Mineralpedia Details for Baumhauerite

Baumhauerite

Formula: Pb₁₂As₁₆S₃₆
Crystal System: Triclinic
Crystal Habit: Crystalline - Fine
Cleavage: Perfect, None, None
Luster: Metallic
Color: lead gray, steel gray
Streak: chocolate brown
Class: Triclinic - Pinacoidal
Fracture: Conchoidal
Hardness: 3
WebMineral: View Baumhauerite
Mindat: View Baumhauerite

Baumhauerite from Lengenbach quarry, Binn Valley, Wallis, Switzerland

Special Info: Type Locality

A dark steel-gray thin prismatic Baumhauerite to 8mm with deep striations set in a vug with red-orange crystalline Realgar in Pyrite rich sugary matrix. There are also dark steel-gray minerals present without any form that may also be Baumhauerite or another related species.

We're certainly not experts in the rare sulfosalts and sulfides of Lengenbach and this specimen has not been verified beyond our sight ID.