A very rich specimen of lustrous, metallic, cylindrical crystals to 3.0 cm of the rare sulfosalt cylindrite from Poopo, Bolivia. These are very long crystals for the species and yes, they ARE truly weird cylndrical crystals!!!. Ex Richard Hauck Collection. HARD TO GET PIECES WITH SUCH NICE DEFINITION! 5.5 x 3.3 x 2.6 cm