豫西龙门店银矿成矿规律及深部预测.pdf

《豫西龙门店银矿成矿规律及深部预测.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、矿物岩石地球化学通报·研究成果·BulletinofMineralogy．PetrologyandGeochemistryVo1．35No．2，Mar．，2016豫西龙门店银矿成矿规律及深部预测庞绪成，张凯涛，赵少攀，郭跃闪，周阳河南理工大学资源环境学院，河南焦作454000摘要：为探讨豫西龙门店银矿的成矿规律和深部成矿潜力，在分析矿区成矿地质背景和矿床地质特征的基础上，开展了野外地质调查以及包裹体测温。结果发现，龙门店银矿具有断裂构造控矿、矿体等距分布、矿体侧伏明显及围岩蚀变分带等成矿特征，对区内找矿有重要的指示作用。其中的K6矿体化探数据表明，该矿体自上而下的原生晕轴向分带序列为W

2、．Cu．A一Hg’Mo以u’Bi—zn。Ag—Pb—Sb，出现了明显的“前尾晕共存”及“反向分带”现象；结合微量元素地球化学参数垂向变化规律，预测K6矿体深部存在规模较大的盲矿体，在848m标高以下有较大的找矿潜力，设计验证钻孔ZK6—01，预测见矿深度620～640m。关键词：成矿规律；深部预测；原生晕；龙门店银矿；豫西中图分类号：P618．52文章编号：1007．2802(2016)02—0272．07doi：10．3969／j．issl1．10072802．2016．02．006MetallogenicRegularitiesandDeepProspectingoftheLong

3、mendianSilverDepositinWesternHenanProvincePANGXu—cheng，ZHANGKai—tao，ZHAOShao—pan，GUOYue—shan，ZHOUYangInstituteofResourcesandEnvironment，HenanPolytechnicUniversity，Jiaozuo454000，ChinaAbstract：InordertodiscussthemetallogenicregularityanddeepprospectingpotentialoftheLongmendiansilverdepositinwester

4、nHenanProvince，onthebasisofanalyzingmetallogenicgeologicalbackgroundandoregeologicalfeaturesofthedeposit，fieldgeologicalsurvey，microthermometricsurveyoffluidinclusions，andgeochemicalsurveyofthedeposithavebeencarriedoutinthispaper．Resultsshowthatseveralmetallogeniccharacteristics，includingfractur

5、e—controlling，iso—metricdistribution，andobvioussiderakingoforebodies，andwallrockalterationzoning，havebeenobservedintheLong—mendiansilverdeposit．TheyareveryimportantindicativefactorsforthemineralexplorationintheLongmendianarea．Re—suitsofgeochemicalsurveyintheK6orebodyshowthattheprimaryhalozonings

6、equenceoftheindicatorelementsinaxialdirectionfromuptobottomoftheK6orebodyisW—Cu—As-Hg—Mo—Au—Bi—Zn—Ag—Pb—Sb．Thisappearsthatthereareobviousphenomenonoftheco—existenceoffrontalhaloandtailhalo，andthereverseaxialzoning．Combiningwiththevariationregularitiesofgeochemicalparametersoftraceelementsinaxial

7、directionitisconsideredthattherecouldbeaquitelargeblindorebodyindepthbelowtheK6orebody，especially，belowthe848mleve1．AdrillingholeZK6一O1hasbeende—signedtotestifythepredictiveorebodyat620～640mleve1．Keywords：metallogenicregular