Japan's Marine Research and Development Agency (JAMSTEC) successfully extracted approximately 50 tons of sediment from a depth of 6,000 meters near Minamitorishima in early 2026, with analysis confirming high concentrations of strategic rare earth elements. The Japanese government announced the results on July 24, stating that medium-heavy rare earths comprise 54% of the extracted material, including critical elements for semiconductor and electric vehicle manufacturing. This achievement represents a breakthrough in Japan's efforts to reduce dependence on Chinese rare earth imports and strengthen supply chain resilience under its economic security policy framework.
Rare Earth Composition Analysis Reveals Key Strategic Elements
According to the Nikkei report, official analysis revealed that medium-heavy rare earths account for approximately 54% of the collected sediment. Yttrium, widely used in semiconductor manufacturing equipment and defense applications, recorded the highest concentration at 29.9% of total rare earth content. Neodymium, essential for electric vehicle drive motors and high-performance permanent magnets, comprised 18.4%. The sediment also contained Dysprosium at 4.6%, which enhances magnet heat resistance, and Gadolinium at 4.9%, used in nuclear reactor control materials.
This discovery holds significant strategic value for Japan's economic security policy. Japan currently relies heavily on Chinese imports for rare earth supplies. Facing global supply chain concentration risks, the Japanese government actively pursues resource independence, positioning domestic extraction as a breakthrough to eliminate external dependence and strengthen supply chain resilience.
JAMSTEC Plans February 2027 Large-Scale Trial and 2028 Industrialization
The trial successfully verified the stable operation of the deep-sea sediment lifting system and onboard continuous extraction technology. Analysis confirmed the collected sediment contains almost no radioactive or hazardous substances, indicating lower environmental impact risks.
The Japanese government plans to conduct a second large-scale verification trial in February 2027, lasting one month. The operation will transport collected sediment to Minamitorishima for dewatering before shipping to mainland Japan, comprehensively verifying industrial-scale operations from extraction to separation and refining. The government will complete commercial profitability assessment by the end of March 2027, aiming to achieve domestic rare earth industrialization from fiscal year 2028 onwards.
FAQ
What did JAMSTEC extract from the seabed near Minamitorishima?
JAMSTEC's exploration vessel 'Chikyu' extracted approximately 50 tons of sediment from a depth of 6,000 meters near Minamitorishima in early 2026. Analysis confirmed the sediment contains high concentrations of strategic rare earth elements, with medium-heavy rare earths comprising 54% of total rare earth content.
When will Japan conduct the next rare earth extraction trial?
Japan plans to conduct a second large-scale verification trial in February 2027, lasting one month. The government will complete commercial profitability assessment by the end of March 2027, with industrialization targeted from fiscal year 2028 onwards.
