Tags: Chemical Substance, Mineral.
Gabrielite is a rare thallium sulfosalt mineral with a chemical formula of Tl6Ag3Cu6(AsSb)9S21 or Tl2AgCu2As3S7.It was first reported in 2002 for its occurrence in the Lengenbach quarry Binntal Valais Switzerland and named after Walter Gabriel (born 1943) a Swiss mineral photographer.This region was transformed during the greenschist-garnet/amphibolite facies of metamorphism. Due to this many rare sulfosalts like gabrielite are found in this part of Switzerland.