BharatNotes 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 7th in iron ore reserves (USGS 2025; ~5.5 billion tonnes crude ore); 4th in production; 2nd largest steel producer (2023) |
| Coal | Jharkhand, West Bengal, Odisha, Chhattisgarh, MP | Jharia (largest), Raniganj (oldest), Singrauli | Gondwana coalfields (~98% of reserves, ~99% of production); 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 | Andhra Pradesh (Nellore — #1 by production), Jharkhand, Rajasthan | Nellore belt, Hazaribagh, Ajmer | AP = largest crude mica producer (~dominant share); 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 2026) | Share | Key Policy |
|---|---|---|---|
| Thermal (coal + gas + oil) | ~249 GW (coal ~222 GW) | ~46.8% | Coal India Ltd.; NTPC |
| Hydropower | ~47 GW | ~8.8% | National Hydroelectric Power Corporation (NHPC) |
| Nuclear | ~8.88 GW (25 reactor units; 7 station sites) | ~1.7% | NPCIL; RAPP-7 commissioned April 2025; PFBR achieved first criticality April 6, 2026 |
| Solar | ~150 GW (record 45 GW added in FY2025-26) | ~28.2% | PM Surya Ghar Muft Bijli Yojana; PM-KUSUM; India now 3rd globally |
| Wind | ~56 GW (record 6.05 GW added FY2025-26; India 4th globally) | ~10.5% | NIWE; Tamil Nadu, Gujarat, Rajasthan lead |
| Other Renewable (small hydro, biomass, waste) | ~15 GW | ~2.8% | — |
| Total | ~533 GW (532.74 GW, CEA March 2026) | — | 500 GW renewable target by 2030; non-fossil now >53% |
PART 2 — Detailed Notes
What are Minerals?
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
Iron Ore: India has the 7th largest iron ore reserves in the world (~5.5 billion tonnes crude ore, iron content ~3.4 billion tonnes; USGS MCS 2025). India ranks 4th in iron ore production, not reserves — a common exam confusion. 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; ~98% of India's reserves and ~99% of production; 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). Andhra Pradesh (Nellore district) is the largest crude mica producer by volume. Jharkhand (Hazaribagh, Koderma, Giridih) and Rajasthan (Ajmer, Bhilwara, Jaipur) are also significant producers, historically important for sheet mica exports.
Power Resources
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 ~88–89% of its crude oil needs (FY2024-25, all-time high; up from ~85% in 2022). 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 = ~150 GW (March 2026); world's 3rd largest (record 45 GW added in FY2025-26). 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: ~56 GW installed (March 2026); India 4th globally; record 6.05 GW added FY2025-26. Offshore wind target: 30 GW by 2030.
- Target: 500 GW renewable installed capacity by 2030 (India's NDC commitment under Paris Agreement); non-fossil share has already crossed 53% of installed capacity (March 2026).
- National Total: ~533 GW total installed capacity (532.74 GW, CEA March 2026).
Nuclear Power:
- Department of Atomic Energy (DAE) + Nuclear Power Corporation of India Ltd. (NPCIL)
- 7 nuclear power station sites, 25 reactor units operational: 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); RAPP-7 (700 MW) commercially operational from April 15, 2025
- Total nuclear capacity: ~8,880 MW (~8.88 GW); target ~21,880 MW by 2031–32
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 on April 6, 2026 (DAE official announcement); long-delayed milestone; not yet in commercial operation.
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 first criticality April 6, 2026 — Stage 2 of three-stage nuclear programme; not yet in commercial operation
- India's crude oil import dependence: ~88–89% (FY2024-25, all-time high) — NOT 85%
- 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
Practice Questions
Prelims:
Which of the following is the site of India's oldest oil refinery?
(a) Barauni
(b) Koyali
(c) Digboi
(d) HaldiaWith 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 3Khetri mines, often seen in news, are associated with which mineral?
(a) Iron ore
(b) Gold
(c) Copper
(d) Manganese
Mains:
- 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)
- 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)
