Minerals are naturally occurring substances found in the Earth's crust that have a definite chemical composition and physical properties. Minerals are the basic raw materials of modern industry and are essential for the economic development of a country. Energy resources, both conventional and non-conventional, provide the power that runs industries, transports and homes. The distribution of minerals and energy resources in India is uneven, and their exploitation and conservation are vital for the country's development.
Minerals are classified into metallic minerals and non-metallic minerals. Metallic minerals, such as iron ore, manganese, bauxite, copper and gold, contain metals and are further divided into ferrous minerals (those containing iron) and non-ferrous minerals. Non-metallic minerals, such as coal, limestone, mica, salt and petroleum, do not contain metals. Energy minerals such as coal and petroleum are the most important non-metallic minerals because they provide the fuel for industry and transport.
Iron ore is the most important metallic mineral of India, and India has one of the largest reserves of iron ore in the world. The major iron ore belts of India are the Odisha-Jharkhand belt, the Durg-Bastar-Chandrapur belt in Chhattisgarh and Maharashtra, the Bellary-Chitradurga-Chikmagalur belt in Karnataka and the Ratnagiri-Goa belt. The haematite and magnetite varieties of iron ore are the most important, and the ore is exported to Japan, South Korea and other countries and used by the Indian steel industry.
Manganese is used in the manufacture of steel and in the making of dry batteries, and its major deposits are in Odisha, Madhya Pradesh and Maharashtra. Bauxite, the ore of aluminium, is found in the Amarkantak plateau, the Gujarat plains and the eastern ghats, and aluminium is a light metal used in aircraft and utensils. Copper, used in the electrical and defence industries, is found in the Singhbhum district of Jharkhand and the Khetri mines of Rajasthan. Gold is found in the Kolar gold fields of Karnataka and the Hutti gold mines.
Coal is the most important non-metallic mineral and the primary source of energy in India. Coal is found mainly in the Gondwana rock system of the peninsular India, and the major coalfields are the Damodar valley coalfields (Jharkhand and West Bengal), the Jharia coalfield, the Bokaro coalfield and the Raniganj coalfield. The tertiary coalfields of Assam, Meghalaya and Nagaland are younger and of lower grade. Coal is used in the iron and steel industry, for power generation and as a domestic fuel.
Petroleum is the most valuable mineral fuel, used for petrol, diesel, kerosene and petrochemicals. The major oil fields of India are in the Mumbai High offshore field in the Arabian Sea, the Assam oil fields of Digboi and Naharkatia, and the Ankleshwar and Kalol fields of Gujarat. Natural gas is found along with petroleum and is used as a clean fuel and for the production of fertilisers and petrochemicals. Limestone, used in the cement and iron and steel industries, and mica, used in the electrical industry, are other important non-metallic minerals of India.
Energy resources are classified into conventional and non-conventional sources. The conventional sources of energy in India are coal, petroleum, natural gas, firewood and electricity from hydropower. Coal provides the largest share of India's commercial energy, followed by petroleum and natural gas. Firewood, dung cake and agricultural waste are the traditional sources of energy used in rural areas, and they form the non-commercial sources of energy. The growing consumption of commercial energy is an indicator of the economic development of India.
The non-conventional sources of energy are solar energy, wind energy, tidal energy, geothermal energy, biogas and nuclear energy. India has a high potential for solar energy, and the solar power plants at Madhapur, Jaipur and other places generate electricity from the sun. Wind energy is harnessed by the wind farms of Tamil Nadu, Gujarat and Maharashtra, and India ranks among the leading countries in wind power generation. Nuclear energy is produced in the power plants at Tarapur, Kalpakkam, Narora and Kakrapar using uranium and thorium.
The distribution of minerals and energy resources in India is uneven. The eastern and central parts of India, including Jharkhand, Odisha, Chhattisgarh, West Bengal and Madhya Pradesh, are rich in coal, iron ore and other minerals, while the northwestern parts of the country are poor in minerals. The mineral belt of the Chhota Nagpur plateau is the richest mineral region of India. The development of minerals is concentrated where the reserves are large and the transport facilities are good.
Minerals are non-renewable resources, which means they cannot be replaced once they are exhausted. The conservation of minerals and energy is therefore essential. The measures for conservation include the efficient use of minerals, the reduction of wastage in mining, the recycling of metals, the development of non-conventional sources of energy and the use of energy-saving technologies. The sustainable development of mineral and energy resources is essential for the future of India.
| Category | Minerals |
|---|---|
| Metallic - Ferrous | Iron ore, manganese |
| Metallic - Non-ferrous | Bauxite, copper, gold |
| Non-Metallic | Coal, petroleum, limestone, mica |
| Energy Minerals | Coal, petroleum, natural gas |
| Type | Sources |
|---|---|
| Conventional | Coal, petroleum, natural gas, firewood, hydropower |
| Non-Conventional | Solar, wind, tidal, geothermal, biogas, nuclear |
Minerals and energy resources are the foundation of India's industrial and economic development. The metallic minerals such as iron ore, manganese, bauxite and copper, and the non-metallic minerals such as coal, petroleum, limestone and mica, are concentrated mainly in the eastern and central parts of the country, especially in the Chhota Nagpur plateau. Coal provides the largest share of India's commercial energy, while the non-conventional sources such as solar, wind and nuclear energy are growing rapidly as sustainable alternatives. Since minerals are non-renewable, their conservation through efficient use, recycling and the development of renewable energy is essential for the sustainable development of the country.
Keywords: Minerals, metallic minerals, non-metallic minerals, iron ore, coal, petroleum, conventional energy, non-conventional energy, nuclear energy.