Watery minerals from the deep, deep Earth

Planetary science news! Not only does Earth have a nice, wet surface, but a new mineral sample gives us a peek at a wet interior, too. Water, water, everywhere...

One quibble — this isn't a new suspicion amongst geoscientists. Instead, it's the first direct proof from a deep-Earth mineral that those suspicions are correct! I do love me some data to back up a theory...

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Geologists now suspect that an entire ocean's worth of water exists deep inside the Earth's

Geologists now suspect that an entire ocean's worth of water exists deep inside the Earth's crust. The discovery of a diamond-like grain made of ringwoodite — a water-rich mineral previously seen only in meteorites — suggests that vast volumes of water are trapped 250–400 miles beneath the surface of the planet.

Image: Richard Siemens, University of Alberta.

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