This is a rich of specimen of one of the most unique species in all the mineral kingdom. Cylindrite is a lead, iron, tin, antimony sulfosalt that forms in "cylinder" or "tube" shaped crystals, hence the name. This specimen is especially nice considering that is has some very thick crystals. The crystals are quite long as well, measuring up to 1,5 cm. The mine at Poopo is the TYPE LOCALITY for the species. This piece came from an old German collection, where the species is spelled with a "K" as opossed to a "C." A great opportunity for any collector to own a species rarely seen for sale in today´s market.