n. [ Gr. &unr_; (sc. &unr_;), fr. chlwro`s light green. ] (Min.) The name of a group of minerals, usually of a green color and micaceous to granular in structure. They are hydrous silicates of alumina, iron, and magnesia. [ 1913 Webster ]
Chlorite slate, a schistose or slaty rock consisting of alumina, iron, and magnesia. [ 1913 Webster ]