胶东牟平照岛山金矿蚀变矿化阶段及控矿要素.pdf

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1、第29卷第6期地质通报Vo1．29．NO．62010年6月GEoLoGICALBULLETINOFCHINAJun．，2010胶东牟平照岛山金矿蚀变矿化阶段及控矿要素张运强，李胜荣，陈海燕，薛建玲，孙文燕，张旭ZHANGYun—qiang，LISheng—rong，CHENHal—yan，XUEJian—Zing，SUNWen—yan，ZHANGXu中国地质大学／地质过程与矿产资源国家重点实验室．北京100083StateKeyLaboratoryofGeologicolProcessandMineralResources~ChinaUniversit

2、yofGeosciences，Beijing100083，China摘要：照岛山金矿位于胶东牟平一乳山成矿带北段，矿体产于中生代燕山期昆嵛山二长花岗岩中，主要受NNE向金牛山断裂带的控制。对金的成矿背景、矿床地质、控矿因素和矿体隐伏特征的研究结果表明：围岩蚀变从近矿到远矿依次发育黄铁绢英岩化、绢英岩化和钾长石化；金的成矿分为黄铁矿石英、石英黄铁矿、多金属硫化物、石英碳酸盐矿物4个阶段：昆嵛山岩体和荆山群变质岩的接触带附近易于成矿；金牛山主断裂走向NE的拐折地段、不同期次断裂交会处和多期断裂破碎带部位都易于成矿；金品位高值区呈近似等距分布，32线以南有向

3、SW侧伏的趋势，40线以北有向NE侧伏的趋势。总结了照岛山金矿的控矿因素。初步推测了深部找矿方向关键词：金矿；热液蚀变；成矿阶段；控矿因素；胶东照岛山中图分类号：P618．41；P614文献标志码：A文章编号：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