Minerals And Energy Resources

A mineral is a natural substance of organic or inorganic origin with definite chemical and physical properties.

Minerals are important because they provide raw materials for industries, energy production, transport, construction, defence, electricity generation and modern technology.

India has many mineral resources, but they are not equally distributed across the country.

Some regions are rich in coal, iron ore, manganese, bauxite and mica, while other regions have petroleum, natural gas, limestone, uranium, thorium or beach sand minerals.

Types Of Mineral Resources

On the basis of chemical and physical properties, minerals are grouped into:

• Metallic minerals
• Non-metallic minerals

Metallic Minerals

Metallic minerals are sources of metals.

Examples include:

• Iron ore
• Copper
• Gold

Metallic minerals are further divided into:

• Ferrous minerals
• Non-ferrous minerals

Ferrous Minerals

Ferrous minerals contain iron.

Example:

• Iron ore

These minerals are extremely important for iron and steel industries.

Non-Ferrous Minerals

Non-ferrous minerals do not contain iron.

Examples include:

• Copper
• Bauxite
• Lead
• Zinc
• Gold
• Silver

Non-Metallic Minerals

Non-metallic minerals may be organic or inorganic in origin.

Organic Non-Metallic Minerals

These are derived from buried plant and animal life.

They are also called fossil fuels or mineral fuels.

Examples include:

• Coal
• Petroleum

Inorganic Non-Metallic Minerals

These are not derived from plant or animal remains.

Examples include:

• Mica
• Limestone
• Graphite

Important Features Of Minerals

Minerals have some common features:

• They are unevenly distributed over space.
• Good quality minerals are usually less in quantity than low quality minerals.
• There is an inverse relationship between quality and quantity.
• All minerals are exhaustible over time.
• Minerals take a very long time to develop geologically.
• They cannot be replenished immediately when needed.

Mineral Belts And Their Location

India has several important mineral belts.

These belts are rich in different types of minerals and are linked with India’s geological structure.

Mineral Belts Of India

Mineral Belt	Location	Major Minerals
North-Eastern Belt	Chhota Nagpur Plateau and Odisha Plateau	Coal, iron ore, manganese, mica, bauxite, copper, kyanite, chromite, beryl, apatite
Central Belt	Jharkhand, West Bengal and Odisha	Manganese, bauxite, uranium, limestone, marble, coal, gems, mica, graphite
Peninsular Belt	Chhattisgarh, Andhra Pradesh, Madhya Pradesh, Maharashtra Plateau and Karnataka	Ferrous minerals, bauxite, gold, chromite, lead, zinc, ilmenite
Southern Belt	Tamil Nadu, Kerala and Goa	Iron ore, garnet, monazite sand, clay, ilmenite, soapstone
North-Western Belt	Rajasthan and Gujarat along Aravalli Range	Non-ferrous minerals, uranium, mica, beryllium, aquamarine, petroleum, gypsum, emerald

Ferrous Minerals

Ferrous minerals are minerals containing iron.

They form the base of the iron and steel industry.

The most important ferrous minerals in this chapter are:

• Iron ore
• Manganese

Iron Ore

India has the largest reserve of iron ore in Asia.

India is also mentioned as the fifth largest exporter of iron in the world.

Iron ore is used for manufacturing many things, from safety pins to ships.

It is often mixed with materials such as:

• Lime
• Magnesium
• Phosphorus
• Silicon

Types Of Iron Ore

The chapter mentions four important types of iron ore:

• Hematite
• Magnetite
• Limonite
• Siderite

Hematite

Hematite is also called red ochre because it is reddish in colour.

Features Of Hematite

• Iron content ranges from about 60 to 70 per cent.
• Most of India’s iron ore reserves belong to this type.
• It is one of the most important iron ores in India.

Magnetite

Magnetite is the best quality iron ore.

Features Of Magnetite

• It contains more than 70 per cent iron.
• It is dark brown to blackish in colour.
• It is also called black ore.
• It has magnetic properties.

Limonite

Limonite is yellow or light brown in colour.

