Pyrite Clusters | Mineral Specimen form Peru

These stunning Pyrite clusters from the Huanzala Mine in Peru formed over millions of years through complex hydrothermal and volcanic activity tied to the tectonic movements of the Andes mountain range. Hot, mineral-rich water circulates deep within the earth, carrying dissolved iron and sulfur. When these fluids hit cooler rocks and pressure drop, iron sulfide (FeS₂) crystallizes. The active geology of the Andes creates ideal fractures and pathways for these metal-bearing fluids to pool and form deposits. Peruvian pyrite frequently grows alongside other base and precious metals, including copper, zinc, gold, galena, sphalerite, and quartz.  These pyrite clusters are quite small, and are generally lime or lemon sized.