Tetradymite
      Harker D
      Zeitschrift fur Kristallographie 89 (1934) 175-181
      The crystal structure of the mineral tetradymite, Bi2 Te2 S
      _cod_database_code 1011150
      _database_code_amcsd 0018035

      CELL PARAMETERS:   10.3100  10.3100  10.3100   24.170   24.170   24.170
      SPACE GROUP: R-3       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    161.469
      Density (g/cm3):      7.251
      MAX. ABS. INTENSITY / VOLUME**2:      378.2608974    
      RIR:     16.985
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 8.84          3.21       10.0042    1   1   1         2
                17.73         13.82        5.0021    2   2   2         2
                23.99         17.11        3.7100    1   0   0         6
                24.54          3.23        3.6278    1   1   0         6
                26.64          9.78        3.3463    2   1   1         6
                26.73          2.18        3.3347    3   3   3         2
                28.12        100.00        3.1735    2   2   1         6
                31.76          8.59        2.8178    3   2   2         6
                33.85          6.63        2.6482    3   3   2         6
                41.85         34.98        2.1585    0  -1   1         6
                45.78          3.41        1.9819    3   1   2         6
                45.78          3.41        1.9819    3   2   1         6
                48.81          2.38        1.8657    1  -1   1         6
                50.30          1.62        1.8139    2   2   0         6
                51.18         16.77        1.7848    3   1   1         6
                53.47          1.78        1.7136    3   3   1         6
                68.18          6.25        1.3755    3   2   0         6
                68.18          6.25        1.3755    3   0   2         6
                76.43          4.63        1.2462    1  -2   1         6
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       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.