Fe3Al2Si3AlO10OH2

Fe3Al2Si3AlO10OH2 is a chemical formula representing a mineral belonging to the mica group. Specifically, it is a variety of chlorite, which are phyllosilicate minerals. The presence of iron (Fe), aluminum (Al), silicon (Si), oxygen (O), and hydroxyl (OH) groups indicates its complex structure and composition. The formula suggests a significant proportion of iron and aluminum within the silicate framework. Minerals with this general formula are often found in metamorphic rocks, particularly those formed under low to medium-grade metamorphic conditions. They can also occur in altered igneous rocks. The specific physical properties of Fe3Al2Si3AlO10OH2 would depend on its precise crystal structure and the presence of any minor element substitutions. Micas like this are characterized by their perfect basal cleavage, meaning they easily split into thin, flexible sheets. The color of such minerals can vary, often exhibiting shades of green due to the iron content. Identification and classification within the broader chlorite group require detailed mineralogical analysis, including X-ray diffraction and chemical analysis.