Diamond's 2-billion-year growth charts tectonic shift in early Earth's carbon cycle

ENN
Feb 24, 2017, 2:56 pm30 pts
A study of tiny mineral ‘inclusions’ within diamonds from Botswana has shown that diamond crystals can take billions of years to grow. One diamond was found to contain silicate material that formed 2.3 billion years ago in its interior and a 250 million-year-old garnet crystal towards its outer rim, the…

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