内蒙古乌日尼图钨钼矿床成矿流体特征及地质意义

杨增海; 王建平; 刘家军; 王守光; 王清义; 康书光

doi:10.3799/dqkx.2012.135

Volume 37 Issue 6

Jun. 2012

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Article Navigation > Earth Science > 2012 > 37(6): 1268-1278

YANG Zeng-hai, WANG Jian-ping, LIU Jia-jun, WANG Shou-guang, WANG Qing-yi, KANG Shu-guang, 2012. Characteristics and Its Geological Significance of Fluid Inclusions of the Wurinitu W-Mo Deposit in Inner Mongolia, China. Earth Science, 37(6): 1268-1278. doi: 10.3799/dqkx.2012.135

Citation:

YANG Zeng-hai, WANG Jian-ping, LIU Jia-jun, WANG Shou-guang, WANG Qing-yi, KANG Shu-guang, 2012. Characteristics and Its Geological Significance of Fluid Inclusions of the Wurinitu W-Mo Deposit in Inner Mongolia, China. Earth Science, 37(6): 1268-1278. doi: 10.3799/dqkx.2012.135

Citation:

YANG Zeng-hai, WANG Jian-ping, LIU Jia-jun, WANG Shou-guang, WANG Qing-yi, KANG Shu-guang, 2012. Characteristics and Its Geological Significance of Fluid Inclusions of the Wurinitu W-Mo Deposit in Inner Mongolia, China. Earth Science, 37(6): 1268-1278. doi: 10.3799/dqkx.2012.135

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Characteristics and Its Geological Significance of Fluid Inclusions of the Wurinitu W-Mo Deposit in Inner Mongolia, China

doi: 10.3799/dqkx.2012.135

1.
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China
2.
School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China
3.
Geological Survey Institute of Inner Mongolia, Huhehaote 010020, China
4.
Inner Mongolia Ninth Geology Mineral Exploration and Development Co. Ltd., Xilinhaote 026000, China

Received Date: 2012-07-19
Available Online: 2021-11-09
Publish Date: 2012-06-15

Abstract

Abstract

The Wurinitu W-Mo deposit,located in Sunid Zuoqi area in the Inner Mongolia autonomous region,is a large W-Mo deposit 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. Petrographic study of fluid inclusions suggests that the main types of fluid inclusions of Wurinitu metallogenic fluid system are two-phase vapor-liquid inclusions,vapor-rich phase inclusions,liquid-rich phase inclusions and pure liquid phase inclusions. The homogenization temperature and salinity of the fluid inclusions vary in 130.0-371.7 ℃ (the peak value vary in 160-260 ℃) and 0.2%-15.9% NaCl eqv (the peak value vary in 0.2%-12.5% NaCl eqv). The deposit belongs to a medium-low temperature,medium-low salinity W-Mo deposit. Laser Raman spectroscopic and inclusion groups components studies indicate that gas composition of the ore-forming fluid are mainly H₂O and CO₂,some N₂ and O₂,and less CO,CH₄,C₂H₂,C₂H₄ and C₂H₆,liquid composition are mainly Ca²⁺,Na⁺,SO₄^2-,Cl^-,some K⁺,F^-,Mg²⁺ and NO₃^-,and less Br^- and Li⁺. The ore-forming fluids belong to the H₂O-NaCl-CO₂ system. The hydrogen and oxygen isotopic compositions of fluid inclusions showed that the ore-forming fluids had lower values of δ¹⁸O_water ranging from -2.11% to -0.11%,and the value of δD_water ranged from -85% to -108%. The ore-forming fluids came from the mixing of magma water and meteoric water. Based on the geological and ore-forming fluids characteristics of the deposit,it is concluded that the Wurinitu quartz vein type W-Mo deposit is a Yanshanian magmatism-related and moderate-low temperature hydrothermal system. The ore-forming materials were mainly derived from the depth.
- quartz vein type W-Mo deposit,
- fluid inclusions,
- hydrogen and oxygen isotope,
- Wurinitu,
- petrology,
- ore prospecting,
- ore deposits.

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References(34)

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Characteristics and Its Geological Significance of Fluid Inclusions of the Wurinitu W-Mo Deposit in Inner Mongolia, China

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