Auction-ready critical minerals and strong investor appetite

Guwahati, June 29: North Eastern Region (NER) is emerging as a key frontier in the nation’s mineral security ambitions, with over 38 mineral blocks—ranging from rare earth elements (REEs) to graphite, vanadium, and limestone—now auction-ready, according to a new Geological Survey of India (GSI) handbook released recently.

Of the 38 exploration blocks handed over to date, 7  blocks on critical and industrial minerals have already been auctioned to preferred bidders, with significant auction premiums recorded reflecting growing industry confidence in the mineral potential of the region.

Backed by extensive geoscientific data and policy reforms under the MMDR Act 2015, the region—long seen as underexplored—is being repositioned as an investment-ready landscape for both industrial and critical minerals vital for India’s clean energy and tech future.

Geologically, the NER lies at the tri-junction of the Indian, Eurasian, and Burmese tectonic plates, resulting in a complex and dynamic geological framework. This includes rock formations ranging in age from the Archaean to the Quaternary and tectonic units such as the Eastern Himalayas, the Shillong Plateau and the Indo-Burma Ranges. The interplay of these geotectonic units has given rise to a rich spectrum of mineral occurrences ranging from hydrocarbons and coal to industrial and critical minerals.

The states of Arunachal Pradesh and Assam have emerged as promising zones for graphite, vanadium, REEs, base metals, gold, coal and limestone, while Meghalaya and Nagaland hold extensive resources of limestone, coal, and minor strategic metals.

The presence of ophiolite belts, alkaline complexes, and granitic terrains in various parts of the region further indicates its potential for rare metals and industrial minerals.

The Handbook on Geological Potential of North East India outlines how states like Arunachal Pradesh, Assam, and Meghalaya have rapidly scaled up exploration efforts, with Arunachal alone accounting for 24.81 million tonnes of graphite and 17.17 million tonnes of vanadium. Assam has confirmed over 1,490 million tonnes of limestone and 28.64 million tonnes of REE, while Meghalaya leads with 6,600+ million tonnes of cement-grade limestone.

“NER has moved from geological potential to auction momentum,” said officials, highlighting seven critical mineral blocks already auctioned to firms such as Vedanta, Star Cements, and Oil India.

The Geological Survey of India has also introduced tech-driven initiatives like the Critical Mineral Assessment Programme and Regional Mineral Targeting, leveraging AI, geospatial tools, and baseline mapping to accelerate discoveries in the region.

With support from the National Mineral Exploration Trust (NMET), GSI’s efforts have laid the groundwork for a strategic shift, placing the Northeast not just as India’s biodiversity hotspot, but as its next mineral frontier.

The region’s transformation is being enabled by a combination of geoscientific mapping, technology-driven exploration, and targeted government funding. “The North East has moved from being a zone of potential to a zone of production-readiness,” said a senior GSI official. “This is a shift driven by decades of scientific mapping and a clear policy push toward critical minerals.”

Initiatives like the Critical Mineral Assessment Programme (CMAP) and Regional Mineral Targeting (RMT) have been instrumental in identifying mineral-rich zones across the region. These programs use AI tools, satellite mapping, and geochemical surveys to pinpoint promising deposits in geologically complex areas such as the ophiolite belts of Nagaland and Manipur, and alkaline complexes of Assam and Meghalaya.

Importantly, this strategic mineral development is being carried out under the framework of sustainability and local capacity building. The National Mineral Exploration Trust (NMET), since 2015, has funded over 35 exploration and infrastructure development projects across the eight northeastern states. These include not only mineral surveys but also the procurement of analytical tools and lab equipment for state geology departments.

Despite the mineral wealth, the report cautions that challenges persist, ranging from rugged terrain and ecological sensitivity to logistical bottlenecks and limited industrial infrastructure. “The North East is no longer a peripheral player. It is central to the nation’s mineral strategy,” the handbook notes.

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