Features Of Limonite

• Iron content ranges from about 40 to 60 per cent.
• It is called hydrated iron oxide when iron ore is mixed with oxygen and water.
• Its mining is easier and cheaper.

Siderite

Siderite is an inferior variety of iron ore.

Features Of Siderite

• It has many impurities.
• Iron content ranges from about 20 to 40 per cent.
• It is also called iron carbonate.

Iron Ore Types At A Glance

Iron Ore Type	Colour / Nature	Iron Content	Key Feature
Hematite	Reddish	60 to 70 per cent	Most Indian reserves belong to this type
Magnetite	Dark brown to blackish	More than 70 per cent	Best quality, magnetic
Limonite	Yellow or light brown	40 to 60 per cent	Hydrated iron oxide, easier mining
Siderite	Impure ore	20 to 40 per cent	Iron carbonate

Manganese

Manganese is another important ferrous mineral.

India is the world’s fifth largest producer of manganese ore.

India also has the second largest ore reserves in the world after Zimbabwe.

Uses Of Manganese

Manganese is a black, hard, iron-like metal.

It is used:

• As an important raw material for smelting iron ore.
• For manufacturing ferrous alloys.
• For making bleaching powder.
• For making insecticides.
• For making paints.
• For making glazed pottery.
• For making matches.
• For making batteries.
• For making china clay.

Distribution Of Manganese

Manganese is mainly associated with the Dharwar system.

Odisha is the leading producer of manganese.

Major mines in Odisha are located in the central part of India’s iron ore belt, especially in:

• Bonai
• Kendujhar
• Sundergarh
• Gangpur
• Koraput
• Kalahandi
• Bolangir

Karnataka is another major producer.

Important manganese mining areas in Karnataka include:

• Dharwar
• Bellary
• Belgaum
• North Canara
• Chikmagalur
• Shimoga
• Chitradurga
• Tumkur

Minor producers include:

• Maharashtra
• Madhya Pradesh
• Andhra Pradesh
• Goa
• Jharkhand

Non-Ferrous Minerals

India has limited reserves of non-ferrous minerals except bauxite.

Important non-ferrous minerals include:

• Copper
• Bauxite
• Gold
• Silver
• Tungsten
• Nickel
• Cobalt
• Lead
• Zinc

Copper

Copper is an important non-ferrous mineral.

Uses Of Copper

Copper is used for:

• Making utensils.
• Making coins.
• Electrical industry.
• Making wires.
• Electric motors.
• Transformers.
• Generators.

Distribution Of Copper

Important copper-producing areas are:

• Singhbhum district in Jharkhand.
• Balaghat district in Madhya Pradesh.
• Jhunjhunu and Alwar districts in Rajasthan.

Bauxite

Bauxite is the main ore of aluminium.

Aluminium is useful because of its:

• Lightness.
• Strength.
• Malleability.
• Ductility.
• Heat conductivity.
• Electrical conductivity.
• Resistance to atmospheric corrosion.

Distribution Of Bauxite

Bauxite is mainly found in tertiary deposits and is associated with laterite rocks.

Odisha is the leading producer of bauxite.

Important producing areas include:

• Kalahandi in Odisha.
• Sambalpur in Odisha.
• Jharkhand.
• Gujarat.
• Chhattisgarh.
• Madhya Pradesh.
• Maharashtra.

Other important deposits:

• Bhavnagar and Jamnagar in Gujarat.
• Amarkantak Plateau in Chhattisgarh.
• Katni-Jabalpur area and Balaghat in Madhya Pradesh.

Lead

Lead occurs as a cubic sulphide known as Galena.

Distribution Of Lead

Lead occurs in:

• Himalayas
• Tamil Nadu
• Rajasthan
• Andhra Pradesh
• Jharkhand

Rajasthan is the leading producer of lead.

The chapter notes that about 75 per cent of Indian requirements are met by imports, mainly from:

• Australia
• Canada
• Myanmar

Zinc

Zinc is often found with lead as a mixed ore.

Uses Of Zinc

Zinc is used:

• For alloying.
• For manufacturing galvanised sheets.
• In dry batteries.
• In white pigments.

