- Thumbnail, 2.0 x 1.7 x 1.0 cm
- Lengenbach, Binnental, Valais, Switzerland (Type Locality)
- Ex. Carlton Davis
A shockingly large single crystal of this rare lead arsenic sulfide, from the type locality. Carl Davis purchased this from Ward's in the 1940s after he got out of the war, as I recall him telling me, and always considered it one of his best rarities.