Major Metallic and Non‑Metallic Minerals of India

India possesses a rich geological structure that harbors a wide variety of metallic and non-metallic minerals. The country’s mineral wealth is concentrated mainly in the ancient crystalline and metamorphic rocks of the Peninsular Shield. The Indian Bureau of Mines and the Geological Survey of India map and monitor these national reserves. Mineral production contributes directly to industrial growth, export earnings, and infrastructure development across the nation.

Geological Distribution and Mineral Belts of India

Peninsular Plateau Region

The North-Eastern Peninsular Belt covers the Chota Nagpur Plateau, Odisha, Jharkhand, and West Bengal. This region contains major reserves of iron ore, coal, manganese, bauxite, and mica. The South-Western Belt spans Karnataka, Goa, and the adjoining uplands of Tamil Nadu and Kerala. It holds rich deposits of high-grade iron ore, manganese, and bauxite.

North-Western Region

The North-Western Belt extends along the Aravalli range in Rajasthan and parts of Gujarat. Rajasthan dominates in non-ferrous metals like lead, zinc, copper, and building stones such as marble and sandstone. Gujarat holds substantial deposits of petroleum, natural gas, gypsum, and salt.

Himalayan Belt

The Himalayan zone contains scattered occurrences of copper, lead, zinc, cobalt, and tungsten. The complex geological terrain makes large-scale extraction difficult in this region.

Classification of Minerals

Minerals are naturally occurring inorganic substances with a definite chemical composition and physical structure. They are broadly divided into metallic and non-metallic categories based on physical and chemical properties.

Major Ferrous Metallic Minerals

Iron Ore

India holds the largest reserves of iron ore in Asia. The principal iron ores extracted in the country are hematite and magnetite. Hematite is mostly found in Dharwar and Cuddapah rock systems, while magnetite occurs in Karnataka and southern states.

• Hematite Reserves: Found predominantly in Keonjhar and Mayurbhanj districts of Odisha, Bailadila in Chhattisgarh, and Singhbhum in Jharkhand.
• Magnetite Reserves: Concentrated in the Kudremukh belt of Karnataka, Salem district in Tamil Nadu, and parts of Andhra Pradesh.
• Top Producing States: Odisha leads national iron ore output, followed by Chhattisgarh, Karnataka, and Jharkhand.

Manganese Ore

Manganese serves as a raw material for smelting iron ore and manufacturing ferro-manganese alloys. About 6 kilograms of manganese is consumed to produce one tonne of steel.

• Major Deposits: Balaghat and Chhindwara districts in Madhya Pradesh, Nagpur and Bhandara in Maharashtra, and Sundargarh in Odisha.
• Top Producing States: Madhya Pradesh ranks first in manganese production, followed by Maharashtra and Odisha.

Chromite

Chromite is an oxide of iron and chromium, vital for metallurgical, chemical, and refractory industries.

• Major Reserves: Over 90 percent of India’s chromite reserves are concentrated in the Sukinda valley of Jajpur district in Odisha.
• Applications: Used in manufacturing stainless steel, special alloy steels, and corrosion-resistant coatings.

Major Non-Ferrous Metallic Minerals

Bauxite

Bauxite is the primary ore of aluminium, formed by the decomposition of surface rocks rich in aluminium silicates under tropical weathering.

• Geological Setting: Found in the plateau areas of the Peninsular shield, particularly in laterite caps.
• Key Belts: Panchpatmali deposits in Koraput district of Odisha, Maikala hills in Chhattisgarh, and Amarkantak plateau in Madhya Pradesh.
• Top Producing States: Odisha is the largest bauxite producing state, accounting for over half of total national output.

Copper

India is deficient in domestic copper reserves and relies on imports to satisfy industrial demand. Copper is malleable, ductile, and an effective conductor of electricity.

• Key Mining Centres: Malanjkhand belt in Balaghat district of Madhya Pradesh, Khetri belt in Jhunjhunu district of Rajasthan, and Singhbhum district of Jharkhand.
• Production Status: Madhya Pradesh is the largest copper ore producing state, followed by Rajasthan and Jharkhand.

Lead and Zinc

Lead and zinc occur together in nature as galena (lead sulfide) and sphalerite (zinc sulfide). They are essential for galvanizing, battery manufacturing, and chemical industries.

• Dominant Region: Rajasthan holds a near-total monopoly in lead and zinc production in India.
• Major Mines: Zawar mines, Rampura-Agucha in Bhilwara, and Rajpura-Dariba in Rajsamand.

Gold and Silver

Gold is a precious metal extracted from primary quartz vein deposits and secondary placer deposits. Silver is produced as a by-product during the refining of lead, zinc, copper, and gold.

• Gold Mines: Kolar Gold Fields and Hutti gold mines in Raichur district of Karnataka.
• Top Producing State: Karnataka dominates primary gold output in India.

Major Non-Metallic Minerals

Mica

Mica possesses high dielectric strength, low power loss factor, insulating properties, and resistance to high voltage. It is used extensively in electrical and electronic industries.

• Mica Belts: Nellore belt in Andhra Pradesh, Koderma-Gaya-Hazaribagh belt in Jharkhand and Bihar, and the Aravalli belt around Jaipur and Bhilwara in Rajasthan.
• Top Producing States: Andhra Pradesh is the leading producer of crude mica in the country.

Limestone

Limestone is a sedimentary rock composed of calcium carbonate. It is the basic raw material for the cement industry and acts as a fluxing agent in iron blast furnaces.

• Distribution: Found in Cuddapah, Vindhyan, and Dharwar geological systems across the country.
• Top Producing States: Rajasthan leads national limestone production, followed by Madhya Pradesh, Andhra Pradesh, and Chhattisgarh.

Dolomite and Gypsum

Dolomite is a double carbonate of calcium and magnesium used in refractory brick manufacturing. Gypsum is a hydrated calcium sulfate used in cement, plaster of paris, and soil reclamation.

• Dolomite Centres: Birmitrapur in Odisha, Bastar in Chhattisgarh, and Jalpaiguri in West Bengal.
• Gypsum Reserves: Rajasthan accounts for over 90 percent of India’s total gypsum output, centered around Bikaner, Jodhpur, and Jaisalmer.

Mineral Sector Governance and Legal Framework

Regulatory Mechanisms

• Mines and Minerals (Development and Regulation) Act, 1957: The central framework governing the grant of mining leases and mineral concessions in India.
• National Mineral Policy 2019: Focuses on encouraging private sector participation, creating exclusive mining zones, and streamlining environmental clearances.
• Indian Bureau of Mines (IBM): The regulatory authority responsible for monitoring mineral conservation, environmental management, and processing mining plans.

Key Facts

• India ranks among the top global producers of iron ore, chromite, bauxite, and mica.
• The Chota Nagpur Plateau is known as the mineral storehouse of India due to its vast concentration of metallic minerals and coal.
• Hematite ore contains up to 68 to 70 percent metallic iron, while magnetite contains up to 72 percent metallic iron.
• Sukinda valley in Odisha holds nearly the entirety of India’s commercial chromite reserves.
• Rajasthan holds a virtual monopoly in the extraction of lead, zinc, selenite, and wollastonite.
• The MMDR Amendment Act introduced auction-based allocation for major mineral concessions to replace discretionary allotment.
• Kudremukh in Karnataka is known for its large magnetite iron ore deposits, which were historically exported through the New Mangalore Port.
• Panchpatmali in Koraput district, Odisha, represents the largest single deposit of bauxite in the country.