Calomel
      Havighurst R
      Journal of the American Chemical Society 48 (1926) 2113-2130
      Parameters in crystal structure. The mercurous halides
      _cod_database_code 1011076
      _database_code_amcsd 0017974

      CELL PARAMETERS:    4.4700   4.4700  10.8900   90.000   90.000   90.000
      SPACE GROUP: I4/mmm    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    217.592
      Density (g/cm3):      7.204
      MAX. ABS. INTENSITY / VOLUME**2:      320.3666799    
      RIR:     14.479
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                21.49        100.00        4.1352    1   0   1         8
                28.23         88.97        3.1608    1   1   0         4
                31.76         14.99        2.8179    1   0   3         8
                32.90         26.04        2.7225    0   0   4         2
                40.36         32.38        2.2350    2   0   0         4
                43.89         44.62        2.0628    1   1   4         8
                46.17         26.67        1.9662    2   1   1        16
                46.37         24.67        1.9579    1   0   5         8
                52.24          7.57        1.7511    2   1   3        16
                53.01         24.39        1.7275    2   0   4         8
                58.39          9.88        1.5804    2   2   0         4
                62.96          4.95        1.4762    3   0   1         8
                63.13         18.06        1.4727    2   1   5        16
                66.10         13.01        1.4135    3   1   0         8
                68.01          1.63        1.3784    3   0   3         8
                68.67         10.25        1.3668    2   2   4         8
                68.99          1.81        1.3613    0   0   8         2
                75.83         14.86        1.2545    3   1   4        16
                76.14          5.26        1.2502    1   1   8         8
                77.49          5.06        1.2318    3   2   1        16
                77.64          4.60        1.2298    3   0   5         8
                82.16          1.81        1.1732    3   2   3        16
                82.61          5.56        1.1680    1   0   9         8
                83.07          4.07        1.1626    2   0   8         8
                87.24          2.79        1.1175    4   0   0         4
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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.