Corundum mindatTourmaline mindatTurquoise mindatHornblende mindatGraphite mindatTalc-free setting powderTalc - Minerals Education Coalition
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The term talc refers both to the pure mineral and a wide variety of soft, talc-containing rocks that are mined and utilized for a variety of applications. Talc ... Skiptocontent ReturntoMineralsDatabase Talc Thetermtalcrefersbothtothepuremineralandawidevarietyofsoft,talc-containingrocksthatareminedandutilizedforavarietyofapplications.Talcformsmica-likeflakes.TalcisthesoftestmineralontheMohshardnessscaleat1andcanbeeasilycutandcrushed.Talchasperfectcleavageinonedirection.Thismeansthatitbreaksintothinsheets.Asaresult,itfeelsgreasytothetouch(whichiswhytalcisusedasalubricant). Type Mineral MineralClassification Silicate ChemicalFormula Mg3Si4O10(OH)2 Streak White,pearlblack MohsHardness 1 CrystalSystem monoclinic,triclinic Color White,brown,gray,greenish Luster Pearly Fracture uneven Description Thetermtalcrefersbothtothepuremineralandawidevarietyofsoft,talc-containingrocksthatareminedandutilizedforavarietyofapplications.Talcformsmica-likeflakes.TalcisthesoftestmineralontheMohshardnessscaleat1andcanbeeasilycutandcrushed.Talchasperfectcleavageinonedirection.Thismeansthatitbreaksintothinsheets.Asaresult,itfeelsgreasytothetouch(whichiswhytalcisusedasalubricant). RelationtoMining OpenPitMining: Mosttalcisminedtodaybyconventionalopen-pit,drill-and-blast,shovel-and-trucktechniques.Themajordifferencefromconventionaltechnologyisthatblastingisminimizedtoreducebreakageofsofttalcore. Uses Groundtalcisusedasaningredientinceramics,paper,paint,roofing,plastics,cosmetics,talcumandbabypowders,andavarietyofotherassortedusessuchasmakingrubberandplastics. Relatedtopics: IndustrialMineralsPoster ClayActivities TalcEducationalResources ReturntoMineralsDatabase MECSpotlight MoveMiningNextGenCompetitionOpensFall2022 MoveMiningNextGenisanonlinecompetitionforstudentsK-12thatexplorestheimportanceofminedmineralstoourdailylives. SponsoredbyNewmont,prizesaregivenforcategoriesincludingBestOverall,BestinGradesK-5,BestinGrades6-8,andBestinGrades9-12. Studentscanusescience,technology,literacyandperformanceskillstosharethe importanceofmineralswithaworldaudience!Watchforsubmissiondatesandcontestdetailsforthe2022-2023contestcomingthisfallatMoveMiningNextGen.org.
延伸文章資訊
- 1Talc: Mineral information, data and localities. - Mindat.org
Talc ; Crystal System: Triclinic ; Member of: Pyrophyllite-Talc Group ; Name: Allegedly named in ...
- 2Talc - Minerals Education Coalition
The term talc refers both to the pure mineral and a wide variety of soft, talc-containing rocks t...
- 3The mineral Talc information and pictures - Minerals.net
Talc is known for being the softest mineral on earth. It is number 1 on the Mohs hardness scale, ...
- 4talc | Definition, Uses, & Facts - Encyclopedia Britannica
talc, common silicate mineral that is distinguished from almost all other minerals by its extreme...
- 5Talc - rocks and minerals - The University of Auckland
Talc is the softest mineral, demonstrated by its position at the bottom of Mohs' Scale of Hardnes...
