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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STRONTIANITE

2, g-aragonite

SrCO(3)


Orthorhombic  P nma  Z = 4

R =0.073          NR =180

29 .6 .1993

Ref.Str.:

         Pannhorst W., Lohn J. (1969)

         * Z. Kristallogr., 131, 455-459

Reserv:

         S.O.L.

                   Initial data from BDM-file 

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

             a =   6.02     alpha =   90.0 
             b =   5.093    beta  =   90.0 
             c =   8.376    gamma =   90.0 

    Unit cell volume (cub. angs.) =   256.81

    Molar volume ( cub.cm/mol.) =    38.67

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

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

   1 0.7583  0.25    0.4159   0.77   Sr    = 1.00
   2 0.92    0.25    0.758    0.81   C     = 1.00
   3 0.905   0.25    0.913    1.1    O     = 1.00
   4 0.912   0.469   0.681    0.76   O     = 1.00


  Co-ordinates for all atomic positions :

   No       NoP      x/a        y/b       z/c 

     1       1     0.7583     0.25       0.4159
     2       2     0.92       0.25       0.758 
     3       3     0.905      0.25       0.913 
     4       4     0.912      0.469      0.681 
     5       1     0.7417     0.75       0.9159
     6       2     0.58       0.75       0.258 
     7       3     0.595      0.75       0.413 
     8       4     0.588      0.531      0.181 
     9       4     0.588      0.969      0.181 
    10       4     0.912      0.031      0.681 
    11       1     0.2583     0.25       0.0841
    12       2     0.42       0.25       0.742 
    13       3     0.405      0.25       0.587 
    14       4     0.412      0.469      0.819 
    15       1     0.2417     0.75       0.5841
    16       2     0.08       0.75       0.242 
    17       3     0.095      0.75       0.087 
    18       4     0.088      0.531      0.319 
    19       4     0.088      0.969      0.319 
    20       4     0.412      0.031      0.819 


