Minerals

Rajasthan is called a mineral state because its Aravalli hard-rock belt, western sedimentary basins, saline depressions and building-stone tracts produce an unusually wide mix of metallic, non-metallic, fuel and construction minerals. Rajasthan's mineral geography begins with scale.

According to the Department of Mines and Geology, Rajasthan produces about 57 different minerals.

Scale and Geological Base

• Area: The state covers 342,239 sq km, about one-tenth of India's area.
• Aravalli range: The Aravalli range cuts across it from south-west to north-east.
• Resource base: This old fold belt, western desert basins, saline depressions and sedimentary sequences create a rare mixture of metallic, non-metallic, fuel and building-stone resources.
• Department of Mines and Geology: Rajasthan is described as the richest Indian state in variety of minerals and says it produces about 57 minerals.
• Rajasthan Mineral Policy 2024: Rajasthan is the country's sole producer of lead, zinc, wollastonite, selenite, calcite and gypsum.
• Monopoly position: Rajasthan's mineral monopoly position is visible in lead, zinc, wollastonite, selenite and several industrial minerals.

Mineral Regionalisation

• State map: The state map is therefore not one belt.

Physical Controls

• Mineral distribution follows relief, rock structure, basin depth and transport access.
• Udaipur's hard-rock belt supports underground metal mines.
• Western basins support oil, gas and lignite.
• Saline lakes at Sambhar, Didwana and Pachpadra arise from enclosed drainage and evaporation.
• Same physical variety explains why a district can appear in more than one mineral layer.

Districts With Multiple Mineral Layers

Aridity and Hard-Rock Contrast

• Western half's aridity is not a background detail; it directly helps salt, gypsum and lignite localities stand apart from the wetter south-eastern metal and stone belts.
• Central Aravalli districts carry harder crystalline rocks, older mineralisation and higher quarry density.
• Base of regionalisation: This contrast is the base of Rajasthan's mineral regionalisation.
• Map reading: A complete map reading joins mineral, district, geological setting and economic use.

The exam point is simple: Rajasthan is not a single-mineral state. A strong answer links the mineral name to its district, rock setting, process of formation and economic use.