Around November 21, 2025, the Geological Survey of India (GSI) celebrated its 175th anniversary, marking one and three-quarter centuries of uninterrupted geoscientific service to the nation. Established in 1851 under the British administration primarily to find coal deposits for steam locomotives, the GSI has evolved into a comprehensive geoscience organisation conducting geological mapping, mineral exploration, seismology, glaciology, marine geology, and natural hazard assessment across India. Key recent milestones include: National Geoscience Data Repository (NGDR) digitisation of geological maps; critical mineral surveys (lithium, cobalt, graphite, REEs) for India's energy transition; and sea-bed mineral mapping in the Indian Ocean. GSI has identified major mineral deposits across Rajasthan — including world-class zinc-lead deposits at Zawar and Sindesar Kalan (HZL operations), copper at Khetri, potash in Nagaur-Ganganagar basin, rock phosphate in Jaisalmer, and significant lignite deposits in Barmer. GSI's geological mapping of Rajasthan's Aravalli-Delhi Fold Belt has been foundational for understanding the state's mineral wealth. In the context of India's Critical Mineral Mission and the G20 Critical Minerals Circularity Initiative proposed by PM Modi, GSI's enhanced role in prospecting and data sharing becomes strategically vital. Rajasthan shares about 9% of the country's total mineral production, making GSI's work directly relevant to the state's economic development.
India's Geological Survey (GSI) Completes 175 Years: Milestones in Mineral Mapping and Geoscience Services
Around November 21, 2025, the Geological Survey of India (GSI) celebrated its 175th anniversary, marking one and three-quarter centuries of uninterrupted geoscientific service to the nation. Established in 1851 under the British administration primarily to find coal deposits for steam locomotives, the GSI has evolved into a comprehensive geoscience organisation conducting geological mapping, mineral exploration, seismology, glaciology, marine geology, and natural hazard assessment across India. Key recent milestones include: National Geoscience Data Repository (NGDR) digitisation of geological maps; critical mineral surveys (lithium, cobalt, graphite, REEs) for India's energy transition; and sea-bed mineral mapping in the Indian Ocean. GSI has identified major mineral deposits across Rajasthan — including world-class zinc-lead deposits at Zawar and Sindesar Kalan (HZL operations), copper at Khetri, potash in Nagaur-Ganganagar basin, rock phosphate in Jaisalmer, and significant lignite deposits in Barmer. GSI's geological mapping of Rajasthan's Aravalli-Delhi Fold Belt has been foundational for understanding the state's mineral wealth. In the context of India's Critical Mineral Mission and the G20 Critical Minerals Circularity Initiative proposed by PM Modi, GSI's enhanced role in prospecting and data sharing becomes strategically vital. Rajasthan shares about 9% of the country's total mineral production, making GSI's work directly relevant to the state's economic development.
Key facts
- GSI celebrated 175 years of geoscientific service, established in 1851 for coal exploration.
- It now conducts geological mapping, mineral exploration, seismology, and marine geology.
- GSI identified major Rajasthan deposits: zinc-lead at Zawar, copper at Khetri, lignite in Barmer.
- NGDR digitisation and critical mineral surveys for lithium and REEs are recent milestones.
- Rajasthan shares about 9% of the country's total mineral production.
- PM Modi's Critical Minerals Circularity Initiative makes GSI's prospecting role vital.
Mains angle
Q: Discuss GSI's 175-year legacy for Rajasthan's mineral economy and India's Critical Mineral Mission.
Answer (50 words):
Established in 1851, the GSI celebrated 175 years around November 2025. Its mapping of Rajasthan's Aravalli-Delhi Fold Belt identified world-class zinc-lead deposits at Zawar, copper at Khetri, and potash in Nagaur-Ganganagar basin. GSI's recent critical-mineral surveys for lithium, cobalt, and rare-earth elements now support India's energy-transition and strategic-autonomy objectives.
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The Geological Survey of India (GSI) was established in which year?
The Geological Survey of India was established in 1851. It began primarily to investigate and assess coal and other mineral resources and later became India's principal earth-science survey organisation.
Source: PIB
Frequently asked questions
When was the Geological Survey of India (GSI) established and what was its original purpose?
GSI was established in 1851 under British administration with the primary purpose of locating coal deposits to fuel steam locomotives of the Indian railways. Over 175 years it expanded into a comprehensive geoscience organisation covering geological mapping, mineral exploration, seismology, glaciology, marine geology, and natural hazard assessment.
What is the National Geological Data Repository (NGDR) and why is it significant?
The NGDR is GSI's digital platform that digitises and centralises decades of geological survey data, field records, and mineral maps. It is significant because it makes geoscientific data accessible to researchers, industries, and policymakers, accelerating mineral exploration and informed decision-making under India's critical mineral strategy.
What major mineral deposits in Rajasthan were identified by GSI, and what is Rajasthan's share in India's mineral production?
GSI identified key deposits in Rajasthan including zinc-lead at Zawar (Udaipur), copper at Khetri (Jhunjhunu), and lignite in Barmer. Rajasthan contributes approximately 20–25% of India's total mineral production by value, making it one of the most mineral-rich states in the country.
What are critical minerals and why is GSI's role important in India's energy transition?
Critical minerals are elements essential for clean energy technologies — such as lithium, cobalt, nickel, and Rare Earth Elements (REEs) — used in EV batteries, solar panels, and wind turbines. GSI's prospecting role is vital because India is import-dependent for most critical minerals, and domestic surveys can reduce this dependence under PM Modi's Critical Minerals Circularity Initiative.
Under which ministry does the Geological Survey of India function?
GSI functions under the Ministry of Mines, Government of India. It is the premier geoscientific organisation of the country and provides baseline geoscience data to support mineral resource assessment, disaster risk reduction, and infrastructure development.
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