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

MU (1/cm) =     298.888    Mass attenuation coefficient (cm**2/g) =     78.303

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

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

    1    Sr                  3.072        9
                                                 2.6515       4
                                                 2.7298       3
                                                 2.7298       3
                                                 2.6401       4
                                                 2.6401       4
                                                 2.6515       4
                                                 2.5647       3
                                                 2.578        4
                                                 2.578        4
    2    C                   1.872        3
                                                 1.3014       3
                                                 1.2893       4
                                                 1.2893       4
    3    O                   3.264        4
                                                 2.241        4
                                                 2.241        4
                                                 3.1491       3
                                                 3.1491       3
    4    O                   3.264        6
                                                 2.241        3
                                                 2.8623       4
                                                 2.2307       4
                                                 3.2243       4
                                                 3.2243       4
                                                 3.2274       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   0   1  9.066  18.132   0.102   77.62    4        5.5       14.1
    2   0   1   1 10.195  20.391   0.115   60.92    4       22.8      191.8
    3   0   0   2 10.598  21.197   0.119   56.22    2       22.2       83.9
    4   1   1   1 12.616  25.232   0.142   39.06    8       98.3     4576.3
    5   1   0   2 12.947  25.895   0.145   36.98    4      102.1     2340.4
    6   2   0   0 14.827  29.655   0.166   27.72    2       81.4      556.9
    7   1   1   2 15.684  31.367   0.175   24.58    8       18.1       97.7
    8   2   0   1 15.779  31.558   0.177   24.26    4       56.4      468.7
    9   2   1   0 17.293  34.586   0.193   19.89    4       52.6      333.7
   10   0   2   0 17.607  35.214   0.196   19.12    2      110.2      704.7
   11   1   0   3 17.705  35.41    0.197   18.89    4       33.4      127.8
   12   2   1   1 18.129  36.258   0.202   17.93    8       72.2     1134.8
   13   0   1   3 18.338  36.676   0.204   17.49    4      108.2     1240.8
   14   2   0   2 18.37   36.739   0.205   17.42    4       71.8      545.2
   15   1   1   3 19.855  39.711   0.22    14.67    8        3.9        2.7
   16   1   2   1 19.942  39.884   0.221   14.53    8       23.4       96.3
   17   2   1   2 20.46   40.921   0.227   13.72    8        0.9        0.1
   18   0   2   2 20.733  41.466   0.23    13.32    4       74.0      443.0
   19   0   0   4 21.583  43.166   0.239   12.18    2       60.8      136.6
   20   2   0   3 22.105  44.21    0.244   11.54    4       12.5       10.9
   21   1   2   2 22.113  44.225   0.244   11.53    8      115.8     1874.8
   22   1   0   4 22.921  45.843   0.253   10.63    4      115.2      855.2
   23   3   0   1 23.249  46.497   0.256   10.3     4       12.0        9.0
   24   2   2   0 23.342  46.683   0.257   10.2     4      105.2      685.5
   25   2   1   3 23.926  47.852   0.263    9.65    8      101.3     1200.6
   26   2   2   1 24.001  48.001   0.264    9.58    8       14.5       24.3
   27   1   1   4 24.696  49.392   0.271    8.98    8       19.6       41.6
   28   3   1   1 25.006  50.011   0.274    8.73    8       96.7      990.5
   29   3   0   2 25.192  50.384   0.276    8.58    4       95.9      478.7
   30   1   2   3 25.4    50.8     0.278    8.42    8       27.6       77.6
   31   2   2   2 25.901  51.803   0.284    8.05    8       41.7      170.1
   32   2   0   4 26.622  53.245   0.291    7.57    4       49.1      110.7
   33   3   1   2 26.854  53.708   0.293    7.42    8       15.6       21.8
   34   0   3   1 27.578  55.156   0.301    6.98    4       46.2       90.4
   35   3   0   3 28.211  56.422   0.307    6.63    4        2.6        0.3
   36   2   1   4 28.226  56.451   0.307    6.62    8        6.2        3.1
   37   0   2   4 28.441  56.881   0.309    6.51    4       43.2       73.7
   38   1   0   5 28.508  57.016   0.31     6.48    4       25.7       26.0
   39   1   3   1 28.706  57.411   0.312    6.38    8       69.3      371.8
   40   2   2   3 28.869  57.737   0.313    6.29    8        2.6        0.5
   41   0   1   5 28.95   57.9     0.314    6.25    4       33.2       41.8
   42   1   2   4 29.547  59.094   0.32     5.97    8       69.8      353.3
   43   3   1   3 29.757  59.514   0.322    5.88    8        1.8        0.2
   44   3   2   1 29.821  59.643   0.323    5.85    8        8.7        5.4
   45   1   1   5 30.045  60.089   0.325    5.75    8       70.9      350.9
   46   1   3   2 30.4    60.8     0.328    5.61    8       24.7       41.4
   47   4   0   0 30.785  61.569   0.332    5.45    2       57.5       54.7
   48   4   0   1 31.333  62.666   0.338    5.24    4       40.9       53.2
