Japan's Chikyu Finds Heavy Rare Earth Mud in Deep Pacific Seabed

Japan's research vessel Chikyu has identified rare earth-rich mud deposits off Minamitori Island in the deep Pacific seabed, with medium and heavy rare earth elements comprising 54% of total rare earth content. The government has not disclosed deposit size, citing insufficient sampling data.

This Wire brief sits within Fusion42's coverage of Advanced Materials. Wire is Fusion42's founder-focused intelligence feed: each story is connected to the funds and startups it names — every one with a live profile on Raise or Scout — so founders can follow the capital and the momentum behind the headline rather than just the headline itself. Wire analysis is one of the live surfaces Arthur reasons over.