Group of clay minerals, such as kaolinite, Al2Si2O5(OH)4, derived from the alteration of aluminium silicate minerals, such as feldspars and mica. It is used in medicine to treat digestive upsets, and in poultices.
Kaolinite is economically important in the ceramic and paper industries. It is mined in the UK, the USA, France, and the Czech Republic.
Green represents fertility. Yellow stands for sunshine. Black recalls the people's African origins. Red symbolizes the struggle for liberty. Effective date: 19 September 1983.