FeAsO4H2O
FeAsO4H2O is the chemical formula for a hydrated iron arsenate compound. The "Fe" represents iron, "AsO4" represents the arsenate polyatomic ion, and "H2O" indicates the presence of water molecules within the crystal structure, signifying it is a hydrate. The stoichiometry suggests one iron atom, one arsenate group, and two water molecules per formula unit. This compound belongs to the broader class of arsenate minerals, which can be of environmental and toxicological concern due to the presence of arsenic. The precise physical and chemical properties of FeAsO4H2O would depend on its specific crystalline form and purity. Further characterization would involve techniques like X-ray diffraction to determine its structure and spectroscopic methods to confirm its composition. Information on its natural occurrence, synthesis methods, and potential applications or environmental behavior would require more specific scientific literature.