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《山东七宝山隐爆角砾岩型金铜矿床含矿蚀变斑岩石英颗粒中高温高盐度沸腾包裹体的发现及其意义》.pdf

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10000569/2010/026(11)331926 ActaPetrologicaSinica 岩石学报 山东七宝山隐爆角砾岩型金铜矿床含矿蚀变斑岩石英 颗粒中高温高盐度沸腾包裹体的发现及其意义 1 1 2 3 孙思 李永刚 张小允 刘洪举 1 1 2 3 SUNSi,LIYongGang,ZHANGXiaoYunandLIUHongJu 1中国科学院地质与地球物理研究所岩石圈演化国家重点实验室,北京 100029 2山东省五连县宝山矿业公司,五莲 262321 3山东省第四地质矿产勘查院,潍坊 261021 1StateKeyLaboratoryofLithosphericEvolution,InstituteofGeologyandGeophysics,ChineseAcademyofSciences,Beijing100029,China 2BaoshanMineralCorporationinWulianCountyofShandongProvince,Wulian262321,China 3No4ExplorationInstituteofGeologyandMineralResources,Weifang261021,China 20100812收稿,20100914改回 SunS,LiYG,ZhangXYandLiuHJ2010Boilingfluidinclusionsofhightemperatureandhighsalinityinthequartz grainsinalteredporphyryfromtheAuCubearingcryptoexplosionbrecciapipeatQibaoshan,ShandongProvinceandtheir significanceActaPetrologicaSinica,26(11):3319-3326 Abstract  TheAuCubearingcryptoexplosionbrecciapipeatQibaoshan,ShandongProvincewaspreviouslyconsideredtobean epithermalhydrothermaldepositwithlowsalinityThisstudycarriedouttheinvestigationsonfluidinclusionsofthequartzgrainsin alteredporphyryfromtheAuCubearingcryptoexplosionbrecciapipeOurresultsshowthatthequartzfromtheorebearingaltered porphyrycontainsabundantboilingfluidinclusions,includingvariousdaughtermineralsbearingmultiphaseinclusionsThe microtemperaturemeasurementontheseinclusionssuggeststhattheseinclusionshomogenizedatsimilartemperaturesinanarrow range:374~404℃,andtheirsalinitycanbeashighas48%NaCleqvThelaserRamanspectrumandscanningelectronmicroscopy energydispersivespectrumanalysisofthedaughtermineralsinthemultiphasefluidinclusionsdemonstratesthatbesideshalite, hematite,barites,chalcopyriteandpyritearealsoubiquitousThequartzgrainsbearingboilingfluidinclusionswithhightemperature andsalinityaremorelikelytoformduringrecrystallizationintheprocessofearlyorefluidactivitythantobethephenocrystofthe porphyryTheseindicatethatinthedeepthereexistboilingflu
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