简介:<正>Polyhalite(K2SO4·MgSO4·2CaSO4·2H2O)isoneoftheinsolublepotassiummineralwhichiswidelydistributedinsulfate-typepotassium-bearingdeposit,andthetheoreticalconcentrationofK2SO4is28%.Itcanbedirectlyusedasa
简介:共存的作文,比例,和平衡温度在水晶的岩石中二长石对在petrogenesis的岩相学和解释的分类很重要。水晶的岩石通常由4-6矿物质(阶段)组成,取决于他们的独立化学部件和结晶化的平衡温度。一般来说,矿物质阶段的数字能被阶段规则决定。根据集体平衡原则,共存的体积作文二长石如果包含钙,钠,和钾氧化物的共存的mafic矿物质阶段的作文是坚定的,能从岩石的体积化学被评估,例如,由microprobe分析。作文,比例,和温度在平衡罐头二长石同时因此从岩石的体积作文数字地被解决,由合并这篇活动/作文,有团的第三的长石的关系平衡限制。在在这份报纸介绍的数字近似方法之上,长石组上的更好质量的、内部一致的数据能通常被获得,它将被期望在在岩石和创作矿物质的水晶的岩石,以及体积化学的系统的热力学的equilibria的考虑更现实主义、精确。
简介:BasedontheknowinggeochemicalcharacteristicsofwallrockintheMobingolddepositandcompositionoffluidinclusioninore,water-rockexperimentswerecarriedout,importantachievementsareacquiredasfollowing:Goldismainlyderivedfromtheore-bearingwallrock,i,e.,aseriesofepimetamorphicclasticgritstone,sandyslate,andtuffaceousslateintheWuqiangBanxiFormation,WuqiangxiGroup.Inthermalsystemwithmiddle-lowtemperaturechlorinegoldmaybederivedformstablecomplexions,soitisquiteimportantingoldmetallogenicprocess.Sulphurandchlorineperformasthemajornegativeionsthroughoutthegoldactivationandmigrationmovement.Theconcentrationofsulphurandchlorineions,pHvalueandtemperatureareofdecidingsignificanceforgoldactivation,migrationandprecipitation.
简介:一系列线性稳定性分析面对粘性,热传导性和expansivity的空间变化在热传送对流的发作上被执行。我们考虑附加到静电干扰的无穷小的不安的时间的进化(不动)并且在加热basally的平面层的传导性的状态。从在有增加粘性的温度依赖的振幅的流动模式的变化,我们识别了转变进停滞盖(圣)政体,在传送对流在仅仅下面发生的地方一在最高的表面的冷液体厚、停滞盖。详细分析在空间变化在热电导率或expansivity导致的圣政体显示出传送对流房间的方面比率的重要增加:圣传送对流的水平长度规模能被多达50%与深度随热电导率的10次增加扩大。我们进一步开发了成功地复制了在物理性质为给定的空间变化增加圣政体传送对流房间的水平长度规模的机制的圣传送对流的一个分析模型。我们的调查结果可以在披风在传送对流模式上加亮热电导率的空间变化的必要角色。
简介:TheultramaficdikesintheTarimlargeigneousprovince(TarimLIP),exposedintheXiaohaiziareainthenorthwesternTarimBasinofnorthwesternChina,haveporphyritictextures,andtheolivineandclinopyroxeneareasthemajorphenocrystphases.Thegroundmassthereinconsistsofclinopyroxene,plagioclaseandFe-Tioxides,withthecryptocrystallinetexture.TheolivinephenocrystsinonetypicalultramaficdikehaveFo(Mg/(Mg+Fe))numbersrangingfrom73to85,whicharenotinequilibriumwiththeolivine(Mg#of89)fromthehostrockcrystalized.Combinedwithmicroscopeobservation,boththeolivineandclinopyroxenephenocrystsaswellassomeFe-Tioxidesintheultramaficrockareaccountedascumulates.Theliquid(parentalmagma)compositionofSiO2of45.00wt.%–48.82wt.%,MgOof9.93wt.%–18.56wt.%,FeOof5.85wt.%–14.17wt.%,CaOof7.54wt.%–11.52wt.%,Al2O3of8.70wt.%–11.62wt.%andTiO2of0.00wt.%–3.43wt.%intheXiaohaiziultramaficrockwasestimatedbymassbalance,andtheresultsshowareasonableliquidproportioninthecumulate-bearingultramaficdike(ca.45%–60%inthewholerock).Theestimatedparentalmagmacompositioncorrespondstoameltingtemperatureof1300–1550oC,whichisequalorhigherthanthoseofanormalasthenospheremantle,supportingtheinvolvementofamantleplume.Combinedwithotherpreviousstudies,anevolutionmodelfortheformationprocessesoftheXiaohaiziultramaficdikeoftheTarimLIPisproposed.
简介:TheoccurrencesofassociatedelementsandtheirgeneticfactorsintheNo.30coalseamintheZhijinCoalfieldwerestudiedusinginstrumentalneutronactivationanalysis,inductivelycoupledplasma-atomicemissionspectroscopy,andascanningelectronmicroscopeequippedwithanenergy-dispersiveX-rayanalyzer.And,amicroscopephotometersystem(LeitzMPV-Ⅲ)wasusedtoobservethecharacteristicsofcoalpetrology.Accordingtotheinfluencedegreebythesiliceouslow-temperaturehydrothermalfluids,theorganicmatterisdividedintofourtypes:A,B,C,andDofthehydrothermally-alteredorganicmatter(HAOM).ThestudyshowsthatthehighcontentofFe(2.31%)isnotfrompyrite,butmostlyfromthesiliceouslow-temperaturehydrothermalfluids.Theoccurrencesoftheassociatedelementsinthefourorganicmattertypesaredifferent.ThecontentsofFe,Si,andAlaredecreasing,butSandCuareincreasingintheorderoftheHAOM-A,HAOM-B,HAOM-C,andHAOM-D.Thelosingrateofsulfurinorganicmatteris0.35%andthecontentofFetakenfromthelow-temperaturehydrothermalfluidsintotheorganicmatteris0.794%duringthesiliceouslow-temperaturehydrothermalfluidsinvadingthecoalseam.Theabovefactsindicatethatthelow-temperaturehydrothermalfluidsplayacrucialroleinthere-distributionsandoccurrencesofassociatedelementsincoal.