Velikite
      Kaplunnik L N, Pobedimskaya E A, Belov N V
      Soviet Physics Crystallography 22 (1977) 99-100
      Crystal structure of velikite Cu3.75Hg1.75Sn2S8
      Locality: Khaidarkan, Kyrgyzstan
      _database_code_amcsd 0015574

      CELL PARAMETERS:    5.5420   5.5420  10.9080   90.000   90.000   90.000
      SPACE GROUP: I-42m     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    335.026
      Density (g/cm3):      5.377
      MAX. ABS. INTENSITY / VOLUME**2:      215.1434091    
      RIR:     13.029
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                16.25          7.04        5.4540    0   0   2         2
                17.95          3.85        4.9409    1   0   1         8
                22.69         11.63        3.9188    1   1   0         4
                28.04        100.00        3.1825    1   1   2         4
                29.38          1.86        3.0401    1   0   3         8
                32.31         14.70        2.7710    2   0   0         4
                32.84          7.97        2.7270    0   0   4         2
                36.37         10.32        2.4704    2   0   2         8
                37.20          2.07        2.4169    2   1   1         8
                40.29          6.16        2.2384    1   1   4         4
                44.23          1.07        2.0479    2   1   3         8
                46.34         17.44        1.9594    2   2   0         4
                46.74         31.78        1.9436    2   0   4         8
                49.43          2.03        1.8440    2   2   2         4
                50.18          1.62        1.8180    0   0   6         2
                52.19          2.58        1.7525    3   1   0         8
                55.04         25.33        1.6685    3   1   2         8
                55.74         11.71        1.6492    1   1   6         4
                57.96          5.68        1.5912    2   2   4         4
                63.05          3.31        1.4743    3   1   4         8
                67.62          4.65        1.3855    4   0   0         4
                68.86          1.71        1.3635    0   0   8         2
                70.68          2.22        1.3327    2   2   6         4
                73.55          1.23        1.2878    1   1   8         4
                74.73          4.30        1.2703    3   3   2         4
                75.32          8.11        1.2617    3   1   6         8
                76.94          1.91        1.2392    4   2   0         8
                77.23          2.10        1.2352    4   0   4         8
                78.12          2.63        1.2234    2   0   8         8
                79.28          2.12        1.2084    4   2   2         8
                86.21          7.88        1.1282    4   2   4         8
                87.07          3.19        1.1192    2   2   8         4
                88.79          1.22        1.1020    4   0   6         8
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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.