Geology, Fluid Inclusion, and Sulfur Isotope Studies of the Chehugou Porphyry Molybdenum-Copper Deposit, Xilamulun Metallogenic Belt, NE China

doi:10.1111/j.1751-3928.2011.00161.x

	Geology, Fluid Inclusion, and Sulfur Isotope Studies of the Chehugou Porphyry Molybdenum-Copper Deposit, Xilamulun Metallogenic Belt, NE China
	Zeng, Qingdong; Liu, Jianming; Zhang, Zuolun; Zhang, Weiqing; Chu, Shaoxiong; Zhang, Song; Wang, Zaicong; Duan, Xiaoxia
刊名	RESOURCE GEOLOGY
	2011
卷号	61 期号:3 页码:241-258
关键词	Chehugou NE China porphyry Mo-Cu deposit Xilamulun metallogenic belt
ISSN号	1344-1698
DOI	10.1111/j.1751-3928.2011.00161.x
文献子类	Article
英文摘要	The Chehugou Mo-Cu deposit, located 56 km west of Chifeng, NE China, is hosted by Triassic granite porphyry. Molybdenite-chalcopyrite mineralization of the deposit mainly occurs as veinlets in stockwork ore and dissemination in breccia ore, and two ore-bearing quartz veins crop out to the south of the granite porphyry stock. Based on crosscutting relationships and mineral paragenesis, three hydrothermal stages are identified: (i) quartz-pyrite-molybdenite +/- chalcopyrite stage; (ii) pyrite-quartz +/- sphalerite stage; and (iii) quartz-calcite +/- pyrite +/- fluorite stage. Three types of fluid inclusions in the stockwork and breccia ore are recognized: LV, two-phase aqueous inclusions (liquid-rich); LVS, three-phase liquid, vapor, and salt daughter crystal inclusions; and VL, two-phase aqueous inclusions (gas-rich). LV and LVS fluid inclusions are recognized in vein ore. Microthermometric investigation of the three types of fluid inclusions in hydrothermal quartz from the stockwork, breccia, and vein ores shows salinities from 1.57 to 66.75 wt% NaCl equivalents, with homogenization temperatures varying from 114 degrees C to 550 degrees C. The temperature changed from 282-550 degrees C, 220-318 degrees C to 114-243 degrees C from the first stage to the third stage. The homogenization temperatures and salinity of the LV, LVS and VL inclusions are 114-442 degrees C and 1.57-14.25 wt% NaCl equivalent, 301-550 degrees C and 31.01-66.75 wt% NaCl equivalent, 286-420 degrees C and 4.65-11.1 wt% NaCl equivalent, respectively. The VL inclusions coexist with the LV and LVS, which homogenize at the similar temperature. The above evidence shows that fluid-boiling occurred in the ore-forming stage. delta(34)S values of sulfide from three type ores change from -0.61 parts per thousand to 0.86 parts per thousand. These delta(34)S values of sulfide are similar to delta(34)S values of typical magmatic sulfide sulfur (c. 0 parts per thousand), suggesting that ore-forming materials are magmatic in origin.
WOS关键词	MO DEPOSIT ; NORTHEAST CHINA ; INNER-MONGOLIA ; GEOCHEMISTRY ; EVOLUTION ; IMMISCIBILITY ; GEOCHRONOLOGY ; SYSTEMS ; VAPOR
WOS研究方向	Geology ; Mineralogy
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000292106000003
资助机构	National Natural Science Foundation of China(40972065) ; National Natural Science Foundation of China(40972065) ; Special Study of the Continuous Resources of Crisis Mine of China(20089931) ; Special Study of the Continuous Resources of Crisis Mine of China(20089931) ; Major State Basic Research Program of China(2006CB403507) ; Major State Basic Research Program of China(2006CB403507) ; National Natural Science Foundation of China(40972065) ; National Natural Science Foundation of China(40972065) ; Special Study of the Continuous Resources of Crisis Mine of China(20089931) ; Special Study of the Continuous Resources of Crisis Mine of China(20089931) ; Major State Basic Research Program of China(2006CB403507) ; Major State Basic Research Program of China(2006CB403507) ; National Natural Science Foundation of China(40972065) ; National Natural Science Foundation of China(40972065) ; Special Study of the Continuous Resources of Crisis Mine of China(20089931) ; Special Study of the Continuous Resources of Crisis Mine of China(20089931) ; Major State Basic Research Program of China(2006CB403507) ; Major State Basic Research Program of China(2006CB403507) ; National Natural Science Foundation of China(40972065) ; National Natural Science Foundation of China(40972065) ; Special Study of the Continuous Resources of Crisis Mine of China(20089931) ; Special Study of the Continuous Resources of Crisis Mine of China(20089931) ; Major State Basic Research Program of China(2006CB403507) ; Major State Basic Research Program of China(2006CB403507)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/74793]
专题	中国科学院地质与地球物理研究所
通讯作者	Zeng, Qingdong
作者单位	Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Qingdong,Liu, Jianming,Zhang, Zuolun,et al. Geology, Fluid Inclusion, and Sulfur Isotope Studies of the Chehugou Porphyry Molybdenum-Copper Deposit, Xilamulun Metallogenic Belt, NE China[J]. RESOURCE GEOLOGY,2011,61(3):241-258.
APA	Zeng, Qingdong.,Liu, Jianming.,Zhang, Zuolun.,Zhang, Weiqing.,Chu, Shaoxiong.,...&Duan, Xiaoxia.(2011).Geology, Fluid Inclusion, and Sulfur Isotope Studies of the Chehugou Porphyry Molybdenum-Copper Deposit, Xilamulun Metallogenic Belt, NE China.RESOURCE GEOLOGY,61(3),241-258.
MLA	Zeng, Qingdong,et al."Geology, Fluid Inclusion, and Sulfur Isotope Studies of the Chehugou Porphyry Molybdenum-Copper Deposit, Xilamulun Metallogenic Belt, NE China".RESOURCE GEOLOGY 61.3(2011):241-258.