· Mining . Guyana is among the world's largest bauxite producers. The sector accounted for about 10% of the nations GDP in 2014. The sector contributed 40% of the nation's exports in the same year. Other major mineral resources in the country include diamonds, gold, uranium, and alumina. In 2005, the nation produced 356,950 carats of diamonds, 262,528 ounces of gold, and million tons .