Dictionary entry

Phlogopite

Webster's Dictionary 1913

Phlog″o‐pite (?), n.(Min.) A kind of mica having generally a peculiar bronze-red or copperlike color and a pearly luster. It is a silicate of aluminia, with magnesia, potash, and some fluorine. It is characteristic of crystalline limestone or dolomite and serpentine. See Mica.