Why this chapter matters for UPSC: India's mineral distribution map is mandatory for GS1 geography. Energy policy — solar targets, nuclear programme, coal dependence — is a recurring GS3 theme. The three-stage nuclear programme, India's thorium reserves, and oil field locations (Digboi, Mumbai High, KG Basin) appear directly in Prelims.

PART 1 — Quick Reference Tables

Mineral Major Producing States Key Locations UPSC Note
Iron Ore Odisha, Jharkhand, Chhattisgarh, Goa, Karnataka Keonjhar, Sundargarh, Singhbhum, Bastar India 4th largest iron ore reserve; 2nd largest steel producer (2023)
Coal Jharkhand, West Bengal, Odisha, Chhattisgarh, MP Jharia (largest), Raniganj (oldest), Singrauli Gondwana coalfields (90%+); Tertiary coal (NE, limited)
Petroleum Assam, Gujarat, Mumbai Offshore Digboi (oldest, 1889), Mumbai High (largest), Ankleshwar, KG Basin Digboi = India's oldest oil refinery (1901)
Bauxite Odisha, Gujarat, Jharkhand, Maharashtra Koraput, Kalahandi, Amarkantak Odisha = largest reserves; raw material for aluminium
Copper Rajasthan, Jharkhand, MP Khetri (largest mine), Singhbhum, Malanjkhand India is net importer; Khetri = "Copper City of India"
Mica Jharkhand, Rajasthan, AP Hazaribagh, Ajmer, Nellore belt India was world's largest exporter of sheet mica
Gold Karnataka Kolar Gold Fields (near exhausted), Hutti (Raichur, still active) KGF — once among world's deepest mines
Uranium Jharkhand, AP, Meghalaya Jaduguda, Tummalapalle (large deposit) DAE controls; used in PHWR reactors
Thorium Kerala, Tamil Nadu Monazite sand — Chavara, Manavalakurichi India has ~25% of world's thorium reserves
Manganese Odisha, Karnataka, MP, Maharashtra Balaghat, Sandur Used in steel making and batteries
Limestone MP, Rajasthan, Andhra Pradesh, Gujarat Kota, Jodhpur, Ariyalur Raw material for cement; India 2nd largest cement producer
Energy Source Installed Capacity (March 2025) Share Key Policy
Thermal (coal + gas + oil) ~240 GW ~45% Coal India Ltd.; NTPC
Hydropower ~47 GW ~9% National Hydroelectric Power Corporation (NHPC)
Nuclear ~7.5 GW ~1.5% NPCIL; 7 operating NPPs
Solar ~143.60 GW ~27% PM Surya Ghar Muft Bijli Yojana; SOG targets
Wind ~48 GW ~9% NIWE (National Institute of Wind Energy); Tamil Nadu, Gujarat, Rajasthan
Other Renewable (small hydro, biomass, waste) ~~15 GW ~3% —
Total ~529 GW — 500 GW renewable target by 2030

PART 2 — Detailed Notes

What are Minerals?

Key Term

Mineral: A naturally occurring substance that has a definite chemical composition. Minerals are found in rocks — as veins/lodes (metallic minerals in igneous and metamorphic rocks), in beds/layers (sedimentary rocks — coal, limestone, gypsum), or in alluvial deposits (placers — gold, platinum, tin).

Classification:

  • Metallic minerals:
    • Ferrous: Contain iron — iron ore (hematite, magnetite), manganese, nickel, cobalt, chromite
    • Non-ferrous: Do not contain iron — copper, bauxite (aluminium ore), lead, zinc, gold, silver
  • Non-metallic minerals: No metal content — limestone, mica, gypsum, salt (halite), graphite, sulphur, potash
  • Energy minerals / Mineral fuels: Coal, petroleum, natural gas, uranium, thorium

India's Mineral Distribution

Key Term

Iron Ore: India has the 4th largest iron ore reserves in the world (~28.5 billion tonnes). Types: Hematite (Fe₂O₃ — best quality, 60-70% Fe) found in Odisha-Jharkhand belt; Magnetite (Fe₃O₄ — highest Fe content ~72%) found in Karnataka. Key belts: Odisha-Jharkhand (Keonjhar, Sundargarh, Singhbhum), Chhattisgarh-Maharashtra (Bastar, Durg), Karnataka (Bellary-Hospet), Goa.

Coal: Two types: Gondwana coal (formed ~200–300 million years ago; high quality; 90%+ of India's reserves; Damodar Valley — Jharia, Raniganj, Bokaro, Karanpura) and Tertiary coal (formed ~15–60 million years ago; lower grade; Assam, Meghalaya, Arunachal, J&K Nagaland). Jharia (Jharkhand) = largest coal field in India. Raniganj (West Bengal) = oldest coal field (commercial mining since 1774).

Petroleum:

  • Assam: Digboi (1889 — India's oldest oilfield; refinery 1901), Naharkatia, Moran-Hugrijan
  • Gujarat: Ankleshwar, Kalol, Mehsana
  • Mumbai High: Offshore, ~160 km west of Mumbai; largest producing field (managed by ONGC)
  • Krishna-Godavari Basin: Deepwater offshore; KG-D6 block (Reliance); significant gas reserves
  • Rajasthan: Barmer-Sanchore basin (Cairn India/Vedanta)

Mica: India was historically the world's largest exporter of sheet mica (used in electrical and electronics industries — insulation). Jharkhand (Hazaribagh, Koderma, Giridih) and Rajasthan (Ajmer, Bhilwara, Jaipur) are the main producers.

