Andorite

Andorite – PbAgSb3S6
Elements: Lead, Silver, Antimony, Sulfur
Class: Sulfides – Sulfosalt
Crystal System: Orthorhombic
Hardness: 3-3.5
Calcite
Talc (1)Diamond (10)
A copper coin can scratch it.
Origin: San José Mine, Cercado Province, Oruro – Bolivia
Did you know?

Andorite is named for Andor von Semsey, a Hungarian nobleman who built one of his era's great mineral collections and gave it to his country's national museum. He is honored twice in the rock record, with both andorite and semseyite named after him.