Institute of Experimental Mineralogy
                 Russian Academy of Sciences
     -------------------------------------------------
           142432, Chernogolovka, Moscow district
             A.V. Chichagov  +7(496)52-22320

                            ***

          ***      W W W - X R A Y P O L       ***
                  ***********************
FORSTERITE

39, t-olivine, f-olivine, s-forsterite

(Mg, Fe)(2)SiO(4)


Orthorhombic  P nma  Z = 4

R =0.017          NR =955

14 .3 .1994

Ref.Str.:

         Khisina N.R., Belokoneva E.L., Vasiliev D.G., Simonov M.A. (1984)

         * Dokl. Akad. Nauk SSSR, 276, 873-876

Reserv:

         In original - olivine[25].       D.T.N.

                   Initial data from BDM-file 

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

             a =  10.252    alpha =   90.0 
             b =   6.012    beta  =   90.0 
             c =   4.773    gamma =   90.0 

    Unit cell volume (cub. angs.) =   294.18

    Molar volume ( cub.cm/mol.) =    44.3 

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

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

   1 0.0     0.0     0.0      0.0    Fe    = 0.1 , Mg    = 0.9 
   2 0.2222  0.25    0.4895   0.0    Fe    = 0.1 , Mg    = 1.0 
   3 0.0943  0.75    0.4266   0.0    Si    = 1.00
   4 0.4086  0.25    0.2657   0.0    O     = 1.00
   5 0.4477  0.75    0.2206   0.0    O     = 1.00
   6 0.1631  0.5336  0.2785   0.0    O     = 1.00


  Co-ordinates for all atomic positions :

   No       NoP      x/a        y/b       z/c 

     1       1     0.0        0.0        0.0   
     2       2     0.2222     0.25       0.4895
     3       3     0.0943     0.75       0.4266
     4       4     0.4086     0.25       0.2657
     5       5     0.4477     0.75       0.2206
     6       6     0.1631     0.5336     0.2785
     7       1     0.5        0.0        0.5   
     8       2     0.2778     0.75       0.9895
     9       3     0.4057     0.25       0.9266
    10       4     0.0914     0.75       0.7657
    11       5     0.0523     0.25       0.7206
    12       6     0.3369     0.4664     0.7785
    13       1     0.5        0.5        0.5   
    14       6     0.3369     0.0336     0.7785
    15       1     0.0        0.5        0.0   
    16       6     0.1631     0.9664     0.2785
    17       2     0.7222     0.25       0.0105
    18       3     0.5943     0.75       0.0734
    19       4     0.9086     0.25       0.2343
    20       5     0.9477     0.75       0.2794
    21       6     0.6631     0.5336     0.2215
    22       2     0.7778     0.75       0.5105
    23       3     0.9057     0.25       0.5734
    24       4     0.5914     0.75       0.7343
    25       5     0.5523     0.25       0.7794
    26       6     0.8369     0.4664     0.7215
    27       6     0.8369     0.0336     0.7215
    28       6     0.6631     0.9664     0.2215


X-ray density (g/cm cub.)   =      3.37

MU (1/cm) =     172.541    Mass attenuation coefficient (cm**2/g) =     51.168

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

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

    1   Fe   ,Mg             2.592        6
                                                 2.0947       4
                                                 2.0796       5
                                                 2.1456       6
                                                 2.0947       4
                                                 2.0796       5
                                                 2.1456       6
    2   Fe   ,Mg             2.592        6
                                                 2.1893       4
                                                 2.0708       6
                                                 2.0617       5
                                                 2.2312       6
                                                 2.2312       6
                                                 2.0708       6
    3    Si                  2.1          4
                                                 1.6401       6
                                                 1.6188       4
                                                 1.6401       6
                                                 1.6591       5
    4    O                   3.264       12
                                                 3.0402       5
                                                 3.0402       5
                                                 3.0406       6
                                                 2.8677       6
                                                 2.7641       6
                                                 2.8677       6
                                                 2.7641       6
                                                 3.0406       6
                                                 3.124        6
                                                 2.8604       5
                                                 2.7492       5
                                                 3.124        6
    5    O                   3.264       10
                                                 3.0402       4
                                                 3.0402       4
                                                 3.2066       6
                                                 2.9411       6
                                                 2.9411       6
                                                 3.2066       6
                                                 2.563        6
                                                 2.8604       4
                                                 2.7492       4
                                                 2.563        6
    6    O                   3.264       10
                                                 3.0406       4
                                                 3.2066       5
                                                 2.7641       4
                                                 2.8677       4
                                                 2.9411       5
                                                 3.0056       6
                                                 3.0056       6
                                                 2.602        6
                                                 3.124        4
                                                 2.563        5

