CHEMISTRY - Pb3Sn4FeSb2S14
CRYSTALLOGRAPHY - Triclinic
CRYSTAL GROWTH AND HABITS - Cylindrite forms concentric spherical or tubular shells and aggregates. It can also be massive.
COLOR AND OPTICAL PROPERTIES - Silver white to dark gray. Opaque.
HARDNESS - 2.5
SPECIFIC GRAVITY - 5.4 - 5.5
LUSTER - Metallic
STREAK - Black
BREAKABILITY - Very good cleavage along {100}; somewhat malleable.
OCCURRENCE - Cylindrite is found in tin bearing hydrothermal veins.
ASSOCIATED MINERALS - Franckeite, Stannite, Jamesonite, Cassiterite, Galena, Pyrite
MINERAL NAME - In allusion to its cylinder shaped habit.