Plesovice zircon : a new natural standard for U-Pb and Hf isotopic microanalysis Slama, J. ; Kosler, J. ; Crowley, J.L. ; Gerdes, A. ; Hanchar, J.M. ; Horstwood, M.S.A. ; Morris, G.A. ; Nasdala, L. ; Norberg, N. ; Schaltegger, U. ; Tubrett, M.N. ; Whitehouse, M.J. ; Charles University in Prague ; Norway. University of Bergen ; Massachusetts Institute of Technology ; Johann Wolfgang Goethe University of Frankfurt ; Memorial University of Newfoundland ; British Geological Survey. NERC Isotope Geosciences Laboratory ; Stockholm University ; University of Vienna ; University of Geneva ; Memorial University of Newfoundland ; Swedish Museum of Natural History In: Geochimica et Cosmochimica Acta Vol. 71 pt/no 15S (2007) Goldschmidt conference abstracts p. A947, p. A947