Mineral Chemistry and Boron Isotopic Composition of Tourmaline from the Devonian Metallogenic District of Shanyang-Zhashui,Eastern Qinling

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摘要 Tourmalineiswidespreadinthehoststrataofstrata-boundbasemetalsulphidedepositsintheDevonianmetallogenicdeistrictaroundShanyang-ZhashuiineasternQinling,Asamemberoftheschorl-draviteseries,thetourmalineischaracterizedbyMg>FeandNa>Ca,showingapparentchemicalzonationwhichrecordsthegeochemistryduringitsformationandsubsequentregionalmetamorphismandhydrothermaloverprint.Theclosesimilarityinchemicalandisotopicconstitutionsbetweenthetourmalineofthemainmetallogenicepochinthisdistrict[FeO/(FeO_MgO)=0.34-0.39andδ^11B=-7.6‰--8.8‰]andthoserelatedtomassivesulphidedepositstypicalofsubmarine(exhalative)hydrothermalsedimentation
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出版日期 1997年03月13日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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