Geochemical Characteristics of the Granodiorite Porphyry in Dongxiang W-Cu Deposit, SE China

The Dongxiang tungsten–copper deposit is a large W–Cu located in the northeast of Jiangxi province south China. Previous studies have mainly considered geochemical and isotopic attributes ore deposit, but information still lacking on genesis setting mineralization-related intrusive rocks. This paper presents systematic elements Sr–Nd–Hf data granodiorite porphyry. porphyry intermediate–acidic composition, with SiO2 contents 60.00–75.16 wt.%, Al2O3 10.15–18.53 an K2O 2.95–4.28 wt.%. REEs content ranges from 64.2 to 198.1 ppm, LREE/HREE ratios 7.67–17.47. It characterized by adakitic affinities high Sr/Y (La/Yb)N low Y Yb contents. A slight Eu anomaly, extreme depletion Yb, relatively MgO content, 207Pb/204Pb together indicate that was likely derived partial melting thickened lower continental crust. Based zircon εHf(t) values (−11.8–−4.5), two-stage Hf model ages (1.33–1.94 Ga), regional geological setting, it can be inferred magma Neoproterozoic juvenile crust involvement Paleoproterozoic ancient