Iowaite
      Allmann R, Donnay J D H
      American Mineralogist 54 (1969) 296-299
      About the structure of iowaite
      _database_code_amcsd 0000189

      CELL PARAMETERS:    3.1190   3.1190  24.5200   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    206.577
      Density (g/cm3):      1.912
      MAX. ABS. INTENSITY / VOLUME**2:      26.41982251    
      RIR:      4.499
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                10.82        100.00        8.1733    0   0   3         2
                21.75         30.30        4.0867    0   0   6         2
                33.99         27.77        2.6379    0   1   2         6
                36.35          2.49        2.4718    1   0   4         6
                38.03         12.39        2.3660    0   1   5         6
                44.72         30.05        2.0265    0   1   8         6
                50.25          8.12        1.8155    1   0  10         6
                53.28          3.50        1.7193    0   1  11         6
                59.25         10.20        1.5595    1   1   0         6
                59.80          2.65        1.5464    1   0  13         6
                60.43          4.61        1.5319    1   1   3        12
                63.28          2.91        1.4695    0   1  14         6
                63.89          5.94        1.4570    1   1   6        12
                70.10          2.21        1.3424    2   0   2         6
                70.67          5.00        1.3329    1   0  16         6
                72.61          1.18        1.3021    2   0   5         6
                77.18          3.56        1.2359    2   0   8         6
                81.34          1.37        1.1830    0   2  10         6
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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.