Tellurogermanate
Tellurogermanates or telluridogermanates are compounds with anions with tellurium bound to germanium. They are analogous with germanates, thiogermanates and selenidogermanates. Properties 
Most tellurogermanates are coloured black. They are semiconductors with a small band gap. Ge4Te104− forms an adamantane structure. List

References

Tellurium compounds
Germanium compounds