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Geoscience ›› 2023, Vol. 37 ›› Issue (06): 1449-1466.DOI: 10.19657/j.geoscience.1000-8527.2023.068

• Ore Deposits and Regional Metallogeny • Previous Articles     Next Articles

Characteristics of Multiphase Mineralization of Jinzhuping Tungsten Deposit in Southern Jiangxi Province and Its Geological Significance

YANG Junfeng(), ZHANG Juan(), LIU Xinxing, QIU Jiawei, WANG Meng, CHENG Jiawei, LU Kexuan, WANG Yingxue   

  1. Hebei Key Laboratory of Strategic Critical Mineral Resources, Hebei GEO University, Shijiazhuang, Hebei 050031, China
  • Received:2022-08-27 Revised:2023-06-02 Online:2023-12-10 Published:2024-01-24

Abstract:

The Jinzhuping quartz vein-type tungsten deposit is located in the tungsten-polymetallic metallogenic belt in the eastern Nanling region, southern Jiangxi Province.The Yanshanian concealed granite is associated with the Tungsten mineralization, and the lithology is medium-coarse-grained (or porphyritic) biotite monzogranite.The early orebody was strongly affected by late hydrothermal metasomatism, showing multi-generational characteristics.At present, there is still a lack of precise chronology on the time of buried pluton and multi-stage mineralization.In this paper, zircon and wolframite LA-ICP-MS U-Pb dating methods are used to date the porphyrotic biotite monzolitic granite and three generations of wolframites in the deposit.Our data reveal the multistage metallogenic evolution, and we further discuss the mineralization process.The results show that porphyritic biotite monzogranite was formed at (155.2±0.7) Ma, whilst the three generationgs of wolframites were formed at (164.9±2.4) Ma, (157.4±1.0) Ma and (144.8±1.8) Ma.We considered that the concealed rock of Jinzhuping tungsten deposit was emplaced in 159-155 Ma, and the three stages of hydrothermal tungsten mineralization were formed in 164.9-144.8 Ma, which were the products of large-scale magmatism and mineralization in the Yanshanian Nanling tungsten-tin polymetallic metallogenic belt.The first two generations of tungsten mineralization age and granite emplacement age are within error, and is between the previously reported Middle to Late Jurassic for the Nanling metallogenic peak.Meanwhile, the tungsten mineralization age of the third generation is about 10 Ma later than the granite formation, which may represent the newfound Early Cretaceous tungsten mineralization after the Middle and Late Jurassic mineralization.

Key words: wolframite, U-Pb dating, hydrothermal tungsten mineralization, Jinzhuping tungsten deposit

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