Sabatierite
Sabatierite
Selenide of copper and thallium
Sabatierite (Cu6TlSe4) is a mineral found in the Czech Republic. The composition of the mineral is more likely (Cu4TlSe3) that has been chemically and crystalographically characterized having tetragonal symmetry.[2] It is named for the French mineralogist Germain Sabatier (born 1923).[3][4][5]