Description
Here we have a nice specimen of lead gray, metallic Franckeite from San José Mine of Oruro in Bolivia and this is one of the rarest sulfosalts in the world. This specimen is a very rich, incredibly rare, superb quality, crystallized specimen of the triclinic Lead, Tin, Iron, Antimony sulfosalt Franckeite consisting of "sphere"-shaped aggregates uo to 0,9 cm. A good opportunity to acquire something that is rarely offered in the open market. This species belongs to the only group of minerals that forms in naturally "round" or "cylindrical" shaped crystals. This specimen is over 30 years old and was part of the collection of Bavarian collector Bernhard Dünkel.