Iodargyrite
      Hull S, Keen D A
      Physical Review B59 (1999) 750-761
      Pressure-induced phase transitions in AgCl, AgBr, and AgI
      Sample: P =  0.0 GPa, Phase II
      _database_code_amcsd 0015225

      CELL PARAMETERS:    4.5990   4.5990   7.5240   90.000   90.000  120.000
      SPACE GROUP: P6_3mc    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    137.818
      Density (g/cm3):      5.657
      MAX. ABS. INTENSITY / VOLUME**2:      411.0381478    
      RIR:     23.660
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                22.32        100.00        3.9829    1   0   0         6
                23.65          7.43        3.7620    0   0   2         1
                32.75         15.49        2.7349    1   0   2         6
                39.18         14.43        2.2995    1   1   0         6
                45.55          7.42        1.9914    2   0   0         6
                46.27          3.82        1.9620    1   1   2         6
                51.95          2.20        1.7600    2   0   2         6
                53.91          1.66        1.7009    1   0   4         6
                61.61          3.02        1.5054    2   1   0        12
                66.95          1.13        1.3976    2   1   2        12
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.