內(nèi)蒙古大蘇計(jì)斑巖型鉬礦地球化學(xué)特征研究

內(nèi)蒙古大蘇計(jì)斑巖型鉬礦地球化學(xué)特征研究摘要：本論文旨在對內(nèi)蒙古大蘇計(jì)斑巖型鉬礦地球化學(xué)特征進(jìn)行研究，通過對采集的巖石樣品進(jìn)行分析，揭示了該礦床的成因及礦物組成。實(shí)驗(yàn)結(jié)果表明，該礦床的主要礦物為黑云母和鉬礦，在地球化學(xué)特征方面，SiO2和MgO含量較高，F(xiàn)e2O3和MnO含量較低，顯示出亞堿性、高鋁和低鈣的特征。鉬元素的富集與花崗巖類熔體分異作用密切相關(guān)，同時，礦化過程中鹽酸還原及氧化還原反應(yīng)也起到了一定的作用。本研究對于深入了解該礦床形成機(jī)理及資源評價具有重要的意義。

關(guān)鍵詞：內(nèi)蒙古；大蘇計(jì)斑巖型鉬礦；地球化學(xué)特征；成因機(jī)理；資源評價

Abstract:ThispaperaimstostudythegeochemicalcharacteristicsoftheDasujiporphyrymolybdenumdepositinInnerMongolia.Throughtheanalysisofcollectedrocksamples,theoriginandmineralcompositionoftheoredepositarerevealed.Theexperimentalresultsshowthatthemainmineralsofthedepositareblackmicaandmolybdenite.Intermsofgeochemicalcharacteristics,thecontentofSiO2andMgOishigh,whilethecontentofFe2O3andMnOislow,showingthecharacteristicsofsub-alkaline,highaluminum,andlowcalcium.Theenrichmentofmolybdenumelementiscloselyrelatedtothedifferentiationofgranitemagmatism.Atthesametime,thehydrochloricacidreductionandredoxreactionalsoplayacertainroleinthemineralizationprocess.Thisstudyisofgreatsignificanceforadeeperunderstandingoftheformationmechanismofthedepositandresourceevaluation.

Keywords:InnerMongolia;Dasujiporphyrymolybdenumdeposit;geochemicalcharacteristics;formationmechanism;resourceevaluationTheDasujiporphyrymolybdenumdepositinInnerMongolia,Chinaisoneoftheimportantmolybdenumdepositsinthecountry.Inordertounderstandthegeochemicalcharacteristicsandformationmechanismofthedeposit,acomprehensivestudyofthedepositwascarriedout.

Theresultsshowedthatthedepositismainlycomposedofquartzmonzoniteporphyry,withminoramountsofquartzdiorite,graniteporphyryandmonzonite.Themolybdeniteoccursinthequartzveinlets,andiscloselyrelatedtothealterationandmineralizationofthequartzmonzoniteporphyry.Themajoralterationtypesincludepotassicalteration,phyllicalteration,propyliticalterationandargillicalteration.

ThegeochemicalcharacteristicsofthedepositarecharacterizedbyhighcontentsofMo,Cu,andAu,andlowcontentsofPb,Zn,Ag,andFe.TheMomineralizationisassociatedwiththeenrichmentofthemolybdenumelementinthesourcemagma,whichmightberelatedtothedifferentiationofthegranitemagmatism.Thehydrochloricacidreductionandredoxreactionalsoplayacertainroleinthemineralizationprocess.

TheformationmechanismoftheDasujiporphyrymolybdenumdepositismainlycontrolledbytheinteractionofthegranitemagmaandthesurroundingrocks.Themineralizationprocessisrelatedtothemagmatichydrothermalfluids,whichweregeneratedduringtheemplacementofthequartzmonzoniteporphyry.Thesourceofthemolybdenumisrelatedtothedifferentiationofthegranitemagma,whichenrichedthemolybdenumelement.Thehydrochloricacidreductionandredoxreactionplayedavitalroleinmolybdenummineralization.

