Magnetite - WikipediaMagnetite is a mineral and one of the main iron ores. With the chemical formula Fe3O4, it is one . Compositions of the mineral pairs are used to calculate how oxidizing was the magma (i.e., the oxygen fugacity of . Pennsylvania, North Carolina, West ia, ia, New Mexico, Utah, and Colorado in the United States.formula for finding fe n magnetite ore,Magnetite Mineral DataChemical Formula: Fe++Fe+++2O4 . Magnetic iron ore. PDF 19-629 . Comments: Black, opaque octahedral crystals of magnetite on matrix. . 400 nm, 22.30.
formula for finding fe n magnetite ore