Magmatic‐Hydrothermal Mineralization Sequence in Xinlu Ore Field, Guangxi, South China: Constraints from Zircon U‐Pb, Molybdenite Re‐Os, and Muscovite Ar‐Ar Dating

• DOI: 10.1111/rge.12212
• Publication Date: 2019-08-22T05:10:30Z
• Authors: Yangyang Feng; Zuohai Feng; Wei Fu; Zhiqiang Kang; Jian Jiang; Along Guo; Xi Wang; Meng Feng; Chunzeng Wang
• Keywords: Molybdenite; Muscovite; Radiometric dating

Abstract The Xinlu Sn‐polymetallic ore field is located in the western Nanling Polymetallic Belt northeastern Guangxi, South China, where a number of typical skarn‐, hydrothermal vein‐type tin deposits have developed. There are two types Sn deposits: skarn‐type and sulfide‐quartz vein‐type. mineralizations mainly occur on south side Guposhan granitic complex pluton within its outer contact zone. To constrain mineralization age further understand genetic links to complex, series geochronological works has been conducted at Liuheao deposit using high‐precision zircon SHRIMP U‐Pb, molybdenite Re‐Os, muscovite Ar‐Ar dating methods. results show that biotite‐monzogranite, which part intrusive unit pluton, U‐Pb 161.0 ± 1.5 Ma. 40 Ar‐ 39 Ar plateau 160 2 Ma (same as isochron age), yields an Re‐Os 154.4 3.5 magmatic‐hydrothermal sequence demonstrated took place immediately following emplacement monzogranite, with skarn metasomatic stage predating sulfide stage. Geochronologically, we compared this 26 distributed along Belt, leading suggestion magmatic‐metallogenic processes (ca. 161–154 Ma) component Early Yanshanian large‐scale event (peaked 160–150 Range China. Petrogenesis Sn‐producing granite were probably caused by crust–mantle interaction result significant lithospheric extension thinning China Late Jurassic.