THE SOURCE AND EVOLUTION OF METALLOGENIC FLUIDS IN THE DUOBAOSHAN-TONGSHAN PORPHYRY CU (MO) DEPOSIT, HEILONGJIANG, CHINA

	THE SOURCE AND EVOLUTION OF METALLOGENIC FLUIDS IN THE DUOBAOSHAN-TONGSHAN PORPHYRY CU (MO) DEPOSIT, HEILONGJIANG, CHINA
	Wei Hao 1; Xu Jiuhua 1; Zhang Guorui 1; Zeng Qingdong 2; Liu Jianming 2; Chu Shaoxiong 2; Jiang Baifang 3
刊名	CARPATHIAN JOURNAL OF EARTH AND ENVIRONMENTAL SCIENCES
	2014-11-01
卷号	9 期号:4 页码:61-71
关键词	Duobaoshan-Tongshan porphyry Cu (Mo) deposit fluid inclusion mineralization stage
ISSN号	1842-4090
文献子类	Article
英文摘要	The Duobaoshan-Tongshan porphyry Cu (Mo) deposit, located in the eastern part of the Xingmeng orogenic belt, is the largest porphyry deposit in the Duobaoshan-Aershan Metallogenic belt in central and northern Daxinganling. The ore bodies are mainly hosted inside a granodiorite and at the base of the Duobaoshan Formation. Four ore-forming stages are recognized in the Duobaoshan-Tongshan deposit: (I) Potassic and silicic stage; (II) Silicification-molybdenum mineralizing stage; (III) Phyllic-copper mineralizing stage; and (IV) carbonate-quartz stage. Fluid inclusions of stage (I) are characterized by aqueous, CO2-H2O and pure CO2 fluids, with homogenization temperatures of 245-400 degrees C, salinities of 6-10 wt%NaCl eqv., and densities of 0.5-0.9 g cm(-3). However, those of stage II are dominated by aqueous, CO2-H2O, daughter mineral-bearing inclusions, with peak homogenization temperatures of 260-300 degrees C and salinities of 1.7 - similar to 39wt%NaCl eqv., and densities of 0.3-1.1g cm(-3). Stage III is also characterized by aqueous and CO2-H2O inclusions, with peak homogenization temperatures of 200-280 degrees C, salinities of 0.1-24.8% wt% NaCl eqv., and densities of 0.5-1.0g cm(-3). whereas stage IV fluids are aqueous, with homogenization temperatures of 125-170 degrees C, salinities of 0.5-12.8 wt% NaCl eqv., and densities of 0.8-0.9g cm(-3). Respective trapping pressures for stage I, II, and III are 110-160MPa, 58-80MPa, and 8-17MPa, with corresponding formation temperature of 375-650 degrees C, 310-350 degrees C, and 210-290 degrees C. Laster Raman spectroscopic analysis indicates that the main components of the fluid inclusions are H2O and CO2. The hydrogen and oxygen isotopic compositions of the fluids responsible for alteration and mineralization are constrained by magmatic fluid and meteoric water, and indicate an evolution process from magmatic hydrothermal fluid to meteoric water-bearing fluid, and indicate the influence of the wall-rocks on the evolution process of the hydrothermal fluids. Microthermometry combined with field observations and fluid inclusion petrography suggest that the Duobaoshan porphyry deposit resulted from magmatic differentiation and the large-scale mixing of distinct fluid types. Moreover, complex structures in the mining area facilitated the transport of the hydrothermal mineralizing fluids and subsequent terminal precipitation. There is a close relationship between copper mineralization and NW-striking foliated shear zones, reflecting the control of later shear belts on the copper mineralization.
WOS关键词	FREEZING-POINT DEPRESSION ; COPPER-DEPOSIT ; INCLUSIONS ; PROVINCE
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	NORTH UNIV BAIA MARE
WOS记录号	WOS:000344580900006
资助机构	Duobaoshan mining company ; Duobaoshan mining company ; Duobaoshan mining company ; Duobaoshan mining company ; Duobaoshan mining company ; Duobaoshan mining company ; Duobaoshan mining company ; Duobaoshan mining company
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/85914]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhang Guorui
作者单位	1.Univ Sci & Technol Beijing, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Liaoning Nonferrous Geol Explorat Inst, Shenyang 110013, Peoples R China
推荐引用方式 GB/T 7714	Wei Hao,Xu Jiuhua,Zhang Guorui,et al. THE SOURCE AND EVOLUTION OF METALLOGENIC FLUIDS IN THE DUOBAOSHAN-TONGSHAN PORPHYRY CU (MO) DEPOSIT, HEILONGJIANG, CHINA[J]. CARPATHIAN JOURNAL OF EARTH AND ENVIRONMENTAL SCIENCES,2014,9(4):61-71.
APA	Wei Hao.,Xu Jiuhua.,Zhang Guorui.,Zeng Qingdong.,Liu Jianming.,...&Jiang Baifang.(2014).THE SOURCE AND EVOLUTION OF METALLOGENIC FLUIDS IN THE DUOBAOSHAN-TONGSHAN PORPHYRY CU (MO) DEPOSIT, HEILONGJIANG, CHINA.CARPATHIAN JOURNAL OF EARTH AND ENVIRONMENTAL SCIENCES,9(4),61-71.
MLA	Wei Hao,et al."THE SOURCE AND EVOLUTION OF METALLOGENIC FLUIDS IN THE DUOBAOSHAN-TONGSHAN PORPHYRY CU (MO) DEPOSIT, HEILONGJIANG, CHINA".CARPATHIAN JOURNAL OF EARTH AND ENVIRONMENTAL SCIENCES 9.4(2014):61-71.