Oregrounds iron
= Oregrounds iron
{wiki=Oregrounds_iron}
"Oregrounds iron" seems to be a typographical error or a miscommunication regarding "ore grounds" or "iron ore." If you meant "iron ore," it refers to naturally occurring minerals from which iron can be extracted. These minerals are primarily oxides of iron, such as hematite (Fe2O3) and magnetite (Fe3O4).