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 ...

Kenya has discovered its first deposits of the valuable mineral coltan, the mining minister has said. The rare mineral is used to manufacture electric car batteries, mobile phones and other ...

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 ...

Democratic Republic of the Congo says tech giant has been using controversial minerals from sub-Saharan Africa.

The rebels also captured Rubaya, a town at the heart of coltan mining. The mineral is strategically important for the energy ...