coltan Definition

ore, cassiterite, tantalite, tantalum, wolframite, columbite, niobium, uranium ore, ilmenite, manganese, minerals, bisie, niobite, drc, dysprosium, ilmenium, eschynite, eastern lowland gorilla, tantalic, euxenite, tantalous, cobalt, raw materials, neodymium, rare earth, tinstone, diamonds, niobous, fergusonite, niobic, tanzanite, praseodymium, thorianite, pelopium, metallic element, hausmannite, europium, calaverite, barium sulphate, ores, volborthite, indium, dyscrasite, fluorspar, metals, cupric sulfate, menaccanite, aurichalcite, terbium, skutterudite, germanite, ullmannite, gum arabic, tantalic acid, lithium, chondrodite, mineral resources, amblygonite, stephanite, cobaltite, phenakite, rhodium, stannite, torbernite, bismuthinite, thortveitite, nagyagite, ferrochromium, stannine, ytterbite, saltpeter, bauxite, argyrodite, kivu, samarskite, uranium, pargasite, brochantite, nickeline, tennantite, molybdite, senarmontite, tetradymite, condurrite, tephroite, gahnite, niccolite, strontianite, beryl, lanthanite, pyrites, cerargyrite, bournonite, tsavorite, mineral, baddeleyite, stockpiler, libethenite, triplite, smaltite,