  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   2   0   0  8.643  17.285   0.098   85.63    2       25.5      128.6
    2   1   0   1 10.254  20.508   0.116   60.2     4        6.3       10.9
    3   2   1   0 11.389  22.779   0.128   48.4     4       44.7      447.3
    4   0   1   1 11.891  23.783   0.134   44.22    4       28.0      160.8
    5   1   1   1 12.67   25.339   0.142   38.71    8       25.8      237.4
    6   2   0   1 12.739  25.478   0.143   38.27    4       25.9      118.4
    7   2   1   1 14.775  29.551   0.166   27.93    8       14.5       54.2
    8   0   2   0 14.848  29.695   0.166   27.64    2       51.0      166.1
    9   3   0   1 16.094  32.189   0.18    23.24    4       76.4      627.7
   10   2   2   0 17.281  34.562   0.193   19.92    4       18.6       31.9
   11   4   0   0 17.49   34.98    0.195   19.4     2        8.5        3.2
   12   3   1   1 17.782  35.564   0.198   18.71    8       66.9      773.6
   13   1   2   1 18.181  36.361   0.203   17.82    8       74.4      912.8
   14   0   0   2 18.83   37.661   0.21    16.5     2       21.3       17.3
   15   4   1   0 19.069  38.138   0.212   16.04    4       42.1      131.7
   16   1   0   2 19.353  38.707   0.215   15.53    4       35.5       90.2
   17   2   2   1 19.759  39.518   0.219   14.83    8       49.6      336.9
   18   4   0   1 19.946  39.891   0.221   14.52    4       60.2      242.9
   19   1   1   2 20.812  41.624   0.231   13.21    8       36.0      158.1
   20   2   0   2 20.857  41.713   0.231   13.15    4        2.0        0.2
   21   4   1   1 21.37   42.741   0.237   12.45    8        0.3        0.0
   22   3   2   1 22.18   44.359   0.245   11.45    8       18.6       36.5
   23   2   1   2 22.234  44.467   0.246   11.39    8        6.4        4.3
   24   3   0   2 23.184  46.367   0.256   10.36    4       22.6       24.4
   25   4   2   0 23.263  46.526   0.256   10.28    4       19.5       18.1
   26   5   0   1 24.134  48.268   0.265    9.46    4       33.0       47.6
   27   0   2   2 24.338  48.676   0.268    9.28    4       20.8       18.6
   28   2   3   0 24.375  48.749   0.268    9.25    4        5.8        1.5
   29   3   1   2 24.457  48.913   0.269    9.18    8        2.8        0.7
   30   0   3   1 24.638  49.275   0.271    9.03    4        8.2        2.8
   31   1   2   2 24.766  49.532   0.272    8.92    8       10.6        9.3
   32   1   3   1 25.062  50.123   0.275    8.68    8       25.5       52.1
   33   4   2   1 25.255  50.51    0.277    8.53    8        5.2        2.1
   34   5   1   1 25.371  50.742   0.278    8.44    8       23.9       44.5
   35   2   2   2 26.018  52.037   0.285    7.97    8       95.4      670.6
   36   4   0   2 26.169  52.338   0.286    7.87    4       73.9      198.7
   37   2   3   1 26.304  52.608   0.288    7.78    8       23.7       40.5
   38   6   0   0 26.796  53.591   0.293    7.45    2        5.2        0.5
   39   4   1   2 27.339  54.678   0.298    7.12    8       46.1      139.9
   40   6   1   0 27.947  55.895   0.304    6.77    4       66.2      137.1
   41   3   2   2 28.017  56.034   0.305    6.74    8       19.7       24.2
   42   3   3   1 28.289  56.577   0.308    6.59    8       56.7      195.5
   43   6   0   1 28.609  57.217   0.311    6.42    4       17.9        9.5
   44   5   2   1 28.851  57.702   0.313    6.3     8       30.2       53.3