   49   2   3   0 31.394  62.788   0.338    5.22    4       14.9        7.0
   50   3   2   2 31.479  62.958   0.339    5.19    8       44.8      126.4
   51   2   0   5 31.751  63.502   0.342    5.09    4        6.4        1.2
   52   2   3   1 31.936  63.873   0.343    5.03    8       44.6      121.1
   53   0   3   3 32.075  64.149   0.345    4.98    4       78.5      186.1
   54   3   0   4 32.118  64.235   0.345    4.97    4       39.3       46.5
   55   4   1   0 32.255  64.511   0.346    4.92    4        1.9        0.1
   56   2   2   4 32.728  65.456   0.351    4.77    8       47.4      130.1
   57   4   1   1 32.79   65.58    0.352    4.75    8       53.1      162.2
   58   4   0   2 32.947  65.893   0.353    4.7     4       50.3       72.1
   59   1   3   3 33.108  66.216   0.355    4.65    8        6.9        2.7
   60   2   1   5 33.198  66.396   0.355    4.63    8       45.2      114.5
   61   0   0   6 33.489  66.978   0.358    4.54    2       82.5       93.7
   62   2   3   2 33.534  67.069   0.359    4.53    8       10.9        6.6
   63   3   1   4 33.556  67.112   0.359    4.52    8       13.9       10.7
   64   3   2   3 34.14   68.28    0.364    4.36    8        1.8        0.2
   65   4   1   2 34.367  68.735   0.366    4.3     8       14.1       10.3
   66   1   2   5 34.407  68.814   0.367    4.29    8       12.5        8.1
   67   1   0   6 34.501  69.002   0.368    4.27    4        8.8        2.0
   68   4   0   3 35.552  71.103   0.377    4.02    4       12.9        4.1
   69   1   1   6 35.892  71.784   0.381    3.94    8        1.4        0.1
   70   2   3   3 36.119  72.239   0.383    3.89    8       82.0      318.0
   71   4   2   0 36.478  72.957   0.386    3.82    4       80.2      149.0
   72   1   3   4 36.724  73.448   0.388    3.77    8        0.9        0.0
   73   3   0   5 36.797  73.594   0.389    3.76    4        7.0        1.1
   74   4   1   3 36.926  73.852   0.39     3.73    8       82.0      304.3
   75   3   3   1 36.97   73.94    0.39     3.73    8       82.3      305.9
   76   4   2   1 36.984  73.967   0.39     3.72    8        3.4        0.5
   77   0   4   0 37.227  74.454   0.393    3.68    2      112.6      141.4
   78   2   2   5 37.371  74.742   0.394    3.65    8       16.0       11.3
   79   2   0   6 37.462  74.923   0.395    3.64    4       79.5      139.4
   80   3   2   4 37.712  75.423   0.397    3.59    8       79.5      275.1
   81   3   1   5 38.154  76.308   0.401    3.52    8       78.5      262.9
   82   3   3   2 38.472  76.944   0.404    3.47    8       13.2        7.4
   83   4   2   2 38.486  76.971   0.404    3.47    8       29.1       35.7
   84   1   4   1 38.694  77.387   0.406    3.43    8        1.5        0.1
   85   2   1   6 38.811  77.622   0.407    3.42    8       19.6       15.9
   86   0   2   6 38.995  77.99    0.408    3.39    4      109.8      248.0
   87   4   0   4 39.072  78.143   0.409    3.38    4       35.4       25.6
   88   0   4   2 39.221  78.442   0.41     3.36    4       25.8       13.6
   89   2   3   4 39.621  79.242   0.414    3.3     8        2.1        0.2
   90   1   2   6 39.951  79.901   0.417    3.26    8        3.1        0.4
   91   1   4   2 40.175  80.351   0.419    3.23    8       64.8      164.7
   92   0   3   5 40.24   80.479   0.419    3.23    4       19.6        7.5
   93   5   0   1 40.266  80.533   0.42     3.22    4       17.1        5.7
   94   4   1   4 40.405  80.81    0.421    3.21    8        9.6        3.6
   95   3   3   3 40.937  81.875   0.425    3.14    8       13.2        6.7
   96   4   2   3 40.951  81.902   0.425    3.14    8       19.9       15.1
   97   1   0   7 41.021  82.042   0.426    3.14    4        2.9        0.2
   98   2   4   0 41.062  82.123   0.426    3.13    4       60.6       69.7
   99   1   3   5 41.188  82.377   0.427    3.12    8       65.6      162.9
  100   0   1   7 41.397  82.793   0.429    3.1     4       30.9       18.0
  101   2   4   1 41.55   83.101   0.431    3.08    8       17.3       11.2
  102   5   1   1 41.591  83.181   0.431    3.08    8       60.5      136.8
  103   5   0   2 41.735  83.469   0.432    3.06    4       57.9       62.3
  104   3   2   5 42.146  84.293   0.436    3.02    8        9.4        3.2
  105   3   0   6 42.234  84.469   0.436    3.02    4        7.1        0.9
  106   1   1   7 42.34   84.681   0.437    3.01    8       56.8      117.9
  107   1   4   3 42.618  85.236   0.44     2.98    8        9.8        3.5
  108   2   2   6 42.789  85.577   0.441    2.97    8       58.5      123.5
  109   2   4   2 43.011  86.021   0.443    2.95    8       40.9       59.9
  110   5   1   2 43.051  86.101   0.443    2.95    8       10.5        3.9
  111   4   3   0 43.155  86.31    0.444    2.94    4       11.5        2.4
  112   4   0   5 43.474  86.948   0.447    2.92    4        6.5        0.7
  113   3   1   6 43.549  87.097   0.447    2.91    8        0.9        0.0
  114   4   3   1 43.64   87.281   0.448    2.91    8       35.5       44.4
  115   2   0   7 43.847  87.695   0.45     2.89    4       10.3        1.9
  116   2   3   5 44.014  88.027   0.451    2.88    8       40.7       57.9
  117   5   0   3 44.164  88.329   0.452    2.87    4       14.8        3.8
  118   3   3   4 44.343  88.686   0.454    2.86    8       10.1        3.5
  119   4   2   4 44.356  88.713   0.454    2.86    8       36.2       45.4
  120   4   1   5 44.786  89.571   0.457    2.84    8       36.5       45.9


