Minerals identify

Know how to recognize them

Gabrielite

Sulfide mineral

Gabrielite is a rare thallium sulfosalt mineral with a chemical formula of Tl 6Ag 3Cu 6(As,Sb) 9S 21 or Tl 2AgCu 2As 3S 7.

It was first reported in 2002 for its occurrence in the Lengenbach, Switzerland , and named after Walter Gabriel (born 1943), a Swiss 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.

Identification

Color of mineral

Grey
Black

Mohs scale ( mineral hardness )

1.5

The streak

Red

Luster ( interacts light )

Metallic

Crystal ( diaphaneity )

Triclinic