1  -3 26.738  53.475   0.292    7.49    4       57.6      574.6
   19   2   0  -4 26.871  53.742   0.293    7.41    2       71.4      436.6
   20   3   1   0 27.342  54.684   0.298    7.12    4        3.7        2.3
   21   4   0  -3 27.512  55.023   0.3      7.02    2       22.3       40.3
   22   2   0   2 27.672  55.344   0.301    6.93    2        4.4        1.5
   23   0   2   0 27.834  55.667   0.303    6.84    2       76.0      456.1
   24   4   0  -1 28.039  56.078   0.305    6.72    2       48.6      183.6
   25   0   2   1 29.051  58.102   0.315    6.21    4       43.6      273.0
   26   4   0  -4 30.85   61.7     0.333    5.43    2       65.1      265.4
   27   2   2  -1 31.167  62.335   0.336    5.3     4       44.1      238.6
   28   3   1  -4 31.354  62.708   0.338    5.23    4       10.3       12.9
   29   4   0   0 31.83   63.659   0.342    5.06    2       70.1      288.1
   30   1   1  -4 32.05   64.101   0.344    4.99    4        9.2        9.8
   31   2   2  -2 32.186  64.373   0.346    4.94    4        6.1        4.3
   32   0   0   4 32.247  64.493   0.346    4.92    2       65.6      244.6
   33   3   1   1 32.265  64.53    0.347    4.92    4       35.9      146.2
   34   2   2   0 32.427  64.854   0.348    4.86    4       69.6      543.9
   35   1   1   3 32.472  64.944   0.349    4.85    4       48.4      262.8
   36   0   2   2 32.531  65.061   0.349    4.83    4        5.6        3.5
   37   2   0  -5 34.875  69.75    0.371    4.17    2       55.7      149.8
   38   2   2  -3 35.379  70.758   0.376    4.06    4       22.0       45.3
   39   2   0   3 35.797  71.594   0.38     3.96    2       25.2       29.2
   40   2   2   1 35.839  71.677   0.38     3.95    4       37.1      125.9
   41   4   0  -5 36.159  72.317   0.383    3.89    2       55.8      140.0
   42   5   1  -3 37.353  74.705   0.394    3.66    4       49.3      205.5
   43   4   0   1 37.519  75.038   0.395    3.63    2       34.3       49.3
   44   5   1  -2 37.634  75.268   0.396    3.61    4       61.0      309.8
   45   3   1  -5 37.741  75.481   0.397    3.59    4       14.2       16.6
   46   0   2   3 37.947  75.894   0.399    3.55    4       22.7       42.4
   47   3   1   2 38.914  77.829   0.408    3.4     4       61.6      298.4
   48   5   1  -4 39.17   78.34    0.41     3.37    4       10.6        8.8
   49   5   1  -1 40.001  80.001   0.417    3.25    4       24.8       46.4
   50   4   2  -2 40.245  80.489   0.419    3.22    4        6.4        3.1
   51   2   2  -4 40.529  81.059   0.422    3.19    4       55.8      229.5
   52   1   1  -5 40.571  81.141   0.422    3.19    4       14.8       16.2
   53   4   2  -3 41.056  82.112   0.426    3.13    4       18.6       25.0
   54   1   1   4 41.065  82.131   0.426    3.13    4        7.6        4.2
   55   2   2   2 41.189  82.378   0.427    3.12    4        4.9        1.7
   56   4   2  -1 41.495  82.989   0.43     3.09    4       38.6      106.6
   57   0   0   5 41.832  83.665   0.433    3.05    2       48.1       81.8
   58   6   0  -3 42.05   84.1     0.435    3.03    2       16.8       10.0
   59   6   0  -4 42.746  85.492   0.441    2.97    2       51.8       92.3
   60   5   1  -5 43.014  86.029   0.443    2.95    4       11.8        9.5
   61   4   0  -6 43.216  86.432   0.444    2.94    2       14.2        6.9
   62   6   0  -2 43.4    86.801   0.446    2.92    2        6.7        1.5
   63   4   2  -4 43.909  87.818   0.45     2.89    4       51.8      179.4
