Skip to content
Mineralati

Minerals

Gabrielite

gabrielite

Tl2AgCu2As3S7

Gabrielite Image

Gabrielite Image — via webmineral.com · Source

Overview

Gabrielite is an extremely rare thallium sulfosalt mineral with a chemical formula of Tl6Ag3Cu6(As,Sb)9S21 or Tl2AgCu2As3S7. It was first reported in 2002 for its occurrence in the Lengenbach quarry, Binntal, Valais, Switzerland. According to Faszination Lengenbach (2008), only 2 specimens are known. A few dozen tiny fragments like the one pictured are circulating few collections. 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.

Scientific references

  1. Gabrielite — Wikidata. https://www.wikidata.org/wiki/Q3756715 Link
  2. Gabrielite — Wikipedia. https://en.wikipedia.org/wiki/Gabrielite Link