Rb–Sr dating of sphalerite and S–Pb isotopic studies of the Xinxing crypto-explosive breccia Pb–Zn–(Ag) deposit in the southeastern segment of the Lesser Xing’an–Zhangguangcai metallogenic belt, NE China

The Xinxing Pb–Zn–(Ag) deposit is located in the southeastern segment of the Lesser Xing’an–Zhangguangcai metallogenic belt, NE China. It is a small-scale deposit (Pb + Zn < 50,000 tonnes) that occurs in a crypto-explosive breccia pipe. Ore bodies are hosted in Permian granodiorite, structurally controlled by three sets of faults. This paper reports results of Rb–Sr isotopic dating of sphalerite, which yields an isochron age of 182.8 ± 3.1 Ma...