简介：微隧道通常在0.3nm的范围与孔指矿物质的结构的隧道到2.0跑。如此的微隧道包括，K在cryptomelane充满的Mn-O八面体隧道，和Si-O和Al-0四角形的分子的筛构造的隧道在沸石由Na和Ca充满了，并且有效地有分子的筛的功能。这里，我们指出自然矿物质的ultra-microchannels与离子的筛的特征在0.3nm下面有孔。矿物质长石的ultra-microchannels，为地球的半团的财务“scrust，因为孔是太小的，大部分被忽略了。在这个工作，我们在场那长石显示离子交换的某个度并且在高、低的温度下面拥有隧道结构的一个特征。在高温度，Na~+能进入长石的隧道。在直到15.9%的长石增加的Na_-O的Thecontent。在中间的温度，Pb~(2+)能也作为离子交换的结果进入长石的隧道，这样带到形成ofPb长石。在房间温度，大约97.94%Cd~(2+)能被移开，Cd长石能被获得。这些现象显示长石的ultra-microchannels的典型效果，它可以为重金属污染和原子废物的处理作为一个潜力被建议。自然矿物质的Theultra-microchannels在移植和交换ofgeomaterials起了特殊作用。一些自然矿物质的微隧道的分子的筛有净化分子的煤气的污染的性质。并且很自然的矿物质的ultra-microchannels的离子的筛能净化离子的水污染。

简介：ThispaperpresentsthefirstspecificstudyoftheTh-andU-bearingminerals,whichwererecentlyfoundintheSEMediterraneanmarginofSpain(ElHoyazoarea,Almeriaprovince).ThesemineralsareREEphosphates(mainlymonazite)whichoccurasamoeboidal-to-elongateinclusions,fromaround10120μmto120μm,hostedinsinglegarnetcrystalsfromdacitelavasandmetamorphicrocksfromtheElHoyazoVolcanicComplex.ThandUcontentsarehigherthan1wt%,with3.04to5.62wt%forTh02,and0.7to1.75wt%forUO2.Bothelementsarealsofoundinxenotime(ThO2:0.24,UO2:0.27wt%).Giventhattheerosionofthevolcanicsourcerockshasgenerateda“placer-type”depositofmonazitesandsandthatgarnets(maincarriersofmonazite)arebeingcommercialised,anenvironmentalmonitoringandmanagementplanshouldbeurgentlyexecutedinthearea.

简介：Tungstenminerals(scheeliteandwolframite)fromtwogenetictypesofgranitoidsshowsignificantdif-ferencesinREEdistribution,probablyduetodifferentmaterialsourcesandorigins.Tungstenminer-alsingraniteporphyryofthecrust-mantlesourcearerelativelyhighin∑REE(1884ppmonaverage).∑Ceisrichrelativeto∑Yand∑Ce/∑Yisrelativelyhigh(>1).Thechondrite-normalizedREEdistributionpatternsarecharacterizedbyagroupofrightward-inclinedcurves.Tungstenmineralsinquartzveinsintrudingthegranitesofcrustoriginhavelower∑REE(335ppmonaverage).∑Yisrichrelativeto∑Ceand∑Ce/∑Yisrelativelylow(<1).Thechondrite-normalizedREEdistributionpatternsarecharacterizedbyagroupofleftward-inclinedcurves.SotheREEdistributionpatternscanbeusedtodiscriminatethesourcesofrock-andore-formingmaterialsandthegenetictypesofWdepositssoastoprovidecluestooreprospecting.

简介：克莱矿物质能在土壤和含水土层妨碍各种各样的沾染物的运输，但是泥土矿物质怎么在含水土层影响nanoparticles的运输，没深入地被调查。在这份报纸，表面活化剂的运输在明确的石英沙驱散多围的碳nanotubes(MWCNT)，有改变离子的力量的石英沙和泥土矿物质(kaolinite和montmorillonite)的混合物被学习。钠dodecylbenzenesulfonate(SDBS)和MWCNT暂停能容易通过石英沙移植的octyl-phenol-ethoxylate(TX100)，而是在石英沙罐头的不到2%w/w泥土矿物质的存在显著地妨碍MWCNT暂停的运输，特别在高离子力量(0.6公里CaCl2)。为在多孔的媒介的分散表面活化剂的MWCNT的泥土矿物质的抑制机制是MWCNT的拦截。因为更多的kaolinite能在石英沙被保留，Kaolinite比montmorillonite为MWCNT运输有更强壮的抑制效果。由泥土矿物质的表面活化剂的吸附不显著地影响MWCNT的运输。这发现为对在土壤和含水土层的MWCNT运输风险的环境评价是重要的。

