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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INDIALITE

5, t-beryl, syn, DF

Mg(2)Bi(0.168)Al(4)Si(5)O(18)


Hexagonal  P 6/mcc  Z = 2

P6/mcc

2 .11 .11

Ref.Str.:

         Schwartz K.B., Leong D.B., McConville R.L. (1994)

         * Phys. Chem. Minerals, 20, 563-574

         R: N.A.D.

                   Initial data from BDM-file 

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

             a =   9.785    alpha =   90.0 
             b =   9.785    beta  =   90.0 
             c =   9.3495   gamma =  120.0 

    Unit cell volume (cub. angs.) =   775.25

    Molar volume ( cub.cm/mol.) =   233.48

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

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

   1 0.5     0.5     0.25     0.0    Al    = 0.67, Si    = 0.33
   2 0.3717  0.2661  0.0      0.0    Si    = 0.67, Al    = 0.33
   3 0.3333  0.6667  0.25     0.0    Mg    = 1.00
   4 0.4855  0.3496  0.1443   0.0    O     = 1.00
   5 0.2303  0.3086  0.0      0.0    O     = 1.00
   6 0.0     0.0     0.25     0.0    Bi    = 0.11, Bi    = 0.0 
   7 0.0     0.0     0.0      0.0    Bi    = 0.06, Bi    = 0.0 


  Co-ordinates for all atomic positions :

   No       NoP      x/a        y/b       z/c 

     1       1     0.5        0.5        0.25  
     2       2     0.3717     0.2661     0.0   
     3       3     0.3333     0.6667     0.25  
     4       4     0.4855     0.3496     0.1443
     5       5     0.2303     0.3086     0.0   
     6       6     0.0        0.0        0.25  
     7       7     0.0        0.0        0.0   
     8       1     0.5        0.0        0.25  
     9       1     0.0        0.5        0.25  
    10       2     0.7339     0.1056     0.0   
    11       2     0.8944     0.6283     0.0   
    12       4     0.6504     0.1359     0.1443
    13       4     0.8641     0.5145     0.1443
    14       5     0.6914     0.9217     0.0   
    15       5     0.0783     0.7697     0.0   
    16       2     0.6283     0.7339     0.0   
    17       3     0.6667     0.3333     0.25  
    18       4     0.5145     0.6503     0.1443
    19       5     0.7697     0.6914     0.0   
    20       2     0.2661     0.8944     0.0   
    21       2     0.1056     0.3717     0.0   
    22       4     0.3496     0.8641     0.1443
    23       4     0.1359     0.4855     0.1443
    24       5     0.3086     0.0783     0.0   
    25       5     0.9217     0.2303     0.0   
    26       1     0.5        0.0        0.75  
    27       2     0.3717     0.1056     0.5   
    28       3     0.3333     0.6667     0.75  
    29       4     0.4855     0.1359     0.6443
    30       5     0.2303     0.9217     0.5   
    31       6     0.0        0.0        0.75  
    32       7     0.0        0.0        0.5   
    33       1     0.5        0.5        0.75  
    34       1     0.0        0.5        0.75  
    35       2     0.7339     0.6283     0.5   
    36       2     0.8944     0.2661     0.5   
    37       4     0.6504     0.5145     0.6443
    38       4     0.8641     0.3497     0.6443
    39       5     0.6914     0.7697     0.5   
    40       5     0.0783     0.3086     0.5   
    41       2     0.6283     0.8944     0.5   
    42       3     0.6667     0.3333     0.75  
    43       4     0.5145     0.8641     0.6443
    44       5     0.7697     0.0783     0.5   
    45       2     0.2661     0.3717     0.5   
    46       2     0.1056     0.7339     0.5   
    47       4     0.3496     0.4855     0.6443
    48       4     0.1359     0.6503     0.6443
    49       5     0.3086     0.2303     0.5   
    50       5     0.9217     0.6914     0.5   
    51       4     0.4855     0.3496     0.8557
    52       4     0.6504     0.1359     0.8557
    53       4     0.8641     0.5145     0.8557
    54       4     0.5145     0.6503     0.8557
    55       4     0.3496     0.8641     0.8557
    56       4     0.1359     0.4855     0.8557
    57       4     0.4855     0.1359     0.3557
    58       4     0.6504     0.5145     0.3557
    59       4     0.8641     0.3497     0.3557
    60       4     0.5145     0.8641     0.3557
    61       4     0.3496     0.4855     0.3557
    62       4     0.1359     0.6503     0.3557


