Calomel
      Hylleraas E
      Zeitschrift fur Physik 36 (1926) 859-896
      Die Anordnung der Atome in den tetragonalen Kristallen der einwertigen
      Quecksilberhalogenide Hg2 Cl2, Hg2 Br2, Hg2 J2. Berechnung der
      optischen Doppelbrechung von Hg2 Cl2.
      _cod_database_code 1010948
      _database_code_amcsd 0017669

      CELL PARAMETERS:    4.4640   4.4640  10.9000   90.000   90.000   90.000
      SPACE GROUP: I4/mmm    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    217.208
      Density (g/cm3):      7.217
      MAX. ABS. INTENSITY / VOLUME**2:      316.4968960    
      RIR:     14.279
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                21.51        100.00        4.1310    1   0   1         8
                28.27         90.05        3.1565    1   1   0         4
                31.75         16.41        2.8179    1   0   3         8
                32.87         26.77        2.7250    0   0   4         2
                40.41         32.76        2.2320    2   0   0         4
                43.89         45.76        2.0627    1   1   4         8
                46.23         26.63        1.9637    2   1   1        16
                46.35         24.23        1.9589    1   0   5         8
                52.29          8.24        1.7496    2   1   3        16
                53.03         24.98        1.7267    2   0   4         8
                58.48          9.99        1.5783    2   2   0         4
                63.05          4.94        1.4743    3   0   1         8
                63.15         17.69        1.4723    2   1   5        16
                66.20         13.14        1.4116    3   1   0         8
                68.09          1.77        1.3770    3   0   3         8
                68.73         10.48        1.3657    2   2   4         8
                68.92          1.93        1.3625    0   0   8         2
                75.91         15.20        1.2534    3   1   4        16
                76.09          5.60        1.2509    1   1   8         8
                77.61          5.05        1.2302    3   2   1        16
                77.70          4.50        1.2290    3   0   5         8
                82.27          1.97        1.1719    3   2   3        16
                82.53          5.48        1.1689    1   0   9         8
                83.04          4.33        1.1629    2   0   8         8
                87.38          2.82        1.1160    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.