noun ダウンロード 🔗共有 方解石 A very widely distributed crystalline form of calcium carbonate, CaCO3, found as limestone, chalk and marble Examples : "Many caves are formed from limestone, which is mostly made of the mineral calcite. " 多くの洞窟は石灰岩から形成されており、それは主に鉱物方解石でできています。 geology mineral substance chemistry material AIとチャット語彙ゲーム読解練習