Clues to the Formation History of Refractory Metal Nuggets

1 , T. Berg 1 , G.Schonhense 1 , H. Palme 2 and U. Ott 3,4 , 1 Institut fur Physik, Johannes Gutenberg-Universitat, Staudingerweg 7, D-55128 Mainz, Germany (schwandd@uni-mainz.de). 2 Forschungsinstitut und Naturmuseum Senckenberg, Senckenberganlage 25, D-60325 Frankfurt am Main, Germany. 3 Max-Planck-Institut fur Chemie, D-55128 Mainz, Germany 4 University of West Hungary, H-9700 Szombathely, Hungary.