Tantalum.Export
Tantalum and niobium concentrate.
Tantalum.Produce
Tantalum ore.
Ferro-silicon, Tantalum, Niobium.
Tantalum, niobium, lead concentrate.Export
Columbita or tantalum ore.
Niobium above 50%, copper above 60%, tantalum.
Rare earth; tantalum ta, niobium nb, rhodium rh, iridium ir, palladium pd, cadmium cd, ruthenium ru, etc...
.
Coltan with tantalum .
Tantalum pentoxide.