Pyrrhotite is a mineral composed primarily of iron and sulfur, often found in igneous and metamorphic rocks. It typically appears as metallic, bronze-colored crystals and can vary in composition, sometimes lacking a complete iron content. This mineral is known for its magnetic properties, which can make it an interesting subject for geological studies. In addition to its geological significance, pyrrhotite can pose challenges in construction and mining. When exposed to moisture, it can oxidize and produce sulfuric acid, leading to environmental concerns such as acid mine drainage. Understanding its properties is essential for managing these risks effectively.