noun🔗ShareCalciteA very widely distributed crystalline form of calcium carbonate, CaCO3, found as limestone, chalk and marble"Many caves are formed from limestone, which is mostly made of the mineral calcite. "De nombreuses grottes sont formées de calcaire, qui est principalement composé du minéral calcite.geologymineralsubstancechemistrymaterialChat with AIVocabulary GamePractice Reading