Kazakhstan's mineral resource base is characterized by a large number of oilfields and gasfields and by a large variety of mineral resources. The country ranks among the world's leading countries in its reserves of chromite, wolfram, lead, zinc, manganese, silver and uranium. It also has significant reserves of bauxite, copper, gold, iron ore, coal, natural gas andm. According to data reported from Kazakhstan, the country is one of the 10 leading countries in the world for a significant number of miner