Ore–forming potential of the Wubaduolai monzogranite porphyry, western Gangdese copper belt, Tibet: Insights from geochronology and petrogeochemistry

[Display omitted] •The monzogranite porphyry at Wubaduolai was derived from juvenile Tibetan lower crust, with contributions from Indian plateand metasomatized mantle.•The magma that formed monzogranite porphyry at Wubaduolai is oxidized and hydrous.•The monzogranite porphyry at Wubaduolai has lower potential for copper mineralization than rocks from Zhunuo and Beimulang deposits. The Wubaduolai deposit is a newly discovered porphyry copper deposit in the Zhunuo-Beimulang ore-concentrated area of the Gangdese belt. The monzogranite porphyry is the causative intrusion in the deposit with a zircon U-Pb age of ∼16 Ma. Monzogranites have high Sr (332–673 ppm) and Sr/Y ratios (35–69), typical of adakite affinity. They have initial 87Sr/86Sr ratios of 0.7083–0.7093 and εNd(t) values between −9.2 and −7.1. The zircon εHf(t) values range from −6.45 to −2.09 and zircon δ18O values have a narrow range of 7.4 to 8.1 ‰ for the porphyry. These geochemical characteristics indicate that the parental magma was derived from juvenile Tibetan lower crust, with contributions from Indian plate-released fluids and metasomatized mantle-derived mafic magmas. The porphyry shows high values of log w(Fe2O3/FeO) (>0) and V/Sc (mostly > 12) in whole rock and high values of △FMQ (4.13–5.79), 10000 × (δEu)/Y(>4), and low Dy/Yb (