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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ARAGONITE

1, g-aragonite

CaCO(3)


Orthorhombic  P mcn  Z = 4

R =0.021

8 .5 .1990

Ref.Str.:

         Jarosch D., Heger G. (1986)

         * Tschermaks Min. Petr. Mitt., 35, 127-131

                   Initial data from BDM-file 

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

             a =   4.9611   alpha =   90.0 
             b =   7.9672   beta  =   90.0 
             c =   5.7404   gamma =   90.0 

    Unit cell volume (cub. angs.) =   226.9 

    Molar volume ( cub.cm/mol.) =    34.17

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

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

   1 0.25    0.4151  0.2405   0.0    Ca    = 1.00
   2 0.25    0.7621  0.0852   0.0    C     = 1.00
   3 0.25    0.9222  0.0956   0.0    O     = 1.00
   4 0.4735  0.6807  0.0873   0.0    O     = 1.00


  Co-ordinates for all atomic positions :

   No       NoP      x/a        y/b       z/c 

     1       1     0.25       0.4151     0.2405
     2       2     0.25       0.7621     0.0852
     3       3     0.25       0.9222     0.0956
     4       4     0.4735     0.6807     0.0873
     5       1     0.75       0.5849     0.7595
     6       2     0.75       0.2379     0.9148
     7       3     0.75       0.0778     0.9044
     8       4     0.5265     0.3193     0.9127
     9       1     0.25       0.0849     0.7405
    10       2     0.25       0.7379     0.5852
    11       3     0.25       0.5778     0.5956
    12       4     0.0265     0.8193     0.5873
    13       1     0.75       0.9151     0.2595
    14       2     0.75       0.2621     0.4148
    15       3     0.75       0.4222     0.4044
    16       4     0.9735     0.1807     0.4127
    17       4     0.0265     0.6807     0.0873
    18       4     0.9735     0.3193     0.9127
    19       4     0.4735     0.8193     0.5873
    20       4     0.5265     0.1807     0.4127