   45   4   3   0 29.204  58.408   0.317    6.13    4       58.0       95.3
   46   1   0   3 29.337  58.674   0.318    6.07    4       33.6       31.7
   47   5   0   2 29.689  59.377   0.321    5.91    4        7.0        1.3
   48   6   1   1 29.714  59.428   0.322    5.9     8        2.8        0.4
   49   0   1   3 30.054  60.108   0.325    5.75    4       21.5       12.3
   50   1   1   3 30.426  60.851   0.329    5.59    8       28.3       41.3
   51   2   0   3 30.46   60.919   0.329    5.58    4       30.1       23.4
   52   1   3   2 30.498  60.996   0.329    5.57    8       25.2       32.7
   53   4   2   2 30.668  61.336   0.331    5.5     8       28.0       39.7
   54   5   1   2 30.77   61.539   0.332    5.46    8       31.4       49.7
   55   0   4   0 30.83   61.66    0.333    5.43    2      148.8      278.1
   56   4   3   1 30.925  61.85    0.334    5.4     8       11.4        6.5
   57   6   2   0 31.235  62.47    0.337    5.28    4      125.0      380.9
   58   2   1   3 31.525  63.05    0.339    5.17    8       16.6       13.2
   59   2   3   2 31.596  63.192   0.34     5.15    8       16.0       12.2
   60   3   0   3 32.279  64.559   0.347    4.91    4       39.0       34.5
   61   2   4   0 32.281  64.562   0.347    4.91    4       19.5        8.6
   62   1   4   1 32.856  65.712   0.352    4.73    8        1.8        0.1
   63   6   2   1 32.893  65.787   0.353    4.72    8        8.9        3.5
   64   3   1   3 33.312  66.624   0.356    4.59    8       43.9       82.0
   65   7   0   1 33.377  66.754   0.357    4.57    4       74.4      117.0
   66   3   3   2 33.381  66.762   0.357    4.57    8        5.1        1.1
   67   1   2   3 33.567  67.134   0.359    4.52    8       43.9       80.6
   68   6   0   2 33.672  67.344   0.36     4.49    4       11.3        2.6
   69   5   2   2 33.893  67.787   0.362    4.43    8       11.0        5.0
   70   2   4   1 33.912  67.824   0.362    4.42    8        8.9        3.3
   71   5   3   1 34.137  68.274   0.364    4.36    8       16.3       10.7
   72   7   1   1 34.393  68.786   0.367    4.3     8       12.5        6.2
   73   2   2   3 34.612  69.224   0.369    4.24    8       67.8      179.9
   74   6   1   2 34.684  69.368   0.369    4.22    8       19.4       14.7
   75   4   0   3 34.739  69.479   0.37     4.21    4       56.4       61.9
   76   3   4   1 35.638  71.277   0.378    4.0     8       52.3      101.2
   77   4   1   3 35.737  71.475   0.379    3.98    8       34.8       44.4
   78   4   3   2 35.804  71.608   0.38     3.96    8       23.7       20.5
   79   3   2   3 36.323  72.647   0.384    3.85    8        4.1        0.6
   80   6   3   0 36.329  72.659   0.385    3.85    4       53.2       50.4
   81   4   4   0 36.45   72.899   0.386    3.83    4       16.1        4.6
   82   8   0   0 36.947  73.894   0.39     3.73    2       13.8        1.6
   83   0   4   2 37.277  74.553   0.393    3.67    4       38.0       24.4
   84   7   2   1 37.365  74.731   0.394    3.65    8       18.6       11.6
   85   1   4   2 37.612  75.223   0.396    3.61    8       22.2       16.4
   86   6   2   2 37.647  75.294   0.396    3.6     8       23.0       17.7
   87   5   0   3 37.793  75.585   0.398    3.58    4       18.4        5.6
   88   6   3   1 37.88   75.761   0.399    3.56    8       18.4       11.2
   89   8   1   0 37.921  75.843   0.399    3.56    4       13.0        2.8
