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

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WURTZITE

10, t-wurtzite 2H, analogue

(Zn,Mn)Se


Hexagonal  P 6(3)mc  Z = 2

P6(3)mc

16 .5 .15

Ref.Str.:

         Yeh C, Lu Z W, Froyen S, Zunger A. (1995)

         * Physical Review, B52, 11052-11058

         L: $Zn0.71 Mn0.29 Se1$

         R: N.A.D.

                   Initial data from BDM-file 

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

             a =   4.064    alpha =   90.0 
             b =   4.064    beta  =   90.0 
             c =   6.643    gamma =  120.0 

    Unit cell volume (cub. angs.) =    95.02

    Molar volume ( cub.cm/mol.) =    28.62

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

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

   1 0.6667  0.3333  0.0      0.0    Zn    = 0.71, Mn    = 0.29
   2 0.6667  0.3333  0.375    0.0    Se    = 1.00


  Co-ordinates for all atomic positions :

   No       NoP      x/a        y/b       z/c 

     1       1     0.6667     0.3333     0.0   
     2       2     0.6667     0.3333     0.375 
     3       1     0.3333     0.6667     0.5   
     4       2     0.3333     0.6667     0.875 


X-ray density (g/cm cub.)   =      4.94

MU (1/cm) =     386.252    Mass attenuation coefficient (cm**2/g) =     78.227

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

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

    1   Zn   ,Mn             3.408        4
                                                 2.4911       2
                                                 2.4889       2
                                                 2.489        2
                                                 2.4889       2
    2    Se                  4.632       12
                                                 4.064        2
                                                 4.064        2
                                                 4.064        2
                                                 4.064        2
                                                 4.064        2
                                                 4.064        2
                                                 4.0666       2
                                                 4.0666       2
                                                 4.0667       2
                                                 4.0667       2
                                                 4.0666       2
                                                 4.0666       2

  X-ray diffraction powder data (II),  X-Ray W.L. =   1.78892(angs.):

  No   H   K   L   Theta 2*Theta    S       LPG   MF        F          I int.
                    ( degree )                                         *100

    1   1   0   0 14.723  29.446   0.142   28.15    6       54.4     5534.8
    2   0   0   2 15.622  31.245   0.151   24.78    2       76.2     3188.5
    3   1   0   1 16.715  33.43    0.161   21.41   12       35.8     3639.9
    4   1   0   2 21.733  43.466   0.207   11.99   12       34.9     1938.9
    5   1   1   0 26.116  52.232   0.246    7.9     6       92.6     4500.1
    6   1   0   3 28.505  57.01    0.267    6.48   12       71.8     4437.1
    7   2   0   0 30.55   61.099   0.284    5.54    6       43.7      702.3
    8   1   1   2 31.066  62.132   0.288    5.34   12       61.6     2693.0
    9   2   0   1 31.723  63.446   0.294    5.1    12       29.2      578.5
   10   0   0   4 32.588  65.175   0.301    4.81    2        8.0        6.8
   11   2   0   2 35.115  70.229   0.322    4.12   12       29.3      469.2
   12   1   0   4 36.551  73.102   0.333    3.81   12        4.0        8.3
   13   2   0   3 40.485  80.97    0.363    3.2    12       61.9     1627.8
   14   2   1   0 42.252  84.505   0.376    3.02   12       37.9      574.9
   15   2   1   1 43.294  86.589   0.383    2.93   24       25.7      514.3
   16   1   1   4 44.074  88.148   0.389    2.88   12        8.3       26.5


  X-ray diffraction powder data (I)...X-Ray wave length =  1.78892 (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  14.723  29.446  3.51953     5534.8    100.0    100.0     5.6
    2   0   0   2  15.622  31.245  3.3215      3188.5     57.6     57.5     5.6
    3   1   0   1  16.715  33.43   3.11        3639.9     65.8     65.5     5.7
    4   1   0   2  21.733  43.466  2.41563     1938.9     35.0     34.6     5.7
    5   1   1   0  26.116  52.232  2.032       4500.1     81.3     79.4     5.8
    6   1   0   3  28.505  57.01   1.87424     4437.1     80.2     77.8     5.8
    7   2   0   0  30.55   61.099  1.75976      702.3     12.7     12.2     5.8
    8   1   1   2  31.066  62.132  1.73336     2693.0     48.7     46.9     5.8
    9   2   0   1  31.723  63.446  1.70109      578.5     10.5     10.0     5.9
   10   2   0   2  35.115  70.229  1.555        469.2      8.5      8.1     5.9
   11   2   0   3  40.485  80.97   1.37769     1627.8     29.4     27.3     6.1
   12   2   1   0  42.252  84.505  1.33026      574.9     10.4      9.6     6.1
   13   2   1   1  43.294  86.589  1.30436      514.3      9.3      8.5     6.1

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)