Tetrahedrite
Tetrahedrite is a sulfosalt mineral recognized among collectors for its crystal form and distribution, with notable Chinese occurrences.
About Tetrahedrite
Tetrahedrite is classified as a sulfosalt mineral in the tetrahedrite group and has the chemical formula (Cu,Fe)12Sb4S13. It crystallizes in the isometric system and is relatively soft, requiring careful handling.
Identification & care
Tetrahedrite typically forms tetrahedral crystals (distinctive — always shows tetrahedra despite isometric system); massive; granular. Its color is typically steel gray to iron-black. The luster is metallic, sub-metallic, the streak is black to dark red, and specimens are typically opaque. The fracture is subconchoidal to uneven, which is one of its key identifying features.
Collector context
Collector notes
For decorative mineral collectors, Tetrahedrite is appreciated for its visual character. Documented Chinese occurrences are recorded at Bayan Obo deposit, among others.