Gold

Gold is a valuable non-ferrous mineral.

Distribution Of Gold

Main gold fields in India are:

• Kolar Gold Field – known as one of the deepest in the world.
• Hutti Gold Field – Raichur district, Karnataka.
• Ramgiri Gold Field – Anantapur district, Andhra Pradesh.

Alluvial gold is obtained from sands of the Subarnarekha River in Jharkhand.

Such deposits are called placer deposits.

The process of recovering gold from these deposits is called panning.

Silver

India has limited resources of silver ore.

Uses Of Silver

Silver is used in:

• Manufacture of chemicals.
• Electroplating.
• Photography.
• Colouring glass.

Distribution Of Silver

The majority of silver production comes from the Zawar mines in the Udaipur district of Rajasthan.

Non-Metallic Minerals

Important non-metallic minerals in the chapter include:

• Mica
• Limestone
• Dolomite

Mica

Mica is mainly used in electrical and electronic industries.

It can be split into very thin sheets which are tough and flexible.

Distribution Of Mica

Rajasthan has the largest deposits of mica.

Mica is produced in:

• Hazaribagh Plateau of Jharkhand.
• Nellore district of Andhra Pradesh.
• Bhilwara and Udaipur in Rajasthan.
• Tamil Nadu.
• Karnataka.
• West Bengal.
• Madhya Pradesh.

India has near monopoly in mica production and produces about 60 per cent of the world’s total production.

Limestone

Limestone is used for many purposes.

Uses Of Limestone

It is used in:

• Cement industry.
• Iron and steel industry.
• Chemical industry.

Distribution Of Limestone

Limestone is produced in:

• Madhya Pradesh
• Rajasthan
• Andhra Pradesh
• Gujarat
• Chhattisgarh
• Tamil Nadu

Madhya Pradesh is the largest producer of limestone in India.

Dolomite

Limestone with more than 10 per cent magnesium is called dolomite.

When the magnesium percentage rises to about 45 per cent, it is called true dolomite.

Uses Of Dolomite

Dolomite is chiefly used:

• In metallurgical activities.
• As refractories.
• As blast furnace flux.
• As a source of magnesium salts.
• In fertiliser industry.
• In salt industry.

Distribution Of Dolomite

Major producers are:

• Odisha
• Chhattisgarh
• Andhra Pradesh
• Jharkhand
• Rajasthan
• Karnataka

Odisha is the largest producer of dolomite.

Atomic Minerals

Atomic minerals are important for nuclear power generation.

The main atomic minerals are:

• Uranium
• Thorium

Other atomic minerals include:

• Beryllium
• Lithium
• Zirconium

Uranium

Uranium deposits occur in:

• Singhbhum district of Jharkhand.
• Hazaribagh district of Jharkhand.
• Gaya district of Bihar.
• Sedimentary rocks in Saharanpur district of Uttar Pradesh.

The largest source of uranium comprises monazite sands, both beach and alluvial.

The largest concentration of monazite sand is on the Kerala coast.

Some uranium is also found in copper mines of Udaipur in Rajasthan.

India produces about 2 per cent of the world’s uranium reserves.

Thorium

Thorium is also derived from monazite.

Monazite contains about 10 per cent thorium.

Thorium Producing Areas

Important producers include:

• Kerala
• Bihar
• Jharkhand
• Tamil Nadu
• Rajasthan

Energy Sources

Energy sources are divided into:

• Conventional energy sources
• Non-conventional energy sources

Conventional Non-Renewable Energy

These are mostly fossil fuels found underground.

Examples include:

• Coal
• Oil
• Natural gas

Conventional Renewable Energy

These are mostly non-fossil fuels found above ground.

Examples include:

• Firewood
• Cattle dung
• Vegetable wastes
• Wood charcoal

Non-Conventional Energy Sources

The chapter lists the following non-conventional energy sources:

• Solar energy
• Hydropower
• Wind energy
• Nuclear energy
• Hydrogen energy
• Geothermal energy
• Biogas
• Tidal energy
• Biofuel

Coal

Coal is one of the most important energy resources.

It is known as black gold and buried sunshine.

