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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GALLITE

6, t-chalcopyrite, analogue

Ag(Ga,In)Se(2)


Tetragonal  I 4(-)2d  Z = 1

I4(-)2d

24 .4 .19

Ref.Str.:

         Marenkin S.F., Rybakov V.B., Kuz'micheva G.M., Shcherbakov S.I.,

         Shevyrdyaeva G.S., Chizhikov V.I., Panyutin V.L. (2003)

         * Neorgan. Materialy, 39, 1193-1199

         L: $Ag1 Ga3+0.665 In3+0.335 Se2$

         R: N.A.D.

                   Initial data from BDM-file 

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

             a =   6.0138   alpha =   90.0 
             b =   6.0138   beta  =   90.0 
             c =  11.1238   gamma =   90.0 

    Unit cell volume (cub. angs.) =   402.3 

    Molar volume ( cub.cm/mol.) =   242.32

  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    Ag    = 1.00
   2 0.0     0.0     0.5      0.0    Ga    = 0.67, In    = 0.34
   3 0.2737  0.25    0.125    0.0    Se    = 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     0.0        0.0        0.5   
     3       3     0.2737     0.25       0.125 
     4       3     0.25       0.7263     0.875 
     5       3     0.7263     0.75       0.125 
     6       3     0.75       0.2737     0.875 
     7       1     0.5        0.5        0.5   
     8       2     0.5        0.5        0.0   
     9       3     0.2263     0.25       0.625 
    10       3     0.25       0.7737     0.375 
    11       3     0.7737     0.75       0.625 
    12       3     0.75       0.2263     0.375 
    13       1     0.0        0.5        0.25  
    14       2     0.0        0.5        0.75  
    15       1     0.5        0.0        0.75  
    16       2     0.5        0.0        0.25  


X-ray density (g/cm cub.)   =      5.79

MU (1/cm) =    1162.416    Mass attenuation coefficient (cm**2/g) =    200.869

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

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

    1    Ag                  3.672        4
                                                 2.6274       3
                                                 2.6274       3
                                                 2.6274       3
                                                 2.6274       3
    2   Ga   ,In             3.876        4
                                                 2.4588       3
                                                 2.4588       3
                                                 2.4588       3
                                                 2.4588       3
    3    Se                  4.632       12
                                                 3.9948       3
                                                 4.2039       3
                                                 4.0558       3
                                                 4.0558       3
                                                 4.4585       3
                                                 4.4585       3
                                                 3.9948       3
                                                 4.2039       3
                                                 4.2039       3
                                                 3.9948       3
                                                 3.9948       3
                                                 4.2039       3

  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   1  9.734  19.469   0.095   67.04    8        8.5       24.2
    2   1   1   0 12.142  24.285   0.118   42.33    4        0.0        0.0
    3   1   1   2 15.354  30.707   0.148   25.73    8      374.0    17789.4
    4   1   0   3 16.463  32.926   0.158   22.13    8       42.4      197.1
    5   2   0   0 17.306  34.611   0.166   19.85    4       63.7      199.1
    6   0   0   4 18.762  37.524   0.18    16.63    2       57.9       68.8
    7   2   0   2 19.765  39.529   0.189   14.82    8        4.8        1.7
    8   2   1   1 20.009  40.017   0.191   14.42   16       51.4      376.1
    9   2   1   3 24.259  48.517   0.23     9.35   16       31.0       88.7
   10   2   2   0 24.878  49.756   0.235    8.83    4      453.0     4478.2
   11   1   0   5 25.384  50.767   0.24     8.43    8       36.6       55.9
   12   2   0   4 25.983  51.967   0.245    8.0     8      450.8     8031.8
   13   3   0   1 26.961  53.923   0.253    7.35    8       63.9      148.4
   14   3   1   0 28.056  56.113   0.263    6.71    8        8.5        2.4
   15   3   1   2 29.807  59.613   0.278    5.86   16      301.7     5270.9
   16   3   0   3 30.48   60.96    0.284    5.57    8       21.6       12.8
   17   2   1   5 31.452  62.903   0.292    5.2    16       28.2       40.8
   18   1   1   6 31.757  63.514   0.294    5.09    8      299.3     2253.7
   19   2   2   4 31.975  63.951   0.296    5.01    8       54.8       74.4
   20   3   2   1 32.838  65.676   0.303    4.73   16       34.5       55.8
   21   2   0   6 34.527  69.054   0.317    4.26    8        4.0        0.3
   22   3   1   4 34.736  69.472   0.319    4.21   16        7.9        2.6
   23   1   0   7 35.604  71.209   0.325    4.01    8        4.7        0.4
   24   3   2   3 36.017  72.034   0.329    3.92   16       62.5      151.2
   25   4   0   0 36.508  73.016   0.333    3.81    4      383.6     1387.6
   26   3   0   5 36.914  73.828   0.336    3.74    8       20.6        7.8
   27   4   0   2 38.046  76.092   0.345    3.54    8       15.1        4.0
   28   4   1   1 38.207  76.413   0.346    3.51   16       49.3       84.4
   29   3   3   0 39.126  78.252   0.353    3.37    4        0.0        0.0
   30   0   0   8 40.037  80.073   0.36     3.25    2      383.3      590.1
   31   3   3   2 40.632  81.264   0.364    3.18    8      260.5     1066.0
   32   2   1   7 40.827  81.655   0.365    3.16   16       38.8       46.9
   33   4   1   3 41.223  82.445   0.368    3.11   16       56.0       96.7
   34   4   2   0 41.695  83.389   0.372    3.07    8       56.8       48.9
   35   3   2   5 42.086  84.172   0.375    3.03   16       58.6      102.9
   36   3   1   6 42.36   84.72    0.377    3.01   16      260.0     2008.9
   37   4   0   4 42.556  85.113   0.378    2.99    8       52.4       40.5
   38   4   2   2 43.183  86.365   0.383    2.94   16       10.7        3.3


  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   1   2  15.354  30.707  3.37817    17789.4    100.0    100.0     5.6
    2   1   0   3  16.463  32.926  3.15622      197.1      1.1      1.1     5.6
    3   2   0   0  17.306  34.611  3.0069       199.1      1.1      1.1     5.7
    4   2   1   1  20.009  40.017  2.61413      376.1      2.1      2.1     5.7
    5   2   2   0  24.878  49.756  2.1262      4478.2     25.2     24.7     5.7
    6   2   0   4  25.983  51.967  2.04164     8031.8     45.1     44.2     5.8
    7   3   1   2  29.807  59.613  1.79945     5270.9     29.6     28.7     5.8
    8   1   1   6  31.757  63.514  1.69947     2253.7     12.7     12.2     5.9
    9   4   0   0  36.508  73.016  1.50345     1387.6      7.8      7.4     6.0
   10   0   0   8  40.037  80.073  1.39048      590.1      3.3      3.1     6.0
   11   3   3   2  40.632  81.264  1.37356     1066.0      6.0      5.6     6.1
   12   3   1   6  42.36   84.72   1.32752     2008.9     11.3     10.4     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)