X-ray density (g/cm cub.)   =      2.93

MU (1/cm) =     207.784    Mass attenuation coefficient (cm**2/g) =     70.939

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

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

    1    Ca                  2.88         9
                                                 2.5457       4
                                                 2.4505       4
                                                 2.4157       3
                                                 2.6536       3
                                                 2.6536       3
                                                 2.5192       4
                                                 2.5457       4
                                                 2.4505       4
                                                 2.5192       4
    2    C                   1.872        3
                                                 1.2769       3
                                                 1.2846       4
                                                 1.2846       4
    3    O                   3.264       10
                                                 2.2212       4
                                                 2.9824       3
                                                 2.9824       3
                                                 3.1414       4
                                                 3.2273       4
                                                 3.0719       4
                                                 2.2212       4
                                                 3.1414       4
                                                 3.2273       4
                                                 3.0719       4
    4    O                   3.264        9
                                                 2.2212       3
                                                 3.0601       4
                                                 3.2273       3
                                                 3.1414       3
                                                 3.0719       3
                                                 2.7435       4
                                                 2.2176       4
                                                 3.0753       4
                                                 3.0753       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   0   1   1  9.52   19.04    0.107   70.19    4        2.0        2.3
    2   1   1   0 10.539  21.078   0.119   56.88    4        6.2       16.9
    3   0   2   0 11.149  22.298   0.126   50.6     2        6.3        7.8
    4   1   1   1 13.112  26.223   0.147   36.01    8       43.8     1072.4
    5   0   2   1 13.613  27.226   0.153   33.26    4       48.8      616.1
    6   0   0   2 15.567  31.135   0.174   24.97    2       22.5       49.0
    7   1   2   1 16.377  32.755   0.183   22.38    8       16.3       92.5
    8   0   1   2 16.574  33.148   0.185   21.81    4       58.2      574.4
    9   1   0   2 18.062  36.124   0.201   18.08    4       47.2      313.3
   10   2   0   0 18.091  36.182   0.202   18.02    2       52.7      194.4
   11   0   3   1 18.638  37.275   0.207   16.88    4       35.9      168.5
   12   1   1   2 18.952  37.904   0.211   16.26    8       42.4      453.7
   13   1   3   0 19.207  38.415   0.214   15.79    4       50.7      315.6
   14   0   2   2 19.316  38.632   0.215   15.59    4       42.2      215.7
   15   2   1   1 20.599  41.198   0.228   13.52    8       27.3      156.4
   16   1   3   1 20.812  41.624   0.231   13.21    8        4.8        4.8
   17   1   2   2 21.432  42.865   0.237   12.37    8        0.9        0.2
   18   2   2   0 21.457  42.915   0.237   12.34    4       50.1      240.2
   19   0   4   0 22.751  45.502   0.251   10.81    2       31.0       40.4
   20   2   2   1 22.932  45.865   0.253   10.62    8       70.9      828.8
   21   0   3   2 23.276  46.552   0.257   10.27    4        7.4        4.4
   22   0   4   1 24.164  48.327   0.266    9.43    4       70.7      366.1
   23   2   0   2 24.232  48.463   0.266    9.37    4       55.2      222.0
   24   0   1   3 24.457  48.913   0.269    9.18    4        5.3        2.0
   25   2   1   2 24.94   49.879   0.274    8.78    8       13.1       23.4
   26   1   3   2 25.123  50.246   0.276    8.63    8       51.1      349.7
   27   1   4   1 25.964  51.927   0.284    8.01    8       18.0       40.2
   28   1   1   3 26.242  52.484   0.287    7.82    8       55.3      371.5
   29   2   3   1 26.462  52.923   0.289    7.67    8       27.1       87.8
   30   0   2   3 26.525  53.05    0.29     7.63    4       53.3      168.2
   31   2   2   2 26.981  53.962   0.295    7.34    8       15.5       27.5
   32   0   4   2 28.081  56.162   0.306    6.7     4       25.2       33.0
   33   1   2   3 28.217  56.434   0.307    6.63    8       10.3       10.9
   34   3   1   0 28.406  56.812   0.309    6.53    4       20.9       22.1
   35   3   1   1 29.622  59.245   0.321    5.94    8       28.6       75.4
   36   1   4   2 29.714  59.428   0.322    5.9     8        1.2        0.1
   37   2   4   0 29.734  59.467   0.322    5.89    4       16.6       12.6
