Stützite

Stützite or stuetzite is a silver telluride mineral with formula: Ag_5−xTe₃ (with x = 0.24 to 0.36) or Ag₇Te₄.

It was first described in 1951 from a museum specimen from Sacarimb, Romania. It was named for Austrian mineralogist Xavier Stütz (1747–1806).