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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SILICATE_CHLORIDE_CA_AL

1, td-garnet

Ca(12)Al(10.6)Si(3.4)O(32)Cl(5.4)


Cubic  I 4(-)3d  Z = 2

R =0.056          NR =225

2 .4 .1993

Ref.Str.:

         Feng Q.L., Glasser F.P., Alan-Homie R., Lachowski E.E. (1988)

         * Acta Cryst., C44, 589-592

Reserv:

         D.T.N.

                   Initial data from BDM-file 

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

             a =  11.981    alpha =   90.0 
             b =  11.981    beta  =   90.0 
             c =  11.981    gamma =   90.0 

    Unit cell volume (cub. angs.) =  1719.8 

    Molar volume ( cub.cm/mol.) =   517.95

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

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

   1 0.2     0.2818  0.1022   0.62   O     = 1.00
   2 0.1059  0.0     0.25     0.58   Ca    = 1.00
   3 0.3151  0.3151  0.3151   1.25   O     = 1.00
   4 0.239   0.239   0.239    0.29   Al    = 0.76, Si    = 0.24
   5 0.375   0.0     0.25     0.37   Al    = 0.76, Si    = 0.24
   6 0.875   0.0     0.25     1.8    Cl    = 0.9 , Cl    = 0.0 


  Co-ordinates for all atomic positions :

   No       NoP      x/a        y/b       z/c 

     1       1     0.2        0.2818     0.1022
     2       2     0.1059     0.0        0.25  
     3       3     0.3151     0.3151     0.3151
     4       4     0.239      0.239      0.239 
     5       5     0.375      0.0        0.25  
     6       6     0.875      0.0        0.25  
     7       1     0.3        0.7182     0.6022
     8       2     0.3941     0.0        0.75  
     9       3     0.1849     0.6849     0.8151
    10       4     0.261      0.761      0.739 
    11       5     0.125      0.0        0.75  
    12       6     0.625      0.0        0.75  
    13       1     0.8        0.7818     0.3978
    14       2     0.8941     0.5        0.25  
    15       3     0.6849     0.8151     0.1849
    16       4     0.761      0.739      0.261 
    17       5     0.625      0.5        0.25  
    18       6     0.125      0.5        0.25  
    19       1     0.7        0.2182     0.8978
    20       2     0.6059     0.5        0.75  
    21       3     0.8151     0.1849     0.6849
    22       4     0.739      0.261      0.761 
    23       5     0.875      0.5        0.75  
    24       6     0.375      0.5        0.75  
    25       1     0.8        0.2182     0.1022
    26       3     0.6849     0.1849     0.3151
    27       4     0.761      0.261      0.239 
    28       1     0.7        0.7818     0.6022
    29       3     0.8151     0.8151     0.8151
    30       4     0.739      0.739      0.739 
    31       1     0.2        0.7182     0.3978
    32       3     0.3151     0.6849     0.1849
    33       4     0.239      0.761      0.261 
    34       1     0.3        0.2818     0.8978
    35       3     0.1849     0.3151     0.6849
    36       4     0.261      0.239      0.761 
    37       1     0.5318     0.45       0.3522
    38       2     0.25       0.3559     0.5   
    39       3     0.5651     0.5651     0.5651
    40       4     0.489      0.489      0.489 
    41       5     0.25       0.625      0.5   
    42       6     0.25       0.125      0.5   
    43       1     0.9682     0.55       0.8522
    44       2     0.25       0.6441     0.0   
    45       3     0.9349     0.4349     0.0651
    46       4     0.011      0.511      0.989 
    47       5     0.25       0.375      0.0   
    48       6     0.25       0.875      0.0   
    49       1     0.0318     0.05       0.6478
    50       2     0.75       0.1441     0.5   
    51       3     0.0651     0.9349     0.4349
    52       4     0.989      0.011      0.511 
    53       5     0.75       0.875      0.5   
    54       6     0.75       0.375      0.5   
    55       1     0.4682     0.95       0.1478
    56       2     0.75       0.8559     0.0   
    57       3     0.4349     0.0651     0.9349
    58       4     0.511      0.989      0.011 
    59       5     0.75       0.125      0.0   
    60       6     0.75       0.625      0.0   
    61       1     0.4682     0.05       0.3522
    62       3     0.4349     0.9349     0.5651
    63       4     0.511      0.011      0.489 
    64       1     0.0318     0.95       0.8522
    65       3     0.0651     0.0651     0.0651
    66       4     0.989      0.989      0.989 
    67       1     0.9682     0.45       0.6478
    68       3     0.9349     0.5651     0.4349
    69       4     0.011      0.489      0.511 
    70       1     0.5318     0.55       0.1478
    71       3     0.5651     0.4349     0.9349
    72       4     0.489      0.511      0.011 
    73       1     0.2818     0.1022     0.2   
    74       1     0.1022     0.2        0.2818
    75       2     0.0        0.25       0.1059
    76       2     0.25       0.1059     0.0   
    77       5     0.0        0.25       0.375 
    78       6     0.0        0.25       0.875 
    79       1     0.7182     0.6022     0.3   
    80       1     0.6022     0.3        0.7182
    81       2     0.0        0.75       0.3941
    82       2     0.75       0.3941     0.0   
    83       5     0.0        0.75       0.125 
    84       6     0.0        0.75       0.625 
    85       1     0.7818     0.3978     0.8   
    86       1     0.3978     0.8        0.7818
    87       2     0.5        0.25       0.8941
    88       2     0.25       0.8941     0.5   
    89       5     0.5        0.25       0.625 
    90       6     0.5        0.25       0.125 
    91       1     0.2182     0.8978     0.7   
    92       1     0.8978     0.7        0.2182
    93       2     0.5        0.75       0.6059
    94       2     0.75       0.6059     0.5   
    95       5     0.5        0.75       0.875 
    96       6     0.5        0.75       0.375 
    97       1     0.2182     0.1022     0.8   
    98       1     0.1022     0.8        0.2182
    99       1     0.7818     0.6022     0.7   
   100       1     0.6022     0.7        0.7818
   101       1     0.7182     0.3978     0.2   
   102       1     0.3978     0.2        0.7182
   103       1     0.2818     0.8978     0.3   
   104       1     0.8978     0.3        0.2818
   105       1     0.45       0.3522     0.5318
   106       1     0.3522     0.5318     0.45  
   107       2     0.3559     0.5        0.25  
   108       2     0.5        0.25       0.3559
   109       1     0.55       0.8522     0.9682
   110       1     0.8522     0.9682     0.55  
   111       2     0.6441     0.0        0.25  
   112       2     0.0        0.25       0.6441
   113       1     0.05       0.6478     0.0318
   114       1     0.6478     0.0318     0.05  
   115       2     0.1441     0.5        0.75  
   116       2     0.5        0.75       0.1441
   117       1     0.95       0.1478     0.4682
   118       1     0.1478     0.4682     0.95  
   119       2     0.8559     0.0        0.75  
   120       2     0.0        0.75       0.8559
   121       1     0.05       0.3522     0.4682
   122       1     0.3522     0.4682     0.05  
   123       1     0.95       0.8522     0.0318
   124       1     0.8522     0.0318     0.95  
   125       1     0.45       0.6478     0.9682
   126       1     0.6478     0.9682     0.45  
   127       1     0.55       0.1478     0.5318
   128       1     0.1478     0.5318     0.55  


