简介：<正>1IntroductionLithiumwasusedwidelyinbatteries,lubricants,aluminiumsmelting,ceramics,glass,polymersandotherareasduetoitsuniqueelectrochemicalreactivityaswellasotherproperties(Hykawy,2010).Productionoflithiumcomesfrombothbrineandmineralsources.ThetotalresourcesoflithiumestimatedbytheUSGSin2014areto

简介：<正>Mixingbrinemethod,whichfoundedonthecommonioneffect,iswidelyusedforlow-sodiumcarnalliteproduction.Comparedwithtraditionalcarnallitepreparationtechniques,themixingbrinemethodpossessa

简介：Ti-richgarnetisfoundwithincalciticijolitefromtheOkacarbonatitecomplexinCanada,whichischaracterizedby58%–73%andraditecomponent（2.12wt.%–4.18wt.%TiO2）andclassifiedasmelanite.Thegarnetdisplayscomplexzoningandcontainsabundanthighfieldstrengthelements（HFSEs）andrareearthelements（REEs）.Threegroups（Ⅰ,Ⅱ,Ⅲ）havebeenidentifiedbasedontheirpetrographicnature.ComparedtogroupsⅡandⅢ,GroupⅠgarnetcorescontainhigherTiO2,MgO,HFSE,andREEandlowerSiO2abundances.Thedistinctchemicalandpetrographicsignaturesoftheinvestigatedgarnetscannotbeattributedtosimpleclosedsystemcrystallization,buttheyareconsistentwiththemulti-pulsemagmamixing.CombinedwithpreviouslyreportedU-Pbagesforapatitefromthecalciticijolite,atleastthreestagesofmagmaevolutionandsubsequentmixinghavebeeninvolvedinthegenerationofcalciticijoliteatOka.Theearly-formedmeltthatgeneratedGroupIgarnetcorewaslatermixedwithatleasttwosmall-volume,moreevolvedmelts.Theintermediatestagemeltformedtheremaininggarnetalongwithsomepyroxene,calcite,nepheline,andapatiteat127±3.6Ma.Theyoungest,mostevolvedmeltgeneratedthemajorityofpyroxene,calcite,nepheline,andapatitewithinthecalciticijoliteat115±3.1Ma.