Blue-grey crystal aggregates of sabatierite associated to grey berzelianite crystals. Sabatierite is a very rare thallium selenide mineral (Cu6TlSe4) found only in 5 localities worldwide, this specimen being from the type locality: Bukov Mine, Rožná, Žďár nad Sázavou District, Vysočina Region, Czech Republic. Ex Vandenbroucke Museum collection from Waregem, Belgium. — Photo: David Hospital · CC BY 4.0
Sabatierite
A copper-thallium selenide found in the Czech Republic, crystallizing in the tetragonal system.
Intro adapted from Wikipedia (CC BY-SA).
Sabatierite is an IMA-recognized mineral species in the sulfide class, with the chemical formula Cu₆TlSe₄.
It crystallizes in the tetragonal crystal system (space group I4/mmm).
Key properties: specific gravity 6.78; Metallic luster.
IMA symbol Sab, IMA status: approved, named in 1976.
Found in calcite veins.
It is found associated with Crookesite, berzelianite, umangite, bukovite.
The mineral was named to honor Germain Sabatier (1923–), former Director of Research, C.N.R.S., Orléans, France.