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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BARITE

15, t-barite, analogue, at 21 GPa+1450'K

CaSO(4)


Orthorhombic  P bnm  Z = 4

Pbnm

1 .6 .1905

Ref.Str.:

         W.A. Crichton, J.A.Parise et al. (2005)

         * Amer. Mineral., 90, 22-27

Reserv:

         N.A.D.

                   Initial data from BDM-file 

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

             a =   6.3365   alpha =   90.0 
             b =   7.5347   beta  =   90.0 
             c =   4.9532   gamma =   90.0 

    Unit cell volume (cub. angs.) =   236.48

    Molar volume ( cub.cm/mol.) =    35.61

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

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

   1 0.1696  0.1812  0.25     2.98   Ca    = 1.00
   2 0.8166  0.5606  0.25     4.52   S     = 1.00
   3 0.5675  0.8898  0.25     3.34   O     = 1.00
   4 0.5341  0.2141  0.25     3.34   O     = 1.00
   5 0.3193  0.4287  0.9823   3.34   O     = 1.00


  Co-ordinates for all atomic positions :

   No       NoP      x/a        y/b       z/c 

     1       1     0.1696     0.1812     0.25  
     2       2     0.8166     0.5606     0.25  
     3       3     0.5675     0.8898     0.25  
     4       4     0.5341     0.2141     0.25  
     5       5     0.3193     0.4287     0.9823
     6       1     0.8304     0.8188     0.75  
     7       2     0.1834     0.4394     0.75  
     8       3     0.4325     0.1102     0.75  
     9       4     0.4659     0.7859     0.75  
    10       5     0.6807     0.5713     0.0177
    11       5     0.6807     0.5713     0.4823
    12       5     0.3193     0.4287     0.5177
    13       1     0.3304     0.6812     0.25  
    14       2     0.6834     0.0606     0.25  
    15       3     0.9325     0.3898     0.25  
    16       4     0.9659     0.7141     0.25  
    17       5     0.1807     0.9287     0.9823
    18       1     0.6696     0.3188     0.75  
    19       2     0.3166     0.9394     0.75  
    20       3     0.0675     0.6102     0.75  
    21       4     0.0341     0.2859     0.75  
    22       5     0.8193     0.0713     0.0177
    23       5     0.8193     0.0713     0.4823
    24       5     0.1807     0.9287     0.5177


X-ray density (g/cm cub.)   =      3.82

MU (1/cm) =     283.18     Mass attenuation coefficient (cm**2/g) =     74.084

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

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

    1    Ca                  2.88        10
                                                 2.3229       4
                                                 2.477        5
                                                 2.477        5
                                                 2.1743       3
                                                 2.3201       5
                                                 2.7373       4
                                                 2.7373       4
                                                 2.6337       5
                                                 2.6337       5
                                                 2.3201       5
    2    S                   1.98         4
                                                 1.4394       5
                                                 1.4394       5
                                                 1.4817       3
                                                 1.4942       4
    3    O                   3.264       12
                                                 2.4527       4
                                                 3.1021       3
                                                 3.1021       3
                                                 2.676        4
                                                 2.676        4
                                                 2.7564       5
                                                 2.7564       5
                                                 2.8505       4
                                                 2.802        5
                                                 2.3958       5
                                                 2.3958       5
                                                 2.802        5
    4    O                   3.264       10
                                                 2.4527       3
                                                 2.495        5
                                                 2.676        3
                                                 2.676        3
                                                 3.0709       5
                                                 3.0709       5
                                                 2.495        5
                                                 2.8505       3
                                                 2.3974       5
                                                 2.3974       5
    5    O                   3.264        9
                                                 2.495        4
                                                 2.7564       3
                                                 3.0709       4
                                                 2.5356       5
                                                 2.6519       5
                                                 2.3013       5
                                                 2.802        3
                                                 2.3958       3
                                                 2.3974       4

