Guettardite

Sulfosalt mineral

Guettardite is a rare arsenic sulfosalt mineral with the chemical formula Pb(Sb,As) 2S 4. It forms gray black metallic prismatic to acicular crystals with monoclinic of the triclinic.

Identification

Color of mineral

Grey

Black

Red

White

Mohs scale ( mineral hardness )

Luster ( interacts light )

Metallic

Crystal ( diaphaneity )

Monoclinic