Earth's Mysterious Black Diamonds May Have Begun With an Ancient Cosmic Impact
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4 Articles
A NEW study suggests that black diamonds formed in the Earth's mantle after an ancient asteroid impact pushed organic carbon deep into the Earth's mantle.
Earth's Mysterious Black Diamonds May Have Begun With an Ancient Cosmic Impact
(James St. John/Wikimedia Commons, CC BY 2.0) No one has identified the rock in which they originally formed.ScienceAlert stories are written, fact-checked, and edited by humans, never generated by AI. Don't miss a story, subscribe here.
How can a diamond exist without ever finding the rock that saw it born? The question seems almost absurd as it goes against everything that geology has taught us. And yet, it is exactly the puzzle posed by carbonados, these black and porous diamonds that we find mainly [...]
Carbonade, or black diamond, is an unusual stone with a porous structure found exclusively in riverbeds in Brazil and Central Africa.
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