  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   1   1  10.195  20.391  4.35169      191.8      4.2      4.2     5.6
    2   0   0   2  10.598  21.197  4.188         83.9      1.8      1.8     5.6
    3   1   1   1  12.616  25.232  3.52673     4576.3    100.0    100.0     5.6
    4   1   0   2  12.947  25.895  3.4379      2340.4     51.1     51.1     5.6
    5   2   0   0  14.827  29.655  3.01         556.9     12.2     12.1     5.6
    6   1   1   2  15.684  31.367  2.84947       97.7      2.1      2.1     5.6
    7   2   0   1  15.779  31.558  2.83265      468.7     10.2     10.2     5.6
    8   2   1   0  17.293  34.586  2.59128      333.7      7.3      7.2     5.7
    9   0   2   0  17.607  35.214  2.5465       704.7     15.4     15.3     5.7
   10   1   0   3  17.705  35.41   2.53285      127.8      2.8      2.8     5.7
   11   2   1   1  18.129  36.258  2.47552     1134.8     24.8     24.6     5.7
   12   0   1   3  18.338  36.676  2.44825     1240.8     27.1     26.9     5.7
   13   2   0   2  18.37   36.739  2.4442       545.2     11.9     11.8     5.7
   14   1   2   1  19.942  39.884  2.25844       96.3      2.1      2.1     5.7
   15   0   2   2  20.733  41.466  2.17584      443.0      9.7      9.5     5.7
   16   0   0   4  21.583  43.166  2.094        136.6      3.0      2.9     5.7
   17   1   2   2  22.113  44.225  2.04629     1885.7     41.2     40.5     5.7
   18   1   0   4  22.921  45.843  1.97777      855.2     18.7     18.3     5.7
   19   2   2   0  23.342  46.683  1.9441       685.5     15.0     14.7     5.7
   20   2   1   3  23.926  47.852  1.89931     1200.6     26.2     25.7     5.7
   21   3   1   1  25.006  50.011  1.82226      990.5     21.6     21.1     5.7
   22   3   0   2  25.192  50.384  1.80966      478.7     10.5     10.2     5.8
   23   1   2   3  25.4    50.8    1.7958        77.6      1.7      1.7     5.8
   24   2   2   2  25.901  51.803  1.76337      170.1      3.7      3.6     5.8
   25   2   0   4  26.622  53.245  1.71895      110.7      2.4      2.4     5.8
   26   0   3   1  27.578  55.156  1.66384       90.4      2.0      1.9     5.8
   27   0   2   4  28.441  56.881  1.61739       73.7      1.6      1.6     5.8
   28   1   3   1  28.706  57.411  1.60371      371.8      8.1      7.9     5.8
   29   1   2   4  29.547  59.094  1.562        353.3      7.7      7.4     5.8
   30   1   1   5  30.045  60.089  1.53848      350.9      7.7      7.4     5.8
   31   4   0   0  30.785  61.569  1.505         54.7      1.2      1.1     5.8
   32   4   0   1  31.333  62.666  1.48128       53.2      1.2      1.1     5.8
   33   3   2   2  31.479  62.958  1.47512      126.4      2.8      2.6     5.9
   34   2   3   1  31.936  63.873  1.45617      121.1      2.6      2.5     5.9
   35   0   3   3  32.075  64.149  1.45056      186.1      4.1      3.9     5.9
   36   3   0   4  32.118  64.235  1.44882       46.5      1.0      1.0     5.9
   37   2   2   4  32.728  65.456  1.42473      130.1      2.8      2.7     5.9
   38   4   1   1  32.79   65.58   1.42234      162.2      3.5      3.4     5.9
   39   4   0   2  32.947  65.893  1.41632       72.1      1.6      1.5     5.9
   40   2   1   5  33.198  66.396  1.40682      114.5      2.5      2.4     5.9
   41   0   0   6  33.489  66.978  1.396         93.7      2.0      2.0     5.9
   42   2   3   3  36.119  72.239  1.30674      318.0      6.9      6.6     5.9
   43   4   2   0  36.478  72.957  1.29564      149.0      3.3      3.1     6.0
   44   4   1   3  36.926  73.852  1.28212      304.3      6.6      6.3     6.0
   45   3   3   1  36.97   73.94   1.28082      306.4      6.7      6.3     6.0
   46   0   4   0  37.227  74.454  1.27325      141.4      3.1      2.9     6.0
   47   2   0   6  37.462  74.923  1.26643      139.4      3.0      2.9     6.0
   48   3   2   4  37.712  75.423  1.25927      275.1      6.0      5.6     6.0
   49   3   1   5  38.154  76.308  1.24685      262.9      5.7      5.4     6.0
   50   0   2   6  38.995  77.99   1.22412      248.0      5.4      5.1     6.0
   51   1   4   2  40.175  80.351  1.19399      164.7      3.6      3.3     6.0
   52   2   4   0  41.062  82.123  1.17265       69.7      1.5      1.4     6.1
   53   1   3   5  41.188  82.377  1.16968      162.9      3.6      3.3     6.1
   54   5   1   1  41.591  83.181  1.16041      136.8      3.0      2.8     6.1
   55   5   0   2  41.735  83.469  1.15713       62.3      1.4      1.3     6.1
   56   1   1   7  42.34   84.681  1.14364      117.9      2.6      2.4     6.1
   57   2   2   6  42.789  85.577  1.13394      123.5      2.7      2.5     6.1
   58   2   4   2  43.011  86.021  1.12922       59.9      1.3      1.2     6.1
   59   2   3   5  44.014  88.027  1.10859       57.9      1.3      1.2     6.2
   60   4   2   4  44.356  88.713  1.10179       49.0      1.1      1.0     6.2
   61   4   1   5  44.786  89.571  1.09344       45.9      1.0      0.9     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)