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Iron Oxyhydroxides

All articles tagged with #iron oxyhydroxides

science21 days ago•25 min saved

Deep-Earth minerals could cradle oceans of water far beneath the crust

A Nature Geoscience study identifies two newly discovered iron oxyhydroxide minerals that could trap vast amounts of water deep in the lower mantle, around 2,900 kilometres below the surface near the mantle–outer core boundary. If confirmed, this suggests water equivalent to about one to two Pacific Oceans might reside inside Earth, though the evidence is preliminary and the water would be stored within minerals rather than as liquid oceans.

via WION|

#core-mantle-boundary #deep-mantle-water #iron-oxyhydroxides

earth-science23 days ago•16 min saved

Deep Mantle, Hidden Water: New Iron Minerals Could Store Earth's Ancient Water

A new Nature Geoscience study suggests Earth’s mantle could hide an ancient water reservoir. In lab experiments simulating conditions about 1,800 miles beneath the surface (roughly 2 million atmospheres and 2,500°C), scientists formed two iron oxyhydroxide minerals, Fe5O12Hx and Fe7O12Hx, that can trap water across deep-mantle conditions and may host primordial or recycled water near the core–mantle boundary. While it’s not yet proven these minerals occur naturally, the findings offer a potential deep-Earth water store and shed light on the mantle’s role in Earth’s water cycle and interior structure.

via Gizmodo|

#deep-earth #earth-science #high-pressure-experiments

science24 days ago•6 min saved

New Iron Hydrates Hint at Hidden Water Deep in Earth's Mantle

Researchers using laser-heated diamond anvils identified two iron oxyhydroxide minerals that can trap water under deep-mantle conditions near the core–mantle boundary, suggesting Earth’s water cycle may extend into the deep interior and could be released back to the surface through mantle dynamics, though the exact amounts and transport timing remain uncertain.

via ScienceAlert|

#core-mantle-boundary #iron-oxyhydroxides #mantle