X-ray density (g/cm cub.)   =      3.02

MU (1/cm) =     238.927    Mass attenuation coefficient (cm**2/g) =     79.043

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

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

    1    O                   3.804       11
                                                 2.927        3
                                                 3.2829       6
                                                 2.7263       1
                                                 3.6946       3
                                                 3.0904       3
                                                 2.6389       1
                                                 2.6389       1
                                                 3.6465       6
                                                 3.6247       6
                                                 2.9502       1
                                                 2.9502       1
    2    Ca                  3.42         7
                                                 2.7664       6
                                                 2.3989       3
                                                 2.3989       3
                                                 2.5099       1
                                                 2.4267       1
                                                 2.4267       1
                                                 2.5099       1
    3    O                   3.804       12
                                                 2.927        1
                                                 3.2716       6
                                                 3.0904       1
                                                 3.2716       6
                                                 3.6946       1
                                                 2.927        1
                                                 2.927        1
                                                 3.2716       6
                                                 3.0904       1
                                                 3.0904       1
                                                 3.6946       1
                                                 3.6946       1
    4   Al   ,Si             2.856        4
                                                 1.7798       1
                                                 1.5792       3
                                                 1.7798       1
                                                 1.7798       1
    5   Al   ,Si             2.856        4
                                                 1.7621       1
                                                 1.7621       1
                                                 1.7621       1
                                                 1.7621       1
    6   Cl   ,Cl             4.344       16
                                                 3.2829       1
                                                 3.2716       3
                                                 3.2829       1
                                                 3.2716       3
                                                 3.2716       3
                                                 3.2716       3
                                                 3.6465       1
                                                 3.6247       1
                                                 3.6465       1
                                                 3.6247       1
                                                 3.6247       1
                                                 3.6465       1
                                                 3.2829       1
                                                 3.2829       1
                                                 3.6247       1
                                                 3.6465       1

