germanite
/ˈdʒɜrməˌnaɪt/
noun
- A rare gray mineral composed of copper, germanium, and sulfur, sometimes used as a source of germanium.
- Germanite was first discovered in the Tsumeb mine in Namibia.
- Mineral collectors prize germanite for its rarity and metallic luster.
- The specimen of germanite contained traces of gallium as well.