Ca2Fe22Fe3SiO42O2OH

Ca2Fe22Fe3SiO42O2OH is a complex mineral belonging to the garnet group. Its chemical formula indicates a structure rich in calcium and iron, with a significant silicon component. The presence of both Fe(II) and Fe(III) ions within its crystal lattice is a key characteristic. This mineral is often found in metamorphic rocks, particularly those that have undergone high-grade metamorphism. Its formation is typically associated with environments where iron-rich protoliths are subjected to intense heat and pressure. The exact geological conditions and mineral assemblages in which Ca2Fe22Fe3SiO42O2OH occurs can provide valuable insights into the metamorphic history of the host rocks. The optical properties of this garnet, such as its color and refractive index, are influenced by its specific chemical composition and the oxidation state of its iron content. Due to its complex formula and the potential for variations in iron substitution, precise identification may require advanced analytical techniques such as electron microprobe analysis. While not as commonly known as some other garnet species, Ca2Fe22Fe3SiO42O2OH contributes to our understanding of mineral diversity and the intricate processes of rock transformation.