Franckeite (Var: Potosiite), Franckeite
Thumbnail, 2.0 x 1.5 x 1.5 cm
San Jose Mine, Oruro City, Cercado Province, Oruro Department, Bolivia
Superb, sharp crystals of several habits, to about 4mm. These occur as both straight crystals and as very large, distinct, highly lustrous, curved crystals (in appearance as if one were to curl their finger). 2 x 1.5 x 1.5 cm