Genesis of the Zhaoxian Gold Deposit, Jiaodong Peninsula, China: Insights From in-situ Pyrite Geochemistry and S-He-Ar Isotopes, and Zircon U-Pb Geochronology

Xu, Yiwen; Mao, Guangzhou; Liu, Xiaotong; An, Pengrui; Wang, Yu; Cao, Mingping

doi:10.3389/feart.2022.886975

Cited by 8 publications

(4 citation statements)

References 30 publications

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“…Carbonatization (Figure 9D) occurs at low temperatures and can be found near the late stage. Comparing with the wall-rock alteration works in previous researches (Li et al, 2022;Xu et al, 2022), we found that the alteration type in the Zhaoxian gold deposit is similar at different depths.…”

Section: Wall-rock Alterationsupporting

confidence: 69%

“…This presents an exceptional opportunity to gather comprehensive information on deep mineralization and gain insights into the deepforming mechanism of the Jiaojia gold belt. Previous studies in the Zhaoxian gold deposit have involved micro region analysis, in-situ pyrite analysis (Li et al, 2021;Xu et al, 2022), a threedimensional metallogenic prospecting model (Li et al, 2022), as well as investigations on fluid inclusion at depths ranging from 2,146 to 2,038 m below sea level (Li et al, 2023). However, further investigations are necessary to examine the properties of oreforming fluids and elucidate the sources of sulfur.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of deep ore-forming fluid in the Zhaoxian gold deposit within the Jiaodong gold province: insights from quartz vein fluid inclusion, in-situ trace element analysis, and S isotopic composition in pyrite

Zhang,

Zeng,

Fan

et al. 2024

Front. Earth Sci.

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The Jiaodong gold province, situated in the southeastern margin of the North China Craton, is globally renowned for its substantial gold reserves exceeding 5,000 tonnes. The Zhaoxian gold deposit is part of the significant Jiaojia gold belt within the Jiaodong gold province. Fieldwork has identified four distinct stages of ore formation in this study: an early barren quartz vein stage (Stage 1) containing fine-grained pyrite; a gold-bearing stage (Stage 2) consisting of quartz, pyrite, and native gold; a polymetallic sulfide-rich stage (Stage 3) comprising quartz, polymetallic sulfides, and native gold; and a late-stage (Stage 4) primarily composed of quartz and calcite with minimal pyrite content. We conducted fluid inclusion analysis using microthermometry and Raman spectroscopy techniques to examine the fluid characteristics. In-situ analysis of trace elements in pyrite was performed to investigate the fluid composition and evolution. Additionally, we determined the sulfur isotope composition in pyrite to analyze the source of sulfur. Our findings indicate that the ore-forming fluid in the Zhaoxian gold deposit belongs to a medium-to-low-salinity H₂O-NaCl-CO₂-CH₄ system. Fluctuations in Au and As concentrations observed along with oscillating zones and sulfide inclusions during Stage 2 suggest potential fluid boiling processes occurring during mineralization. High concentrations of Ag, Cu, Zn, Cd, In, Pb, and Bi without oscillating zones during Stage 3 imply precipitation of polymetallic sulfides under stable fluid conditions. The δ34S values observed in the Zhaoxian gold deposit are slightly higher than those found in granitoids from other areas within Jiaodong but similar to those seen in other deposits within the Jiaojia gold belt region. In conclusion, magmatic-hydrothermal ore-forming fluids were involved along with significant fluid-rock interaction during metallogenic processes of the Zhaoxian gold deposit.

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Section: Wall-rock Alterationsupporting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Characterization of deep ore-forming fluid in the Zhaoxian gold deposit within the Jiaodong gold province: insights from quartz vein fluid inclusion, in-situ trace element analysis, and S isotopic composition in pyrite

Zhang,

Zeng,

Fan

et al. 2024

Front. Earth Sci.

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“…The average Au content of the Neoarchean Jiaodong Group metagabbro in the Jiaojia fault hanging-wall at Zhaoxian is low (1.16 ppb) (Yang et al, 1991), and could unlikely represent a main gold source. The Au content of Linglong granite (19 ppb) and Guojialing granite (49 ppb) in the Jiaodong district area are higher (Lu et al, 1999;Xu et al, 2022), and both being interpreted to have a crust-mantle mixed magma source. An upper mantle source of Au has also been suggested for the Jiaodong gold deposits (Gui, 2014).…”

Section: Source Of Ore-forming Materialsmentioning

confidence: 99%

Nature and geochemical characteristics of ore-forming fluids in the Zhaoxian gold deposit, Jiaodong gold province, eastern China

Mao

Liu

et al. 2023

Front. Earth Sci.

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“…Additionally, zircon U-Pb dating was done on ore-related granite to set a limit on the mineralization age. In addition, the clear and organized sample collection from the drill cores and technical analysis was specifically conducted in situ to prevent the mixing of pyrite from different stages and acquire a better resolution and speed of the measured results [9,10]. The primary result roughly demonstrated the four stages of mineralization by observing the ore crosscutting relation and hydrothermal mineral combination.…”

Section: Application Of Geochemistry Studies In Revealing the Mineral...mentioning

confidence: 99%

Applications of trace element and isotope geochemistry in revealing origin and evolution of thermal spring water and ore deposit

Zhu

2023

J. Phys.: Conf. Ser.

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Geochemistry is normally referred to as the study of Earth’s chemistry by exploring properties of materials and natural processes from deep beneath the Earth’s surface to the upper atmosphere, demonstrating the natural phenomena nowadays and discovering the history of nature. This study describes a subtopic of geochemistry: inorganic isotopes and trace elements, and discusses the application of the isotopes and trace elements in studies of geothermal spring water and ore deposit. The study of water samples in Hengjing, China was accomplished with the help of gas isotope analysis. The carbon isotope ratios and gas compositions indicate that the thermal waters are mostly sourced from meteoric and mantle sources in this area. The He isotope could evolute from mantle fluid, and CO2 is a product of the carbonate decomposition of rocks at high temperatures. The other study, conducted on the Zhaoxian ore deposit, revealed the origin and processes of formation of the different compositions of the ore. The magmatic-hydrothermal activity in this tectonically active area contributes much to the mineralization process of the ore, as shown by the analysis of trace elements of pyrite. The fluid inclusion He-Ar isotope shows that the ore was characterized by crust-mantle mixing with a little participation of meteoric water.

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Genesis of the Zhaoxian Gold Deposit, Jiaodong Peninsula, China: Insights From in-situ Pyrite Geochemistry and S-He-Ar Isotopes, and Zircon U-Pb Geochronology

Cited by 8 publications

References 30 publications

Characterization of deep ore-forming fluid in the Zhaoxian gold deposit within the Jiaodong gold province: insights from quartz vein fluid inclusion, in-situ trace element analysis, and S isotopic composition in pyrite

Characterization of deep ore-forming fluid in the Zhaoxian gold deposit within the Jiaodong gold province: insights from quartz vein fluid inclusion, in-situ trace element analysis, and S isotopic composition in pyrite

Nature and geochemical characteristics of ore-forming fluids in the Zhaoxian gold deposit, Jiaodong gold province, eastern China

Applications of trace element and isotope geochemistry in revealing origin and evolution of thermal spring water and ore deposit

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