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1、第29卷第6期地質(zhì)通報Vo1.29.NO.62010年6月GEoLoGICALBULLETINOFCHINAJun.,2010膠東牟平照島山金礦蝕變礦化階段及控礦要素張運強,李勝榮,陳海燕,薛建玲,孫文燕,張旭ZHANGYun—qiang,LISheng—rong,CHENHal—yan,XUEJian—Zing,SUNWen—yan,ZHANGXu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.北京100083StateKeyLaboratoryofGeologicolProcessandMineralResources~ChinaUniversit
2、yofGeosciences,Beijing100083,China摘要:照島山金礦位于膠東牟平一乳山成礦帶北段,礦體產(chǎn)于中生代燕山期昆崳山二長花崗巖中,主要受NNE向金牛山斷裂帶的控制。對金的成礦背景、礦床地質(zhì)、控礦因素和礦體隱伏特征的研究結(jié)果表明:圍巖蝕變從近礦到遠(yuǎn)礦依次發(fā)育黃鐵絹英巖化、絹英巖化和鉀長石化;金的成礦分為黃鐵礦石英、石英黃鐵礦、多金屬硫化物、石英碳酸鹽礦物4個階段:昆崳山巖體和荊山群變質(zhì)巖的接觸帶附近易于成礦;金牛山主斷裂走向NE的拐折地段、不同期次斷裂交會處和多期斷裂破碎帶部位都易于成礦;金品位高值區(qū)呈近似等距分布,32線以南有向
3、SW側(cè)伏的趨勢,40線以北有向NE側(cè)伏的趨勢??偨Y(jié)了照島山金礦的控礦因素。初步推測了深部找礦方向關(guān)鍵詞:金礦;熱液蝕變;成礦階段;控礦因素;膠東照島山中圖分類號:P618.41;P614文獻標(biāo)志碼:A文章編號:1671—2552(2010)06—0933—12ZhangYQ,LiSR,ChenHY,XueJL,SunWY,ZhangX.Identifyingofalterationmineralizationphaseandanalysisonore—controllingfactorsofZhaodaoshangolddeposit,Muping,e
4、asternShandong,China.GeologicalBulletinofChina,2010,29(6):933—944Abstract:TheZhaodaoshangolddeposit,locatedinthenorthoftheMuping—Rushanore~formingbelt,OCCU~inMesozoicKun—yushanmonzoniticgranite.OrebodiesarecontroUedbytheJinniushantectoniczonesofNNEstrikingfaultsResultsofthemetal
5、lo—geniebackground,oregeology,ore—controllingfactorandthecharacteristicsofconcealedorebodyshowthatalterationsofwallrockfromproximaltOdistalarepyfitizationsilicification—sericitization,silicification—sericitizationandpotash—alteration.ItisconcludedthatthemineralizingprocessesofZh
6、aodaoshangolddepositcanbedividedintofourstages:pyrite—quartzstage,qua~z—pyritestage,poly—metallicmineralsstageandqua~z—cabonatestage.TheorebodiesoccurincontactzonebetweenKunyushangramteandArchen—LowerproterozoicJingshanGroupmetamorphicrock,andoccurinthelocationofNEstrikingfaults
7、,atthecuttingpointofdiferentfaultsandinthetectonicfracturezones.Thegoldenrichmentlocalitiesdistributeinaccordancetoallapproximateequidistantrole.ThegoldorebodiesinchnetotheSWdirectioninthesouthofNo.32explorationlineandtOtheNEdirectioninthenoahofNo.40ex-plorationline.Thearticlesu
8、msuptheore—controllingfactorsandpointsoutoreexp