  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  5.217  10.433   0.059  238.95   12        0.0        0.0
    2   2   0   0  7.388  14.776   0.083  118.01    6        0.0        0.0
    3   1   1   2  9.061  18.122   0.102   77.71   24       75.3      357.4
    4   2   2   0 10.477  20.954   0.118   57.57   12       22.4       11.7
    5   3   1   0 11.73   23.461   0.132   45.5    24       11.1        4.6
    6   3   2   1 13.919  27.839   0.156   31.72   48       57.8      171.7
    7   4   0   0 14.902  29.804   0.167   27.43    6      386.9      832.9
    8   3   3   0 15.829  31.658   0.177   24.09   12        0.0        0.0
    9   4   2   0 16.71   33.419   0.187   21.43   24      372.4     2411.8
   10   3   3   2 17.551  35.102   0.196   19.25   24       76.0       90.3
   11   2   2   4 18.359  36.717   0.204   17.45   24      261.4      967.4
   12   4   3   1 19.137  38.274   0.213   15.92   48       51.0       67.1
   13   5   1   0 19.137  38.274   0.213   15.92   24      147.2      279.8
   14   5   2   1 20.618  41.237   0.229   13.49   48      116.7      298.0
   15   4   4   0 21.327  42.654   0.236   12.51   12       72.7       26.8
   16   5   3   0 22.017  44.034   0.243   11.64   24      107.5      109.3
   17   6   0   0 22.69   45.381   0.25    10.88    6        0.0        0.0
   18   1   1   6 23.348  46.697   0.257   10.2    24       63.3       33.2
   19   5   3   2 23.348  46.697   0.257   10.2    48       99.1      162.7
   20   6   2   0 23.993  47.985   0.264    9.59   24       34.5        9.2
   21   5   4   1 24.624  49.248   0.27     9.04   48       29.6       12.9
   22   6   3   1 25.852  51.704   0.283    8.09   48       60.1       47.4
   23   4   4   4 26.451  52.901   0.289    7.68    8      361.9      272.0
   24   5   4   3 27.04   54.08    0.295    7.3    48       48.4       27.7
   25   5   5   0 27.04   54.08    0.295    7.3    12        0.0        0.0
   26   7   1   0 27.04   54.08    0.295    7.3    24      104.5       64.7
   27   6   4   0 27.621  55.241   0.301    6.96   24      334.1      630.3
   28   3   3   6 28.193  56.386   0.307    6.64   24       51.4       14.2
   29   5   5   2 28.193  56.386   0.307    6.64   24      107.3       62.1
   30   7   2   1 28.193  56.386   0.307    6.64   48       13.6        2.0
   31   6   4   2 28.758  57.517   0.312    6.35   48      273.5      770.6
   32   7   3   0 29.316  58.633   0.318    6.08   24        8.5        0.4
   33   6   5   1 30.413  60.827   0.329    5.6    48       56.3       28.8
   34   7   3   2 30.413  60.827   0.329    5.6    48       38.1       13.2
   35   8   0   0 30.953  61.906   0.334    5.39    6      419.6      192.3
   36   7   4   1 31.487  62.975   0.339    5.19   48      120.2      121.6
   37   8   2   0 32.017  64.033   0.344    5.0    24        8.9        0.3
   38   6   5   3 32.541  65.082   0.349    4.83   48       40.2       12.7
   39   2   2   8 33.061  66.122   0.354    4.67   24       46.8        8.3
   40   6   6   0 33.061  66.122   0.354    4.67   12       13.3        0.3
   41   7   4   3 33.577  67.154   0.359    4.52   48       91.0       60.7
   42   7   5   0 33.577  67.154   0.359    4.52   24      114.8       48.3
   43   8   3   1 33.577  67.154   0.359    4.52   48       10.8        0.8
   44   7   5   2 34.598  69.195   0.369    4.24   48       91.7       57.9
   45   8   4   0 35.103  70.205   0.373    4.12   24      215.2      154.8
   46   9   1   0 35.605  71.209   0.378    4.01   24       80.0       20.8
   47   8   4   2 36.103  72.207   0.382    3.9    48      202.3      258.9
   48   5   5   6 36.599  73.199   0.387    3.8    24       82.5       21.0
   49   7   6   1 36.599  73.199   0.387    3.8    48       27.5        4.6
   50   9   2   1 36.599  73.199   0.387    3.8    48       20.5        2.6
   51   6   6   4 37.093  74.186   0.391    3.7    24      212.5      135.7
   52   7   5   4 37.584  75.168   0.396    3.61   48       70.4       29.1
   53   8   5   1 37.584  75.168   0.396    3.61   48       41.4       10.1
   54   9   3   0 37.584  75.168   0.396    3.61   24       81.2       19.4
   55   7   6   3 38.56   77.12    0.405    3.45   48        9.3        0.5
   56   9   3   2 38.56   77.12    0.405    3.45   48       51.3       14.8
   57   4   4   8 39.045  78.09    0.409    3.38   24       30.4        2.5
   58   7   7   0 39.528  79.056   0.413    3.32   12        0.0        0.0
   59   8   5   3 39.528  79.056   0.413    3.32   48       64.6       22.5
   60   9   4   1 39.528  79.056   0.413    3.32   48      103.6       57.7
   61   8   6   0 40.01   80.02    0.417    3.25   24       30.4        2.4
   62  10   0   0 40.01   80.02    0.417    3.25    6        0.0        0.0
   63   1   1  10 40.49   80.98    0.421    3.2    24       59.3        9.1
   64   7   7   2 40.49   80.98    0.421    3.2    24       37.9        3.7
   65   8   6   2 40.969  81.938   0.426    3.14   48       30.4        4.7
   66  10   2   0 40.969  81.938   0.426    3.14   24      104.4       27.8
   67   9   4   3 41.447  82.894   0.43     3.09   48       52.0       13.6
   68   9   5   0 41.447  82.894   0.43     3.09   24       59.2        8.8
   69   7   6   5 42.4    84.799   0.438    3.0    48       74.5       27.0
   70   9   5   2 42.4    84.799   0.438    3.0    48       34.0        5.6
   71  10   3   1 42.4    84.799   0.438    3.0    48       47.7       11.1
   72   8   7   1 43.35   86.699   0.446    2.93   48       54.7       14.2
   73   8   6   4 43.824  87.648   0.449    2.9    48      175.9      145.4
   74  10   4   0 43.824  87.648   0.449    2.9    24      227.1      121.1
   75   3   3  10 44.298  88.596   0.453    2.87   24       76.3       13.5
   76   9   6   1 44.298  88.596   0.453    2.87   48       38.8        7.0
   77  10   4   2 44.772  89.543   0.457    2.84   48      183.0      154.4


