IrO2
      Bolzan A A, Fong C, Kennedy B J, Howard C J
      Acta Crystallographica B53 (1997) 373-380
      Structural studies of rutile-type metal dioxides
      Locality: synthetic
      _database_code_amcsd 0019243

      CELL PARAMETERS:    4.5051   4.5051   3.1586   90.000   90.000   90.000
      SPACE GROUP: P4_2/mnm  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     64.107
      Density (g/cm3):     11.614
      MAX. ABS. INTENSITY / VOLUME**2:      578.4130825    
      RIR:     16.217
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.01        100.00        3.1856    1   1   0         4
                34.68         95.34        2.5863    1   0   1         8
                40.03         27.75        2.2525    2   0   0         4
                40.21          1.53        2.2429    1   1   1         8
                53.98         63.37        1.6986    2   1   1        16
                57.89         13.67        1.5928    2   2   0         4
                58.44          7.41        1.5793    0   0   2         2
                65.52         14.48        1.4246    3   1   0         8
                66.03         15.88        1.4150    1   1   2         8
                69.28         16.34        1.3562    3   0   1         8
                73.19          9.13        1.2931    2   0   2         8
                83.14         13.10        1.1619    3   2   1        16
                86.39          3.59        1.1263    4   0   0         4
                86.85          7.82        1.1215    2   2   2         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.