🌍 Chapter 3: Mineral and Power Resources

🪨 1. Introduction: What are Minerals?

• Definition:
  Minerals are naturally occurring substances that have a definite chemical composition and physical properties.
  Example: Iron ore, Coal, Petroleum, Bauxite etc.
• Characteristics of Minerals
  1. Naturally occurring (not man-made).
  2. Inorganic in origin.
  3. Definite chemical composition.
  4. Found in the earth’s crust.
  5. Non-renewable in nature – once exhausted, cannot be replenished easily.
• Importance of Minerals
  • Backbone of industries.
  • Provide raw materials for construction, agriculture, defence, technology.
  • Basis of industrial development of a country.

🏞️ 2. Types of Minerals

Minerals are broadly classified into two categories:

(A) Metallic Minerals

• Contain metal in raw form.
• Can be melted to extract metal.
• Good conductors of heat & electricity.

Examples: Iron, Copper, Bauxite, Manganese, Gold, Silver.

• Ferrous Minerals:
  Contain iron. E.g., Iron ore, Manganese, Nickel.
• Non-Ferrous Minerals:
  Do not contain iron. E.g., Copper, Bauxite, Lead, Gold.

(B) Non-Metallic Minerals

• Do not contain metals.
• Cannot be used to extract metals.
• Poor conductors of heat & electricity.

Examples: Limestone, Mica, Gypsum, Coal, Petroleum, Natural Gas.

🗺️ 3. Distribution of Minerals in the World

Minerals are unevenly distributed across the world.

• Iron Ore – Brazil, Australia, Russia, India.
• Petroleum – Middle East (Saudi Arabia, Iraq, Iran, Kuwait), USA, Russia.
• Coal – China, USA, India, Australia, Russia.
• Copper – Chile, USA, Peru, Zambia.
• Bauxite – Guinea, Australia, India, Jamaica.
• Gold – South Africa, Australia, Russia, Canada.

🇮🇳 4. Distribution of Minerals in India

India is rich in mineral resources.

Metallic Minerals

• Iron Ore – Odisha, Jharkhand, Chhattisgarh, Karnataka, Goa.
• Manganese – Odisha, Maharashtra, Madhya Pradesh, Karnataka.
• Copper – Rajasthan, Madhya Pradesh, Jharkhand.
• Bauxite – Odisha, Jharkhand, Gujarat, Maharashtra.

Non-Metallic Minerals

• Mica – Jharkhand, Bihar, Andhra Pradesh, Rajasthan.
• Limestone – Madhya Pradesh, Rajasthan, Andhra Pradesh, Gujarat.

Power Resources

• Coal – Jharkhand, West Bengal, Odisha, Chhattisgarh, Madhya Pradesh.
• Petroleum – Assam, Gujarat, Mumbai High (offshore drilling).
• Natural Gas – Krishna-Godavari basin, Mumbai High, Tripura.

⚡ 5. Power Resources

Power resources are of two types:

(A) Conventional Sources of Energy

• Used for a long time.
• Non-renewable in nature.

1. Coal –
   • Also called “Black Gold”.
   • Used in thermal power plants, railways, iron & steel industry.
   • Types: Anthracite (best), Bituminous, Lignite, Peat.
   • India: Jharkhand, West Bengal, Odisha, Chhattisgarh.
2. Petroleum –
   • Known as “Liquid Gold”.
   • Major producer of fuels, lubricants, chemicals, plastics.
   • India: Assam, Gujarat, Mumbai High.
3. Natural Gas –
   • Cleaner than coal & petroleum.
   • Used in power generation, fertilisers, domestic cooking.
   • India: Krishna-Godavari basin, Tripura, Mumbai offshore.
4. Hydel Power –
   • Produced by fast-flowing water.
   • Dams built on rivers.
   • India: Bhakra Nangal, Tehri Dam, Hirakud.

(B) Non-Conventional Sources of Energy

• Renewable in nature.
• Environment-friendly.

1. Solar Energy ☀️
   • Produced from Sun’s heat.
   • Used in solar cookers, heaters, solar panels.
   • India: Rajasthan, Gujarat, Tamil Nadu.
2. Wind Energy 🌬️
   • Generated using windmills.
   • India: Tamil Nadu, Gujarat, Maharashtra.
3. Biogas ♻️
   • Produced from animal waste, kitchen waste.
   • Used in rural areas for cooking, lighting.
4. Tidal Energy 🌊
   • Produced from sea tides.
   • Limited potential in India (Gulf of Kachchh).
5. Geothermal Energy 🌋
   • Produced from heat of Earth’s interior.
   • India: Himalayas, Manikaran (Himachal Pradesh).
6. Nuclear Power ☢️
   • Produced from uranium, thorium.
   • Very powerful & long-lasting.
   • India: Tarapur, Kalpakkam, Kaiga, Rawatbhata.

🌱 6. Conservation of Minerals and Power Resources

• Minerals are non-renewable, hence conservation is important.

Ways to Conserve:

1. Use alternative/renewable sources (solar, wind, biogas).
2. Recycle metals (iron, aluminium, copper).
3. Use efficient mining technology to reduce wastage.
4. Promote energy-efficient devices (LEDs, electric vehicles).
5. Reduce dependence on fossil fuels.
6. Afforestation to prevent soil erosion caused by mining.

📝 7. Important Terms

• Ore: A mineral from which metals are profitably extracted.
• Smelting: Process of extracting metal from ore by heating.
• Black Gold: Coal.
• Liquid Gold: Petroleum.

❓ 8. Practice Questions

Very Short Answer

1. Define minerals.
2. Name two ferrous and two non-ferrous minerals.
3. Which state is the largest producer of iron ore in India?
4. Why is petroleum called “liquid gold”?

Short Answer

1. Explain the difference between metallic and non-metallic minerals.
2. What are the types of coal?
3. Name two conventional and two non-conventional sources of energy.

Long Answer

1. Explain the distribution of minerals in India.
2. Describe the importance of non-conventional energy resources.
3. How can minerals and power resources be conserved?