   38   0   3   3 29.746  59.493   0.322    5.88    4        2.8        0.3
   39   0   5   1 30.112  60.223   0.326    5.73    4       25.6       29.3
   40   2   3   2 30.17   60.34    0.326    5.7     8        7.4        4.9
   41   1   5   0 30.513  61.025   0.33     5.56    4        5.5        1.3
   42   2   4   1 30.917  61.835   0.334    5.4     8       30.2       76.6
   43   2   1   3 31.166  62.332   0.336    5.3     8        3.0        0.8
   44   1   3   3 31.325  62.65    0.337    5.25    8        2.8        0.7
   45   3   2   1 31.458  62.917   0.339    5.2     8       22.7       41.7
   46   1   5   1 31.679  63.358   0.341    5.12    8       33.0       86.7
   47   0   0   4 32.462  64.924   0.348    4.85    2       11.0        2.3
   48   3   0   2 32.519  65.037   0.349    4.83    4       14.1        7.5
   49   2   2   3 32.952  65.904   0.353    4.7     8        4.8        1.7
   50   0   1   4 33.051  66.101   0.354    4.67    4       37.6       51.2
   51   3   1   2 33.107  66.213   0.355    4.65    8       23.0       38.2
   52   3   3   0 33.279  66.558   0.356    4.6     4       34.5       42.6
   53   0   5   2 33.567  67.133   0.359    4.52    4        1.1        0.0
   54   0   4   3 33.933  67.866   0.362    4.42    4        0.8        0.0
   55   1   0   4 33.969  67.939   0.363    4.41    4        9.8        3.3
   56   2   4   2 34.327  68.655   0.366    4.31    8       26.6       47.5
   57   3   3   1 34.394  68.788   0.367    4.3     8        5.4        2.0
   58   1   1   4 34.545  69.09    0.368    4.26    8       32.5       70.0
   59   0   2   4 34.786  69.572   0.37     4.2     4       28.8       27.1
   60   3   2   2 34.84   69.681   0.371    4.18    8        9.4        5.8
   61   1   5   2 35.05   70.1     0.373    4.13    8       24.7       39.3
   62   1   4   3 35.409  70.818   0.376    4.05    8        9.3        5.5
   63   0   6   0 35.457  70.914   0.377    4.04    2       39.4       24.4
   64   2   3   3 35.826  71.652   0.38     3.96    8        1.3        0.1
   65   2   5   1 36.158  72.316   0.383    3.89    8       13.7       11.3
   66   1   2   4 36.247  72.493   0.384    3.87    8        8.9        4.7
   67   0   6   1 36.542  73.083   0.386    3.81    4        5.8        1.0
   68   0   3   4 37.597  75.193   0.396    3.61    4        6.1        1.0
   69   3   3   2 37.649  75.299   0.396    3.6     8       42.3      100.1
   70   1   6   1 37.975  75.95    0.399    3.55    8        3.2        0.6
   71   2   0   4 38.323  76.646   0.403    3.49    4       39.1       41.5
   72   3   4   1 38.323  76.647   0.403    3.49    8        0.5        0.0
   73   4   0   0 38.393  76.787   0.403    3.48    2       79.0       84.4
   74   3   1   3 38.549  77.098   0.405    3.46    8       49.6      132.4
   75   2   1   4 38.872  77.745   0.407    3.41    8        1.6        0.1
   76   0   5   3 38.982  77.964   0.408    3.39    4        2.8        0.2
   77   1   3   4 39.016  78.033   0.409    3.39    8       42.6       95.5
   78   2   5   2 39.356  78.712   0.412    3.34    8       22.6       26.5
   79   2   4   3 39.701  79.401   0.415    3.29    8       46.2      109.1
   80   0   6   2 39.729  79.458   0.415    3.29    4       40.7       42.3
   81   4   1   1 39.993  79.987   0.417    3.26    8        0.4        0.0
   82   3   2   3 40.188  80.375   0.419    3.23    8        9.0        4.0
   83   1   5   3 40.387  80.775   0.421    3.21    8       43.0       92.1
   84   2   2   4 40.507  81.015   0.422    3.19    8        9.3        4.3
   85   4   2   0 40.576  81.153   0.422    3.19    4        6.0        0.9
   86   1   6   2 41.128  82.257   0.427    3.12    8       18.0       15.7
   87   2   6   0 41.146  82.291   0.427    3.12    4       74.8      135.8
   88   0   4   4 41.418  82.837   0.429    3.09    4       18.4        8.1
   89   3   4   2 41.47   82.94    0.43     3.09    8        1.5        0.1
   90   4   2   1 41.618  83.235   0.431    3.07    8       32.2       49.6
   91   3   5   0 42.168  84.335   0.436    3.02    4        2.7        0.2
   92   2   6   1 42.184  84.369   0.436    3.02    8        6.3        1.8
   93   4   0   2 42.575  85.151   0.439    2.99    4       22.1       11.3
   94   0   1   5 42.677  85.353   0.44     2.98    4       11.1        2.9
   95   1   4   4 42.807  85.613   0.441    2.97    8        7.4        2.5
   96   3   3   3 42.886  85.772   0.442    2.96    8       11.7        6.3
   97   4   1   2 43.113  86.225   0.444    2.95    8       22.7       23.7
   98   2   3   4 43.202  86.405   0.444    2.94    8       14.5        9.6
   99   3   5   1 43.203  86.405   0.444    2.94    8       34.4       54.1
  100   0   7   1 43.626  87.251   0.448    2.91    4        8.2        1.5
  101   1   7   0 43.976  87.951   0.451    2.89    4       15.1        5.1
  102   1   1   5 44.06   88.12    0.451    2.88    8       29.6       39.1
  103   0   2   5 44.286  88.571   0.453    2.87    4       26.3       15.5
  104   4   3   1 44.303  88.607   0.453    2.87    8       13.3        7.9
  105   2   5   3 44.551  89.102   0.455    2.85    8        5.3        1.2
  106   4   2   2 44.721  89.441   0.457    2.84    8       23.8       25.0
  107   0   6   3 44.917  89.834   0.458    2.83    4        3.2        0.2


