Qhov txawv ntawm calcite thiab halite yog calcite yog cov ntxhia hauv calcium carbonate, whereas halite yog cov ntxhia hauv sodium chloride.
Calcite thiab halite yog cov npe mineralogical. Cov no yog cov zaub mov uas muaj txiaj ntsig zoo rau kev tsim cov khoom sib txawv. Txawm hais tias cov npe suab zoo sib xws, lawv yog cov ntxhia sib txawv ntawm cov khoom sib txawv, yog li, cov tshuaj sib txawv thiab lub cev muaj zog.
calcite yog dab tsi?
Calcite yog cov ntxhia hauv daim ntawv calcium carbonate. Nws yog qhov ruaj khov tshaj plaws polymorph ntawm calcium carbonate. Yog li ntawd, nws yog ib tug carbonate mineral. Nws cov crystal system yog trigonal. Ntxiv mus, nws yog xim tsis muaj xim lossis dawb, tab sis qee zaum nws tshwm sim hauv cov xim sib txawv xws li grey, daj lossis ntsuab, nyob ntawm seb muaj pes tsawg leeg. Cov luster ntawm cov ntxhia no yog vitreous rau pearly ntawm qhov chaw cleavage thaum cov ntxhia streak yog dawb.
Calcite ntxhia muaj qhov nyuaj heev; nws Mohs hardness tus nqi yog 3. Qhov tshwj xeeb lub ntiajteb txawj nqus ntawm calcite yog 2.71. Ntxiv mus, cov ntxhia no tshwm sim li pob tshab lossis opaque. Qee zaum, nws yuav pom phosphorescence lossis fluorescence. Tsis tas li ntawd, ib qho crystals ntawm calcite qhia birefringence; Yog tias peb soj ntsuam ib yam khoom los ntawm cov siv lead ua no, nws tshwm ob npaug.
Tsis tas li ntawd, calcite tuaj yeem yaj hauv ntau cov kua qaub. Ib yam li ntawd, nws tuaj yeem yaj hauv av. Qee zaum, nws tau los nag los ntawm cov dej hauv av; Txawm li cas los xij, yam xws li kub thiab pH ntawm cov dej hauv av muaj kev cuam tshuam rau cov nag lossis daus no. Ntxiv mus, kev tsim kho kev lag luam yog cov neeg siv khoom tseem ceeb ntawm calcite; lawv siv cov pob zeb no hauv daim ntawv limestone thiab marble los tsim cov cement thiab pob zeb. Ntxiv rau qhov no, microbiologically precipitated calcite muaj ntau yam kev siv nrog rau kev kho av, av stabilization thiab kev kho pob zeb.
Halite yog dab tsi?
Halite yog cov ntxhia hauv daim ntawv ntawm sodium chloride. Lub npe nrov rau cov ntxhia no yog pob zeb ntsev. Nws cov qauv tshuaj yog NaCl. Halite yog lub npe mineralogical. Feem ntau, cov ntxhia no tsis muaj xim lossis dawb. Tab sis, qee zaum, nws yuav muaj xim xws li lub teeb xiav, xiav tsaus, ntshav, liab, liab, txiv kab ntxwv, daj lossis grey. Qhov no yog vim cov xim tuaj yeem sib txawv vim muaj cov impurities nrog rau sodium chloride.
Vim cov tshuaj formula ntawm chav tsev rov ua dua ntawm halite yog NaCl, cov mis loj yog 58.43 g / mol. Nws muaj ib tug cubic crystal qauv. Cov ntxhia yog nkig, thiab cov ntxhia pob zeb yog dawb. Thaum xav txog qhov tshwm sim ntawm cov ntxhia no, nws muaj nyob rau hauv cov txaj loj ntawm sedimentary evaporites. Cov evaporites no yog tsim los ntawm kev ziab ntawm cov pas dej, hiav txwv, thiab lwm yam.
Qhov tseem ceeb tshaj plaws ntawm kev siv ntsev no yog tswj dej khov. Brine yog ib qho kev daws ntawm dej thiab ntsev. Txij li cov brine muaj qhov qis qis dua piv rau cov dej ntshiab, peb tuaj yeem muab cov brine lossis pob zeb ntsev rau hauv dej khov (ntawm 0 ° C). Qhov no yuav ua rau cov dej khov yaj. Yog li ntawd, nyob rau hauv huab cua txias, tib neeg kis tau cov ntsev no nyob rau hauv lawv txoj kev taug kev thiab txoj kev tsheb kom yaj cov dej khov ua ib tug de-icing agent.
Qhov txawv ntawm Calcite thiab Halite yog dab tsi?
Calcite thiab halite yog cov npe mineralogical. Qhov sib txawv tseem ceeb ntawm calcite thiab halite yog cov calcite yog cov ntxhia hauv calcium carbonate, whereas halite yog cov ntxhia hauv daim ntawv ntawm sodium chloride. Yog li, cov tshuaj formula rau calcite yog CaCO3 thiab tshuaj formula ntawm halite nws yog NaCl. Tsis tas li ntawd, thaum xav txog qhov tsos, calcite tshwm sim nyob rau hauv cov xim sib txawv xws li grey, daj los yog ntsuab, whereas lub halite feem ntau tshwm sim nyob rau hauv cov xim sib txawv xws li lub teeb xiav, tsaus xiav, ntshav, liab, liab, txiv kab ntxwv, daj thiab grey. Tsis tas li ntawd, lwm qhov sib txawv tseem ceeb ntawm calcite thiab halite yog qhov siv lead ua ntawm calcite yog trigonal thaum lub cev siv lead ua ntawm halite nws yog cubic.
Summary – Calcite vs Halite
Calcite thiab halite yog cov npe mineralogical. Qhov sib txawv tseem ceeb ntawm calcite thiab halite yog calcite yog cov ntxhia hauv calcium carbonate, whereas lub halite yog cov ntxhia hauv sodium chloride.