   90   4   4   1 37.999  75.998   0.4      3.54    8       25.9       21.9
   91   7   0   2 38.104  76.207   0.401    3.53    4       19.9        6.5
   92   0   3   3 38.183  76.366   0.401    3.51    4       37.0       22.2
   93   8   0   1 38.489  76.978   0.404    3.47    4       13.3        2.9
   94   1   3   3 38.515  77.031   0.404    3.46    8       16.1        8.2
   95   2   4   2 38.611  77.222   0.405    3.45    8        0.7        0.0
   96   4   2   3 38.668  77.336   0.406    3.44    8       19.6       12.2
   97   5   1   3 38.76   77.519   0.406    3.42    8        8.5        2.3
   98   5   3   2 38.824  77.649   0.407    3.42    8       30.8       30.0
   99   7   1   2 39.068  78.136   0.409    3.38    8       12.1        4.6
  100   8   1   1 39.451  78.902   0.412    3.33    8       10.4        3.3
  101   2   3   3 39.507  79.015   0.413    3.32    8        7.5        1.7
  102   0   0   4 40.206  80.411   0.419    3.23    2       84.4       53.1
  103   3   4   2 40.259  80.519   0.419    3.22    8       18.5       10.2
  104   1   0   4 40.533  81.066   0.422    3.19    4       10.3        1.6
  105   8   2   0 40.8    81.6     0.424    3.16    4       25.1        9.2
  106   5   4   1 40.966  81.932   0.426    3.14    8       27.7       22.3
  107   3   3   3 41.147  82.293   0.427    3.12    8       38.7       43.1
  108   2   5   0 41.148  82.296   0.427    3.12    4       37.7       20.6
  109   0   5   1 41.348  82.696   0.429    3.1     4       30.1       13.0
  110   6   0   3 41.417  82.834   0.429    3.09    4        1.8        0.0
  111   1   1   4 41.483  82.966   0.43     3.09    8        9.2        2.4
  112   2   0   4 41.513  83.026   0.43     3.08    4        0.2        0.0
  113   5   2   3 41.623  83.246   0.431    3.07    8       44.2       55.4
  114   1   5   1 41.674  83.348   0.432    3.07    8       12.3        4.3
  115   7   2   2 41.926  83.852   0.434    3.05    8       30.8       26.6
  116   7   3   1 42.153  84.307   0.436    3.02    8       14.3        5.7
  117   8   2   1 42.303  84.606   0.437    3.01    8       27.6       21.2
  118   6   1   3 42.363  84.726   0.437    3.01    8       33.2       30.6
  119   6   3   2 42.427  84.853   0.438    3.0     8       20.2       11.4
  120   2   1   4 42.459  84.918   0.438    3.0     8        9.1        2.3
  121   4   4   2 42.542  85.084   0.439    2.99    8       47.6       62.7
  122   2   5   1 42.649  85.298   0.44     2.98    8        1.9        0.1
  123   8   0   2 43.02   86.04    0.443    2.95    4       48.0       31.4
  124   6   4   0 43.043  86.087   0.443    2.95    4       14.5        2.9
  125   3   0   4 43.138  86.275   0.444    2.94    4       21.2        6.1
  126   4   3   3 43.422  86.843   0.446    2.92    8       39.5       42.3
  127   8   1   2 43.962  87.924   0.451    2.89    8       21.6       12.4
  128   0   2   4 43.99   87.98    0.451    2.89    4        3.0        0.1
  129   9   0   1 44.043  88.087   0.451    2.88    4       10.8        1.6
  130   3   1   4 44.079  88.159   0.452    2.88    8        2.3        0.1
  131   3   5   1 44.269  88.538   0.453    2.87    8       45.8       55.6
  132   1   2   4 44.313  88.627   0.453    2.87    8       33.0       28.9
  133   6   4   1 44.537  89.074   0.455    2.85    8       11.7        3.6
  134   9   1   1 44.984  89.968   0.459    2.83    8       19.4        9.8


