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1、1000-0569/2010/026(06)-1751-59ActaPetrologicaSinica巖石學(xué)報(bào)云南哀牢山大坪金礦床成礦流體H-O-C-S同位素*組成及其成礦意義1,21,2,3**3,43,51,233石貴勇孫曉明張燕熊德信翟偉潘偉堅(jiān)胡北銘1,21,2,3**3,43,51,233SHIGuiYong,SUNXiaoMing,ZHANGYan,XIONGDeXin,ZHAIWei,PANWeiJianandHUBeMiing11中山大學(xué)海洋學(xué)院,廣州51027521廣東省海洋資源與近岸工程重點(diǎn)實(shí)驗(yàn)室,廣州51927531中山大學(xué)地球科學(xué)系,廣州51027
2、5141華東有色地質(zhì)勘查局,南京21000751肇慶學(xué)院,肇慶52606111SchoolofMarineSciences,SunYat-senUniversity,Guangzhou510275,China21GuangdongProvincialKeyLaboratoryofMarineResourcesandCoastalEngineering,Guangzhou519275,China31DepartmentofEarthSciences,SunYat-senUniversity,Guangzhou510275,China41EasternChinaGeolog
3、ical&MiningOrganizationforNon-ferrousMetals,Nanjing210007,China51ZhaoqingUniversity,Zhaoqing526061,China2010-02-28收稿,2010-05-10改回1ShiGY,SunXM,ZhangY,XiongDX,ZhaiW,PanWJandHuBM120101H-O-C-Sisotopiccompositionsofore-formingfluidsinDapinggolddepositinAilaoshangoldbelt,YunanProvince,China1Ac
4、taPetrologicaSinica,26(6):1751-1759AbstractDapingisoneofthelargestCenozoicorogenictypegolddepositsinAilaoshangoldbelt1GoldoresintheDapingmaybedividedintotwotypes:(1)LateProterozoicdioritehosted;(2)MaludongFormationofMiddleDevonian(D2m)limestonehosted1Inthisstudy,H-O-C-Sisotopiccompositio
5、nsoffluidinclusions,hydrothermalcarbonatemineralsandsulphidesfromtheDaping18auriferousquartzveinswereanalysed,andtheresultsshowthat:Inthedioritehostedgoldores,theDOH2OandDDare2139j~13347159jand-85j~-60j,theDCofhydrothermalcarbonatemineralsare-417j~-416j,DSofpyriteandgalenaare-218j~716j(a
6、verage311j)and012j~613j(average210j),respectively,whileintheMiddleDevonian(D2m)1813limestonehostedgoldores,theDOH2OandDDare4136j~6182jand-75j~-67j,DCofhydrothermalcarbonateminerals34are-716j~-015j,DSofpyriteare212j~1012j(average615j),respectively,suggestingthatstableisotopiccompositionso
7、fore-formingfluidsinthetwodifferenttypegoldoresarenearlythesame1Bothoftheirore-formingfluidsandmaterialsmighthavederivedfromsamesource:Lowercrustanduppermantle1Dapingisatypicalductileshearzonecontrolledmesothermalgolddeposit,crust-mantleinteractionoccurredattheearlyofHima
