Geochronology, pyrite trace elements, and sulfur isotope geochemical characteristics of the Saibagou gold deposit in the eastern part of the northern Qaidam Basin

Introduction: The Saibagou gold deposit, located in the eastern part of tectonic belt northern Qaidam Basin western China, has its ore bodies strictly controlled by regional fault system. Despite this understanding, there remain controversies surrounding deposit’s metallogenic epochs, sources ore-forming materials, and properties fluids. To address these controversy, process deposit can be further determined analyzing U-Pb ages hydrothermal zircons gold-bearing quartz veins investigating trace element sulfur isotope compositions pyrite deposit. Methods: This study does not focus on mineral characteristics susceptible to interference condition bodies. Instead, it offers a detailed discussion stable associated minerals their indicative markers formed mineralization. Results: results showed that categorized into following stages: 1) quartz–pyrite veins, 2) milky-white quartz—pyrite—native 3) hoary quartz—native gold—polymetallic sulfide veins. As indicated two ages, namely, 423.91 ± 4.5 Ma (the Silurian) 470.18 4.92 Ordovician). Discussion: Silurian age, predominates nearly aligns with expansion NWW-trending brittle-ductile shear zone, followed Ordovician age. Data elements isotopes pyrite, show similar three stages. Gold primarily occurs as native or minor petzite inclusions very low lattice concentration. concentrations such Co, Ni, well variation range δ 34 S values, fluids were derived from low-temperature arsenic-bearing acidic magmas. In addition, primary materials appear encompass mantle-derived deep earth.