X-ray density (g/cm cub.)   =      2.66

MU (1/cm) =     177.045    Mass attenuation coefficient (cm**2/g) =     66.674

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

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

    1   Al   ,Si             2.316        4
                                                 1.7184       4
                                                 1.7184       4
                                                 1.7183       4
                                                 1.7183       4
    2   Si   ,Al             2.316        4
                                                 1.679        4
                                                 1.6318       5
                                                 1.6196       5
                                                 1.679        4
    3    Mg                  2.52         6
                                                 2.1038       4
                                                 2.1038       4
                                                 2.1038       4
                                                 2.1037       4
                                                 2.1039       4
                                                 2.1037       4
    4    O                   3.264        9
                                                 2.6864       5
                                                 3.2169       4
                                                 3.2169       4
                                                 2.8116       4
                                                 2.6964       5
                                                 2.6985       4
                                                 2.8776       4
                                                 2.5507       4
                                                 3.0349       4
    5    O                   3.264        6
                                                 2.6864       4
                                                 2.6965       4
                                                 2.7187       5
                                                 2.7189       5
                                                 2.6864       4
                                                 2.6965       4
    6   Bi   ,Bi             3.072        0
    7   Bi   ,Bi             3.072        6
                                                 2.7188       5
                                                 2.7188       5
                                                 2.7188       5
                                                 2.7188       5
                                                 2.7188       5
                                                 2.7188       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   1   0   0  6.059  12.118   0.059  176.54    6       58.0      593.8
    2   1   1   0 10.534  21.068   0.102   56.93    6       39.4       88.1
    3   0   0   2 11.031  22.062   0.107   51.73    2       67.7       78.8
    4   2   0   0 12.187  24.374   0.118   42.0     6       34.2       49.0
    5   1   0   2 12.622  25.244   0.122   39.02   12       64.8      327.0
    6   1   1   2 15.346  30.691   0.148   25.76   12      101.1      526.1
    7   2   1   0 16.216  32.433   0.156   22.87   12       32.0       46.8
    8   2   0   2 16.554  33.107   0.159   21.87   12      116.5      592.9
    9   2   1   1 17.169  34.339   0.165   20.2    24       92.4      689.1
   10   3   0   0 18.461  36.922   0.177   17.23    6       40.8       28.6
   11   2   1   2 19.787  39.574   0.189   14.78   24       51.4      155.8
   12   2   2   0 21.447  42.895   0.204   12.35    6       83.9       86.8
   13   3   0   2 21.714  43.428   0.207   12.01   12       24.3       14.2
   14   3   1   0 22.369  44.739   0.213   11.23   12       34.4       26.6
   15   0   0   4 22.5    44.999   0.214   11.09    2      173.5      111.1
   16   3   1   1 23.105  46.21    0.219   10.44   24       25.0       26.1
   17   1   0   4 23.389  46.777   0.222   10.16   12       35.9       26.1
   18   2   1   3 23.607  47.213   0.224    9.95   24       26.6       28.0
   19   2   2   2 24.373  48.747   0.231    9.25   12       52.1       50.1
   20   4   0   0 24.974  49.949   0.236    8.75    6        2.9        0.1
   21   1   1   4 25.094  50.188   0.237    8.66   12       24.9       10.7
