Corewaves Resources Ltd supplies coltan (columbite-tantalite) from pegmatite and alluvial deposits in Nigeria — processed for tantalum capacitors and electronics-grade alloys.
| Formula | (Fe,Mn)(Ta,Nb)₂O₆ |
| Crystal system | Orthorhombic |
| Hardness (Mohs) | 6.0 – 6.5 |
| Specific gravity | 5.2 – 8.0 |
| Colour | Black to brown |
| Deposit type | Pegmatite / alluvial |
Coltan (columbite-tantalite) is refined into tantalum, a critical metal for capacitors used in smartphones, laptops and other consumer electronics, as well as superalloys for aerospace and medical implants. Corewaves processes coltan to preserve tantalum content ahead of export, with full chain-of-custody documentation.
Typical buyers: Tantalum capacitor manufacturers, electronics component suppliers, superalloy producers.