DR Congo is rich in minerals, but most of its citizens are poor A town at the heart of mining coltan, a key ingredient in making mobile phones, has been seized in eastern Democratic Republic of ...

News has it that a rare ore, columbite-tantalite (coltan), was discovered around the Kiritiri, the headquarters of the sub-county. Parts of this sub-county are incredibly rocky; no wonder colten ...

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 ...