👉 Uthinia is a mineral found in various geological formations, primarily occurring in the Earth's crust. It can be characterized by its distinct coloration and chemical composition, which are typically greenish-brown or brownish-black in appearance. This mineral is primarily formed from the union of iron oxides, such as hematite (Fe2O3) and siderite (FeS2), which combine to form a layered structure that can be further divided into smaller crystals called orthorhombic
