5.05" Quartz Crystal Cluster with Sphalerite - Peru

About The Huanzala Mine

The Huanzala Mine in Peru, located in the Huallanca district of the Huánuco region, is one of the world’s most famous mineral-producing mines. Nestled in the Andes Mountains at high elevations, this mine is renowned for its high-quality and vividly crystallized mineral specimens, especially pyrite, galena, and sphalerite. The pyrite crystals from Huanzala are particularly notable for their large size, sharpness, and brilliant metallic luster, often exhibiting cubic or pyritohedral shapes that make them highly prized among collectors. In addition to pyrite, the mine produces other well-crystallized minerals, including fluorapatite, quartz, sphalerite and chalcopyrite, each renowned for clarity and intricate formations.

Operational since the early 20th century, Huanzala is primarily an industrial source of lead and zinc. However, its mineral specimens have attracted worldwide attention, positioning it as an important site for mineral collectors. The mine’s extreme altitude and challenging terrain make it difficult to access, adding to the allure and rarity of its minerals.

About Sphalerite

Sphalerite is the most important ore of zinc and a striking mineral prized for its brilliant luster and wide range of colors. Composed of zinc sulfide (ZnS), it commonly forms in cubic or tetrahedral crystals and is found in hydrothermal veins, sedimentary deposits, and metamorphic environments around the world.

Although often brown to black, sphalerite can also occur in shades of honey-yellow, red, orange, and even green. Lighter-colored varieties are sometimes transparent to translucent and can display exceptional dispersion—meaning they separate light into spectral colors more intensely than diamond—giving well-cut specimens a fiery, eye-catching sparkle. Darker specimens are typically opaque with a resinous to submetallic luster.