tantalite mining areas in zimche

Coltan-Mining and Processing, Technology, Production ...- tantalite mining areas in zimche ,coltan Mining and Processing ... Coltan is a dull metallic ore found in major quantities in the eastern areas of Congo. When refined, coltan ... Tantalite ore prices ...Tantalum and niobium - Department of Natural Resources ...Tantalum and niobium ... produced in Thailand and Malaysia as a by-product of tin mining. ... area, for example, Cumberland. Tantalite ...