Ga Nb4 Se8
      Ben Yaich H, Jegaden J, Potel M, Sergent M, Rastogi A, Tournier R
      Journal of the Less-Common Metals 102 (1984) 9-22
      Nouveaux chalcogenures et chalcohalogenures a clusters tetraedriques
      Nb4 ou Ta4
      _cod_database_code 1008802
      _database_code_amcsd 0016674

      CELL PARAMETERS:   10.4200  10.4200  10.4200   90.000   90.000   90.000
      SPACE GROUP: F-43m     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1131.366
      Density (g/cm3):      6.299
      MAX. ABS. INTENSITY / VOLUME**2:      126.2637194    
      RIR:      6.527
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.72         31.04        6.0160    1   1   1         4
                17.02          7.48        5.2100    2   0   0         6
                24.16          8.60        3.6840    2   2   0        12
                28.41         38.90        3.1417    3   1   1        12
                29.70         23.77        3.0080    2   2   2         4
                34.43        100.00        2.6050    4   0   0         6
                37.63         17.18        2.3905    3   3   1        12
                38.64          1.60        2.3300    4   2   0        24
                42.50         33.32        2.1270    4   2   2        12
                45.22         21.91        2.0053    5   1   1        12
                45.22          8.28        2.0053    3   3   3         4
                49.48         79.47        1.8420    4   4   0        12
                52.71          1.22        1.7367    4   4   2        12
                58.04          1.60        1.5890    5   3   3        12
                58.78         13.33        1.5709    6   2   2        12
                61.67         15.79        1.5040    4   4   4         4
                63.79          3.31        1.4591    5   5   1        12
                63.79          2.52        1.4591    7   1   1        12
                67.24         13.17        1.3924    6   4   2        24
                69.26          5.57        1.3566    7   3   1        24
                69.26          2.27        1.3566    5   5   3        12
                72.58          8.16        1.3025    8   0   0         6
                74.54          4.87        1.2730    7   3   3        12
                77.77         15.34        1.2280    8   2   2        12
                77.77          2.59        1.2280    6   6   0        12
                79.69          2.23        1.2032    5   5   5         4
                80.33          6.33        1.1953    6   6   2        12
                82.87         12.92        1.1650    8   4   0        24
                85.39          1.10        1.1369    8   4   2        24
                87.90          2.43        1.1108    6   6   4        12
                89.78          1.71        1.0923    9   3   1        24
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.