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And on top of that, may be the oldest rock from Earth still in existence. (Most of the Earth's crust is recycled into the mantle over billions of years.)

[phys.org]
Quote

In findings published overnight in science journal Earth and Planetary Science Letters, a sample collected during the 1971 Apollo 14 lunar mission was found to contain traces of minerals with a chemical composition common to Earth and very unusual for the moon.
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Moon rock recovered by astronauts likely originated on Earth 594 Nolondil 28-Jan-19 01:35


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