简介：Dryseparationofironmineralfromlow-gradecoal-serieskaolininHubeiProvinceofChinawasinvestigated.ThestructureandchemicalcompositionofthekaolinoreweredeterminedbyX-raydiffraction（XRD）andX-rayFluorescence（XRF）analyses.Thenarrowparticlesizerangeclassification,drymagneticseparationandcalcinationwerecarriedouttoevaluatetheparticlesizedistribution,andtherelationbetweenthecontentofironandthewhiteness.Experimentalresultsrevealedthatthehighestcontentofiron（3.70%）inkaolinorewasintheparticlesizerangefrom60to74μm,andpyritewasthemainoccurrenceofironinthekaolinore.Drymagneticseparationshowedthattheremovalrateofironinkaolinorecouldbeincreasedobviouslyaftercalcination,andtherateofironremovalwas60%intheparticlesizerangefrom60to74μm.Aspyritecanbetransformedintohematitethroughcalcination,thermodynamicstudiesandXRDanalysisshowedthatthemaximumcontentofhematitewasobtainedat900℃,whichwouldbemorebeneficialtomagneticseparation.

简介：Thecomposition,assemblageanddistributioncharacteristicsofheavymineralsfrom63to125μmgrainsizesinsurfacesedimentfromtheXinghuaBay(17stations)arestudied.Themattersourceofsiltandtherelationshipbetweenheavymineralsandsedimentaryenvironmentarealsodiscussed.Theresultsshowthatthereare37kindsofheavymineralsandtheaveragecontentofthemis12.08%,whichexceeds6%comparedwiththeMeizhouBay(5.67%).Thedominantmineralsaremagnetite,hornblende,epidote,ilmenite,hematite,limonite,zirconandsoon.MineralkindsrevealthatthesourcesofsiltinthisbayarethefluvialinputanderodedproductsofbedrockincircumjacentlandandislandsoftheXinghuaBay.However,themattersourcefromoutsidethisbayisless.FourmineralassemblagezonescanbedividedbasedonheavymineralcontentsanddistributioncharacteristicsintheXinghuaBay,whicharenotonlyinfluencedbymattersource,butalsocontrolledbyhydrodynamicconditionandsedimentaryenvironmentintheXinghuaBay.

简介：Inthispapertheseven-stepcontinuousextractingmethodwasemployedinthestudyofchemicalformsofthesixheavymetalsCo,Zn,Pb,Cu,CrandMn,Theresultshowsthattheetalsinthelateritearepresentinthechemicalformofcrystallineironoxidesandresidues,andtheyaretransformedtowaredorganicandexchangeableformsinthesurfacesoil.Linearregressionanalysisindicatesthattheaboveheavymetalshaveapositivecorrelationwiththecrystallineironoxideminerals.Thecrystallineironoxidemineralshaveaveryimportantroletoplayintheenrichmentofheavymetals,especiallythesolidcomponentsinthelaterite.

简介：

简介：

简介：Chinahaslongbeenrecognisedasanimportantsourceofrefractoryrawmaterialsforrefractorymarketsworldwide.Bauxite,magnesia,fusedalumina,andrefractoryclaysinparticular,havemaintainedChina'sstrongpositionastheworld'sleadingsupplieroftheseminerals.However,importantchangeshavetakenplaceirthestructureofChineseandglobalsupplyoftheseminerals.Moreover,theworldrefractorymarketandthemineralstradingsectorhavealsoundergonearadicaltransformationthathasinfluencedmineralsupply,andshiftedendproductmanufacturetoChina.ThispaperhighlightsthesechangesandseeshowtheyhaveimpactedonChinaasaworldsourceofrefractoryminerals.

简介：Inorganic-richgasshales,claymineralsandorganicmatter(OM)havesignificantinfluencesontheorigin,preservation,andproductionofshalegas.Becauseofthesubstantialroleofnanoscaleporesinthegeneration,storage,andseepageofshalegas,weexaminedtheeffectsofclaymineralsandOMonnanoscaleporedistributioncharacteristicsinLowerPaleozoicshalegasreservoirs.UsingtheNiutitangandLongmaxishalesasexamples,wedeterminedtheeffectsofclaymineralsandOMonporesthroughsedimentationexperiments.Fieldemission–scanningelectronmicroscopycombinedwithlow-pressureN2adsorptionofthesamplesbeforeandaftersedimentationshowedsignificantdifferencesinporelocationandporesizedistributionbetweentheNiutitangandLongmaxishales.NanoscaleporesmostlyexistedinOMintheLongmaxishaleandinclaymineralsorOM–claycompositesintheNiutitangshale.Thedistributiondifferenceswereattributedlargelytovariabilityinthermalevolutionandtectonicdevelopmentandmightaccountforthedifferenceingas-bearingcapacitybetweentheNiutitangandLongmaxireservoirs.Inthenanoscalerange,mesoporesaccountedfor61–76%oftotalnanoscaleporevolume.ConsiderablydevelopednanoscaleporesinOMweredistributedinabroadsizerangeintheLongmaxishale,whichledtogoodporeconnectivityandgasproduction.Numerousnarrowpores(i.e.,pores\20nm)inOM–claycompositeswerefoundintheNiutitangshale,andmightaccountforthisshale’spoorporeconnectivityandlowgasproductionefficiency.Enhancingtheconnectivityofthemesopores(especiallypores\20nmandthosedevelopedinOM–claycomposites)mightbethekeytoimprovingdevelopmentoftheNiutitangshale.ThefindingsprovidenewinsightintotheformationandevolutionarymechanismofnanoscaleporesdevelopedinOMandclayminerals.

