資源描述:
《西秦嶺鏵廠溝地區(qū)金礦床成礦規(guī)律研究.pdf》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、第34卷第3期西安科技大學(xué)學(xué)報(bào)Vo1.34No.32014年05月JOURNALOFXI’ANUNIVERSI1YOFSCIENCEANDTECHNOLOGYMay.2014文章編號(hào):1672—9315(2014)03—0331—06西秦嶺鏵廠溝地區(qū)金礦床成礦規(guī)律研究許尋會(huì),王海崗(陜西省核工業(yè)地質(zhì)調(diào)查院,陜西西安710054)摘要:鏵廠溝金礦床是近年來在西秦嶺地區(qū)金礦的新突破,位于秦嶺山脈西部之南麓,地勢(shì)形態(tài)受侵蝕、剝蝕作用形成的低一中山地貌類型,地形切割中等,地勢(shì)西高東低,金礦床產(chǎn)于中下泥盆統(tǒng)三河口群地層,通過對(duì)礦體形態(tài)、規(guī)模、厚度、品位、石英脈發(fā)育程度的研究,認(rèn)為該礦床受構(gòu)造作用的強(qiáng)
2、度制約,就礦體的賦存特征來看,礦體既受層控,又嚴(yán)格受構(gòu)造(蝕變)帶控制,賦礦巖石為碎裂蝕變碳酸鹽巖,黃鐵礦化、硅化蝕變較強(qiáng),并與金礦(化)體關(guān)系最為密切,礦石中金品位高、低與蝕變強(qiáng)度密切相關(guān)。根據(jù)賦存特征將金礦化蝕變帶分兩大類:一是構(gòu)造蝕變巖型、二是蝕變細(xì)碧巖型。該礦床根據(jù)研究區(qū)內(nèi)所施工的槽、坑、鉆探控礦情況看,不論是在地表或深部,對(duì)所控礦體都未圈邊,據(jù)此預(yù)測(cè)本礦區(qū)深部及外圍(礦體向東、向西)仍還有較大的找礦遠(yuǎn)景。關(guān)鍵詞:找礦前景分析;礦床成因;金礦床;鏵廠溝;西秦嶺中圖分類號(hào):TD863文獻(xiàn)標(biāo)志碼:AResearchonmetallogenicregularityinHuachanggo
3、ugolddepositsofWestQinlingMountainsXUXun—hui,WANGHai—gang(ShcumxiProvinceNuclearIndustryGeologicalSurvey,Xi’an710054,China)Abstract:HuachanggougolddepositisanewbreakthroughforgoldprospectinginrecentyearsintheWestQinlingregion.MiningareaislocatedinthesouthofwestQinlingMountains,theterraincharacter-
4、isticsisformedbytheerosion,erosionoflow—zhongshanlandscapetypes,topographyandcuttingmedi—um,terrainishighinwestandlowineast,golddepositintheLowerDevonianestuaryGroupstrata,orebodyshape,size,thickness,gradequa~zveinsdegreeofdevelopmentofthedepositbythetectonicstrengthconstraints.Regardingtheexistin
5、gfeaturesoftheorebody,orebodyiswellreceivedbylayercontrol,andstrictlycontrolledbythestructure(alteration)control,hostrocksfragmentationalteredcar-bonate,pyrite,silicificationstrongalterationandgoldmine(of)thebodyismostcloselyrelated,highgradegoldinores,iscloselyrelatedtothestrengthofthelowandalter
6、ation.Accordingtooccurencecharacteristics,goldmineralizationalterationzonedividedintotwocategories:first,thealteredrocktype,thesecondisalteredspilitetype.Thedepositaccordingtothestudyareaconstructiontank,pit,drilling,ore—controlling,whetheronthesurfaceordeep,noneoftheallegedorebodycircleedge,topre
7、—dicttheminedeepandperipheral(orebodyeast,west)isstillofalargeprospecting.Keywords:prospectingpotential;genesis;golddeposits;Huachanggou;WestQinlingMountain收稿日期:2013—10一l1基金項(xiàng)目:國(guó)家自然科學(xué)重點(diǎn)基金(41330315)通訊作者:許尋會(huì)(1963一),