  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  10.539  21.078  4.21137       16.9      1.6      1.6     5.6
    2   1   1   1  13.112  26.223  3.39558     1072.4    100.0    100.0     5.6
    3   0   2   1  13.613  27.226  3.27275      616.1     57.4     57.4     5.6
    4   0   0   2  15.567  31.135  2.8702        49.0      4.6      4.5     5.6
    5   1   2   1  16.377  32.755  2.73187       92.5      8.6      8.6     5.6
    6   0   1   2  16.574  33.148  2.70032      574.4     53.6     53.3     5.6
    7   1   0   2  18.062  36.124  2.48438      313.3     29.2     29.0     5.7
    8   2   0   0  18.091  36.182  2.48055      194.4     18.1     18.0     5.7
    9   0   3   1  18.638  37.275  2.41029      168.5     15.7     15.6     5.7
   10   1   1   2  18.952  37.904  2.37175      453.7     42.3     41.9     5.7
   11   1   3   0  19.207  38.415  2.34137      315.6     29.4     29.1     5.7
   12   0   2   2  19.316  38.632  2.32871      215.7     20.1     19.9     5.7
   13   2   1   1  20.599  41.198  2.18939      156.4     14.6     14.4     5.7
   14   2   2   0  21.457  42.915  2.10568      240.2     22.4     22.1     5.7
   15   0   4   0  22.751  45.502  1.9918        40.4      3.8      3.7     5.7
   16   2   2   1  22.932  45.865  1.97688      828.8     77.3     75.9     5.7
   17   0   4   1  24.164  48.327  1.88174      366.1     34.1     33.4     5.7
   18   2   0   2  24.232  48.463  1.87677      222.0     20.7     20.3     5.7
   19   2   1   2  24.94   49.879  1.82677       23.4      2.2      2.1     5.7
   20   1   3   2  25.123  50.246  1.81428      349.7     32.6     31.9     5.8
   21   1   4   1  25.964  51.927  1.75943       40.2      3.7      3.7     5.8
   22   1   1   3  26.242  52.484  1.74208      371.5     34.6     33.7     5.8
   23   2   3   1  26.462  52.923  1.72864       87.8      8.2      8.0     5.8
   24   0   2   3  26.525  53.05   1.72481      168.2     15.7     15.3     5.8
   25   2   2   2  26.981  53.962  1.69779       27.5      2.6      2.5     5.8
   26   0   4   2  28.081  56.162  1.63638       33.0      3.1      3.0     5.8
   27   1   2   3  28.217  56.434  1.62916       10.9      1.0      1.0     5.8
   28   3   1   0  28.406  56.812  1.61919       22.1      2.1      2.0     5.8
   29   3   1   1  29.622  59.245  1.55838       75.4      7.0      6.8     5.8
   30   2   4   0  29.734  59.467  1.55308       12.9      1.2      1.2     5.8
   31   0   5   1  30.112  60.223  1.53538       29.3      2.7      2.6     5.8
   32   2   4   1  30.917  61.835  1.49918       76.6      7.1      6.9     5.8
   33   3   2   1  31.458  62.917  1.47598       41.7      3.9      3.7     5.9
   34   1   5   1  31.679  63.358  1.46675       86.7      8.1      7.8     5.9
   35   0   1   4  33.051  66.101  1.41237       51.2      4.8      4.6     5.9
   36   3   1   2  33.107  66.213  1.41026       38.2      3.6      3.4     5.9
   37   3   3   0  33.279  66.558  1.40379       42.6      4.0      3.8     5.9
   38   2   4   2  34.327  68.655  1.36593       47.5      4.4      4.2     5.9
   39   1   1   4  34.545  69.09   1.3584        70.0      6.5      6.2     5.9
   40   0   2   4  34.786  69.572  1.35016       27.1      2.5      2.4     5.9
   41   1   5   2  35.05   70.1    1.34127       39.3      3.7      3.5     5.9
   42   0   6   0  35.457  70.914  1.32787       24.4      2.3      2.2     5.9
   43   2   5   1  36.158  72.316  1.30553       11.3      1.1      1.0     5.9
   44   3   3   2  37.649  75.299  1.26104      100.1      9.3      8.8     6.0
   45   2   0   4  38.323  76.646  1.24219       41.5      3.9      3.6     6.0
   46   4   0   0  38.393  76.787  1.24028       84.4      7.9      7.4     6.0
   47   3   1   3  38.549  77.098  1.23603      132.4     12.3     11.5     6.0
   48   1   3   4  39.016  78.033  1.22355       95.5      8.9      8.3     6.0
   49   2   5   2  39.356  78.712  1.21469       26.5      2.5      2.3     6.0
   50   2   4   3  39.701  79.401  1.20587      151.4     14.1     13.1     6.0
   51   1   5   3  40.387  80.775  1.18879       92.1      8.6      8.0     6.1
   52   2   6   0  41.146  82.291  1.17068      151.5     14.1     13.1     6.1
   53   4   2   1  41.618  83.235  1.15979       49.6      4.6      4.3     6.1
   54   4   0   2  42.575  85.151  1.13852       11.3      1.1      1.0     6.1
   55   4   1   2  43.113  86.225  1.12707       23.7      2.2      2.0     6.1
   56   3   5   1  43.203  86.405  1.12519       63.7      5.9      5.4     6.1
   57   1   1   5  44.06   88.12   1.10766       39.1      3.6      3.3     6.2
   58   0   2   5  44.286  88.571  1.10318       23.4      2.2      2.0     6.2
   59   4   2   2  44.721  89.441  1.09469       25.0      2.3      2.1     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)