Franckeite (Var: Potosiite), Franckeite
San Jose Mine, Oruro City, Cercado Province, Oruro Department, Bolivia
Miniature, 5.0 x 4.0 x 2.0 cm
Sharp crystals of several habits, to 6mm. This is a relatively new occurrence for the species, as noted only recently by Alfredo Petrov. Both straight crystals and as very large, distinct, highly lustrous, curved crystals (in appearance as if one were to curl their finger). 5 x 4 x 2 cm