Objective Galuskin et al. (2011) firstly discovered that vorlanite (CaU^6+/4+)04 is a rare Ca-rich mineral with a fluorite-type structure, which is isostructural with uraninite (U^4+O2). Previous studies of ...Objective Galuskin et al. (2011) firstly discovered that vorlanite (CaU^6+/4+)04 is a rare Ca-rich mineral with a fluorite-type structure, which is isostructural with uraninite (U^4+O2). Previous studies of the Xianshi granite-related uranium deposit reported that uraninite and pyrite are the major ore minerals whereas galena, clausthalite (PbSe), and pyrite are minor phases in the ores. A more detailed petrographic and geochronological study of the uranium minerals from the Xianshi deposit showed that there are three distinct types of uraninite-bearing assemblages which formed at three mineralization episodes (Fig. la; Luo et al., 2015).展开更多
基金supported by the National Key R&D Program of China (grant No. 2016YFC0600405)the Strategic Priority Research Program (B) of CAS (grant No. XDB18030202)+2 种基金the Natural Science Foundation of China (41603051)the Key Program of Science and Technology of Guizhou (grant No. [2018]1423)CSC program to Luo
文摘Objective Galuskin et al. (2011) firstly discovered that vorlanite (CaU^6+/4+)04 is a rare Ca-rich mineral with a fluorite-type structure, which is isostructural with uraninite (U^4+O2). Previous studies of the Xianshi granite-related uranium deposit reported that uraninite and pyrite are the major ore minerals whereas galena, clausthalite (PbSe), and pyrite are minor phases in the ores. A more detailed petrographic and geochronological study of the uranium minerals from the Xianshi deposit showed that there are three distinct types of uraninite-bearing assemblages which formed at three mineralization episodes (Fig. la; Luo et al., 2015).