Mineral & Energy Resources – NDA Geography Notes

India is rich in minerals. The Peninsular Plateau, formed from ancient Gondwana rocks, holds vast deposits of coal, iron ore, manganese, bauxite, copper, and mica. The northeastern plateau region and the northwestern region also have important minerals. Energy resources power India’s industries, homes, and transport, using both conventional sources (coal, petroleum, natural gas, nuclear) and non-conventional sources (solar, wind, hydel, tidal, geothermal).

NDA tests this chapter frequently through mineral-location matching, coal field questions, oil refinery sequences, and nuclear power plant locations. These questions reward students who have worked carefully with a map of India’s resources.

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Types of Minerals

Ferrous minerals contain iron : examples: iron ore, manganese, nickel, cobalt.

Non-ferrous minerals do not contain iron : examples: copper, bauxite (aluminium ore), lead, zinc, gold, silver.

Non-metallic minerals are not metals: examples: mica, limestone, gypsum, graphite, salt.

Energy minerals are used as fuel: examples: coal, petroleum, natural gas, uranium.

The spatial distribution of minerals in India is uneven. Most minerals are concentrated in the Peninsular Plateau. The Himalayan region is poor in minerals. Since colonial times, India’s mining industry has been export-oriented.

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Iron Ore

Iron ore is India’s most important metallic mineral, the raw material for steel.

Types of iron ore from best to poorest quality: Magnetite → Hematite → Limonite → Siderite. [NDA 2008-II]

Magnetite is the best quality: 60–70% pure iron, black in colour, and possesses magnetic properties. All three of these facts about magnetite are correct. [NDA 2017-II] Hematite is second best: reddish in colour, most widely found in India.

Iron Ore Location	State	Notes
Bailadila	Chhattisgarh	Major iron ore mine; iron ore exported to Japan [NDA 2023-II]
Keonjhar (Mayurbhanj)	Odisha	Important iron ore area
Badampahar	Odisha	Iron ore
Durg-Bastar-Chandrapur belt	Chhattisgarh / MP	Important belt
Kudremukh	Karnataka	Iron ore (NOT bauxite) [NDA 2023-II]
Bellary-Hospet	Karnataka	Major iron ore region
Singhbhum	Jharkhand	Iron and copper

Zawar (Rajasthan) = Zinc mine: NOT iron ore. [NDA 2015-II | NDA 2023-II]

Kudremukh = Iron Ore: NOT Bauxite. [NDA 2023-II]

Anantpur (AP) = Gold area: NOT iron ore.

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Manganese

Manganese is used in steel manufacturing (to make steel hard and tough) and in dry cell batteries. Leading producer of manganese in India = Karnataka. [NDA 2023-I] Other important states: Odisha, Maharashtra, MP, Goa. Key locations: Shimoga (Karnataka), Balaghat (MP).

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Bauxite (Aluminium Ore)

Bauxite is the ore from which aluminium is extracted. Major producing states: Odisha and Madhya Pradesh are the top two. Other states include Jharkhand, Maharashtra, Gujarat, and Chhattisgarh. Key location: Kolhapur (Maharashtra). [NDA 2006-II]

Ratnagiri bauxite area is in Maharashtra, NOT in Karnataka. [NDA 2015-I]

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Copper

India is comparatively NOT rich in copper. Unlike bauxite, iron, and manganese, which are found in large quantities, India imports significant copper to meet industrial demand. [NDA 2007-II]

Major copper areas: Singhbhum (Jharkhand): main copper mining area; Balaghat (Madhya Pradesh); Ghatsila (Jharkhand); Khetri (Rajasthan): Khetri copper mine; Malanjkhand (MP).

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Zinc, Lead, and Gold

Zinc: Zawar mines (Udaipur, Rajasthan) is India’s most important zinc-lead deposit. [NDA 2015-II | NDA 2023-II]

Gold: Kolar Gold Fields (KGF) in Karnataka: famous gold mines, now largely exhausted. Hutti gold mines, Raichur, Karnataka: still producing. Anantpur district: gold fields in Andhra Pradesh.

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Mica

Mica is a non-metallic mineral used mainly in electrical and electronic industries, because it is an excellent insulator of electricity. [NDA 2023-I]

Major mica belt: Jharkhand (Koderma, Giridih): largest producer; Andhra Pradesh (Nellore): second largest; Rajasthan (Bhilwara, Ajmer). [NDA 2006-II]

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Other Important Minerals

Mineral	State	Location/ Note
Gypsum	Rajasthan / Karnataka	[NDA 2011-II]
Limestone	Rajasthan	Largest producer; used for cement [NDA 2011-II]
Magnesite	Uttarakhand	[NDA 2011-II
Graphite	Odisha	[NDA 2017-I]
Fluorspar	Rajasthan	[NDA 2017-I]
Nickel	Odisha	[NDA 2017-I]
Chromite	Odisha	—
Lignite	Tamil Nadu	Neyveli mines: used in thermal power

Key place-mineral matching [NDA 2017-I]: Lakwa = Petroleum (Assam) | Malanjkhand = Copper (MP) | Kalakot = Coal (J&K : Himalayan region) | Zawar = Zinc (Rajasthan)

Mineral-location matching [NDA 2006-II]: Bauxite = Kolhapur (Maharashtra) | Iron = Mayurbhanj (Odisha) | Manganese = Shimoga (Karnataka) | Mica = Nellore (Andhra Pradesh)

Vindhyan system of rocks is important for precious stones and building materials (sandstone, limestone, diamonds) : NOT for iron ore, bauxite, or copper.

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Coal

Coal is India’s most important energy resource, providing about 50% of India’s commercial energy.

