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1、礦物巖石地球化學(xué)通報·專題研究·BulletinofMineralogy,PetrologyandGeochemistryVo1.31No.1,Jan.2012黑龍江金廠金礦床18號礦體圍巖蝕變及短波紅外光譜特征孫雨沁”,許虹。一,李勝榮。,張巖1.山東省地質(zhì)科學(xué)實驗研究院,濟(jì)南250013;2.山東省金屬礦產(chǎn)成礦地質(zhì)過程與資源利用重點實驗室,濟(jì)南250013;3.中國地質(zhì)大學(xué)地球科學(xué)與資源學(xué)院,北京100083;4.中國地質(zhì)大學(xué)地質(zhì)過程與礦產(chǎn)資源國家重點實驗室,北京100083摘要:金廠金礦1
2、8號礦體圍巖蝕變發(fā)育順序從早到晚為:鉀化、硅化、綠泥石化、絹云母化、碳酸鹽化、高嶺土化,從內(nèi)往外依次發(fā)育青磐巖化帶、絹英巖化帶和鉀化帶。礦化出現(xiàn)在泥化和絹英巖化疊加處,以及泥化和青磐巖化疊加處。通過短波紅外光譜測試技術(shù),識別出本礦區(qū)有26種蝕變礦物,其中自云母含量與金礦體呈正相關(guān),說明絹云母化與金礦化關(guān)系密切;青磐巖化帶蝕變礦物組合為綠泥石+綠簾石+伊利石士埃洛石士蒙脫石士石英;鉀化帶蝕變礦物組合為鉀長石+高嶺石+埃洛石士蒙脫石±石英;絹英巖化帶蝕變礦物組合為絹云母+埃洛石士蒙脫石土高嶺石±石英
3、。關(guān)鍵詞:金廠金礦;圍巖蝕變;PIMA;蝕變礦物中圖分類號:P584文獻(xiàn)標(biāo)識碼:A文章編號:1007—2802(2012)01—0014—09CharacteristicsOfWall-RockAIterationandtheShortwaveInfraredSpectraforMineralsinthe18thOrebody,JinchangGoldDeposit,HeilongjiangProvinceSUNYu—qin’”,XUHong。”,LISheng—rong?!?,ZHANGYan'
4、。1.ShandongInstituteandLaboratoryofGeologicalSciences,Jinan250013,China;2.ShandongKeyLaboratoryofGeologicalProcessesandResourceUtilizationinMetallicMinerals,Jinan250013,China;3.SchooloftheEarthSciencesandResources,ChinaUniversityofGeosciences,Beijing
5、100083,China;4.StateKeyLaboratoryofGeologicalProcessesandMineralResources,ChinaUniversityofGeosciences,Beijing100083,ChinaAbstract:Thewall—rockalterationsequenceofthe18thorebodyintheJinchanggolddepositisfeldspathization,si—licifieation,chloritization
6、,sericitization,calcitizationandkaolinite,includingpropylitie,phyllieandpotassicaltera—tionzonesfromcentraltooutwordpartsofthecomplex.Thegoldmineralizationoccursmainlyintheoverlappedpartsofargillizationandphyllicalterationzonesandofargillizationandpr
7、opyliticalterationzones.26speciesofhy—drothermalalterationmineralswereidentifiedbytheshort—waveinfraredspectroscopetechnique.Thepositivecor—relationofmuscoviteandAucontentsinthesemineralssuggestedthatthegoldmineralizationiscloselyrelatedwiththeserici
8、tization.Themineralsassociatedwiththepropyliticalterationzonearechlorite+epidote+illite±hal—loysite土montmorillonite士quartz。themineralsinthepotassicalterationzoneareK—feldspar+kaolinite+hal—loysite±m(xù)ontmorillonite±quartzandthemineralsinthephyllicalter