  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   2   0   0   8.643  17.285  5.126        128.6     14.1     14.3     5.6
    2   1   0   1  10.254  20.508  4.32703       10.9      1.2      1.2     5.6
    3   2   1   0  11.389  22.779  3.90064      447.3     49.0     49.6     5.6
    4   0   1   1  11.891  23.783  3.73816      160.8     17.6     17.8     5.6
    5   1   1   1  12.67   25.339  3.51198      237.4     26.0     26.3     5.6
    6   2   0   1  12.739  25.478  3.49315      118.4     13.0     13.1     5.6
    7   2   1   1  14.775  29.551  3.02034       54.2      5.9      6.0     5.6
    8   0   2   0  14.848  29.695  3.006        166.1     18.2     18.3     5.6
    9   3   0   1  16.094  32.189  2.77858      627.7     68.8     69.0     5.6
   10   2   2   0  17.281  34.562  2.59303       31.9      3.5      3.5     5.7
   11   3   1   1  17.782  35.564  2.52223      773.6     84.7     84.8     5.7
   12   1   2   1  18.181  36.361  2.46874      912.8    100.0    100.0     5.7
   13   0   0   2  18.83   37.661  2.3865        17.3      1.9      1.9     5.7
   14   4   1   0  19.069  38.138  2.35769      131.7     14.4     14.4     5.7
   15   1   0   2  19.353  38.707  2.32435       90.2      9.9      9.9     5.7
   16   2   2   1  19.759  39.518  2.2785       336.9     36.9     36.8     5.7
   17   4   0   1  19.946  39.891  2.25804      242.9     26.6     26.5     5.7
   18   1   1   2  20.812  41.624  2.16797      158.1     17.3     17.2     5.7
   19   3   2   1  22.18   44.359  2.04042       36.5      4.0      4.0     5.7
   20   3   0   2  23.184  46.367  1.95661       24.4      2.7      2.6     5.7
   21   4   2   0  23.263  46.526  1.95032       18.1      2.0      2.0     5.7
   22   5   0   1  24.134  48.268  1.88392       47.6      5.2      5.1     5.7
   23   0   2   2  24.338  48.676  1.86908       18.6      2.0      2.0     5.7
   24   1   2   2  24.766  49.532  1.83877        9.3      1.0      1.0     5.7
   25   1   3   1  25.062  50.123  1.81844       52.1      5.7      5.6     5.7
   26   5   1   1  25.371  50.742  1.79773       44.5      4.9      4.8     5.8
   27   2   2   2  26.018  52.037  1.75599      670.6     73.5     72.2     5.8
   28   4   0   2  26.169  52.338  1.74658      198.7     21.8     21.4     5.8
   29   2   3   1  26.304  52.608  1.73826       40.5      4.4      4.4     5.8
   30   4   1   2  27.339  54.678  1.67723      139.9     15.3     15.0     5.8
   31   6   1   0  27.947  55.895  1.64358      137.1     15.0     14.7     5.8
   32   3   2   2  28.017  56.034  1.63983       24.2      2.7      2.6     5.8
   33   3   3   1  28.289  56.577  1.62537      195.5     21.4     20.9     5.8
   34   6   0   1  28.609  57.217  1.60869        9.5      1.0      1.0     5.8
   35   5   2   1  28.851  57.702  1.59633       53.3      5.8      5.7     5.8
   36   4   3   0  29.204  58.408  1.57871       95.3     10.4     10.2     5.8
   37   1   0   3  29.337  58.674  1.57218       31.7      3.5      3.4     5.8
   38   0   1   3  30.054  60.108  1.53805       12.3      1.3      1.3     5.8
   39   1   1   3  30.426  60.851  1.52103       41.3      4.5      4.4     5.8
   40   2   0   3  30.46   60.919  1.51949       23.4      2.6      2.5     5.8
   41   1   3   2  30.498  60.996  1.51777       32.7      3.6      3.5     5.8
   42   4   2   2  30.668  61.336  1.51017       39.7      4.4      4.2     5.8
   43   5   1   2  30.77   61.539  1.50566       49.7      5.4      5.3     5.8