Types of coal from best to worst quality: Anthracite → Bituminous → Lignite → Peat

Anthracite = hardest, highest carbon content, cleanest burning; rare in India. Bituminous = most common in India; used in iron and steel (coking coal) and thermal power. Lignite = brown coal; lower quality; found in Tamil Nadu (Neyveli). Peat = lowest grade, partially formed coal.

The Gondwana Coal Fields

Most of India’s coal is found in the Gondwana rock system of the Peninsular Plateau: Damodar Valley (Jharkhand/WB), Sone Valley, Mahanadi Valley, Godavari Valley.

The Damuda Series of the Gondwana system has three stages:

Barakar (bottom): contains coal. Barren Measures (middle): contains neither coal nor iron; called “Barren” for this reason. [NDA 2012-I] Raniganj (top): contains coal.

Most coal and ferrous minerals in India occur in the Peninsula, south of the Vindhyas. This region was once part of Gondwana.

Coal Reserves and Major Fields

Proved coal reserves: decreasing order: Jharkhand → Chhattisgarh → Odisha → West Bengal. [NDA 2019-I]

Coal Field	State
Jharia	Jharkhand
Bokaro	Jharkhand
Dhanbad	Jharkhand
Raniganj	West Bengal
Talcher	Odisha
Korba	Chhattisgarh
Singrauli	MP / UP
Singareni	Telangana
Adilabad	Telangana
Neyveli	Tamil Nadu (lignite)

Coal field-state matching [NDA 2008-I]: Jharia = Jharkhand | Raniganj = West Bengal | Talcher = Odisha | Korba = Chhattisgarh

Coal mines East to West [NDA 2012-I]: Raniganj (WB, easternmost) → Bokaro (Jharkhand) → Bishrampur (Chhattisgarh) → Adilabad (Telangana, most southwest)

Kalakot coal field is in the Himalayan Mountain region (J&K): a Tertiary coal field, different from the Gondwana coal fields of peninsular India. [NDA 2017-II]

Oldest government-owned coal mining company = Singareni Collieries Company Limited (Telangana).

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Petroleum (Oil) and Oil Refineries

India has limited petroleum reserves. Oil is found in anticlinal structures, dome-shaped rock structures where oil and gas are trapped under impermeable rock.

Offshore: Bombay High (Arabian Sea, offshore Mumbai): India’s largest oil-producing area. Krishna-Godavari Basin (Bay of Bengal).

Onshore: Assam (Digboi, Naharkatiya, Moran): India’s oldest oil fields. Gujarat (Ankleshwar, Kalol, Khambhat). Rajasthan (Barmer: recent discovery).

Ledo is NOT an oil field. It is a town near coal mines in Assam. [NDA 2015-II]

Oil Refineries

Refinery	State	Note
Digboi	Assam	Oldest oil refinery in India (and Asia)
Guwahati	Assam	—
Bongaigaon	Assam	—
Numaligarh	Assam	—
Barauni	Bihar	—
Haldia	West Bengal	—
Mathura	Uttar Pradesh	—
Panipat	Haryana	—
Koyali (Vadodara)	Gujarat	—
Jamnagar	Gujarat	—
Kochi	Kerala	—
Chennai	Tamil Nadu	—
Mangalore	Karnataka	—
Trombay (HPCL)	Maharashtra	—
Tatipaka	Andhra Pradesh	[NDA 2021-I]

Tatipaka oil refinery is NOT in Assam. It is in Andhra Pradesh (East Godavari district). The four Assam refineries are Digboi, Guwahati, Bongaigaon, and Numaligarh. [NDA 2021-I]

Sequence of refineries by time of establishment (earliest first) [NDA 2014-II]: Guwahati → Barauni → Haldia → Mathura

Sequence West to East: Koyali → Mathura → Haldia → Bongaigaon

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Natural Gas

Natural gas is increasingly important in India, for cooking (LPG), power generation, and as a cleaner fuel. In a thermal power station, fuels (coal, oil, or natural gas) are burned to heat water and produce steam, which turns a turbine to generate electricity.

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Nuclear Energy

Nuclear power generates electricity by splitting uranium atoms (fission). India has a three-stage nuclear programme.

Nuclear Power Plants

Plant	State	Note
Tarapur	Maharashtra	India’s first nuclear power plant; largest capacity [NDA 2006-I]
Rawatbhata	Rajasthan	Near Kota [NDA 2008-I]
Narora	Uttar Pradesh	[NDA 2006-I]
Kakrapar	Gujarat	—
Kaiga	Karnataka	—
Kalpakkam	Tamil Nadu	[NDA 2006-I]
Kudankulam	Tamil Nadu	—
Gorakhpur	Haryana	Under construction

Installed capacity (increasing order): Rawatbhata → Narora → Kaiga → Tarapur.

Heavy water plants: Located at Narora, Kakrapar, and Kota (Rajasthan). Sriharikota does NOT have a heavy water plant; it is a rocket-launching station.

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Classification of Energy Resources

Category	Example	PYQs
Basic inexhaustible resource	Solar energy	[NDA 2017-I]
Conventional non-renewable resource	Coal	[NDA 2017-I]
Non-conventional renewable resource	Hydel power	[NDA 2017-I]
Non-conventional non-renewable resource	Natural gas	[NDA 2017-I]

Renewable energy can be obtained from Biomass. Biomass (plant material, animal waste) is renewable because plants can be regrown. Fossils, radioactive elements, and natural gas are NOT renewable.Prerequisites for a Thermal Power Station [NDA 2018-I]: Availability of fossil fuels (YES: coal/oil/gas needed); proximity to a river, lake, or sea (YES: cooling water needed); good transport network (YES: to bring coal and equipment). Proximity to an urban centre is NOT essential. Many thermal plants are in remote areas near coal mines.

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