Affiliation: | 1. Department of Fysico-chemical Geology, K.U. Leuven, Celestijnenlaan 200C, B-3001 Heverlee, Belgium;2. Geological Survey of Belgium, Jennerstreet 13, B-1000 Brussels, Belgium;1. Hungarian Geological Survey, Geological Institute of Hungary, Stefánia u. 14, H-1143 Budapest, Hungary;2. U.S. Geological Survey, M.S. 973 Denver Federal Center, Denver, CO 80225, USA |