Uranium Minerals in the Radlovac Series Metasediments at Mt. Papuk, Croatia

From the early 1960’s to the late 80’s, extensive exploration for uranium ore took place in the former Yugoslavia, including Croatia (BRAUN, 1984). Prospecting activities by the Croatian Geological Survey identified several locations in the Slavonian Mts. (Croatia) with an increased level of radioactivity (BRAUN et al., 1983), particularly in the area of Mts. Psunj and Papuk. The Carbon age of the metasediments of Radlovac creek – known as the Radlovac series – has been determined from the fossil flora (BRKIĆ et al., 1974). The position of this series, which includes rocks with higher background radioactivity, is shown in Fig. 1. The tectonic setting and structural fabric of these and associated rocks have been described by JAMIČIĆ (1976, 1979). The Radlovac series is a metaschist formation, and an increased level of radioactivity has been identified in Uranium Minerals in the Radlovac Series Metasediments at Mt. Papuk, Croatia