Au'gite, n.

n. [Fr. augite, Lat. augites, Gr. αὐγίτης, from αὐγή, brightness.] A mineral, called by Haüy pyroxene; occurring crystallized in oblique prismatic forms, and also massive, lamellar, granular, and fibrous, and presenting usually some shade of green, but sometimes white or black. It consists chiefly of silica, magnesia, lime, often with oxide of iron, and sometimes oxide of manganese. It occurs as a constituent of lavas, trap, and basalt, and also of many other crystalline rocks.