Granite–pegmatite connection and mineralization age of the giant Renli Ta Nb deposit in South China: Constraints from U–Th–Pb geochronology of coltan, monazite, and zircon

The recently discovered Renli TaNb deposit in northeastern Hunan Province is the largest known pegmatite TaNb deposit in South China. Previous research has shown that biotite monzogranite is locally spatially associated with the pegmatites and could be the parental granite of the NbTa mineralization. In this study, we determine that muscovite monzogranite also has a close spatial relationship with the NbTa pegmatites. We present new U–Th–Pb ages...