Deep-sea robots on the hunt for rich mineral deposits under the ocean's depths

These autonomous robots & controlled submarines are searching for deposits of zinc, gold and copper.

From the safety of their research vessel, scientists are exploring one of Earth’s few last frontiers — the sea floor — to discover more about valuable minerals vital in the manufacture of smartphones.

The scientists, from the University of Bergen in Norway, are sending robots 2,500 metres below the waters between Norway and Greenland to try to explore environments that could be potentially rich with rare-earth minerals.

“The ocean sea floor on Earth is, for the most part, unknown,” scientist Thibaut Barreyre told Reuters.

“It’s totally fair to say that we know much more about the surface of the moon and Mars — mapped by satellites and different devices — than we know about our own planet.”

Representational image. University of Tokyo

Representational image. University of Tokyo

The international team is using technology including autonomous robots and human-piloted submarines to explore the sea’s dark depths where zinc, gold and copper are also found.

The scientists hope the explorations will reveal why some areas have minerals and others do not, how much is down there and what damage mining them would have on the environment.

A viable new source of rare earths, a group of 17 elements used in the production of smartphone screens, magnets, camera lenses and X-ray machines could be highly lucrative. But it is not that simple, Barreyre said.

“Some of them (waters) are rich in gold, copper, zinc and rare earths. And others have almost none of those. And that’s why it’s very important to us as scientists to understand it,” he said.

The team, which began exploring the area last year, will spend the next five years searching.

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