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河南嵩纸房钼矿床流体包裹体研究及矿床成因-岩石学报.PDF

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10000569/2008/024(09)213348 ActaPetrologicaSinica 岩石学报 河南嵩县纸房钼矿床流体包裹体研究及矿床成因 1,2 1 1 3 3 邓小华  李文博  李诺 糜梅  张颖 1,2 1 1 3 3 DENGXiaoHua ,LIWenBo ,LINuo,MEIMeiandZHANGYing 1.北京大学造山带与地壳演化教育部重点实验室,北京 100871 2.南京大学内生金属矿床成矿机制研究国家重点实验室,南京 210093 3.中国科学院广州地球化学研究所成矿动力学重点实验室,广州 510640 1.KeyLaboratoryofOrogenandCrustEvolution,PekingUniversity,Beijing100871,China 2.StateKeyLaboratoryforMineralDepositsResrarch,NanjingUniversity,Nanjing210093,China 3.KLMD,GuangzhouInstituteofGeochemistry,ChineseAcademyofSciences,Guangzhou510640,China 20080427收稿,20080813改回. DengXH,LiWB,LiN,MeiM andZhangY.2008.FluidinclusionconstraintsontheoriginofZhifangModeposit Songxiancounty,Henanprovine.ActaGeologicaSinica,24(9):2133-2148 Abstract  TheZhifangModepositinSongxianCounty,HenanProvinceislocatedintheXiongerTerraneinnorthernQinling orogen.Itsorebodies,occurringasquartzveins,arehostedinvolcanicrocksoftheXiong’erGroupandcontrolledbysubsidiary faultsoftheMachayingfaultwhichisthesouthboundaryfaultoftheXiong’erterrane.Threestagesofhydrothermaloreforming processarerecognized,Early,MiddleandLate,characterizedbyquartzpyrite,quartzsulfidesandcarbonates,respectively.The earlystagequartzveinsormineralassemblagesarestructurallydeformedandbrecciated.Threetypesoffluidinclusions,i.e.CO 2 HO,HONaClanddaughtermineralbearing,areobservedinquartzcrystalsformedinearlyandmiddlestages;whilethelate 2 2 stagecalcitesonlycontainHONaClinclusions.Fromearlytolatestages,homogeneoustemperaturesoffluidinclusionsdecrease 2 from467~380℃(E),through360~250℃(M),to240~137℃(L);salinitieschangefrom018%~1313%NaCleqv(E), through001%~2070%NaCleqv(M),to035% ~1285%NaCleqv(L).Salinitiesofthedaughtercrystalbearingfluid inclusionswhichonlyoccurinearlyand
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