Japan found that high-concentration rare earth reserves are more than ten times that of China

Abstract A collaborative research team from Yamaguchi University, Ehime University, and the University of Tokyo recently released a statement announcing the discovery of a new rare earth-containing mineral in Mie Prefecture. This breakthrough could have significant implications for Japan’s energy and technology sectors, which rely heavily on rare earth elements for advanced manufacturing and green technologies.

Recent reports also indicate that Japan has confirmed the presence of substantial high-grade rare earth deposits in the waters surrounding Nantuo Island. According to Japanese officials, these reserves are estimated to last over 230 years and contain rare earth concentrations approximately 20 times higher than those found in Chinese deposits.

For years, Japan has depended largely on China for its rare earth supply, with China accounting for about 90% of global exports despite holding only one-third of the world's total reserves. However, this long-standing dependency may be shifting. According to Japanese media, the country's undersea rare earth deposits are more than ten times larger than its onshore reserves, potentially allowing Japan to sustain itself for centuries without relying on foreign sources.

Professor Lin Boqiang, director of the Energy Economic Research Center at Xiamen University, suggests that Japan’s recent discovery could align with China’s ongoing efforts to regulate its rare earth exports through quota systems. As both nations navigate the evolving global supply chain landscape, this development marks an important turning point in the strategic competition for critical minerals.

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