CR76AI6: An association that is very uncommon at Pasto Bueno of Hübnerite and crystals of the Tennantite-Tetrahedrite Series. The Hübnerite is a floater crystal, between translucent and opaque, that has very well defined faces on both terminations. On this crystal there is a small group of Quartz crystals on which is a sharply twinned Tennantite-Tetrahedrite crystal.
The sample is from the Carles Curto collection whose label we’ll send to the buyer.
Huayllapon Mine (Huallapon Mine), Pasto Bueno, Pampas District, Pallasca Province, Ancash Department  Peru (±1984)

Specimen size: 5.6 × 2.8 × 2.1 cm = 2.20” × 1.10” × 0.83”