Coltan is refined into tantalum, which is then used to manufacture smartphones and other electronic devices Kenya has discovered its first deposits of the valuable mineral coltan, the mining ...

Coltan is often refined into metallic tantalum, a heat-resistant powder that is used to produce capacitors, which are then used to manufacture electronic devices. The price of coltan depends on ...

Coltan is a metallic ore, which, when refined, changes into a heat-resistant powder that can hold a high electrical charge. This makes it a vital element in creating capacitors, the electronic ...