Why iron classified as a mineral?

Iron is classified as a mineral because it is a naturally occurring inorganic substance with a definite chemical composition and characteristic crystalline structure. It is typically found in nature in the form of iron ores, such as hematite and magnetite. As a vital element, iron plays a crucial role in various geological processes and is essential for many biological functions. Its properties, including hardness and metallic luster, further support its classification as a mineral.