Study Of Diamond And Graphite Crystallization from Eclogite-carbonatite Melts At 8.5 Gpa: the Role Of Silicates In Diamond Genesis

摘要

Mineralogical studies of syngenetic diamond inclusions formed in the mantle have shown that they were formed in complex multicomponent parental media of variable compositions. Oxide, silicate, and aluminosilicate minerals of mafic and ultramafic assemblages, as well as sulfides, occur as inclusions in diamond. Phosphates, carbonates, chlorides, carbides, water, carbon dioxide, occasional native iron, methane, and other substances have been identified.