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This Tiny Diamond Contains a Mineral That's Never Been Seen Before
JAY GORY, MANAGING EDITOR, science
The discovered mineral — called calcium silicate perovskite (CaSiO3)— was found trapped inside a diamond excavated from South Africa's Cullinan mine (most famous for yielding the world's largest diamond in 1905, part of which now adorns the crown jewels of the United Kingdom). The finding, published online today (March 7) in the journal Nature, provides an important clue to the puzzle of how Earth's inner structure behaves. While rare to human eyes, calcium silicate perovskite may be shockingly ordinary deep inside the Earth — in fact, it's thought to be the fourth most abundant mineral inside the planet, especially prevalent in slabs of oceanic crust that have plunged into the planet's mantle at tectonic boundaries. read more
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