White solid, found in nature as limestone, marble, and chalk. It is a valuable resource, used in the making of iron, steel, cement, glass, slaked lime, bleaching powder, sodium carbonate and bicarbonate, and many other industrially useful substances.
The yellow of the emblem is said to denote Angola's natural wealth. Red is said to stand for the blood spilt by the freedom fighters. Black represents Africa. Effective date: 11 November 1975.