Iron ore is a metal of universal use. It is the backbone of modern civilisation.
Different types of iron ore contain varying percentage of pure iron.
Following four varieties of iron ore are generally recognised.
This type of iron ore could contain upto 72 per cent pure iron. It possesses magnetic property and hence is called magnetite. It is found in Andhra Pradesh, Jharkhand, Goa, Kerala, Tamil Nadu and Karnataka.
It contains 60 per cent to 70 per cent pure iron and is found in Andhra Pradesh, Jharkhand, Orissa, Chhattisgarh, Goa, Karnataka, Maharashtra and Rajasthan. This is widely used in Sponge iron and steel making.
It contains 40 per cent to 60 per cent pure iron. It is of yellow or light brown colour.
It contains many impurities and has just 40 to 50 per cent pure iron. However, due to presence of lime, it is self fluxing.