Ntuj marble yog cov pob zeb metamorphic tsim los ntawm cov thawj high-temperature thiab high-pressure pob zeb nyob rau hauv lub crust. Nyob rau lub pob zeb tawv, feem ntau yog tsim los ntawm calcite, limestone, serpentine thiab dolomite. Lub ntsiab tseem ceeb ntawm calcium carbonate, accounting rau ntau tshaj 50%. Muaj lwm yam magnesium carbonate, calcium oxide, manganese oxide thiab silicon dioxide. Raws li cov marble feem ntau muaj impurities, thiab calcium carbonate nyob rau hauv cov huab cua los ntawm carbon dioxide, carbides, noo noo kuj yooj yim rau huab cua thiab yaig, tawm hauv qhov chaw sai sai poob nws luster. Yog li ntawd, ob peb, xws li dawb marble, Ai Ye Qing thiab lwm yam ntshiab, tsawg impurities thiab ntau ruaj khov thiab ruaj khov ntau yam tuaj yeem siv sab nraum zoov, lwm yam yuav tsum tsis txhob siv sab nraum zoov, feem ntau tsuas yog siv rau sab hauv kho kom zoo nkauj.
Ntuj marble tuaj yeem ua rau qib siab zoo nkauj veneer rau sab hauv phab ntsa, pem hauv ntej, balustrades, pem teb, sills, kev pabcuam qhov rais hauv pej xeem cov tsev xws li tsev so, exhibition halls, theaters, khw malls, tsev qiv ntawv, tshav dav hlau, Taiwan, elevator lub ntsej muag lub ntsej muag kho kom zoo nkauj, thiab lwm yam., yog qhov zoo tshaj plaws hauv tsev kho kom zoo nkauj cov ntaub ntawv. Tsis tas li ntawd, kuj tseem siv tau los ua marble murals, handicrafts, khoom siv txhua hnub thiab lwm yam.
Marble yog cov limestone recrystallized uas softens ntawm qhov kub thiab txias thiab pressures thiab re-crystallizes los ua marble li cov minerals hloov. Cov khoom xyaw tseem ceeb yog calcium thiab dolomite, ntau xim, feem ntau nrog cov qauv pom tseeb, ntau cov pob zeb hauv av. Mohs hardness ntawm 2.5 mus rau 5 ntawm.
Marble muab faib ua peb pawg:
Dolomite: magnesite (calcium magnesium carbonate) cov ntsiab lus ntawm 40% lossis ntau dua
Forsterite: Magnesite (calcium magnesium carbonate) cov ntsiab lus ntawm 5% mus rau 40%.
Calcite: magnesite (calcium magnesium carbonate) cov ntsiab lus tsawg dua 5%
Limestone yog lub pob zeb xiav-grey los yog tawm-dawb pob zeb uas yog ib qho nyuaj thiab feem ntau siv hauv kev tsim kho kev lag luam. Nws cov khoom tseem ceeb yog calcium carbonate. Nrog hydrochloric acid los tsim carbon dioxide, dej thiab calcium chloride (CaCl2); calcined calcined tau txiv qaub (lub npe scientific ntawm calcium oxide CaO) thiab emit carbon dioxide. Nws kuj yog ib qho tseem ceeb raw khoom rau kev tsim kho kev lag luam. Quicklime thiab dej hnov mob los tsim slaked txiv qaub [Ca (OH) 2, tseem hu ua slaked txiv qaub] thiab tso tawm ntau cov cua sov. CaO + H2O ==== Ca (OH) 2
