Origin of Ag-Pb-Zn mineralization at Huanaote, Inner Mongolia, NE China: Evidence from fluid inclusion, H-O-S-Pb and noble gas isotope studies

Zhao, Qingqing; Zhai, Degao; Dou, Mingxin; Zhao, Yuande; Lian, Yong; Wang, Yongli; Wang, Jiajun; Jiang, Xiaojie; Liu, Jiajun; Zhang, Hongyu

doi:10.1016/j.oregeorev.2023.105656

Cited by 5 publications

(1 citation statement)

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“…Lu et al [2] suggested that bismuth is one of the important associated elements in the deposit, and bismuth was formed in medium to low temperature and low fluid salinity conditions. Overall, there is still insufficient research on the occurrence and physicochemical conditions for bismuth in the Niuxingba-Liumukeng deposit, and another issue is that several studies indicate that bismuth and silver could coexist in some ore deposits [6,7]. However, no relevant research has been conducted to reveal how bismuth plays a crucial role in silver transport and deposition in hydrothermal systems.…”

Section: Regional Geologymentioning

confidence: 99%

The Occurrence and Chemical Composition of Bismuth-Bearing Minerals in the Niuxingba-Liumukeng Ag-Pb-Zn Deposit, Jiangxi Province, South China

Yue,

Zhai,

Zhao

et al. 2023

Minerals

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The Niuxingba-Liumukeng deposit, located in the Yinkeng ore field (Jiangxi province, South China), is a typical Ag-Pb-Zn deposit hosted in the Yudu-Ganxian metallogenic belt. Based on the field investigation and mineralogical studies, the mineralization of this deposit can be divided into three stages: quartz-pyrite-arsenopyrite stage (I), quartz-galena-sphalerite-sulfosalt stage (II), and quartz-carbonate stage (III), with stage II being the main Ag mineralization stage. In this contribution, we reported the occurrence of bismuth-bearing minerals in this hydrothermal deposit and its implications for ore formation. Based on the results of electron microprobe analyses, we infer that the dominant occurrence of bismuth at Niuxingba-Liumukeng is primarily marked by solid solutions within the crystal lattice of galena and as visible independent bismuth-bearing minerals. The independent bismuth minerals consist of berryite [Pb3(Ag,Cu)5Bi7S16], emplectite (CuBiS2), and aikinite (PbCuBiS3). Most bismuth minerals replace chalcopyrite or fill in the cracks of pyrite and chalcopyrite. Meanwhile, we found a large number of Bi-bearing minerals closely coexisting with Ag-bearing minerals, indicating that bismuth may have played a crucial role in silver deposition from hydrothermal fluids. We considered that the existence of bismuth-rich melts associated with the ore-forming hydrothermal systems could help to promote the enrichment and precipitation of silver to form economic ores.

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Section: Regional Geologymentioning

confidence: 99%