Isotope Geochemistry of the Wurinitu W-Mo Deposit in Sunid Zuoqi, Inner Mongolia, China

Geoscience ›› 2013, Vol. 27 ›› Issue (1): 13-23.

• Engineering Geology and Environmental Geology • Previous Articles Next Articles

Isotope Geochemistry of the Wurinitu W-Mo Deposit in Sunid Zuoqi, Inner Mongolia, China

YANG Zeng-hai¹, WANG Jian-ping^1,2, LIU Jia-jun¹, WANG Shou-guang³, WANG Qing-yi⁴, KANG Shu-guang⁴，ZHANG Jie-xian¹, ZHAO Yun¹

1State Key Laboratory of Geological Processes and Mineral Resources, School of Earth Sciences and Resources, China University of Geosciences,
Beijing100083, China; 2Guangxi Key Laboratory of Hidden Metallic Ore Deposit Exploration, Guilin University of Technology,Guilin,
Guangxi541004, China;3Geological Survey Institute of Inner Mongolia Autonomous Region, Hohhot, Inner Mongolia010020,China;
4Inner Mongolia Ninth Geology Mineral Exploration and Development Institute, Xilinhaote,Inner Mongolia026000, China

Received:2012-04-18 Revised:2012-09-25 Online:2013-01-16 Published:2013-01-17

Abstract

Abstract:

The Wurinitu W-Mo deposit，located in Sunid Zuoqi, Inner Mongolia, is a large scaled W-Mo deposit which is discovered in recent years.The W-Mo orebodies mainly occurred in Yanshanian granite rock body and the nearby contact zone，with the major type of veinlet mineralization.The measured δ³⁴S_V-CDT value of the Wurinitu orebody (0.6‰ to 4.1‰) varies in a very limited range and suggests that the formation of W-Mo ore-body is closely related to magmatism and the sulfur may be leached from the granite intrusion.Based on tectonic patterns of lead isotope and related parameters，the lead isotopic compositions of the Wurinitu orebody (²⁰⁸Pb/204Pb=38.115-38.353，²⁰⁷Pb/²⁰⁴Pb=15.528-15.591，206Pb/204Pb=18.375-18.528) indicate that the mineralization may be induced by the magmatism，and ore-forming material is characterized by the source of lower crust and show crustmantle mixing.δ¹³C_PDB and δ¹⁸O_SMOW of the hydrothermal calcite are from -8.63‰ to -6.41‰ and from -1.49‰ to 8.72‰, respectively.It shows that the hydrothermal calcite forms in two mineralization stages.The CO₂ in the earlier stage is related to the magma；and the later hydrothermal ore fluids show the characteristics of mixture fluids of meteoric water with magmatic water as the meteoric water added.

Key words: Wurinitu W-Mo deposit, ore-forming material, sulfur and lead isotope, carbon and oxygen isotope, Sunid Zuoqi, Inner Mongolia

CLC Number:

P618.6

YANG Zeng-hai,WANG Jian-ping,LIU Jia-jun,WANG Shou-guang,WANG Qing-yi. Isotope Geochemistry of the Wurinitu W-Mo Deposit in Sunid Zuoqi, Inner Mongolia, China[J]. Geoscience, 2013, 27(1): 13-23.

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Isotope Geochemistry of the Wurinitu W-Mo Deposit in Sunid Zuoqi, Inner Mongolia, China

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