Offering coltan (columbite-tantalite) chemical formula formula : Fe++Ta2o6 packaging : drums / bulk bags inspections : ASI / SGS price: $40,000.00 per metric ton.
Origin : Democratic Republic of Congo.
Buyer comes and inspects goods before payment and shipment.
Specifications : Ta205 36.22% Nb205 19% th02 0.041% u308 0.103 moisture 0.073% atomic number 73 system orthorhombic molecular weight 513.74 gm mohs hardness 6 to 6.5 color variations of black specific gravity ~ 8.0
When having questions on Selling coltan ore, columbite tantalite, please send your inquury!