  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  9.139  18.279   0.103   76.35    4       11.4       70.7
    2   1   0   1 11.384  22.768   0.128   48.44    4       11.8       48.4
    3   0   2   0 11.798  23.596   0.133   44.96    2        8.8       12.4
    4   1   1   1 12.844  25.687   0.144   37.61    8       11.5       71.6
    5   1   2   0 13.761  27.522   0.154   32.51    4       15.6       56.7
    6   2   0   0 14.071  28.142   0.158   31.0     2       55.0      335.9
    7   0   2   1 14.885  29.77    0.167   27.49    4       65.4      842.3
    8   2   1   0 15.292  30.585   0.171   25.95    4       39.1      283.3
    9   1   2   1 16.511  33.021   0.184   21.99    8       58.2     1065.6
   10   2   1   1 17.829  35.658   0.199   18.6     8       55.4      816.7
   11   0   0   2 18.121  36.242   0.202   17.95    2       90.8      528.8
   12   2   2   0 18.522  37.044   0.206   17.11    4       29.4      105.9
   13   1   3   0 19.263  38.526   0.214   15.69    4        6.1        4.2
   14   1   1   2 20.44   40.881   0.227   13.75    8       32.5      207.2
   15   2   2   1 20.713  41.427   0.23    13.35    8       41.2      323.5
   16   1   3   1 21.39   42.781   0.237   12.42    8        9.5       16.2
   17   0   2   2 21.852  43.704   0.242   11.84    4       38.1      123.1
   18   3   1   0 22.256  44.512   0.246   11.36    4       25.5       52.8
   19   2   3   0 23.04   46.08    0.254   10.51    4       27.7       57.5
   20   1   2   2 23.051  46.103   0.254   10.5     8       36.1      195.3
   21   2   0   2 23.252  46.504   0.256   10.29    4        0.0        0.0
   22   3   0   1 23.357  46.714   0.257   10.19    4       15.9       18.3
   23   2   1   2 24.066  48.133   0.265    9.52    8       48.8      324.5
   24   0   4   0 24.137  48.275   0.265    9.46    2       16.2        8.9
   25   3   1   1 24.169  48.338   0.266    9.43    8       37.8      192.8
   26   3   2   0 24.714  49.428   0.271    8.96    4       19.7       25.0
   27   2   3   1 24.906  49.812   0.273    8.81    8       33.9      145.2
   28   1   4   0 25.253  50.505   0.277    8.53    4       80.1      391.5
   29   0   4   1 25.944  51.888   0.284    8.02    4       24.4       34.3
   30   2   2   2 26.396  52.793   0.289    7.71    8        1.7        0.3
   31   3   2   1 26.492  52.985   0.29     7.65    8       12.4       16.9
   32   1   3   2 26.962  53.924   0.294    7.35    8       11.0       12.7
   33   1   4   1 27.005  54.01    0.295    7.32    8        2.6        0.7
   34   2   4   0 28.408  56.815   0.309    6.53    4        4.9        1.1
   35   3   3   0 28.457  56.915   0.309    6.5     4       46.3       99.6
   36   1   0   3 28.823  57.647   0.313    6.32    4        8.9        3.6
   37   4   0   0 29.094  58.189   0.316    6.19    2       15.4        5.3
   38   3   1   2 29.346  58.692   0.318    6.07    8       20.3       35.9
   39   1   1   3 29.527  59.054   0.32     5.98    8        6.2        3.3
   40   4   1   0 29.794  59.588   0.323    5.86    4       25.7       27.8
   41   2   3   2 29.994  59.988   0.324    5.78    8       12.6       13.0
   42   2   4   1 30.034  60.068   0.325    5.76    8        9.1        6.8
   43   3   3   1 30.082  60.164   0.325    5.74    8       35.6      104.3
   44   0   2   3 30.622  61.244   0.331    5.52    4       29.1       33.4
   45   0   4   2 30.915  61.83    0.333    5.4     4        2.9        0.3
   46   4   1   1 31.376  62.751   0.338    5.23    8       20.3       30.7
   47   3   2   2 31.406  62.811   0.338    5.22    8        6.0        2.7
   48   1   2   3 31.579  63.158   0.34     5.15    8       27.1       54.1
   49   1   5   0 31.696  63.392   0.341    5.11    4       10.1        3.8
   50   4   2   0 31.836  63.672   0.342    5.06    4        0.8        0.0
   51   1   4   2 31.867  63.734   0.343    5.05    8       26.1       49.1
   52   2   1   3 32.407  64.813   0.348    4.87    8       35.6       88.1
   53   3   4   0 33.224  66.449   0.356    4.62    4       19.8       13.0
   54   1   5   1 33.226  66.452   0.356    4.62    8       21.3       30.0
   55   4   2   1 33.362  66.725   0.357    4.58    8        7.8        3.9
   56   2   2   3 34.362  68.724   0.366    4.3     8       19.5       23.4