   22   3   1   2 25.212  50.424   0.238    8.56   24       43.5       64.7
   23   2   0   4 25.915  51.831   0.244    8.04   12       10.5        1.8
   24   3   2   0 27.393  54.786   0.257    7.09   12       34.1       16.4
   25   4   0   2 27.616  55.232   0.259    6.96   12       55.6       42.9
   26   3   2   1 28.03   56.06    0.263    6.73   24       21.6       12.5
   27   2   1   4 28.277  56.555   0.265    6.6    24        0.3        0.0
   28   3   1   3 28.468  56.936   0.266    6.5    24       62.1       99.9
   29   4   1   0 28.928  57.855   0.27     6.27   12       79.6       79.3
   30   4   1   1 29.543  59.086   0.276    5.98   24       42.3       42.8
   31   3   0   4 29.782  59.564   0.278    5.87   12       94.8      105.3
   32   3   2   2 29.887  59.774   0.279    5.82   24        9.7        2.2
   33   4   1   2 31.344  62.688   0.291    5.24   24       34.1       24.3
   34   5   0   0 31.854  63.709   0.295    5.06    6      101.2       51.7
   35   2   2   4 31.957  63.914   0.296    5.02   12      162.0      263.2
   36   3   1   4 32.663  65.327   0.302    4.79   24        8.4        1.4
   37   3   2   3 32.838  65.677   0.303    4.73   24       34.4       22.4
   38   3   3   0 33.262  66.524   0.307    4.61    6       49.1       11.1
   39   2   1   5 33.635  67.27    0.31     4.5    24       25.9       12.0
   40   4   2   0 33.954  67.909   0.312    4.41   12       82.7       60.3
   41   5   0   2 34.151  68.302   0.314    4.36   12       10.2        0.9
   42   4   1   3 34.225  68.45    0.314    4.34   24       71.8       89.2
   43   4   2   1 34.518  69.036   0.317    4.26   24        3.2        0.2
   44   4   0   4 34.738  69.476   0.319    4.21   12       54.2       24.7
   45   0   0   6 35.031  70.061   0.321    4.14    2      120.6       20.0
   46   3   3   2 35.513  71.026   0.325    4.03   12       62.2       31.1
   47   1   0   6 35.707  71.414   0.326    3.98   12       15.1        1.8
   48   5   1   0 35.993  71.987   0.329    3.92   12        2.5        0.0
   49   4   2   2 36.185  72.37    0.33     3.88   24        7.2        0.8
   50   5   1   1 36.543  73.086   0.333    3.81   24       13.7        2.8
   51   3   2   4 36.758  73.516   0.335    3.77   24       47.2       33.5
   52   1   1   6 37.044  74.088   0.337    3.71   12       68.8       35.1
   53   3   1   5 37.682  75.363   0.342    3.6    24       24.6        8.7
   54   2   0   6 37.706  75.411   0.342    3.59   12       67.0       32.2
   55   4   1   4 38.081  76.162   0.345    3.53   24        3.3        0.2
   56   5   1   2 38.174  76.349   0.345    3.52   24       59.6       49.9
   57   4   2   3 38.9    77.799   0.351    3.4    24       20.1        5.5
   58   6   0   0 39.295  78.59    0.354    3.35    6       91.7       28.1
   59   2   1   6 39.668  79.337   0.357    3.3    24       50.3       33.3
   60   4   3   0 39.945  79.89    0.359    3.26   12        2.1        0.0
   61   4   3   1 40.477  80.954   0.363    3.2    24        2.8        0.1
   62   5   0   4 40.685  81.37    0.364    3.17   12       17.1        1.9
   63   5   1   3 40.846  81.692   0.366    3.15   24       11.6        1.7
   64   3   0   6 40.963  81.925   0.366    3.14   12        4.9        0.2
   65   5   2   0 41.237  82.474   0.368    3.11   12       89.3       49.6
   66   6   0   2 41.421  82.842   0.37     3.09   12      143.0      126.2
   67   3   2   5 41.583  83.166   0.371    3.08   24       23.2        6.6
   68   5   2   1 41.765  83.531   0.372    3.06   24       69.5       59.0
   69   3   3   4 41.973  83.945   0.374    3.04   12        7.4        0.3
   70   4   3   2 42.064  84.127   0.375    3.03   24        4.8        0.3
   71   4   2   4 42.614  85.228   0.378    2.98   24       97.6      113.5
   72   4   1   5 42.866  85.731   0.38     2.96   24       49.9       29.4
   73   2   2   6 42.889  85.778   0.38     2.96   12       76.7       34.8
   74   5   2   2 43.345  86.689   0.384    2.93   24       45.8       24.6
   75   3   1   6 43.529  87.057   0.385    2.92   24       44.6       23.2
   76   6   1   0 43.801  87.602   0.387    2.9    12       20.8        2.5
   77   6   1   1 44.326  88.651   0.391    2.86   24        0.9        0.0
   78   5   1   4 44.532  89.063   0.392    2.85   24       37.2       15.8
   79   4   3   3 44.691  89.382   0.393    2.84   24       72.7       60.0


