Pb₅Sb₄S₁₁

This sample of boulangerite is displayed in the Smithsonian Museum of Natural History. Boulangerite is an sulfide mineral of lead and antimony with the composition Pb₅Sb₄S₁₁ . This sample is about 6x6 cm and is from Pribram, Cechy, Czech Republic.

Boulangerite can form in thin, hair-like crystals. This also occurs in Jamesonite and Millerite.

Mindat: Boulangerite