Which of the following is the finest iron ore?

Hematite Magnetite  Siderite Iron Pyrites

Magnetite

The correct answer is option 2. Magnetite. The purest iron ore, magnetite, has an extremely high iron concentration of up to 72%. It is used in the electrical sector and has excellent magnetic properties. Another significant iron ore is hematite, however it has a somewhat lower iron concentration than magnetite.