  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   0   0   6.059  12.118  8.47406      593.8     86.2     87.6     5.6
    2   1   1   0  10.534  21.068  4.8925        88.1     12.8     12.9     5.6
    3   0   0   2  11.031  22.062  4.67475       78.8     11.4     11.6     5.6
    4   2   0   0  12.187  24.374  4.23703       49.0      7.1      7.2     5.6
    5   1   0   2  12.622  25.244  4.09323      327.0     47.5     47.8     5.6
    6   1   1   2  15.346  30.691  3.37991      526.1     76.3     76.6     5.6
    7   2   1   0  16.216  32.433  3.20289       46.8      6.8      6.8     5.6
    8   2   0   2  16.554  33.107  3.1394       592.9     86.0     86.1     5.6
    9   2   1   1  17.169  34.339  3.03003      689.1    100.0    100.0     5.7
   10   3   0   0  18.461  36.922  2.82469       28.6      4.1      4.1     5.7
   11   2   1   2  19.787  39.574  2.64222      155.8     22.6     22.5     5.7
   12   2   2   0  21.447  42.895  2.44625       86.8     12.6     12.5     5.7
   13   3   0   2  21.714  43.428  2.41761       14.2      2.1      2.0     5.7
   14   3   1   0  22.369  44.739  2.35028       26.6      3.9      3.8     5.7
   15   0   0   4  22.5    44.999  2.33737      111.1     16.1     15.9     5.7
   16   3   1   1  23.105  46.21   2.27937       26.1      3.8      3.7     5.7
   17   1   0   4  23.389  46.777  2.25323       26.1      3.8      3.7     5.7
   18   2   1   3  23.607  47.213  2.23362       28.0      4.1      4.0     5.7
   19   2   2   2  24.373  48.747  2.16743       50.1      7.3      7.2     5.7
   20   1   1   4  25.094  50.188  2.10905       10.7      1.6      1.5     5.7
   21   3   1   2  25.212  50.424  2.09983       64.7      9.4      9.2     5.8
   22   3   2   0  27.393  54.786  1.94408       16.4      2.4      2.3     5.8
   23   4   0   2  27.616  55.232  1.92961       42.9      6.2      6.1     5.8
   24   3   2   1  28.03   56.06   1.90337       12.5      1.8      1.8     5.8
   25   3   1   3  28.468  56.936  1.87649       99.9     14.5     14.1     5.8
   26   4   1   0  28.928  57.855  1.84919       79.3     11.5     11.2     5.8
   27   4   1   1  29.543  59.086  1.81405       42.8      6.2      6.0     5.8
   28   3   0   4  29.782  59.564  1.80079      105.3     15.3     14.8     5.8
   29   4   1   2  31.344  62.688  1.71955       24.3      3.5      3.4     5.8
   30   5   0   0  31.854  63.709  1.69481       51.7      7.5      7.2     5.9
   31   2   2   4  31.957  63.914  1.68995      263.2     38.2     36.9     5.9
   32   3   2   3  32.838  65.677  1.64947       22.4      3.3      3.1     5.9
   33   3   3   0  33.262  66.524  1.63083       11.1      1.6      1.5     5.9
   34   2   1   5  33.635  67.27   1.61484       12.0      1.7      1.7     5.9
   35   4   2   0  33.954  67.909  1.60145       60.3      8.7      8.4     5.9
   36   4   1   3  34.225  68.45   1.59031       89.2     12.9     12.4     5.9
   37   4   0   4  34.738  69.476  1.5697        24.7      3.6      3.4     5.9
   38   0   0   6  35.031  70.061  1.55825       20.0      2.9      2.8     5.9
   39   3   3   2  35.513  71.026  1.53982       31.1      4.5      4.3     5.9
   40   3   2   4  36.758  73.516  1.49466       33.5      4.9      4.6     6.0
   41   1   1   6  37.044  74.088  1.48476       35.1      5.1      4.8     6.0
   42   2   0   6  37.706  75.411  1.46248       40.9      5.9      5.6     6.0
   43   5   1   2  38.174  76.349  1.44722       49.9      7.2      6.8     6.0
   44   6   0   0  39.295  78.59   1.41234       28.1      4.1      3.8     6.0
   45   2   1   6  39.668  79.337  1.40122       33.3      4.8      4.5     6.0
   46   5   2   0  41.237  82.474  1.35694       49.6      7.2      6.7     6.1
   47   6   0   2  41.421  82.842  1.35199      126.2     18.3     17.0     6.1
   48   5   2   1  41.765  83.531  1.34287       59.0      8.6      8.0     6.1
   49   4   2   4  42.614  85.228  1.32111      113.5     16.5     15.2     6.1
   50   2   2   6  42.889  85.778  1.31426       64.2      9.3      8.6     6.1
   51   5   2   2  43.345  86.689  1.30315       24.6      3.6      3.3     6.1
   52   3   1   6  43.529  87.057  1.29873       23.2      3.4      3.1     6.1
   53   5   1   4  44.532  89.063  1.27543       15.8      2.3      2.1     6.2
   54   4   3   3  44.691  89.382  1.27184       60.0      8.7      8.0     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)