中条山落家河铜矿流体包裹体初步研究-论文.pdf

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1、1000-0569／2013／029(07)-2583—92ActaPetrologicaSinica岩石学报中条山落家i-'IN矿流体包裹体初步研究姜玉航罗勇。牛贺才郭双龙李宁波，JIANGYuHang，LU0Y0ng，NIUHeCai，GUOShuangL0ngandLINingB0，1．中国科学J广州地球化学研究所矿物学与成矿学重点实验室，广州5106402．中国科学院大学，北京1000493．南阳师范学院环境科学与旅游学院，南阳4730614．中条山有色金属集团有限公司，垣曲0437001．Ke

2、yLaboratoryofMineralogyandMetallogeny，GuangzhouInstituteofGeochemistry，ChineseAcademyofSciences，Guangzhou510640，China2．UniversityofChineseAcademyofSciences，Beijing100049，China3．CollegeofEnvironmentScienceandTourism，NanyangNormalUniversity，Nanyang473061，C

3、hina4．ZhongtiaoshanNon—FerrousMetalsGroupCo．，Ltd．，Yuanqu043700，China2013-02—13收稿．2013．05—30改回．JiangYH。LuoY。NiuHC，GuoSLandLiNB．2013．StudyonfluidinclusionsfromtheLuojiahecopperdepositinZhongtiaoshanregion．ActaPetrologicaSinica，29(7)：2583—2592AbstractLuojia

4、hecopperdepositislocatedintheLuojiahetectonic—erosionwindow，southeasternofZhongtiaorift．Cu—mineralizationoccursinthemetamorphicvolcanic—sedimentsoftheSongjiashanFormationwhichiscoveredbyMesoproterozoicandesiticrocksoftheXiyangheGroup．Thispaperfocuse$onth

5、estudyoffluidinclusionsinore—bearingquartzveinswhichareintergrowthwithore-body，todiscussthefeaturesofore—formingfluidsandtheimplicationsforCu—mineralization．Basedonsystematicallypetrographicobservation，fluidinclusionsareclassifiedintofivetypesbyphases：Pu

6、revaporinclusions(I-type)，pureaqueousinclusions(II—type)，vapor-richinclusions(III—type)，aqueous—richinclusions(IV—type)anddaughtermineral—bearinginclusions(V—type)．II—typeandIV—typeinclusionsaredominantintheupperorebody．andI-typeandV—typeinclusionsaredom

7、inantinthelowerorebody．ThecoexistenceofV—typewithI-typeinclusionsshowsthefeaturesofboilingassemblage．MicrothermometrydataindicatesthattherearetwodifferentsystemsofCaC12一NaC1一H2Osystem(IVal—type)andNaC1一H2Osystem(IVa2一type)intheliquid—richaqueousinclusion

8、s(IVatypes)，correspondingtotheupperquartzveinsandthelowerquartzveins．Bothhomogenizationtemperature()andsalinityofthetwotypesaredifferent，indicatingthattheore—formingfluidsmightoriginatefromtwodifferentfluidsources．TheThofI