Fault-controlled fluid evolution in the Xitian W–Sn–Pb–Zn–fluorite mineralization system (South China): Insights from fluorite texture, geochemistry and geochronology

•Fluorite Sm–Nd isochron yielded an age of 153.3 ± 8.0 Ma in Xitian.•Fluorite mineralization was related to meteoric water-mixed magmatic fluid.•Decrease in temperature and increase in pH resulted in REE changing in ore-forming fluid.•The mineralization zoning in Xitian were controlled by fluid evolution and fault development.