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Τρίτη 13 Μαρτίου 2018

Natural diamond formation by self-redox of ferromagnesian carbonate [Earth, Atmospheric, and Planetary Sciences]

Formation of natural diamonds requires the reduction of carbon to its bare elemental form, and pressures (P) greater than 5 GPa to cross the graphite–diamond transition boundary. In a study of shocked ferromagnesian carbonate at the Xiuyan impact crater, we found that the impact pressure–temperature (P-T) of 25–45 GPa and...

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