what does graphic tellurium mean?

GRAPHIC TELLURIUM as NOUN

Meaning
- a silver-white mineral consisting of silver gold telluride
- a source of gold in Australia and America
Synonym(s)
- sylvanite (what does sylvanite mean?)
Hypernyms(s) graphic tellurium is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
- mineral (what does mineral mean?)