← Indian Geography
Mineral Resources — Bauxite, Mica, and Other Minerals
Bauxite — The Aluminum Ore
India is the world’s 5th largest bauxite producer (~24 million tonnes annually) and holds the 5th largest reserves globally (~660 million tonnes).
Geographic Requirements
- Formation: Residual weathering of aluminum-rich rocks (mostly basalt and laterite)
- Climate: Tropical monsoon with alternating wet and dry seasons (laterization)
Distribution
| State | Share | Key Deposits |
|---|---|---|
| Odisha | ~55% | Panchpatmali (Koraput) — largest bauxite deposit in India (~340 MT reserves); Kalahandi, Rayagada, Sundargarh |
| Gujarat | ~12% | Kutch, Saurashtra, Kheda |
| Jharkhand | ~10% | Ranchi, East Singhbhum |
| Chhattisgarh | ~8% | Bastar, Mainpat (Surguja), Durg |
| Maharashtra | ~5% | Kolhapur, Ratnagiri |
| Tamil Nadu | ~5% | Nilgiris, Salem |
Major Mining and Refining Complexes
- NALCO (National Aluminium Company): Panchpatmali mines (Odisha) with alumina refinery at Damanjodi, smelter at Angul
- HINDALCO: Renukoot (UP), Belgaum (Karnataka), Muri (Jharkhand), Sambalpur (Odisha)
- BALCO (Bharat Aluminium Company): Korba (Chhattisgarh)
- Vedanta Aluminium: Jharsuguda (Odisha) — world’s largest single-location aluminum smelter
Mica — The Sheet Mineral
India was once the world’s largest producer of sheet mica, accounting for 60% of global output. Mica production has declined drastically due to synthetic substitutes, but India still has significant deposits.
Distribution
- Jharkhand: Koderma (largest mica belt in the world; “Mica Capital of the World”), Gaya, Hazaribagh, Giridih — mostly ruby mica
- Bihar: Nawada, Muzaffarpur, Jamui
- Rajasthan: Ajmer, Bhilwara, Tonk, with some production
- Andhra Pradesh: Nellore mica belt — best quality sheet mica
Types
| Type | Color | Uses |
|---|---|---|
| Muscovite (Potash mica) | White, light green | Electrical insulation, capacitors, furnace windows |
| Phlogopite (Magnesia mica) | Brown, amber | High-temperature applications |
| Biotite (Iron-magnesium mica) | Black, dark green | No industrial value; mostly waste |
Decline
- Production fell from ~50,000 tonnes (1950s) to ~10,000 tonnes today
- Reasons: Synthetic alternatives, labor issues, child labor scandals (Koderma)
- Koderma Special Mica Zone: revived interest in mica mining for electronics (5G, smartphones, EV batteries)
Copper
India’s copper reserves are modest (~150 million tonnes of ore), contributing only ~4 million tonnes annually.
Distribution
| State | Share | Key Mines |
|---|---|---|
| Rajasthan | ~50% | Khetri-Singhana (Jhunjhunu) — largest belt; Kolihan, Dariba |
| Madhya Pradesh | ~25% | Malajkhand (Balaghat) — largest copper mine in central India |
| Jharkhand | ~20% | Singhbhum — Mosaboni, Rakha, Surda (now mostly depleted) |
Major Companies
- HCL (Hindustan Copper Ltd.) — only integrated copper producer; mines in Rajasthan, MP, Jharkhand
- Vedanta’s Sterlite Copper (Tuticorin, TN) — closed since 2018 (pollution protest)
- Copper imports fill the gap: India imports ~50% of its copper requirements
Gold
India is the world’s 2nd largest gold consumer but a minor producer (~1.5 tonnes annually vs. consumption of ~800 tonnes).
Deposits
| State | Location |
|---|---|
| Karnataka | Kolar Gold Fields (now closed — deepest mines in the world, operational 1880-2001); Hutti Gold Mines (Raichur; only gold mine producing in India); Ramagiri (Anantapur); Uti |
| Jharkhand | Pahardia, Malkocha (minor) |
| Andhra Pradesh | Ramagiri |
Hutti Gold Mines Co. Ltd. — only primary gold producer in India; average grade 5-6 g/tonne
Other Important Minerals
| Mineral | Key Producer State | Uses |
|---|---|---|
| Chromite | Odisha (90%) — Sukinda Valley (Jajpur) | Stainless steel, chrome plating, refractories |
| Limestone | MP, Chhattisgarh, Rajasthan, Karnataka, Andhra | Cement (essential raw material), iron & steel (flux) |
| Dolomite | Chhattisgarh, Odisha, MP | Iron smelting, refractory bricks |
| Gypsum | Rajasthan (85%) — Bikaner, Barmer | Cement, fertilizers, plaster of Paris |
| Diamond | MP — Panna (only producing mine); Chhattisgarh — Raigarh | Gems, industrial cutting |
| Tungsten | Maharashtra, Karnataka, Rajasthan | Electric bulbs, tool bits |
| Uranium | Jharkhand (Jaduguda — largest), Andhra, Meghalaya | Nuclear energy |
| Lead-Zinc | Rajasthan (90%) — Zawar (Udaipur), Rampura-Agucha (Bhilwara) | Batteries, galvanizing |
| Tin | Chhattisgarh (Bastar) | Tinplate, soldering, alloys |
| Magnesite | Tamil Nadu (Salem — largest), Uttarakhand | Refractories, firebricks |
| Barytes | Andhra Pradesh (Mangampet) — world’s largest deposit | Oil well drilling mud, paint |
| Kyanite | Jharkhand (Lapso-Buru) — world’s best quality | Refractory industry |
| Manganese | Odisha (Keonjhar), Karnataka (Shimoga) | Steel-making (deoxidizer) |