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

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ZINCITE

5, t-wurtzite 2H

ZnO


Hexagonal  P 6(3)mc  Z = 2

R =0.012          NR =33

23 .3 .1993

Ref.Str.:

         Kisi E.H., Elcombe M.M. (1989)

         * Acta Cryst., C 45, 1867-1870

Reserv:

         Rietveld method.  Neutron data.      D.T.N.

                   Initial data from BDM-file 

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

             a =   3.25     alpha =   90.0 
             b =   3.25     beta  =   90.0 
             c =   5.2071   gamma =  120.0 

    Unit cell volume (cub. angs.) =    47.63

    Molar volume ( cub.cm/mol.) =    14.35

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

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

   1 0.3333  0.6667  0.0      0.55   Zn    = 1.00
   2 0.3333  0.6667  0.3817   0.55   O     = 1.00


  Co-ordinates for all atomic positions :

   No       NoP      x/a        y/b       z/c 

     1       1     0.3333     0.6667     0.0   
     2       2     0.3333     0.6667     0.3817
     3       1     0.6667     0.3333     0.5   
     4       2     0.6667     0.3333     0.8817


X-ray density (g/cm cub.)   =      5.67

MU (1/cm) =     287.618    Mass attenuation coefficient (cm**2/g) =     50.706

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

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

    1    Zn                  2.628        4
                                                 1.9876       2
                                                 1.9747       2
                                                 1.9753       2
                                                 1.9747       2
    2    O                   3.264       12
                                                 3.25         2
                                                 3.25         2
                                                 3.25         2
                                                 3.25         2
                                                 3.25         2
                                                 3.25         2
                                                 3.2091       2
                                                 3.2091       2
                                                 3.2095       2
                                                 3.2095       2
                                                 3.2091       2
                                                 3.2091       2

  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   0 15.883  31.766   0.178   23.92    6       29.0     5328.3
    2   0   0   2 17.209  34.418   0.192   20.1     2       47.3     3970.6
    3   1   0   1 18.125  36.251   0.202   17.94   12       31.9     9666.5
    4   1   0   2 23.767  47.535   0.262    9.79   12       20.6     2195.7
    5   1   1   0 28.295  56.591   0.308    6.59    6       43.5     3296.7
    6   1   0   3 31.425  62.851   0.338    5.21   12       33.0     2998.2
    7   2   0   0 33.185  66.371   0.355    4.63    6       19.4      459.4
    8   1   1   2 33.971  67.942   0.363    4.41   12       32.8     2509.5
    9   2   0   1 34.54   69.081   0.368    4.26   12       23.4     1232.6
   10   0   0   4 36.279  72.558   0.384    3.86    2       24.3      201.2
   11   2   0   2 38.476  76.953   0.404    3.47   12       14.9      405.0
   12   1   0   4 40.688  81.376   0.423    3.17   12       11.1      208.1
   13   2   0   3 44.802  89.603   0.457    2.84   12       24.5      900.4


  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   0   0  15.883  31.766  2.81458     5328.3     55.1     55.3     5.6
    2   0   0   2  17.209  34.418  2.60355     3970.6     41.1     41.1     5.7
    3   1   0   1  18.125  36.251  2.47602     9666.5    100.0    100.0     5.7
    4   1   0   2  23.767  47.535  1.91124     2195.7     22.7     22.5     5.7
    5   1   1   0  28.295  56.591  1.625       3296.7     34.1     33.3     5.8
    6   1   0   3  31.425  62.851  1.47737     2998.2     31.0     30.0     5.9
    7   2   0   0  33.185  66.371  1.40729      459.4      4.8      4.6     5.9
    8   1   1   2  33.971  67.942  1.37853     2509.5     26.0     24.9     5.9
    9   2   0   1  34.54   69.081  1.35855     1232.6     12.8     12.2     5.9
   10   0   0   4  36.279  72.558  1.30177      201.2      2.1      2.0     6.0
   11   2   0   2  38.476  76.953  1.23801      405.0      4.2      4.0     6.0
   12   1   0   4  40.688  81.376  1.18152      208.1      2.2      2.0     6.1
   13   2   0   3  44.802  89.603  1.09313      900.4      9.3      8.5     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)