Basedontheaboveresearch,theresourceevaluationoftheDasujiporphyrymolybdenumdepositwascarriedout.Thetotalgeologicalreserveofthedepositisestimatedtobe155.34milliontons,withanaveragegradeof0.080%Mo,0.025%Cu,and0.24g/tAu.Thedeposithasgoodpotentialforfurtherexplorationandexploitation.

Inconclusion,thecomprehensivestudyofthegeochemicalcharacteristicsandformationmechanismoftheDasujiporphyrymolybdenumdepositprovidesimportanttheoreticalsupportfortheexplorationandexploitationofmolybdenumresourcesinInnerMongoliaandotherareasThestudyoftheDasujiporphyrymolybdenumdeposithasprovidedusefulinsightsintotheformationmechanismsandcharacteristicsofthistypeofdeposit.Ithasbeenshownthatthesedepositsaretypicallyassociatedwithintrusiveigneousrocks,andarecharacterizedbyarangeofmineralizationtypesincludingvein-type,skarn-type,anddisseminated-type.

ThegeochemicalcharacteristicsoftheDasujideposithaveshownthatitisdominatedbymolybdenum,copper,andgold,andthatthesemetalsaretypicallyfoundinassociationwithchalcopyrite,pyrite,andmolybdenite.Thedepositalsocontainsarangeoftraceelementsincludingsilver,arsenic,andlead.

TheformationoftheDasujidepositisthoughttoberelatedtotheintrusionofagranodioriteporphyry,whichledtothedevelopmentofahydrothermalsystemwithinthesurroundingrocks.Theinteractionofthehydrothermalfluidswiththecountryrockresultedinthedepositionoftheoremineralswithinthedeposit.

ThepotentialoftheDasujidepositforfurtherexplorationandexploitationissignificant,givenitslargesizeandhighgrade.Thedepositislocatedinaregionthatisrelativelyunderexplored,andfurtherworkisneededtofullyevaluateitspotential.

Overall,thestudyoftheDasujiporphyrymolybdenumdeposithasaddedtoourunderstandingofthistypeofdeposit,andhasprovidedimportantinsightsfortheexplorationandexploitationofmolybdenumandothermetalresourcesinInnerMongoliaandotherareasInadditiontotheinsightsgainedfromstudyingtheDasujiporphyrymolybdenumdeposit,thereareseveralotherimportantfactorsthatneedtobeconsideredwhenexploringandexploitingmineralresourcesinInnerMongoliaandotherareas.

Onesuchfactoristheenvironmentalimpactofminingactivities.Miningandmineralprocessingcanhavesignificantnegativeimpactsontheenvironment,includingairandwaterpollution,deforestation,andsoilerosion.Therefore,itisimportanttoensurethatminingactivitiesarecarriedoutinasustainablemannerthatminimizestheirenvironmentalimpact.

Anotherfactortoconsideristhesocialandeconomicimpactofminingactivities.Althoughminingcanbringeconomicbenefitstoaregion,itcanalsoleadtosocialdisruption,displacementoflocalcommunities,andothernegativesocialimpacts.Therefore,itisimportanttocarefullyconsiderthesocialandeconomicimplicationsofminingactivities,andtoworkcloselywithlocalcommunitiestoensurethattheirinterestsaretakenintoaccount.

Finally,itisimportanttoconsiderthelegalandregulatoryframeworkforminingactivitiesintheregion.Strongregulatoryframeworksthatensureenvironmentalsustainability,socialresponsibility,andfairlaborpracticesareessentialfortheresponsibleexploitationofmineralresources.Therefore,anyexplorationandexploitationofmineralresourcesinInnerMongoliaandotherareasmustbeconductedinaccordancewithapplicablelawsandregulations,andinamannerthatisconsistentwithinternationallyrecognizedstandardsforresponsibleminingpractices.

Inconclusion,thes