Franckeite (Var: Potosiite), Franckeite
Toenail, 3.0 x 2.0 x 1.0 cm
San Jose Mine, Oruro City, Cercado Province, Oruro Department, Bolivia
Superb, sharp crystals of several habits, to several mm, densely coat this specimen. So far as I am aware from my sources, there were only a handful of these extracted (though it is possible many were simply thrown in the garbage and not recognized for what they were!). These occur as both straight crystals and as very large, distinct, highly lustrous, curved crystals. 3 x 2 x 1 cm