简介：ApotassiumsolubilizingbacterialstraindesignatedEGT,whichistolerantofhightemperature,wasisolatedfromanearthworm’sguttoobtainabacteriumthatcanweatherpotassium-bearingrockeffectivelythroughsolid-statefermentation.Molecularphylogenyand16SrRNAgenesequenceanalysisdemonstratedthebacterialstrainwasamemberoftheStreptomycesgenus.Toassessitspotentialtoreleasepotassiumfromsilicateminerals,thisstrainwasusedtodegradepotassium-bearingrockpowderbysolid-statefermentation.Afterfermentation,theamountofwater-solubleAl,FeandKofthesubstratewithactiveinoculumwashigherthanthoseofthecontrol,whichhadautoclavedinoculum,andthoseofthefreshsubstrate.Theresultindicatedthatthestrainhadtheabilitytoweatherpotassium-bearingrockandcouldbeusedasaninoculumintheproductionofpotassiumbio-fertilizer,duetoitspotassiumreleaseactivityfromrockandtolerancetohightemperature.

简介：为在Xikuangshan锑矿的矿水质量负责的矿物质被一个帮助计算机的热力学的化学平衡模型识别并且描绘。30件样品的一个总数为主要阳离子和阴离子镇定、分析。Eh-pH图识别了Fe2是的O3主导的铁种类当42-因此是主导的硫化物种类时，它显示酸生产。经历氧化的主要酸的生产矿物质被识别是黄铁矿，磁黄铁矿，毒砂和陨铁。贡献了因此在地下水的42-集中是石膏和舍利盐的另外的第二等的硫化物矿物质。方解石和白云石是主要缓冲碳酸盐矿物质。生产并且消费矿物质的特定的酸的鉴定发生在矿区域是批评的决定一个有效的水管理计划。

简介：Hydrocarbonmicro-seepagecancauseoxidationreductionreactionsandproducealteredmineralsinsurfacesedimentsandsoil.Thetypicalalteredmineralsmappingbytheirdiagnosticspectralfeaturesonhyper-spectralimagesisanimportanttoolforthepetroleumexplorationindustry.Inthisstudy,theairbornehyper-spectraldatawereusedtoinvestigatethealteredmineralsinducedbyhydrocarbonmicro-seepagesbyspectralfeaturefitting(SFF)intheloesscoverageareaofXifengOilfield.Theresultsrevealthatthedistributionregionofthealteredmineralsinducedbyhydrocarbonmicro-seepageislargerthantheknownoilfieldexplorationarea.Thepotentialhydrocarbonmicro-seepageregionwasalsorevealedbythedistributionofalteredmineralsbesidestheknownhydrocarbonarea.Afastindexwasproposedbytheabsorptiondepthsofclayandcarbonatemineralsforassessmentofhydrocarbonmicroseepage.Anditgavemuchclearerboundariesforthehydrocarbonmicro-seepageintheloesscoverageareathanthosebythealteredmineralmapping.Inaddition,somefieldsampleswereanalyzedbyX-raydiffraction(XRD)andatomicabsorptionspectrophotometertovalidatetheresults.Withintheextentsofhydrocarbonmicro-seepage,therearelowercontentsofferricironandhighercontentsofcarbonatemineralsinthesesamples.Therefore,itissatisfactorytohavetheairbornehyper-spectraldatatooutlinetheextentsofhydrocarbonmicro-seepageforfurtherhydrocarbonexplorationintheloesscoveragearea.

简介：TheadsorptionkineticsofPb^2+ondifferentsoilsandmineralswithvariablechargeswasstudiedbythetwoion-selectiveelectrodetechniqueatdifferentpHandconcentrations.Theresultsshowedthatmorethan95%ofadsorptiononallthesamplesoccurredduringthefirst5minutes.Alladsorptiontime-dependentdatacouldfitthesurfacesecond-orderequationverywell.ThevaluesofXmweregoethite>kaolinite,andlatosol>redsoilatthesameinitialreactionconcentration.Thevaluesofkwerekaolinite>>goethite,andlatosol>redsoilatthesamereactionpHandinitialconcentration.ThehigherthesuspensionpH,thefastertheadsorptionoccurred.ThemeaningofXmgotbythetwoion-selectiveelectrodetechnique(onekindofbatchtechnique)wasdifferentfromthatbythemiscibledisplacementtechniqueinthattheformerwasonlytheequilibriumadsorptionamountatadefiniteconcentrationandpH,butthelatterwasalmostequaltotheadsorptioncapacityatadefinitepHwithmuchlessinfluenceofconcentration.OnePb^2+wassupposedtooccupytwoadsorptionsitesastheadsorptionmechanismisconcerned.