Phlogopite

[flɔgәpait]

Definition

(noun.) a brown form of mica consisting of hydrous silicate of potassium and magnesium and aluminum.

Typed by Connie--From WordNet

Definition

(n.) 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.

Editor: Percival