云南芦子园铅锌矿床地球化学、流体包裹体及稳定同位素特征

夏庆霖; 陈永清; 卢映祥; 蒋成兴; 刘红光; 吕志成

Volume 30 Issue 2

Mar. 2005

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Article Navigation > Earth Science > 2005 > 30(2): 177-186

XIA Qing-lin, CHEN Yong-qing, LU Ying-xiang, JIANG Cheng-xing, LIU Hong-guang, LU Zhi-cheng, 2005. Geochemistry, Fluid Inclusion, and Stable Isotope Studies of Luziyuan Pb-Zn Deposit in Yunnan Province, Southwestern China. Earth Science, 30(2): 177-186.

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Geochemistry, Fluid Inclusion, and Stable Isotope Studies of Luziyuan Pb-Zn Deposit in Yunnan Province, Southwestern China

1.
State Key Laboratory of Geo-Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China
2.
The Key Laboratory of Resources Quantitative Assessment & Information Engineering, Ministry of Land and Resources, Wuhan 430074, China
3.
Development & Research Center, China Geological Survey, Beijing 100037, China
4.
Geological Survey of Yunnan Province, Kunming 650011, China
5.
China Library of Geosciences, Beijing 100083, China

Received Date: 2004-06-23
Publish Date: 2005-03-25

Abstract

Abstract

Carbonate-hosted lead-zinc sulfide veins in the Upper Cambrian are located in the southern area of the Baoshan-Zhenkang Paleozoic sedimentary basin, Yunnan Province. Geologic evidence suggests that controls on the deposit are both stratigraphic and structural. The Luziyuan Pb-Zn deposit, hosted by marble and marbleization-limestone of the Shahechang Group, is the largest in this area. Mineralization consists of galena, sphalerite, chalcopyrite, pyrite, and magnetite. Alteration consists of skarnization, chloritization, silicification, pyritization, and marbleization. Fluid inclusion studies indicate that the mineralization has two main stages: the lower-middle temperature stage (homogenization temperatures of 160 ℃ to 280 ℃) and the upper-middle temperature stage (homogenization temperatures of 280 ℃ to 420 ℃). Sulfide has a very uniform S, Pb isotope composition, with δ(³⁴S)=(9.23-10.17)×10^-3, w(²⁰⁶Pb)/w(²⁰⁴Pb)=18.224-18.338, w(²⁰⁷Pb)/w(²⁰⁴Pb) =15.715-15.849, and w(²⁰⁸Pb)/w(²⁰⁴Pb)=38.381-38.874. Both the S and Pb isotopes of ore indicate the partial role of magma hydrothermal fluid in mineralization. The carbonate-hosted Pb-Zn deposits in the Zhenkang area are considered to be strata-bound hydrothermal deposits that formed in favorable tectonic areas in the basis of ore source beds, are associated with magma activities, and have the features of multi-epochs and multi-stages as well as multi-sources in mineralization.
- carbonate-hosted Pb-Zn deposits,
- geochemistry,
- fluid inclusion,
- stable isotope (S,
- Pb)

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References(25)

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