SpecificationsTantalite ore, (coltan ore, columbite ore, tantalum ore) We have coltan ore ( columbite ore, tantalum ore, tantalite ore) in various grades by percentage from 25% to 45% with nobium of least by 20%. Inspection from buyers is highly recommended before supplies. We also allow long term contracts supplies and we supply non conflict minerals recommended for European international market fully verified by international bodies. 1kg of tantalum ore by percentage of 25% is at USD 55.00 and for 45% is at USD 99.00.