Chengdeite
      Zuxiang Y
      Acta Geologica Sinica 69 (1995) 215-220
      Chengdeite - ordered natural iron-iridium alloy
      Locality: Placer deposits off the Luanhe River, China
      _database_code_amcsd 0011977

      CELL PARAMETERS:    3.7920   3.7920   3.7920   90.000   90.000   90.000
      SPACE GROUP: Pm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     54.526
      Density (g/cm3):     19.252
      MAX. ABS. INTENSITY / VOLUME**2:      1355.409443    
      RIR:     22.924
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                23.46         14.42        3.7920    1   0   0         6
                33.42         11.51        2.6813    1   1   0        12
                41.24        100.00        2.1893    1   1   1         8
                47.98         46.45        1.8960    2   0   0         6
                54.08          5.29        1.6958    2   1   0        24
                59.73          3.77        1.5481    2   1   1        24
                70.20         24.90        1.3407    2   2   0        12
                75.17          1.70        1.2640    2   2   1        24
                80.02          1.38        1.1991    3   1   0        24
                84.80         26.67        1.1433    3   1   1        24
                89.54          7.63        1.0947    2   2   2         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.