Power Resources

UPSC Connect

UPSC GS3 — Energy Policy and Targets:

Conventional Energy:

  • Coal: Thermal power plants use coal; ~50% of India's electricity generation. Coal India Limited (CIL) = world's largest coal mining company. Issue: Stranded assets as renewable energy becomes cheaper.
  • Petroleum: Mostly for transportation; India imports ~85% of its crude oil needs (2024). Strategic Petroleum Reserves (SPR) at Vishakhapatnam, Mangaluru, Padur — total ~5.3 million tonnes.
  • Natural Gas: GAIL (Gas Authority of India Ltd.) manages pipelines. Domestic production ~34 BCM/year; imports LNG (Qatar = largest supplier).
  • Hydropower: ~47 GW installed; major projects: Bhakra-Nangal (Punjab/Himachal), Hirakud (Odisha), Tehri (Uttarakhand), Sardar Sarovar (Gujarat), Indira Sagar (MP). Pumped hydro storage important for grid balancing.

Renewable Energy:

  • Solar: India's installed solar capacity = ~143.60 GW (March 2025); world's 4th largest. Key schemes: PM Surya Ghar Muft Bijli Yojana (1 crore rooftop solar households), PM-KUSUM (solar pumps for farmers). Rajasthan, Gujarat, Tamil Nadu = top solar states.
  • Wind: ~48 GW installed; Tamil Nadu (world's 5th largest wind power state), Gujarat, Rajasthan, Maharashtra lead. Offshore wind target: 30 GW by 2030.
  • Target: 500 GW renewable installed capacity by 2030 (India's NDC commitment under Paris Agreement).
  • National Total: ~529 GW total installed capacity (March 2025).

Nuclear Power:

  • Department of Atomic Energy (DAE) + Nuclear Power Corporation of India Ltd. (NPCIL)
  • 7 operating Nuclear Power Plants (NPPs): Tarapur (Maharashtra — oldest, 1969), RAPS (Rawatbhata, Rajasthan), MAPS (Madras, Tamil Nadu), KAPS (Kakrapar, Gujarat), KAIGA (Karnataka), NAPS (Narora, UP), Kudankulam (Tamil Nadu — Russia-aided, largest unit capacity)
  • Total nuclear capacity: ~7.5 GW (7,480 MW); target 22.5 GW by 2031–32
Explainer

India's Three-Stage Nuclear Programme (Homi J. Bhabha, 1954):

Designed to exploit India's abundant thorium reserves while working around limited uranium:

Stage 1 — Pressurised Heavy Water Reactors (PHWRs): Use natural uranium (U-238 + U-235) as fuel; produce plutonium-239 as byproduct. Status: Currently operating (all 7 NPPs are PHWRs or BWRs).

Stage 2 — Fast Breeder Reactors (FBRs): Use plutonium (from Stage 1) + depleted uranium; breed more plutonium than consumed; also breed U-233 from thorium blanket. Status: Prototype Fast Breeder Reactor (PFBR) at Kalpakkam, Tamil Nadu (500 MW) — achieved first criticality in 2024 (long delayed).

Stage 3 — Thorium-based Reactors: Use U-233 (bred in Stage 2) + thorium-232; India's vast thorium reserves (~320,000 tonnes = ~25% of world total) become the primary fuel. Status: Still decades away; AHWR (Advanced Heavy Water Reactor) design being developed at BARC.

Why thorium matters: India has among the world's largest thorium deposits in coastal monazite sands (Kerala, Tamil Nadu — Chavara, Manavalakurichi). Thorium is ~3-4x more abundant than uranium globally; cannot sustain a chain reaction directly but breeds fissile U-233.

Exam Strategy

Prelims traps:

  • Digboi = India's OLDEST oilfield (1889); Mumbai High = India's LARGEST oilfield (offshore)
  • Jharia = largest coal field; Raniganj = OLDEST coal field (not largest)
  • Hematite iron ore = 60-70% Fe (best commercially mined); Magnetite = highest Fe (~72%) but less common commercially
  • India's thorium reserves = ~25% of world total; NOT uranium
  • PFBR at Kalpakkam achieved criticality 2024 — Stage 2 of three-stage nuclear programme
  • Kudankulam (Tamil Nadu) is Russia-aided; NOT Bhilai (which is a steel plant, also Russia-aided)

Mains angles:

  • India's energy security — import dependence for oil and coal vs renewable potential
  • Three-stage nuclear programme — strategic importance of thorium
  • 500 GW renewable target — feasibility, land requirements, grid stability challenges
  • Critical minerals (lithium, cobalt) for energy transition — India's import dependence

Previous Year Questions

Prelims:

  1. Which of the following is the site of India's oldest oil refinery?
    (a) Barauni
    (b) Koyali
    (c) Digboi
    (d) Haldia

  2. With reference to India's three-stage nuclear power programme, which of the following statements is correct?
    (a) Stage 1 uses thorium as fuel
    (b) Stage 2 uses plutonium from Stage 1 reactors to breed more plutonium and U-233 from thorium
    (c) Stage 3 directly uses natural uranium
    (d) India has already completed Stage 3

  3. Khetri mines, often seen in news, are associated with which mineral?
    (a) Iron ore
    (b) Gold
    (c) Copper
    (d) Manganese

Mains:

  1. Discuss the significance of India's three-stage nuclear power programme in ensuring long-term energy security. What are the challenges in its implementation? (CSE Mains 2018, GS Paper 3, 15 marks)
  2. India's solar energy sector has seen rapid growth. Examine the factors responsible for this and the challenges that remain in achieving the 500 GW renewable target by 2030. (CSE Mains 2023, GS Paper 3, 15 marks)