  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   2   9.061  18.122  4.89122      357.4     14.8     15.0     5.6
    2   3   2   1  13.919  27.839  3.20206      171.7      7.1      7.2     5.6
    3   4   0   0  14.902  29.804  2.99525      832.9     34.5     34.6     5.6
    4   4   2   0  16.71   33.419  2.67903     2411.8    100.0    100.0     5.7
    5   3   3   2  17.551  35.102  2.55436       90.3      3.7      3.7     5.7
    6   2   2   4  18.359  36.717  2.44561      967.4     40.1     40.0     5.7
    7   5   1   0  19.137  38.274  2.34967      347.0     14.4     14.3     5.7
    8   5   2   1  20.618  41.237  2.18742      298.0     12.4     12.3     5.7
    9   4   4   0  21.327  42.654  2.11796       26.8      1.1      1.1     5.7
   10   5   3   0  22.017  44.034  2.05472      109.3      4.5      4.5     5.7
   11   5   3   2  23.348  46.697  1.94358      195.8      8.1      8.0     5.7
   12   6   3   1  25.852  51.704  1.7665        47.4      2.0      1.9     5.8
   13   4   4   4  26.451  52.901  1.72931      272.0     11.3     11.0     5.8
   14   7   1   0  27.04   54.08   1.69437       92.5      3.8      3.8     5.8
   15   6   4   0  27.621  55.241  1.66147      630.3     26.1     25.5     5.8
   16   5   5   2  28.193  56.386  1.63041       78.3      3.2      3.2     5.8
   17   6   4   2  28.758  57.517  1.60103      770.6     32.0     31.1     5.8
   18   6   5   1  30.413  60.827  1.52159       42.0      1.7      1.7     5.8
   19   8   0   0  30.953  61.906  1.49762      192.3      8.0      7.7     5.8
   20   7   4   1  31.487  62.975  1.47476      121.6      5.0      4.9     5.9
   21   7   4   3  33.577  67.154  1.39276      109.9      4.6      4.4     5.9
   22   7   5   2  34.598  69.195  1.35658       57.9      2.4      2.3     5.9
   23   8   4   0  35.103  70.205  1.33952      154.8      6.4      6.1     5.9
   24   8   4   2  36.103  72.207  1.30723      258.9     10.7     10.2     5.9
   25   5   5   6  36.599  73.199  1.29194       28.2      1.2      1.1     6.0
   26   6   6   4  37.093  74.186  1.27718      135.7      5.6      5.3     6.0
   27   7   5   4  37.584  75.168  1.26291       58.5      2.4      2.3     6.0
   28   9   4   1  39.528  79.056  1.21026       80.2      3.3      3.1     6.0
   29  10   2   0  40.969  81.938  1.17483       32.5      1.3      1.3     6.1
   30   7   6   5  42.4    84.799  1.14234       43.8      1.8      1.7     6.1
   31   8   6   4  43.824  87.648  1.11241      266.5     11.1     10.1     6.2
   32  10   4   2  44.772  89.543  1.09371      154.4      6.4      5.8     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)