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Genesis of the Jinding Zn-Pb deposit, northwest Yunnan Province, China: Constraints from rare earth elements and noble gas isotopes
Yongyong Tang;  Xianwu Bi;  Mostafa Fayek;  Finlay M.Stuartc;  Liyan Wu;  Guohao Jiang;  Leiluo Xu;  Feng Liang
2017
Source PublicationOre Geology Reviews
Volume90Pages:970-986
Abstract

The giant sediment-hosted Jinding zinc-lead deposit is located in the Lanping Basin, northwestern Yunnan Province, China. The genesis of the deposit has long been debated and the sources of the ore-forming fluids and metals are controversial. This study presents rare earth element (REE) and noble gas isotope data that constrain the origins of the ore fluids and the heat source driving the hydrothermal circulation. The early-stage sulfides are enriched in light REEs and have high ∑REE values (30.8–94.8 ppm) and weakly negative Eu (δEu 0.85–0.89) and Ce anomalies (δCe 0.84–0.95), suggesting that the fluids were likely derived from dissolution of Upper Triassic marine carbonates with input of REEs from aluminosilicate rocks in the basin. In contrast, the late-stage sulfides have irregular REE patterns, generally low ∑REE values (0.24–10.8 ppm) and positive Eu (δEu 1.22–10.9) and weakly negative Ce anomalies (δCe 0.53–0.90), which suggest that the ore-forming fluids interacted with evaporite minerals. The 3He/4He (0.01–0.04 Ra) and 40Ar/36Ar values (301–340) of the ore-forming fluids indicate crustal and atmospheric origins for these noble gases. These findings are in agreement with the published fluid inclusion microthermometry data and the results of H, O, C, S, Pb and Sr isotope studies. Our data, in combination with published results, support a two-stage hydrothermal mineralization model, involving early-stage basinal brines and late-stage meteoric water that acquired metals and heat from crustal sources.

KeywordOrigin Noble Gas Isotopes Rare Earth Elements Jinding Sanjiang Metallogenic Domain (Smd)
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/7834
Collection矿床地球化学国家重点实验室
Affiliation1.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
2.Department of Geological Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
3.Scottish Universities Environmental Research Center, East Kilbride G75 0QF, UK
First Author Affilication中国科学院地球化学研究所
Corresponding Author Affilication中国科学院地球化学研究所
Recommended Citation
GB/T 7714
Yongyong Tang;Xianwu Bi;Mostafa Fayek;Finlay M.Stuartc;Liyan Wu;Guohao Jiang;Leiluo Xu;Feng Liang. Genesis of the Jinding Zn-Pb deposit, northwest Yunnan Province, China: Constraints from rare earth elements and noble gas isotopes[J]. Ore Geology Reviews,2017,90:970-986.
APA Yongyong Tang;Xianwu Bi;Mostafa Fayek;Finlay M.Stuartc;Liyan Wu;Guohao Jiang;Leiluo Xu;Feng Liang.(2017).Genesis of the Jinding Zn-Pb deposit, northwest Yunnan Province, China: Constraints from rare earth elements and noble gas isotopes.Ore Geology Reviews,90,970-986.
MLA Yongyong Tang;Xianwu Bi;Mostafa Fayek;Finlay M.Stuartc;Liyan Wu;Guohao Jiang;Leiluo Xu;Feng Liang."Genesis of the Jinding Zn-Pb deposit, northwest Yunnan Province, China: Constraints from rare earth elements and noble gas isotopes".Ore Geology Reviews 90(2017):970-986.
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