Large Octahedral Pyrite Cluster

What Is Pyrite? Pyrite, often known as "Fool's Gold" for its striking, metallic luster and gold-like appearance, is an iron sulfide mineral with the chemical formula FeS2. Its name comes from the Greek word 'pyr' meaning 'fire' because it produces sparks when struck against metal or hard materials. Pyrite forms in various geological environments, including in hydrothermal veins, sedimentary rocks, and metamorphic rocks, and it's known for its cubic or octahedral crystal shapes​. How Does Pyrite Form? Pyrite forms under reducing conditions where there's a lack of oxygen, abundant sulfur, and iron. This can happen through hydrothermal, sedimentary, and metamorphic processes. In hydrothermal veins, pyrite precipitates from cooling mineral-rich fluids. In sedimentary environments, it can form from the reaction of sulfur from decaying organic matter with iron minerals. During metamorphism, pyrite can form from existing minerals under high temperature and pressure​. What Are the Healing Prop