Formation of an Iron – Copper – Gold (Uranium) Metallogenic System in the Luzong Volcanic Basin, Central Anhui
Iron oxide copper gold (IOCG) deposits, which was first formally defined by Hitzman et al. (1992), comprise a broad and ill-defined clan of mineralization styles. IOCG deposits contain abundant (>10%) iron oxides (magnetite and/or hematite) and economic grade of copper and/or gold (Sillitoe, 2003; Williams et al., 2005). Besides the copper and by-product gold, IOCG deposits may also contain appreciable amounts of cobalt, zinc, molybdenum, silver, rare earth elements, uranium and other elements. In fact, the iron copper gold uranium deposits in the Luzong volcanic basin, central Anhui have some close relationships. For example, the porphyrites have close relationships to the formation of copper (gold), which are mainly in the Shaxi diorite porphyrite; the iron deposits are closely related to the syenites, such as the Nine iron deposit and Dabaozhuang iron deposit; and the uranium mineralization is closely related to the A-type granite in the contact zone of Mesozoic sedimentary layers, such as the Huangmeijian uranium deposit. In this paper, we present a case study of the IOCG mineralization system in the Luzong volcanic basin, central Anhui Province.