Japan finds rare earths in ocean depths

Sediment containing rare earth was retrieved from ocean depths of 6,000 metres (about 20,000 feet) on a Japanese test mission, the government said Monday, as it seeks to curb dependence on China for the valuable minerals.

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Japan's deep-sea drilling vessel Chikyu anchored at Shimizu port in Shizuoka prefecture in 2013.AFP

(AFP)

Japan says the mission was the world’s first bid to tap deep sea rare earths at such a depth.

“Details will be analysed, including exactly how much rare earth is contained” in the sample, government spokesman Kei Sato said, calling it “a meaningful achievement both in terms of economic security and comprehensive maritime development”.

The sample was collected by a deep-sea scientific drilling boat called the Chikyu that set sail last month for the remote island of Minami Torishima in the Pacific, where surrounding waters are believed to contain a rich trove of valuable minerals.