Ore-forming fluids and metallogenetic mechanism of Sibozi-Liubozi molybdenum-copper deposit in Qinglong County, Hebei Province

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	Ore-forming fluids and metallogenetic mechanism of Sibozi-Liubozi molybdenum-copper deposit in Qinglong County, Hebei Province
	Li, Q (Li Qiang); Meng, XY (Meng XiangYuan); Wu, F (Wu Feng); Wang, LS (Wang LiSheng); Zhang, ZX (Zhang ZhiXin); Yang, FQ (Yang FuQuan); Liu, F (Liu Feng)
刊名	ACTA PETROLOGICA SINICA
	2012
卷号	28 期号:1 页码:302-318
关键词	Fluid inclusions Stable isotopic Ore-forming fluids Metallogenetic mechanism Molybdenum-copper deposit Sibozi-Liubozi
ISSN号	1000-0569
英文摘要	Sibozi-Liubozi molybdenum-copper deposit in Qinglong County is located in the east of Yanliao metallogenic belt, which is a newly-discovered medium-sized molybdenum-copper deposit. Molybdenite occurs in veinlets, stockwork, disseminated and membrane in the skarn hosted in quartz sandstone and dolomite, Changcheng System. The molybdenum mineralization is closely related with silicification. Ore bodies occur as bedded-like, vein and lenticular. On the basis of field evidence and petrographic analysis, the ore-forming process can be divided into two mineralization periods; skarn and quartz-sulfide. The quartz-sulfide period represents the main molybdenum-copper mineralization episode in the Sibozi-Liubozi deposit. Inclusions of the skarn period are dominantly fluid inclusions, while inclusions in quartz of the quartz-sulfide period mostly contain liquid inclusions, CO2 bearing three-phase inclusions and pure CO2 phase inclusions. Ore-forming fluids of skarn period are NaCl-H2O system, the homogenization temperatures and salinities vary from 192 to 497 degrees C and from 5.41% to 16.53% equivalent respectively while the densities range from 0.59 to 0.92g/cm(3). Ore-forming fluids of quartz-sulfide period are NaCl-H2O-CO2(+/- CH4/N-2) type of fluids, the homogenization temperatures and salinities vary mainly from 160 to 330 degrees C and from 2.07% to 15.17% equivalent respectively while the densities range from 0.69 to 1.01g/cm(3). The delta O-18(SMOW) values of quartz in the ore vein range from 9.6 parts per thousand to 14 parts per thousand with corresponding delta O-18(H2O) values of -3.61 parts per thousand to 5.30 parts per thousand and delta D values of fluid inclusions between -128 parts per thousand and -80 parts per thousand. The isotopic data imply that the ore-forming fluids of Sibozi-Liubozi molybdenum-copper deposit have the characteristic of mixing magmatic and meteoric water. The delta S-34 values of sulfide range from -0.9 parts per thousand to 5.7 parts per thousand with an average of 2.9 parts per thousand, indicating that the sulfur in the fluids was derived from deep-seated magma. The Sibozi-Liubozi molybdenum-copper deposit took place in the earlier times of Early Jurassic, with its metallogenesis related to the late granite porphyry magma hydrothermal activity.
学科主题	矿床地质
WOS关键词	GEODYNAMIC SETTINGS ; NORTHERN CHINA ; THRUST BELT ; S-ISOTOPE ; MINERALIZATION ; GRANITES ; PLUTON ; QUARTZ ; OXYGEN ; WATER
WOS研究方向	Geology
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000300386700022
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39552]
专题	中国地质调查局
作者单位	Chinese Acad Sci, Xinjiang Res Ctr Mineral Resources, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China
推荐引用方式 GB/T 7714	Li, Q ,Meng, XY ,Wu, F ,et al. Ore-forming fluids and metallogenetic mechanism of Sibozi-Liubozi molybdenum-copper deposit in Qinglong County, Hebei Province[J]. ACTA PETROLOGICA SINICA,2012,28(1):302-318.
APA	Li, Q .,Meng, XY .,Wu, F .,Wang, LS .,Zhang, ZX .,...&Liu, F .(2012).Ore-forming fluids and metallogenetic mechanism of Sibozi-Liubozi molybdenum-copper deposit in Qinglong County, Hebei Province.ACTA PETROLOGICA SINICA,28(1),302-318.
MLA	Li, Q ,et al."Ore-forming fluids and metallogenetic mechanism of Sibozi-Liubozi molybdenum-copper deposit in Qinglong County, Hebei Province".ACTA PETROLOGICA SINICA 28.1(2012):302-318.