Cohenite Wood I G, Vocadlo L, Knight K S, Dobson D P, Marshall W G, Price G D, Brodholt J Journal of Applied Crystallography 37 (2004) 82-90 Thermal expansion and crystal structure of cementite, Fe3C, between 4 and 600 K determined by time-of-flight neutron powder diffraction Note: T = 200 K Locality: synthetic _database_code_amcsd 0019108 5.082 6.746 4.512 90 90 90 Pnma atom x y z Uiso Fe1 .1844 .0574 .3319 .015 Fe2 .0344 .25 .8390 .015 C .8957 .25 .4488 .038