Giant blobs in Earth’s mantle may be driving a ‘diamond factory’ near our planet’s core

The boundary zone between Earth’s molten metallic core and the mantle, its rocky center layer, may be a diamond manufacturing facility. 

A brand new laboratory experiment finds that, beneath excessive temperatures and pressures, the mixture of iron, carbon and water — all potential substances discovered on the core-mantle boundary — can kind diamond. If this course of additionally occurs deep inside Earth, it’d clarify some bizarre quirks of the mantle, together with why it has extra carbon in it than scientists count on. 

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