Formation of the Baiyun gold deposit, Liaodong gold province, NE China: Constraints from zircon U–Pb age, fluid inclusion, and C–H–O–Pb–He isotopes

The Baiyun gold deposit is located in the Liaodong peninsula in NE China. The gold orebodies are hosted in the Paleoproterozoic Liaohe Group metamorphic rocks. The alteration/mineralization can be divided into three stages: (I) quartz ± pyrite ± K-feldspar veins, (II) quartz-polymetallic sulfide veins, (III) quartz-carbonate veins. New LA–ICP–MS zircon U–Pb dating suggests all the ore-related porphyries, including monzonite porphyry (224.2 ± 1.3...