This Specimen has been sold.
1.9" Sphalerite and Quartz Association - Peru
This is a beautiful specimen that contains an association of sphalerite and quartz crystals. It comes from the Huanzala Mine in Peru and the entire specimen measures 1.9" long.
Sphalerite is a part of the sulfides group and typically exhibits a grey/black appearance due to high concentrations of impurities. When sphalerite is in it's purest state, the chemical composition is ZnS, and can display a gemmy transparent light tan/yellow color. This is one of the few minerals that can form crystals ranging anywhere between gemmy and transparent to opaque and metallic-like. Opaque or cloudy sphalerite tends to be most abundant, due to the ease of iron replacing zinc in the process of formation.