Fluid inclusions and C-H-O-S isotope systematics of early Permian porphyry Mo mineralization of the West Junggar region, NW China: the Suyunhe example

doi:10.1080/00206814.2016.1259082

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院矿产资源研究重点实验室

	Fluid inclusions and C-H-O-S isotope systematics of early Permian porphyry Mo mineralization of the West Junggar region, NW China: the Suyunhe example
	Cao, Chong 1,2; Shen, Ping 1; Li, Changhao 1,2; Zheng, Guoping 3
刊名	INTERNATIONAL GEOLOGY REVIEW
	2017
卷号	59 期号:9 页码:1195-1217
关键词	Suyunhe porphyry Mo deposit metallogenic stages ore fluids S-H-O-C isotope systematics low-fluorine porphyry Mo deposit
ISSN号	0020-6814
DOI	10.1080/00206814.2016.1259082
文献子类	Article
英文摘要	The Suyunhe porphyry Mo deposit, located in the West Junggar terrane, is the largest molybdenum deposit found in Xinjiang to date, with a proven reserve of 0.57 Mt. The Suyunhe deposit is associated with Early Permian granitic rocks, which emplaced into the volcano-sedimentary sequences of the Middle Devonian Barluk Formation. Four metallogenic stages are identified in this study. Stage I is marked by the quartz-magnetite-K-feldsparbiotite +/- pyrite +/- molybdenite veins, which mainly occurred in the intensively potassic alternation zone and were formed at high temperature (>481 degrees C), high salinity (58.6-65.18wt.%), and relatively high oxygen fugacity conditions with a fluid system of NaCl-H2O-CO2. Stage II is the main metallogenic stage and develops numerous quartz-molybdenite +/- pyrite veins associated with muscovite-chlorite alteration, which were formed by immiscible fluids at medium-high temperature (210-427 degrees C), medium-high salinity (43.36-49.90wt.%), and relatively low oxygen fugacity conditions with the fluid system of NaCl-H2O-CO2-CH4-C2H6. After the main Mo-mineralization, quartz-polymetallic sulphides veins associated with quartz-sericite alteration were formed by fluids at medium-low temperature, low-salinity conditions with the fluid system of NaCl-H2O-CO2 in stage III. The following quartz-polymetallic sulphide veins are quartz-calcite +/- pyrite veins associated with calcite alteration, which were formed by fluids at low temperature and low-salinity conditions with a fluid system of NaCl-H2O in stage IV.The O-18 parts per thousand values indicate that the ore fluids of stages I and II are dominated by magmatic water, whereas stages III and IV are dominated by meteoric water. A wide range of S-34 parts per thousand values (-7.1to3.4 parts per thousand) of sulphides between stages I and II indicates that increasing the reducibility plays an important role in molybdenum mineralization. The C-13(CH4) values suggest that CH4 of the ore fluids mainly results from the assimilation-contamination of carbonaceous country rocks, and partly derives from magma. However, the C-13(CO2) values suggest that CO2 of the ore fluids mainly originates from magma, and minor derives from wall-rocks as well as meteoric water.
WOS关键词	MOLYBDENUM DEPOSIT ; BRITISH-COLUMBIA ; COPPER-DEPOSITS ; HYDROTHERMAL ALTERATION ; ORE-FLUIDS ; AU DEPOSIT ; NEW-MEXICO ; NE CHINA ; EVOLUTION ; GEOCHEMISTRY
WOS研究方向	Geology
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000402857500009
资助机构	National Natural Science Foundation of China(U1303293 ; Key Deployment Project of the Chinese Academy of Sciences(KJZD-EW-TZ-G07) ; National 305 Project(2011BAB06B01) ; 41390442 ; 41272109) ; National Natural Science Foundation of China(U1303293 ; Key Deployment Project of the Chinese Academy of Sciences(KJZD-EW-TZ-G07) ; National 305 Project(2011BAB06B01) ; 41390442 ; 41272109) ; National Natural Science Foundation of China(U1303293 ; Key Deployment Project of the Chinese Academy of Sciences(KJZD-EW-TZ-G07) ; National 305 Project(2011BAB06B01) ; 41390442 ; 41272109) ; National Natural Science Foundation of China(U1303293 ; Key Deployment Project of the Chinese Academy of Sciences(KJZD-EW-TZ-G07) ; National 305 Project(2011BAB06B01) ; 41390442 ; 41272109)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/52890]
专题	地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者	Shen, Ping
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China 3.Xinjiang Bur Geol & Mineral Explorat & Dev, Reg Geol Survey Party 1, Urumqi, Peoples R China
推荐引用方式 GB/T 7714	Cao, Chong,Shen, Ping,Li, Changhao,et al. Fluid inclusions and C-H-O-S isotope systematics of early Permian porphyry Mo mineralization of the West Junggar region, NW China: the Suyunhe example[J]. INTERNATIONAL GEOLOGY REVIEW,2017,59(9):1195-1217.
APA	Cao, Chong,Shen, Ping,Li, Changhao,&Zheng, Guoping.(2017).Fluid inclusions and C-H-O-S isotope systematics of early Permian porphyry Mo mineralization of the West Junggar region, NW China: the Suyunhe example.INTERNATIONAL GEOLOGY REVIEW,59(9),1195-1217.
MLA	Cao, Chong,et al."Fluid inclusions and C-H-O-S isotope systematics of early Permian porphyry Mo mineralization of the West Junggar region, NW China: the Suyunhe example".INTERNATIONAL GEOLOGY REVIEW 59.9(2017):1195-1217.