Fe2Si2O6

Fe2Si2O6 is the chemical formula for a mineral. This formula represents an iron silicate compound. Minerals with this specific formula are members of the pyroxene group, which are a significant class of rock-forming silicates. The structure of pyroxenes is characterized by infinite chains of SiO4 tetrahedra. In Fe2Si2O6, iron typically occupies the M1 and M2 crystallographic sites within the pyroxene chain structure.

This particular composition can exist in different mineral forms depending on the specific arrangement of iron atoms and their oxidation states, as well as minor substitutions with other elements. However, the most common mineral that fits this formula is often discussed in the context of the clinopyroxene series. The physical properties, such as color, hardness, and specific gravity, are influenced by the iron content. This compound is generally dark in color due to the presence of iron. Its occurrence is primarily in igneous and metamorphic rocks. Further characterization and classification depend on detailed crystallographic and chemical analysis.