A mineral is a naturally occurring substance of definite chemical composition and identifiable physical properties. An ore is a mineral or combination of minerals from which a useful substance, such as a metal, can be extracted and used to manufacture various useful goods. Minerals are formed over a period of millions of years in the earth’s crust. These are nonrenewable resources important for modern civilization. The minerals of India are unevenly distributed and are localized in few areas. More than 90% of our mineral wealth is concentrated in Chotta Nagpur Plateau region. Minerals are obtained from the earth through the process of mining. Mining operations progress through four stage
Last modified: Wednesday, 28 December 2011, 8:17 AM
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