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 = 180 K Locality: synthetic _database_code_amcsd 0019107 5.082 6.743 4.512 90 90 90 Pnma atom x y z Uiso Fe1 .1840 .0576 .3325 .014 Fe2 .0343 .25 .8394 .014 C .8963 .25 .4496 .039