The iron isotope composition of enstatite meteorites: Impliions for their origin and the metal/sulfide Fe isotopic fractionation factor Kun Wanga,b,⇑, Paul S. Savagea,c,d, Fre´de´ric Moyniera,d aDepartment of Earth and Planetary Sciences and McDonnell Center for the Space Sciences, Washington University in St Louis, One Brookings Drive, St. Louis, MO 63130, USA