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Lengenbachite - Lengenbach Quarry - Binnatal - Wallais - Switzerland (Type Locality) (#:MINS9160)

Metallic, steel-gray Lengenbachite needles up to 1 mm in a vug of white contrasting dolomia matrix with Dufrénoysite xl 5 mm wide and Realgar in association, from the famous Swiss and type locality. Regional Museum Binn n. L-23815.

Formula :
Pb₆(Ag,Cu)₂As₄S₁₃
System: triclinic Hardness:1-2 Rarity:very rare
Strunz id:II/E.15-50 - SULFIDES
Name origin: From the type locality, the Lengenbach quarry, Binntal, Valais, Switzerland.