Formula: Pb₃Sn₄FeSb₂S₁₄

Species: Sulfosalts

Colour: Grey-black

Lustre: Metallic

Hardness: 2½

Specific Gravity: 5.43 – 5.49

Crystal System: Triclinic

Member of: Cylindrite Group

Name: From the Greek κύλιυδροσ, a roll, in allusion to the typical cylindrical habit of the mineral.

Type Locality: Santa Cruz Mine, Poopó, Poopó Province, Oruro – Bolivia