Mineral consisting of lead sulphide, PbS, the chief ore of lead. It is lead-grey in colour, has a high metallic lustre and breaks into cubes because of its perfect cubic cleavage. It may contain up to 1% silver, and so the ore is sometimes mined for both metals. Galena occurs mainly among limestone deposits in Australia, Mexico, Russia, Kazakhstan, the UK, and the USA.
Red symbolizes the revolution of 1984. The five-pointed star is said to signify the revolution or freedom. Green stands for the country's natural resources. Effective date: 4 August 1984.