Coal is classified on the basis of carbon content.

The four main types of coal are:

• Peat
• Lignite
• Bituminous
• Anthracite

Peat

Peat is the first stage of coal formation.

Features Of Peat

• It has a high percentage of moisture.
• It has high volatile matter.
• Carbon content is less than 40 per cent.
• Its low heating capacity reduces its value as an industrial fuel.

Lignite

Lignite is the next stage of coal formation after peat.

It is also known as brown coal.

Features Of Lignite

• It is soft but more compact than peat.
• Carbon content is 40 to 60 per cent.
• It has a large percentage of moisture.
• It has less combustible matter.

Distribution Of Lignite In India

Lignite is mostly found in:

• Rajasthan
• Tamil Nadu
• Assam
• Jammu and Kashmir

The chapter’s question section highlights Neyveli in Tamil Nadu as the location of the largest lignite deposits.

Bituminous Coal

Bituminous coal is a hard and compact variety of coal.

Features Of Bituminous Coal

• Carbon content is 60 to 80 per cent.
• Almost 80 per cent of the world’s coal output is bituminous.
• Coke from this coal is mainly used in the iron and steel industry.

Distribution Of Bituminous Coal

Bituminous coal is found in:

• Jharkhand
• Odisha
• West Bengal
• Madhya Pradesh
• Chhattisgarh

Anthracite

Anthracite is the hardest and best quality coal.

Features Of Anthracite

• Carbon content is 80 to 90 per cent.
• It has almost no volatile matter.
• Only about 5 per cent of the world’s total coal is anthracite.
• In India, it is found only in Jammu and Kashmir in very small quantity.

Coal Types At A Glance

Coal Type	Carbon Content	Main Feature
Peat	Less than 40 per cent	First stage, high moisture, low heating value
Lignite	40 to 60 per cent	Brown coal, soft but compact
Bituminous	60 to 80 per cent	Hard, compact, most common world output
Anthracite	80 to 90 per cent	Hardest and best quality

Important Coal Regions Of India

The Gondwana coalfields of India are located in the Damodar Valley.

They lie in the Jharkhand-Bengal coal belt.

Important coalfields in this region include:

• Raniganj
• Jharia
• Bokaro
• Giridih
• Karanpura

Other river valleys associated with coal are:

• Godavari
• Mahanadi
• Son

Important Coal Mining Centres

Important coal mining centres include:

• Singrauli in Madhya Pradesh, with part of the field in Uttar Pradesh.
• Korba in Chhattisgarh.
• Talcher in Odisha.
• Rampur in Odisha.
• Chanda-Wardha in Maharashtra.
• Kamptee in Maharashtra.
• Bander in Maharashtra.
• Singareni in Andhra Pradesh.
• Pandur in Andhra Pradesh.

The chapter’s question section lists Chhattisgarh as the largest coal-producing state.

Petroleum

Crude petroleum consists of hydrocarbons in liquid and gaseous states.

Petroleum deposits are found only in sedimentary rock basins of marine origin.

However, all sedimentary rocks do not contain mineral oil.

Potential Petroleum Reserves

Potential petroleum reserve areas include:

• Terai zone running parallel to the Himalayas from Jammu and Kashmir to Assam.
• River basins of Ganga and Sutlej.
• Deltaic tracts of Ganga, Mahanadi, Godavari, Krishna and Kaveri.
• Continental shelf along the Western Coast.
• Gulf of Cambay.
• Islands in the Arabian Sea and Bay of Bengal.
• Exploratory wells in Krishna-Godavari and Kaveri basins on the east coast.

Important Petroleum And Gas Pipelines

Important pipelines mentioned in the chapter are:

• Naharkatia-Nunmati-Barauni Pipeline.
• Mumbai High-Mumbai-Ankaleshwar-Koyali Pipeline.
• Salaya-Koyali-Mathura Pipeline.
• Hajira-Bijapur-Jagdishpur, or HBJ, Gas Pipeline.
• Jamnagar-Loni LPG Pipeline.
• Kandla-Bhatinda Pipeline.

