Owyheeite is a noun that refers to a rare mineral, specifically a mineral of the marcasite group. It is named after the Owyhee River, which flows through Oregon, Idaho, and Nevada in the United States.
Owyheeite has a distinct crystalline structure, typically occurring in orthorhombic crystals. Its coloration is primarily silver-gray, often with a metallic luster. This mineral is characterized by its high density, usually ranging between 4.73 and 4.80 g/cm³. It possesses a relatively high hardness, ranking around 6 on the Mohs scale.
It is commonly found in hydrothermal veins and epithermal environments, often associated with other minerals such as cinnabar, quartz, and pyrite. Owyheeite primarily consists of iron, antimony, and sulfur, with the chemical formula FeSb₂.
Due to its limited occurrence, owyheeite is deemed a collectors' mineral of notable interest. The name "owyheeite" is specifically used to designate this mineral, distinguishing it from similar minerals of the marcasite group. The term can also be used to describe rocks or geological formations that contain a significant amount of owyheeite.
In summary, owyheeite is a rare silver-gray mineral of the marcasite group. Its name originates from the Owyhee River, and it is primarily composed of iron, antimony, and sulfur. With a distinct crystalline structure and notable physical properties, owyheeite is highly valued among mineral collectors.
