1503_651674.pdf — page 1

Chen et al.: Metallogenic setting and material source of Caihong copper-lead-zinc polymetallic deposit 
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APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH 15(3): 651-674. 
http://www.aloki.hu ● ISSN 1589 1623 (Print) ● ISSN 1785 0037 (Online) 
DOI: http://dx.doi.org/10.15666/aeer/1503_651674 
 2017, ALÖKI Kft., Budapest, Hungary 
METALLOGENIC SETTING AND MATERIAL SOURCE OF 
CAIHONG COPPER-LEAD-ZINC POLYMETALLIC DEPOSIT IN 
XINJIANG, CHINA: EVIDENCES FROM A RESEARCH ON 
LITHOGEOCHEMISTRY, CHRONOLOGY AND STABLE 
ISOTOPE  
CHEN, C.1 ‒ WU, C. M.1* ‒ LÜ, X.1,2 ‒ SU, Y. Y.3 ‒ AISHAN, M.4 
1Institute of Geological Survey, China University of Geosciences, Wuhan, China, 430074  
2Faculty of Earth Resources, China University of Geosciences, Wuhan, China, 430074 
3Zijin Mining Group Co., Ltd, Shanghang, China, 364200 
4Faculty of Geology and Mining, Xinjiang University, Urumchi, China, 830046 
*Corresponding author 
e-mail: Wu_cug@foxmail.com; phone:027-67883017; fax:027-67883661 
(Received 24th Oct 2016; accepted 20th Dec 2016) 
Abstract. Caihong copper-lead-zinc polymetallic deposit is located in the east of the orogenic belt of 
South Tianshan in Xinjiang, of which ore types mainly include lamellar, stripped and veined, net-veined 
Cu-Pb-Zn ore. Two types of ore forms and the differences among mineral assemblages showed that the 
deposit had gone through multi-stage mineralization. Research results showed that Caihong deposit was 
the  volcanic exhalation sedimentation type deposit in the early mineralization stage, with the age of 
volcanic eruption of 426±4.2 Ma. Mineralization was formed in the oceanic crust subduction island-arc 
rift setting in the Middle-Late Silurian. The higher δ34S value in ore sulfide and unreached fractionation 
equilibrium indicated that the sulphur in this stage was derived from the continental marginal arc volcanic 
magma and the seawater sulfate in the late Early Paleozoic Era. The D value and 18O value in quartz, as 
well as the Eu positive anomaly of sulfide implied that the ore-forming fluids were derived from the 
mixing of the submarine hydrothermal solution and magmatic water. The deposit was the magmatic 
hydrothermal filling-metasomatic type deposit in the late mineralization stage, and the mineralization was 
closely related to the Zhongbao granite intrusion, formed in the collision-extension transformation stage 
of the plates in the Early Permian. The lower δ34S value of veined ore sulfide indicated that sulphur in this 
stage was mainly deep-seated magmatic sulphur in the Early Permian. The D value and 18O value in ore 
quartz, as well as the Eu negative anomaly of the sulfide implied that ore-forming fluid was derived from 
the mixing of the magmatic water of granite body in the late mineralization stage and the atmospheric 
precipitation.  
Keywords: South Tianshan, Caihong deposit, ore genesis, U-Pb dating, geochemistry 
Introduction 
Caihong copper-lead-zinc polymetallic deposit is located in the east of the orogenic 
belt of South Tianshan in Xinjiang,which includes lamellar Zn-Pb-Cu ore bed, as well 
as the much developed veined and net-veined filling-metasomatic Cu-Pb-Zn ore body. 
Xue et al. (2012) suggested that the deposit was volcanic eruption sedimentation-
volcanic hydrothermal superimposed type deposit, of which deformation was caused by 
the early-stage volcanic hydrothermal. However, Su et al. (2011) believed that it was the 
volcanic sedimentation-magmatic hydrothermal superimposed deformation type deposit, 
and the superimposed mineralization was closely correlated with the magmatic activity 
in late plate collision. However, their samples were mainly veined ore, not containing