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In case you are wondering:

> Named davemaoite after prominent geophysicist Ho-kwang (Dave) Mao, the mineral is the first example of a high-pressure calcium silicate perovskite (CaSiO3) found on Earth.

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To add to the tl;dr: the "never-before seen" is long since theoretically known, but davemaoite usually breaks down on its way up to the surface.

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