Dolomite, trigonal carbonate ntxhia, muaj cov tshuaj formula CaMg (CO3)2. Qee zaum nws muaj cov ntsiab lus isomorphous xws li hlau thiab manganese, uas hloov cov magnesium. Thaum cov hlau los yog manganese atoms ntau tshaj li ntawm magnesium, nws hu ua hlau dolomite los yog manganese dolomite.
Dolomite crystals yog rhombohedral, nrog lub ntsej muag siv lead ua feem ntau nkhaus rau hauv lub eeb duab; polysynthetic twinning kuj tseem muaj. Nws cov aggregates feem ntau yog granular. Ntshiab dolomite yog dawb, grey thaum muaj hlau, thiab xim av tom qab huab cua. Nws muaj vitreous luster thiab yog cov ntxhia tseem ceeb ntawm dolomite.
Marine sedimentary dolomite feem ntau tshwm sim interbedded nrog siderite thiab limestone txheej. Hauv lacustrine sediments, dolomite yog txuam nrog gypsum, anhydrite, halite, thiab poov tshuaj halite.
Cov yam ntxwv ntawm dolomite muab nws qhov chaw tseem ceeb hauv thaj chaw ntawm geology thiab mineralogy. Nkag siab txog dolomite zoo li qhib qhov rooj rau lub ntiaj teb geological.
