COL  ICSD Collection Code 16593
 DATE Recorded Jan 1, 1980; updated May 14, 1984
 NAME Iron carbide (3/1)
 FORM Fe3 C
      = C Fe3
 TITL Comparison of X-ray and neutron-diffraction refinements of the 
      structure of cementite Fe3 C
 REF  Acta Crystallographica (1,1948-23,1967)
      ACCRA 17 (1964) 1331-1332
 AUT  Herbstein F H, SmutsÿJ
 CELL a=5.090 b=6.748 c=4.523 à=90.0 á=90.0 ç=90.0
      V=155.4 Z=4
 SGR  P n m a       (62) - orthorhombic
 CLAS mmm   (Hermann-Mauguin) - D2h (Schoenflies)
 PRS  oP16
 ANX  NO3
 PARM Atom__No OxStat  Wyck ---X--- ---Y--- ---Z---  -SOF-
      Fe     1  0.000    8d  0.186   0.063   0.328
      Fe     2  0.000    4c  0.036   1/4     0.852
      C      1  0.000    4c  0.89    1/4     0.45
 WYCK d c2
 REM  REF (refinement of earlier measured intensity data)
 REM  XDP (X-ray diffraction from a powder)
 RVAL 0.044
 TEST At least one temperature factor missing in the paper. (Code 53)