   64   2   0  -6 44.151  88.302   0.452    2.88    2       12.8        5.4
   65   5   1   0 44.376  88.751   0.454    2.86    4        4.4        1.3
   66   4   2   0 44.779  89.559   0.457    2.84    4       56.0      206.1
   67   4   0   2 44.957  89.915   0.459    2.83    2        4.3        0.6


  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   0   0   1   7.666  15.331  5.77461     4530.9    100.0    100.0     5.6
    2   2   0  -1  12.901  25.801  3.45015     1505.8     33.2     33.0     5.6
    3   2   0   0  15.29   30.579  2.92107     2925.3     64.6     63.9     5.6
    4   1   1  -1  15.446  30.893  2.89212      896.4     19.8     19.6     5.6
    5   1   1  -2  18.961  37.921  2.37068     2997.2     66.2     65.0     5.7
    6   1   1   1  19.225  38.449  2.33934      596.2     13.2     12.9     5.7
    7   2   0  -3  20.022  40.043  2.24981      105.3      2.3      2.3     5.7
    8   2   0   1  20.689  41.377  2.1803       344.0      7.6      7.4     5.7
    9   0   0   3  23.589  47.178  1.92487       84.8      1.9      1.8     5.7
   10   3   1  -2  24.325  48.651  1.86998     1343.9     29.7     28.8     5.7
   11   3   1  -1  24.542  49.084  1.85449      232.8      5.1      5.0     5.7
   12   1   1  -3  24.789  49.578  1.83715      681.4     15.0     14.6     5.7
   13   1   1   2  25.144  50.289  1.81284     1247.5     27.5     26.7     5.8
   14   3   1  -3  26.738  53.475  1.71209      574.6     12.7     12.2     5.8
   15   2   0  -4  26.871  53.742  1.70423      436.6      9.6      9.3     5.8
   16   0   2   0  27.834  55.667  1.64975      456.1     10.1      9.7     5.8
   17   4   0  -1  28.039  56.078  1.63863      183.6      4.1      3.9     5.8
   18   0   2   1  29.051  58.102  1.58628      273.0      6.0      5.8     5.8
   19   4   0  -4  30.85   61.7    1.50212      265.4      5.9      5.6     5.8
   20   2   2  -1  31.167  62.335  1.48835      238.6      5.3      5.0     5.8
   21   4   0   0  31.83   63.659  1.46054      288.1      6.4      6.0     5.9
   22   0   0   4  32.247  64.493  1.44365      390.8      8.6      8.2     5.9
   23   2   2   0  32.427  64.854  1.43648      543.9     12.0     11.4     5.9
   24   1   1   3  32.472  64.944  1.43471      262.8      5.8      5.5     5.9
   25   2   0  -5  34.875  69.75   1.34714      149.8      3.3      3.1     5.9
   26   2   2   1  35.839  71.677  1.31558      125.9      2.8      2.6     5.9
   27   4   0  -5  36.159  72.317  1.30551      140.0      3.1      2.9     5.9
   28   5   1  -3  37.353  74.705  1.26958      205.5      4.5      4.2     6.0
   29   4   0   1  37.519  75.038  1.26478       49.3      1.1      1.0     6.0
   30   5   1  -2  37.634  75.268  1.26148      309.8      6.8      6.4     6.0
   31   3   1   2  38.914  77.829  1.22625      298.4      6.6      6.1     6.0
   32   5   1  -1  40.001  80.001  1.19833       46.4      1.0      0.9     6.0
   33   2   2  -4  40.529  81.059  1.18534      229.5      5.1      4.7     6.1
   34   4   2  -1  41.495  82.989  1.1626       106.6      2.4      2.2     6.1
   35   0   0   5  41.832  83.665  1.15492       81.8      1.8      1.7     6.1
   36   6   0  -4  42.746  85.492  1.13485       92.3      2.0      1.9     6.1
   37   4   2  -4  43.909  87.818  1.11069      179.4      4.0      3.6     6.2
   38   4   2   0  44.779  89.559  1.09356      206.1      4.5      4.1     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)