2024 Vol. 43, No. 4
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XIA Jie, LU Youyue, FU Jianming, ZHANG Zunzun, CHENG Shunbo, LI Jianfeng, NING Yongyun, FENG Jingping, ZHANG Jitao. 2024. Diagenetic and mineralization chronology study of the Wujiaping tin ore deposit in Nanling Range. Geological Bulletin of China, 43(4): 572-581. doi: 10.12097/gbc.2022.04.041
Citation: XIA Jie, LU Youyue, FU Jianming, ZHANG Zunzun, CHENG Shunbo, LI Jianfeng, NING Yongyun, FENG Jingping, ZHANG Jitao. 2024. Diagenetic and mineralization chronology study of the Wujiaping tin ore deposit in Nanling Range. Geological Bulletin of China, 43(4): 572-581. doi: 10.12097/gbc.2022.04.041

Diagenetic and mineralization chronology study of the Wujiaping tin ore deposit in Nanling Range

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  • Wujiaping tin ore deposit is a greisen-type deposit with medium-sized prospect scale newly discovered in Dayishan area in recent years. The orebody occurs as a vein in the Dayishan compound granite body and is controlled by NE-trending faults. In order to determine its diagenetic and metallogenic age, summarize the metallogenic regularity in Dayishan area, and guide regional prospecting and exploration, the LA-ICP-MS zircon U−Pb dating of medium-coarse grained porphyritic biotite monzonitic granite (PM21-19) and medium-fine grained porphyry biotite monzonitic granite (PM21-27) in ore-bearing surrounding rocks was studied. The diagenetic ages of 157.1 ± 1.1 Ma (MSWD=0.55) and 153.7 ± 1.2 Ma (MSWD=0.55) are obtained, which belong to the early Yanshanian period. At the same time, the Rb−Sr isochron age of quartz in the greisen-type tin ore is 148.1 ± 2.1 Ma (MSWD = 0.52). Combined with the regional data, the diagenetic and metallogenic age of Wujiaping tin ore deposit is the early Yanshanian period, which belongs to the peak of Mesozoic diagenesis and mineralization(160~150 Ma) in Nanling region.

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