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Characteristics of fluid inclusions and its geological implication of the shangfanggou mo deposit in luanchuan county, henan province
Yang Yan1,2,3; Zhang Jing2; Yang YongFei4; Shi YingXia4
刊名Acta petrologica sinica
2009-10-01
卷号25期号:10页码:2563-2574
关键词Shangfanggou mo deposit Fluid inclusion Luanchuan mo ore-field Continental collision regime Intrusion-related hypothermal ore-system
ISSN号1000-0569
通讯作者Yang yan(yangyan520123@163.com)
英文摘要The shangfanggou mo deposit in henan province is located on the southern margin of north china craton oil the north of the luat chuan fault. the deposit is hosted in luanchuan group. the molybdenum mineralization process can be divided into early, middle and late three stages, which are characterized by assemblages of potassium feldspar-quartz-molybdenite-pyrite, quartzmolybdenite-polymetallic sulfide, and carbonate-quartz-fluorite, respectively. the fluid inclusions in quartz and carbonate can be recognize as three compositional types, i.e., co(2)-h(2)o, h(2)o-nacl and daughter crystal-containg. the primary fluid inclusions in minerals formed in early and middle stages are major of co(2)-h(2)o and daughter crystal-containing types, while those in late-stage minerals only of h(2)o-nacl type. the early-stage fluid is hypothermal (320 similar to 500 degrees c), high salinity (31.75 similar to 66.75 wt% nacl eqv.) and co(2)-rich and belongs to the typical intrusion-related hypothermal system. in middle stage, the fluid system is mesothermal (190 and co(2)-rich and belongs to the typical intrusion-related hypothermal system. in middle stage, the fluid system is mesothermal ( 190 similar to 400 degrees c) middle salinity ( mainly between 2.07 similar to 12.85wt% nacl eqv., minor up to > 30 wt% nacl eqv. and co(2) rich or bearing. the late-stage fluid is a co(2)-poor nacl-h(2)o system with low temperature ( 160 similar to 260 degrees c and low salinity < 4.8 wt% nacl eqv.). fluid holing occurred in early and middle stages, which caused co(2) escape, oxygen fugacity decrease and rapid precipitation of ore minerals fluid boiling is an important mechanism for the mo-mineralization of the shangfanggou mo deposit.
WOS关键词FREEZING-POINT DEPRESSION ; ORE-FORMING FLUIDS ; ISOTOPE GEOCHEMISTRY ; W DEPOSIT ; CHINA ; MINERALIZATION ; PORPHYRIES ; EVOLUTION ; NANNIHU ; VOLUMES
WOS研究方向Geology
WOS类目Geology
语种英语
出版者SCIENCE PRESS
WOS记录号WOS:000271670400021
内容类型期刊论文
URI标识http://www.corc.org.cn/handle/1471x/2405089
专题中国科学院大学
通讯作者Yang Yan
作者单位1.Chinese Acad Sci, KLML, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China
2.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
4.Peking Univ, Key Lab Orogen & Crust Evolut, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714
Yang Yan,Zhang Jing,Yang YongFei,et al. Characteristics of fluid inclusions and its geological implication of the shangfanggou mo deposit in luanchuan county, henan province[J]. Acta petrologica sinica,2009,25(10):2563-2574.
APA Yang Yan,Zhang Jing,Yang YongFei,&Shi YingXia.(2009).Characteristics of fluid inclusions and its geological implication of the shangfanggou mo deposit in luanchuan county, henan province.Acta petrologica sinica,25(10),2563-2574.
MLA Yang Yan,et al."Characteristics of fluid inclusions and its geological implication of the shangfanggou mo deposit in luanchuan county, henan province".Acta petrologica sinica 25.10(2009):2563-2574.
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