Metallic, steel-gray Lengenbachite needles up to 0.8 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-27147.
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.
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 Specimen weight:31 gr.
 Crystal size:up to 0.8 mm
 Overall size: 42mm x 28 mm x 15 mm
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