%0 Journal Article
%T Evolution of multi-stage ore-forming fluid and mineralization: Evidence form fluid inclusions in Yulong porphyry copper deposit, East Tibet<br>藏东玉龙斑岩铜矿床多期流体演化与成矿的流体包裹体证据
%A Xie YuLing
%A Hou ZengQian
%A Xu JiuHua
%A Yang ZhiMing
%A Xu WenYi
%A He JianPing
%A <br>谢玉玲
%A 侯增谦
%A 徐九华
%A 杨志明
%A 徐文艺
%A 何建平
%J 岩石学报
%D 2005
%I 
%X Petrographic observation,microthermometry,Laser Raman Microprobe Analysis (LRM) and Scanning Electron Microscope/Energy Dispersion Spectrum(SEM/EDS) was performed to fluid inclusion in phenocryst quartz and molybdenite-quartz vein.Different kinds of inclusions was observed including melt inclusions,two phase aqueous fluid inclusions and multi-phase fluid inclusions with daughter minerals.Most of fluid inclusions in phenocryst quartz formed in K-silicate and quartz-sericite stage.Little melt inclusion survived later alteration.The ore-forming fluid related to K-silicate and quartz-sericite alteration is characterized by K- rich,high temperature and high salinity with meaning of magmatic origin.Argillic alteration is attributed to a Ca-rich,low-temperature fluid.From porphyry mineralization to hypergene mineralization,Ore-forming fluid evolved form NaCl-KCl-H_2O-CO_2(CH_4) to CaCl_2- H_2O-CO_2 system.The authors think that there are some origin affinity between early high temperature,K-rich fluid and later low temperature Ca-rich fluid.K-silicate,quartz sericite and argillic alteration occurred in different evolution stage.Unmixing of fluid caused by falling of pressure and temperature is the dominated factor for mineralization.
%K Yulong porphyry copper deposit
%K Fluid inclusion
%K Fluid evolution<br>玉龙斑岩铜矿床
%K 流体包裹体
%K 流体演化
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=15AB03FF5241980B&yid=2DD7160C83D0ACED&vid=659D3B06EBF534A7&iid=94C357A881DFC066&sid=113224FCB0E3054C&eid=BE34987501BA69F7&journal_id=1000-0569&journal_name=岩石学报&referenced_num=7&reference_num=27