3190/jgeosci.053 Original paper U–Th-rich zircon, thorite and allanite-(Ce) as main carriers of radioactivity...Moldanubian Zone, Czech Republic Vladimír Žáček1*, Radek Škoda2, Petr Sulovský3 1 2 3 * Czech Geological Survey...Survey, P. O. BOX 85, Klárov 3, 118 21 Prague 1, Czech Republic; vladimir.zacek@geology.cz Department of Geological...Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic Department of Geology, Faculty of Science,...University, tř. Svobody 26, 779 00 Olomouc, Czech Republic Corresponding author A melasyenite porphyry |