   57   2   5   0 34.474  68.948   0.367    4.27    4        7.1        1.6
   58   2   4   2 34.638  69.276   0.369    4.23    8        1.0        0.1
   59   3   3   2 34.682  69.365   0.369    4.22    8       43.5      114.0
   60   3   4   1 34.72   69.439   0.37     4.21    8        4.8        1.4
   61   1   3   3 34.848  69.695   0.371    4.18    8        0.4        0.0
   62   4   3   0 35.092  70.184   0.373    4.12    4        5.7        1.0
   63   4   0   2 35.255  70.509   0.375    4.08    4        6.8        1.3
   64   4   1   2 35.887  71.775   0.381    3.94    8       34.4       66.6
   65   2   5   1 35.945  71.889   0.381    3.93    8       12.9        9.3
   66   3   0   3 36.31   72.621   0.384    3.85    4        9.6        2.6
   67   4   3   1 36.552  73.104   0.387    3.81    8        8.8        4.3
   68   3   1   3 36.936  73.871   0.39     3.73    8       20.1       21.5
   69   2   3   3 37.514  75.028   0.395    3.63    8       19.5       19.7
   70   1   5   2 37.631  75.261   0.396    3.61    8       15.9       13.1
   71   4   2   2 37.76   75.52    0.397    3.58    8        3.0        0.5
   72   0   6   0 37.835  75.669   0.398    3.57    2        7.5        0.7
   73   5   1   0 38.05   76.1     0.4      3.54    4        5.9        0.9
   74   0   4   3 38.344  76.688   0.403    3.49    4       21.3       11.3
   75   0   0   4 38.466  76.931   0.404    3.47    2       66.9       55.6
   76   1   6   0 38.705  77.411   0.406    3.43    4        9.0        2.0
   77   3   2   3 38.79   77.579   0.407    3.42    8        6.1        1.8
   78   5   0   1 38.858  77.716   0.407    3.41    4       23.2       13.1
   79   3   5   0 38.896  77.793   0.408    3.4     4       19.7        9.4
   80   3   4   2 39.053  78.106   0.409    3.38    8        8.2        3.3
   81   1   4   3 39.211  78.422   0.41     3.36    8        3.1        0.5
   82   0   6   1 39.256  78.513   0.411    3.35    4       36.9       32.6
   83   4   4   0 39.445  78.89    0.412    3.33    4        5.6        0.7
   84   5   1   1 39.469  78.939   0.413    3.32    8        2.8        0.4
   85   5   2   0 39.887  79.775   0.416    3.27    4        0.6        0.0
   86   1   1   4 39.941  79.883   0.417    3.26    8        2.3        0.3
   87   1   6   1 40.118  80.236   0.418    3.24    8       28.9       38.8
   88   2   5   2 40.23   80.459   0.419    3.23    8        9.5        4.2
   89   3   5   1 40.307  80.614   0.42     3.22    8       21.9       22.1
   90   4   3   2 40.816  81.632   0.424    3.16    8       28.2       36.0
   91   4   4   1 40.851  81.702   0.425    3.15    8        5.1        1.2
   92   0   2   4 40.904  81.807   0.425    3.15    4        1.8        0.1
   93   2   6   0 41.286  82.571   0.428    3.11    4        0.2        0.0
   94   5   2   1 41.29   82.579   0.428    3.11    8       21.1       19.9
   95   1   2   4 41.757  83.514   0.432    3.06    8        0.2        0.0
   96   2   4   3 41.784  83.567   0.433    3.06    8        0.9        0.0
   97   3   3   3 41.826  83.651   0.433    3.05    8       26.6       30.9
   98   2   0   4 41.903  83.806   0.434    3.05    4       18.2        7.2
   99   2   1   4 42.505  85.009   0.439    2.99    8       16.1       11.1
  100   2   6   1 42.679  85.358   0.44     2.98    8        4.5        0.9
  101   5   3   0 42.907  85.813   0.442    2.96    4       14.0        4.1
  102   4   1   3 42.967  85.934   0.442    2.96    8       17.9       13.5
  103   0   6   2 43.451  86.902   0.446    2.92    4       14.9        4.6
  104   5   1   2 43.66   87.32    0.448    2.91    8       11.5        5.5
  105   5   3   1 44.294  88.588   0.453    2.87    8       12.3        6.2
  106   1   6   2 44.298  88.597   0.453    2.87    8        1.9        0.1
  107   2   2   4 44.304  88.608   0.453    2.87    8        6.6        1.8
  108   3   5   2 44.485  88.97    0.455    2.86    8       28.9       34.0
  109   1   5   3 44.64   89.279   0.456    2.85    8       14.8        9.0
  110   1   3   4 44.758  89.516   0.457    2.84    8        4.8        0.9
  111   4   2   3 44.765  89.53    0.457    2.84    8        4.8        0.9
  112   4   5   0 44.869  89.739   0.458    2.83    4       10.0        2.0


