Sphalerite Crystals on matrix - Height: 15 cm - Width: 9 cm- 1.2 kg

Sphalerite is the chief ore of zinc and is known for its high dispersion and range of colors from yellow to dark brown or black. It typically forms tetrahedral or dodecahedral crystals, often on matrix rock, and can be highly lustrous due to its resinous to adamantine surface. This sulfide mineral commonly occurs with galena and other sulfides in hydrothermal veins. A sphalerite crystal cluster measuring 15 cm high and 9 cm wide with a mass of 1.2 kg offers a sizable and impressive example of this mineral's crystallography and economic importance. Collectors prize such specimens for their varied colors and crystal forms, which also serve as teaching aids for mineral identification and ore geology.