Context

• The Andhra Pradesh Department of Mines and Geology signed a Memorandum of Understanding (MoU) with the Council of Scientific & Industrial Research–National Geophysical Research Institute (CSIR-NGRI) on 12 August 2026 for the exploration of lithium and gallium deposits in the Kadapa Basin. The agreement was signed at the State Secretariat in Vijayawada in the presence of Chief Minister N. Chandrababu Naidu and Mines Minister Kollu Ravindra.

What Are Critical Minerals?

• Critical minerals are mineral resources that have high economic or strategic importance but face potential supply-chain risks. Their availability is crucial for sectors such as renewable energy, electric mobility, electronics, defence and advanced manufacturing.

Lithium

Lithium is a lightweight metal that plays a crucial role in the modern energy economy. It is extensively used in:

• Rechargeable batteries
• Electric vehicles
• Energy-storage systems
• Ceramics and glass
• Lubricants
• Specialised alloys

The growing adoption of electric vehicles and renewable-energy storage has significantly increased the strategic importance of lithium.

Gallium

Gallium is a post-transition metal with important applications in advanced electronics and semiconductor technologies. It is used in:

• Semiconductors
• Light-emitting diodes (LEDs)
• Integrated circuits
• Solar-related technologies
• High-performance electronic devices

Thus, the exploration of gallium is particularly important for strengthening India's domestic supply chain for high-technology industries.

Exploration in the Kadapa Basin

The geological survey will focus primarily on the Vempalle and Thummalapalle areas of the Kadapa Basin.

Preliminary studies cited in the article have indicated:

• Lithium concentration: Up to 1,000 parts per million (ppm)
• Gallium concentration: Up to 250 ppm

The Kadapa Basin is a sedimentary basin containing mineral-bearing geological formations. The Thummalapalle area is also known for uranium mineralisation, adding to the strategic mineral significance of the region.

The exploration exercise could therefore contribute to a better understanding of the mineral potential of Andhra Pradesh and support future resource development.

Funding and Institutional Framework

• The exploration project has an estimated budget of ₹140 crore. According to the article, the entire project will be funded through the National Mineral Exploration Trust (NMET).
• NMET is a statutory trust established under the Mines and Minerals (Development and Regulation) Act, 1957. Its broad purpose is to support mineral exploration and encourage systematic identification of mineral resources in the country.
• The involvement of CSIR-NGRI is significant because geological and geophysical expertise is essential for identifying and assessing concealed mineral deposits.

Skill Development and Mining Technology

On the same day, the Andhra Pradesh government also signed another MoU with IIT (ISM) Dhanbad–TEXMiN for technology development and skill enhancement in the mining sector.

A Centre of Excellence for Mining is proposed to be established in Andhra Pradesh under this partnership.

This creates a broader framework combining:

Mineral exploration → Scientific assessment → Technology development → Skilled manpower → Resource utilisation

Such an integrated approach can strengthen the state's mining ecosystem and improve the adoption of modern exploration and mining technologies.

Strategic Significance for India

• The exploration pact has significance beyond Andhra Pradesh because India is seeking to reduce vulnerabilities associated with dependence on imported critical minerals.
• Lithium is central to the energy transition, particularly electric mobility and battery storage, while gallium is important for the semiconductor and advanced electronics ecosystem.

Domestic exploration can therefore contribute to:

1. Supply-chain security for critical minerals.
2. Reduction in excessive dependence on imports.
3. Development of domestic battery and electronics manufacturing.
4. Strengthening of India's strategic and technological autonomy.
5. Creation of new opportunities for mineral-based industries.
6. Generation of skilled employment in exploration and mining.
7. Greater participation of Indian institutions in advanced geoscientific research.

Challenges

Discovery of mineral occurrences does not automatically translate into economically viable mining. Further exploration is required to determine the size, grade, continuity and economic feasibility of deposits.

The government must also balance mineral extraction with:

• Environmental protection
• Water-resource management
• Land-use concerns
• Sustainable mining practices
• Local community interests
• Rehabilitation and reclamation of mining areas

Therefore, exploration should be followed by scientifically sound resource assessment and environmentally responsible development.

Way Forward

• The Andhra Pradesh initiative demonstrates the importance of combining government institutions, scientific organisations and specialised educational institutions in critical-mineral exploration.
• India should expand systematic exploration of lithium, gallium and other critical minerals, develop domestic processing and refining capabilities, promote recycling and strengthen international mineral partnerships.
• The proposed Centre of Excellence for Mining can further support research, technology adoption and human-resource development.

Major Minerals/Critical Minerals and Important Sites in India