Franckeite (Var: Potosíite)
San José Mine, Oruro, Cercado Province, Oruro, Bolivia
9 x 6.8 x 2.7 cm. From the new find of 2004, this specimen hosts two of the rarest sulfosalts in the world. This specimen is a very attractive, incredibly rare, superb quality, crystallized specimen of the triclinic lead, antimony, iron, tin sulfosalt Potosiite consisting of several, extremely rare, highly lustrous, heavily striated, tabular ...
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