  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   0   9.139  18.279  4.84956       70.7      6.6      6.7     5.6
    2   1   0   1  11.384  22.768  3.9024        48.4      4.5      4.6     5.6
    3   0   2   0  11.798  23.596  3.76735       12.4      1.2      1.2     5.6
    4   1   1   1  12.844  25.687  3.46522       71.6      6.7      6.8     5.6
    5   1   2   0  13.761  27.522  3.23824       56.7      5.3      5.3     5.6
    6   2   0   0  14.071  28.142  3.16825      335.9     31.5     31.6     5.6
    7   0   2   1  14.885  29.77   2.99857      842.3     79.0     79.3     5.6
    8   2   1   0  15.292  30.585  2.92056      283.3     26.6     26.6     5.6
    9   1   2   1  16.511  33.021  2.71041     1065.6    100.0    100.0     5.6
   10   2   1   1  17.829  35.658  2.5158       816.7     76.6     76.5     5.7
   11   0   0   2  18.121  36.242  2.4766       528.8     49.6     49.5     5.7
   12   2   2   0  18.522  37.044  2.42478      105.9      9.9      9.9     5.7
   13   1   1   2  20.44   40.881  2.20563      207.2     19.4     19.3     5.7
   14   2   2   1  20.713  41.427  2.17783      323.5     30.4     30.1     5.7
   15   1   3   1  21.39   42.781  2.11197       16.2      1.5      1.5     5.7
   16   0   2   2  21.852  43.704  2.06948      123.1     11.6     11.4     5.7
   17   3   1   0  22.256  44.512  2.03377       52.8      5.0      4.9     5.7
   18   1   2   2  23.051  46.103  1.96722      252.8     23.7     23.4     5.7
   19   3   0   1  23.357  46.714  1.94289       18.3      1.7      1.7     5.7
   20   2   1   2  24.066  48.133  1.88889      324.5     30.5     30.0     5.7
   21   3   1   1  24.169  48.338  1.88135      192.8     18.1     17.8     5.7
   22   3   2   0  24.714  49.428  1.84237       25.0      2.3      2.3     5.7
   23   2   3   1  24.906  49.812  1.82906      145.2     13.6     13.4     5.7
   24   1   4   0  25.253  50.505  1.80558      391.5     36.7     36.1     5.8
   25   0   4   1  25.944  51.888  1.76066       34.3      3.2      3.2     5.8
   26   3   2   1  26.492  52.985  1.72678       16.9      1.6      1.5     5.8
   27   1   3   2  26.962  53.924  1.69889       12.7      1.2      1.2     5.8
   28   3   3   0  28.457  56.915  1.61652       99.6      9.4      9.1     5.8
   29   3   1   2  29.346  58.692  1.57173       35.9      3.4      3.3     5.8
   30   4   1   0  29.794  59.588  1.55023       27.8      2.6      2.5     5.8
   31   2   3   2  29.994  59.988  1.54085       13.0      1.2      1.2     5.8
   32   3   3   1  30.082  60.164  1.53675      104.3      9.8      9.5     5.8
   33   0   2   3  30.622  61.244  1.51222       33.4      3.1      3.0     5.8
   34   4   1   1  31.376  62.751  1.47947       30.7      2.9      2.8     5.9
   35   1   2   3  31.579  63.158  1.47091       54.1      5.1      4.9     5.9
   36   1   4   2  31.867  63.734  1.459         49.1      4.6      4.4     5.9
   37   2   1   3  32.407  64.813  1.43729       88.1      8.3      8.0     5.9
   38   1   5   1  33.226  66.452  1.40577       43.0      4.0      3.9     5.9
   39   2   2   3  34.362  68.724  1.36473       23.4      2.2      2.1     5.9
   40   3   3   2  34.682  69.365  1.35368      114.0     10.7     10.2     5.9
   41   4   1   2  35.887  71.775  1.31403       66.6      6.2      5.9     5.9
   42   3   1   3  36.936  73.871  1.28184       21.5      2.0      1.9     6.0
   43   2   3   3  37.514  75.028  1.26492       19.7      1.8      1.7     6.0
   44   1   5   2  37.631  75.261  1.26158       13.1      1.2      1.2     6.0
   45   0   4   3  38.344  76.688  1.24162       11.3      1.1      1.0     6.0
   46   0   0   4  38.466  76.931  1.2383        55.6      5.2      4.9     6.0
   47   5   0   1  38.858  77.716  1.22775       13.1      1.2      1.2     6.0
   48   0   6   1  39.256  78.513  1.21727       32.6      3.1      2.9     6.0
   49   1   6   1  40.118  80.236  1.19541       38.8      3.6      3.4     6.0
   50   3   5   1  40.307  80.614  1.19075       22.1      2.1      1.9     6.1
   51   4   3   2  40.816  81.632  1.17846       36.0      3.4      3.1     6.1
   52   5   2   1  41.29   82.579  1.16733       19.9      1.9      1.7     6.1
   53   3   3   3  41.826  83.651  1.15507       30.9      2.9      2.7     6.1
   54   2   1   4  42.505  85.009  1.14006       11.1      1.0      1.0     6.1
   55   4   1   3  42.967  85.934  1.13015       13.5      1.3      1.2     6.1
   56   3   5   2  44.485  88.97   1.09927       34.0      3.2      2.9     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)