C and N Isotope Investigations of Ultra-deep Diamonds and Deep C-N Recycling Project uri icon

DCO ID 11121/8994-5844-6092-6976-CC


  • Scientific Findings: Study of an eclogitic diamond from the Mir pipe shows the complex growth and residence history of some diamonds within the mantle.  This sample shows clear evidence of 2 distinct growth periods from 2 isotopically distinct sources.  The growth periods may have been separated by a billion years.