Numerous crystals of Cylindrite exposed on all sides of specimen. Cylindrite is a sulfosalt mineral containing tin, lead, antimony and iron and the cylindrical crystal form is unique in the mineral world. This specimen has large crystals to 6mm in diameter (most have much thinner crystals). Associated minerals include Wurtzite, Zinkenite, and Valentinite. Ex. Erich Laskowski collection, purchased from Kristalle in 1996.