   44   0   4   0  30.83   61.66   1.503        278.1     30.5     29.6     5.8
   45   6   2   0  31.235  62.47   1.48546      380.9     41.7     40.4     5.8
   46   2   1   3  31.525  63.05   1.47317       13.2      1.4      1.4     5.9
   47   2   3   2  31.596  63.192  1.4702        12.2      1.3      1.3     5.9
   48   3   0   3  32.279  64.559  1.44234       43.1      4.7      4.6     5.9
   49   3   1   3  33.312  66.624  1.40255       82.0      9.0      8.6     5.9
   50   7   0   1  33.377  66.754  1.40014      118.1     12.9     12.5     5.9
   51   1   2   3  33.567  67.134  1.39314       80.6      8.8      8.5     5.9
   52   5   3   1  34.137  68.274  1.37262       10.7      1.2      1.1     5.9
   53   2   2   3  34.612  69.224  1.35609      179.9     19.7     18.9     5.9
   54   6   1   2  34.684  69.368  1.35362       14.7      1.6      1.5     5.9
   55   4   0   3  34.739  69.479  1.35174       61.9      6.8      6.5     5.9
   56   3   4   1  35.638  71.277  1.32199      101.2     11.1     10.6     5.9
   57   4   1   3  35.737  71.475  1.31881       44.4      4.9      4.6     5.9
   58   4   3   2  35.804  71.608  1.31668       20.5      2.3      2.1     5.9
   59   6   3   0  36.329  72.659  1.30021       50.4      5.5      5.3     6.0
   60   0   4   2  37.277  74.553  1.27179       24.4      2.7      2.5     6.0
   61   7   2   1  37.365  74.731  1.26921       11.6      1.3      1.2     6.0
   62   1   4   2  37.612  75.223  1.26212       16.4      1.8      1.7     6.0
   63   6   2   2  37.647  75.294  1.26111       17.7      1.9      1.8     6.0
   64   6   3   1  37.88   75.761  1.2545        11.2      1.2      1.2     6.0
   65   4   4   1  37.999  75.998  1.25118       21.9      2.4      2.3     6.0
   66   0   3   3  38.183  76.366  1.24605       22.2      2.4      2.3     6.0
   67   1   3   3  38.515  77.031  1.23695       11.1      1.2      1.1     6.0
   68   4   2   3  38.668  77.336  1.23283       12.2      1.3      1.3     6.0
   69   5   3   2  38.824  77.649  1.22864       30.0      3.3      3.1     6.0
   70   0   0   4  40.206  80.411  1.19325       53.1      5.8      5.5     6.0
   71   3   4   2  40.259  80.519  1.19193       10.2      1.1      1.0     6.1
   72   8   2   0  40.8    81.6    1.17885        9.2      1.0      0.9     6.1
   73   5   4   1  40.966  81.932  1.1749        22.3      2.4      2.3     6.1
   74   3   3   3  41.147  82.293  1.17066       63.7      7.0      6.5     6.1
   75   0   5   1  41.348  82.696  1.16597       13.0      1.4      1.3     6.1
   76   5   2   3  41.623  83.246  1.15967       55.4      6.1      5.6     6.1
   77   7   2   2  41.926  83.852  1.15281       26.6      2.9      2.7     6.1
   78   8   2   1  42.303  84.606  1.14446       21.2      2.3      2.2     6.1
   79   6   1   3  42.363  84.726  1.14314       30.6      3.3      3.1     6.1
   80   6   3   2  42.427  84.853  1.14176       11.4      1.2      1.2     6.1
   81   4   4   2  42.542  85.084  1.13925       62.7      6.9      6.4     6.1
   82   8   0   2  43.02   86.04   1.12902       34.3      3.8      3.5     6.1
   83   4   3   3  43.422  86.843  1.12063       42.3      4.6      4.3     6.1
   84   8   1   2  43.962  87.924  1.10962       12.6      1.4      1.3     6.2
   85   3   5   1  44.269  88.538  1.10351       55.6      6.1      5.6     6.2
   86   1   2   4  44.313  88.627  1.10263       28.9      3.2      2.9     6.2
   87   9   1   1  44.984  89.968  1.08964        9.8      1.1      1.0     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)