Magnetite, iron oxide, iron ore similarities and differences - Global Drivers For High Grade Iron Ore - Magnetite Mines. 1 Substance/mixture Powdered natural iron ore. 2 Chemical nature This material is mainly composed by stable natural iron- and silicon oxides. 3 CAS No. (Magnetite) 1 (Serpentine) 4 Hazardous ingredients Not applicable 5 Composition, …Web