Dolomite (mineral)
Dolomite ( / ˈdɒl.əˌmaɪt, ˈdoʊ.lə /) is an anhydrous carbonate mineral composed of calcium magnesium carbonate, ideally CaMg (CO3)2. The term is also used for a sedimentary carbonate rock composed mostly of the mineral dolomite. An alternative name sometimes used for the dolomitic rock type is dolostone .