Unraveling evolution histories of large hydrothermal systems via garnet U-Pb dating, sulfide trace element and isotopic analyses: A case study of Shuikoushan polymetallic ore field, South China

• DOI: 10.1016/j.oregeorev.2022.105063
• Publication Date: 2022-08-11T02:54:07Z
• Authors: Jinhua Qin; Fan Huang; Shihua Zhong; Denghong Wang; Reimar Seltmann
• Keywords: Trace element; Ore genesis; δ34S; Sulfide Minerals

The Shuikoushan ore field is one of the largest Pb-Zn-Au polymetallic magmatic hydrothermal system in South China and hosts a significant metallogenic potential. In this study, detailed garnet U-Pb dating, sulfide trace element sulfur isotopic analyses were conducted to reveal features during formation. Chronologically, U–Pb dating yields ore-forming ages 158.8 ± 1.4 Ma for Yagongtang deposit, 2.5 Kangjiawan deposit 154 18 Laoyachao respectively. formation history can be subdivided into four stages, five types sphalerite (Sp0 Sp4), three pyrite (Py Py2) from early late are identified. distinct compostions indicate that formed by different trace/minor substitution mechanisms oxidation state, although isotopes consistent origin. Combined with previously published studies, work demonstrates belongs prolonged system. Its mineralization was genetically correlated emplacement granodiorite, thermochemical sulfate reduction (TSR) process (Stage 2) bacterial (BSR) 3) dominated evolution facilitated participation sulfides within field.