首页|Geology and S-Pb isotope geochemistry of the Hatu gold deposit in West Junggar,NW China:Insights into ore genesis and metal source

Geology and S-Pb isotope geochemistry of the Hatu gold deposit in West Junggar,NW China:Insights into ore genesis and metal source

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Geology and S-Pb isotope geochemistry of the Hatu gold deposit in West Junggar,NW China:Insights into ore genesis and metal source
The Hatu gold deposit is the largest historical gold producer of the West Junggar,western China,with an Au reserve of about 62 t.The orebodies were controlled by NE-,EW-,and NW-trending subsidiary faults associ-ated with the Anqi fault.This deposit exhibits characteristics typical of a fault-controlled lode system,and the orebod-ies consist of auriferous quartz veins and altered wall rocks within Early Carboniferous volcano-sedimentary rocks.Three stages of mineralization have been identified in the Hatu gold deposit:the early pyrite-albite-quartz stage,the middle polymetallic sulfides-ankerite-quartz stage,and late quartz-calcite stage.The sulfur isotopic values of pyrite and arsenopyrite vary in a narrow range from-0.8‰ to 1.3‰ and an average of 0.4‰,the near-zero δ34S values implicate the thorough homogenization of the sulfur iso-topes during the metamorphic dehydration of the Early Carboniferous volcano-sedimentary rocks.Lead isotopic results of pyrite and arsenopyrite(206Pb/204Pb=17.889-18.447,207Pb/204Pb=15.492-15.571,208Pb/204Pb=37.802-38.113)are clustered between orogenic and mantle/upper crust lines,indicating that the lead was mainly sourced from the hostrocks within the Early Carboniferous Tailegula For-mation.The characteristics of S and Pb isotopes suggest that the ore-forming metals of the Hatu orogenic gold deposit are of metamorphogenic origin,associated with the continental collision between the Yili-Kazakhstan and Siberian plates during the Late Carboniferous.

Hatu gold depositSulfur isotopeLead isotopeOrogenic gold depositWest Junggar

Shen Han、Zhenju Zhou、Xiaohua Deng、Yanshuang Wu、Xi Chen、Abulimiti Aibai、Yong Wang、Xiaoyu Jia、Yanjing Chen

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Key Laboratory of Orogenic Belts and Crustal Evolution of Ministry of Education,Peking University,Beijing 100871,China

Institute of Geomechanics,Chinese Academic of Geological Science,Beijing 100081,China

Key Laboratory of Paleomagnetism and Tectonic Reconstruction of Ministry of Natural Resources,Beijing 100081,China

Radiogenic Isotope Facility,School of Earth and Environmental Sciences,The University of Queensland,Brisbane 4072,Australia

Key Laboratory of Western China's Mineral Resources and Geological Engineering,Ministry of Education,School of Earth Science and Resources,Chang'an University,Xi'an 710054,China

Xinjiang Mineral Resources Research Center,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,China

Guangdong Provincial Key Lab of Geodynamic and Geohazards,School of Earth Sciences and Geological Engineering,Sun Yat-Sen University,Guangzhou 510275,China

Western Region Gold Co.,Ltd.,Urumqi 830002,China

The National 305 Project Office of the People's Government of Xinjiang Uygur Autonomous Region,Urumqi 830000,China

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Hatu gold deposit Sulfur isotope Lead isotope Orogenic gold deposit West Junggar

2024

10.1007/s11631-024-00727-w

地球化学学报(英文版)
中国科学院地球化学研究所

地球化学学报(英文版)

EI
影响因子：0.33
ISSN：2096-0956
年,卷(期)：2024.43(6)