Talc Mineral | Physical - Optical Properties, Occurrence, Uses

It is a metamorphic mineral found in veins and magnesium-rich rocks. It is often associated with serpentine, tremolite and forsterite and occurs as an ... HomeGeneralRocksIgneousRocksExtrusiveIgneousRocksIntrusiveIgneousRocksMetamorphicRocksFoliatedMetamorphicRocksIgneousRocksSedimentaryRocksMetamorphicrockMineralsCarbonatesMineralsHalideMineraloidNativeMineralOrganicMineralsPhysicalPropertiesOpticalPropertiesBranchesDisasterEarthGeologicTimeScaleEarthInteriorPlateTectonicsGalleryQuestionsSearchContactPrivacyPolicySigninWelcome!LogintoyouraccountyourusernameyourpasswordForgotyourpassword?GethelpPrivacyPolicyPasswordrecoveryRecoveryourpasswordyouremailApasswordwillbee-mailedtoyou.GeologyScienceHomeGeneralFaultandTypesofFaultsWeatheringTypesBowen’sReactionSeriesTheRockCycleStratigraphyRocksCoalSoapstoneVolcanicBombAgglomerateTuffAllIgneousRocksExtrusiveIgneousRocksIntrusiveIgneousRocksMetamorphicRocksFoliatedMetamorphicRocksIgneousRocksSedimentaryRocksMetamorphicrockMineralsCoalAmberAragonitePearlCoralAllCarbonatesMineralsHalideMineraloidNativeMineralOrganicMineralsPhysicalPropertiesOpticalPropertiesBranchesDisasterEarthGeologicTimeScaleEarthInteriorPlateTectonicsGalleryQuestionsHomeMineralsTalcMineralsSilicatesMineralsShareFacebookTwitterPinterestWhatsAppLinkedinEmailTumblrTelegramVKAmericanEducationalTalcSteatiteSoapstoneMineral,RopesGoldmine,MarquetteCo.,Michigan,UnitedTalciseasilydistinguishablebyitsextremesoftness,coloriswhite,colorless,paletodarkgreen,oryellowishtobrown.Crystalsarerare;itismostcommonlyfoundinfoliated,fibrous,ormassiveaggregates.Itisoftenfoundmixedwithotherminerals,suchasserpentineandcalcite.Dense,high-puritytalciscalledsteatite.Itisametamorphicmineralfoundinveinsandmagnesium-richrocks.Itisoftenassociatedwithserpentine,tremoliteandforsteriteandoccursasanalterationproductofsilica-poorigneousrocks.Talciswidespreadandisfoundinmostareasoftheworldwherelow-grademetamorphismoccurs.Thenamesoapstoneisgiventocompactmassesoftalcandothermineralsduetotheirsoapyorgreasyfeel.Association:Actinolite,tremolite,chlorite,pyroxene,vermiculite,serpentine,anthophyllite,dolomite,calcite.ChemicalPropertiesChemicalClassificationSilicatemineralChemicalCompositionMg3Si4O10(OH)2PhysicalPropertiesofTalcColorWhite,beige,gray,yellow,brown, pink,purple,blue,green.Rarelycolorless.StreakWhiteLusterGreasy,waxy,pearlyDiaphaneityTranslucentMohsHardness1SpecificGravity2.7to2.8DiagnosticPropertiesFeel,color,softness,cleavageCrystalSystemTriclinicormonoclinic.TenacitySectileFractureFibrous,MicaceousDensity2.58–2.83g/cm3(Measured)   2.78g/cm3(Calculated)OpticalPropertiesofTalcCleavagePerfect on{001}Color/PleochroismWeakindarkvarietiesOpticSignBiaxial(-)Birefringenceδ=0.051ReliefModerateOccurrenceIntalc-richschistsorsteatitethrough hydrothermalalterationofma¯crocks(steatitization)subsequentto serpentinizationduringgreenschistfaciesmetamorphism.Alsoformedbythermal low-temperaturemetamorphismofsiliceousdolostones.TalcUsesTalchasmanyuses.Inthemakingofpaper,paint,plastic,electrik,food,medicine,cosmeticsandceramicsDuetoitsresistancetoheat,electricityandacids,itisusedonlaboratorytabletopsurfacesandsurfacesofpowerplants.Talcisusedascosmetic(talcumpowder),asalubricantandasafillerinpaperproduction.Itisusedtocovertheinnerpartsoftheinnertubesandrubberglovesduringproductiontopreventthesurfacesfromsticking.Inmedicine,talcisusedasapleurodesisagenttopreventrecurrentpleuraleffusionorpneumothorax.IntheEuropeanUnion,thecontributionnumberisE553b.Thetalccanbeusedasapolishingagentinthepolishingstageinthewhitericeprocess.Itiswidelyusedintheceramicindustrybothinthebodyandinthesecrets.Low-fireartworkgiveswhitenesstoitsbodiesandincreasesthermalexpansionagainstcrushing.DistributionOfwidespreadoccurrence.Somelocalitiesforgoodcrystalsorpurematerialinclude:onMt.Greiner,Zillertal,Tirol,Austria.AtZermatt,Valais,andSt.Gotthard,Ticino,Switzerland.FromthePtschtal,Trentino-AltoAdige,Italy.AttheTrimounstalcdeposit,sixkmnortheastofLuzenac,Ariµege,France.FromGoepfersgruen,Bavaria,Germany.AtSnarum,Norway.IntheOnotoskdeposit,Irkutsk,Siberia,Russia.IntheUSA,nearFowler,St.LawrenceCo.,NewYork;Delta,YorkCo.,Pennsylvania;Smitheld,ProvidenceCo.,RhodeIsland;Rochester,WindsorCo.,Vermont;HollySprings,CherokeeCo.,Georgia;nearSanAndreas,CalaverasCo.,California.ReferencesBonewitz,R.(2012).Rocksandminerals.2nded.London:DKPublishing.Handbookofmineralogy.org.(2019).HandbookofMineralogy.[online]Availableat:http://www.handbookofmineralogy.org[Accessed4Mar.2019].Mindat.org.(2019).Talc:Mineralinformation,dataandlocalities..[online]Availableat:https://www.mindat.org/min-727.html[Accessed4Mar.2019].QUESTIONSMARK?Whoarethefamousgeologistsinhistory?TheEarth’sLayersWhowasGeorgiusAgricola?TableofContentsChemicalPropertiesPhysicalPropertiesofTalcOpticalPropertiesofTalcOccurrenceTalcUsesDistributionReferencesAPAMLAHarvardVancouverChicagoIEEEGeologyScience(15July2022)Talc.Retrievedfromhttps://geologyscience.com/minerals/talc/."Talc."GeologyScience-15July2022,https://geologyscience.com/minerals/talc/GeologyScience5March2019Talc.,viewed15July2022,GeologyScience-Talc.[Internet].[Accessed15July2022].Availablefrom:https://geologyscience.com/minerals/talc/"Talc."GeologyScience-Accessed15July2022.https://geologyscience.com/minerals/talc/"Talc."GeologyScience[Online].Available:https://geologyscience.com/minerals/talc/.[Accessed:15July2022]ContactPrivacyPolicy©Copyright©2018Allrightsreserved.Gotomobileversion