Talc pob zeb nrog cim zog

Ntawm cov minerals yog feem ntau pom zoo li cov khoom yog nyob rau hauv siab thov tsis tsuas nyob rau hauv kev lag luam, tab sis kuj nyob rau hauv cov tshuaj thiab tshuaj pleev ib ce. Cov no muaj xws li ib tug talc. Lub pob zeb no tsis paub raws li ib tug mineral, thiab raws li ib tug hmoov rau cov me nyuam.

Oddly, tab sis nyob rau hauv qhov nws yog tej zaum tus thib ob feem ntau tom qab lub quartz pob zeb. Nws yuav tsum tau muab sau tseg tias talcum - pob zeb xwb nyob rau hauv lub ntxhib-grained ntau ntau yam, feem ntau hu ua soapstone.

Nws xim mas nws txawv ntawm ntsuab rau ntshiab dawb, tsis hais ntawm cov xim nws yog notable rau nws pearly sheen. Nws yog heev mos kov thiab muab lub tswv yim ntawm lubricity. Raws li cov Mohs hardness yog soj ntsuam raws li "1" (yam tsawg kawg nkaus).

Raws li peb paub nws - nws yog oily ntxhib hmoov, uas yog hu ua "talc". Lub pob zeb no yog dav faib vim hais tias cov tej yam kev mob ntawm nws tsim geology haum txheem.

Hais lus ncav, nws tshuaj lub npe - qaub magnesium metasilicate H2Mg3 (SiO3) 4. Crystallization yuav siv sij hawm qhov chaw nyob rau hauv nws rhombic los yog monoclinic hom. Nyob rau hauv cov xwm, nyob rau hauv ib nplooj zoo li tus los yog granular formations.

Los ntawm cov geological taw tes ntawm view, talc - ib theem mineral tau tsim tom qab cov tshuaj transformation bezalyuminievyh magnesium silicates. Feem ntau xws li ib tug metamorphosis undergoes amphibole los yog pyroxene.

Heev feem ntau, nyob rau hauv tsos nws yuav ua tau tsis meej pem nrog tus "niam txiv", raws li nws siab khaws nws crystalline qauv, differing xwb nyob rau hauv lawv cov tshuaj nyob tus yeees.

Tus heev tib yam talc, uas nws yees duab yog nyob rau hauv daim ntawv, yog muaj nuj nqis vim hais tias ntawm nws cov xim: lub hniav dawb nws yog, qhov ntau nyob rau hauv coob khoom. Nws yuav tsum tau muab sau tseg tias kev lag luam tsuas yog siv feeb talc, zoo heev zoo av.

Kuv tsis xav hais tias yog hais tias qhov khoom yog pom nyob rau hauv cov xwm tsuas nyob rau hauv ib daim ntawv. Muaj ob peb ntawm nws hom sib txawv muaj nuj nqis nyob rau hauv lawv cov tshuaj nyob tus yeees thiab lub zog:

• Minnesotaite (nws muaj txog li 50% hlau).
• Villemseit (muaj xws li npib tsib xee).
• Steatite (uas yog feem ntau hu ua wen), yus muaj los ntawm ib tug tsis tshua tuab thiab khoom qauv.
• Malaga. Tsis zoo li nws cov thawj ntawm, nws yog ib tug heev nplua fiber.
• Noble talc: qhov zoo tshaj plaws zoo, nyob rau lub noble dawb.

Feem ntau ntawm talc mined nyob rau hauv lub tebchaws United States. Nyob rau hauv loj tagnrho no ib yam tsiaj yog tsim nyob rau hauv Brazil, South Kauslim, Nyiv thiab Russia.

Yog li ntawd ua li cas koj siv talcum hmoov? Lub pob zeb no tau lawm hos raws li ib tug hmoov, "taub txuas" nyob nruab nrab ntawm cov roj hmab yam, raws li ib tug tub lim, thiab yog dav siv los ntawm perfumers los tsim tshiab ntawm ntau yam hmoov.

Tsuas yog nws yog feem ntau haum rau lub creation ntawm qhov zoo tshaj plaws piv txwv ntawm qhov no zoo ntawm pleev. Los ntawm txoj kev, siv tsuas los ntawm kev tailors 'cwj mem av dawb', uas yog raws li nyob rau hauv tag nrho cov tib talc. Cov kev lag luam yog zoo nws ntau ntau yam yog siv nyob rau hauv qhov siv thiab ua hluav taws xob insulators.

Los ntawm txoj kev, yuav ua li cas npaum li cas yog talc? Rau hnub tim, tus nqi yog hais txog 1000 Roubaud ib kilogram ntawm siab zoo as cov ntaub ntawv uas.