The chapter’s question section mentions Mumbai High as the largest producer of crude oil in India.

Natural Gas

Natural gas is often found dissolved in oil or as a gas cap above oil.

Sometimes, pressure of natural gas forces oil up to the surface.

Such natural gas is called associated gas or wet gas.

Types Of Natural Gas

Associated Gas Or Wet Gas

This gas is found with oil.

It may be dissolved in oil or present as a gas cap above oil.

Non-Associated Gas Or Dry Gas

Some reservoirs contain gas and no oil.

This gas is called non-associated gas or dry gas.

Sour Gas

Some natural gas contains substantial quantities of hydrogen sulphide or other organic sulphur compounds.

Such gas is called sour gas.

Coalbed Methane Or Sweet Gas

Coalbed methane is called sweet gas because it lacks hydrogen sulphide.

Distribution Of Natural Gas

Exclusive reserves have been located along:

• Eastern coast – Tamil Nadu, Odisha and Andhra Pradesh.
• Tripura.
• Rajasthan.
• Offshore wells in Gujarat and Maharashtra.

Other important locations include:

• KG Basin.
• Assam.
• Gulf of Khambhat.
• Cuddalore district of Tamil Nadu.
• Barmer in Rajasthan.

The main component of CNG is methane.

Important Exam Facts From The Chapter

The chapter’s question section gives several exam-oriented facts:

• Coal is known as black gold.
• Coal is also known as buried sunshine.
• Chhattisgarh is listed as the largest coal-producing state.
• India is the leading producer of mica in the world.
• Gypsum is used in the production of cement.
• Kudremukh mines in Karnataka are famous for iron ore.
• Mumbai High is listed as the largest producer of crude oil in India.
• Assam is listed as the state with the largest reserves of natural gas.
• Bauxite is the main ore of aluminium.
• Jaduguda in Jharkhand is linked with the bulk of uranium in India.
• Damodar Valley is rich in coal.
• Iron ore is a ferrous mineral.
• Rat-hole mining in Meghalaya is associated with coal.
• Tehri Dam is listed as the largest hydroelectric power station in India.
• Biomass energy is produced by using animal and plant waste.
• Tamil Nadu is listed as the largest producer of wind energy in India.
• Sanchi is listed as the Solar City of India.
• Neyveli, Tamil Nadu has the largest lignite deposits.
• Tidal energy is not a conventional energy source.
• Odisha is the largest producer of manganese.
• Blue Flame Revolution is associated with LPG connections.
• China is listed as the largest producer of solar power in the world as of 2025.
• Madhya Pradesh is listed as the largest copper-producing state in India.
• Thorium and uranium are used in nuclear power generation.
• Bauxite is mainly obtained through open-cast mining.
• Vindhyachal in Madhya Pradesh is listed as the largest thermal power station in India.
• Tidal energy projects in India are mainly located in Gujarat and West Bengal.
• Wind energy is an example of renewable energy.
• The USA is listed as the largest producer of petroleum in the world as of 2025.

Minerals And Energy Resources At A Glance

Topic	Key Fact
Mineral	Natural substance with definite chemical and physical properties
Main mineral types	Metallic and non-metallic
Metallic minerals	Sources of metals
Ferrous minerals	Contain iron
Non-ferrous minerals	Do not contain iron
Organic non-metallic minerals	Coal and petroleum
Inorganic non-metallic minerals	Mica, limestone, graphite
Major mineral belts	North-Eastern, Central, Peninsular, Southern, North-Western
Best iron ore	Magnetite
Most Indian iron ore reserves	Hematite
Inferior iron ore	Siderite
Leading manganese producer	Odisha
Main ore of aluminium	Bauxite
Largest mica deposits	Rajasthan
Largest limestone producer	Madhya Pradesh
Largest dolomite producer	Odisha
Main atomic minerals	Uranium and thorium
Largest monazite concentration	Kerala coast
Coal types	Peat, lignite, bituminous, anthracite
Highest quality coal	Anthracite
Gondwana coalfields	Damodar Valley
Petroleum rocks	Sedimentary rock basins of marine origin
Main component of CNG	Methane

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