The Specifics of Diamonds of Eclogitic and Peridotitic Paragenesis: Petrological Applications
- Autores: Spetsius Z.V1, Bogush I.N2
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Afiliações:
- Diamond and Precious Metal Geology Institute, Siberian Branch of the Russian Academy of Sciences
- Scientific Research Geological Enterprise of ALROSA (PJSC)
- Edição: Nº 12 (2023)
- Páginas: 22-30
- Seção: Articles
- URL: https://journals.eco-vector.com/0032-874X/article/view/627874
- DOI: https://doi.org/10.7868/S0032874X23120037
- ID: 627874
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Resumo
Morphology, inner structure, impurity composition, and mineral inclusions of 50 diamond plates from six deposits of Yakutia have been studied. All pipes are predominated by аcrystals of ultramafic paragenesis. The nature of the diamond growth and distribution of some inclusions on the interface of growing diamond zones are found to be discrete. In comparison with P-type diamonds, E-type crystals are characterized by higher total nitrogen and hydrogen content as well as by high percent of zonal crystals. Higher productivity of early diamond generation of P-type diamonds has been shown for the Daldyn-Alakitsky region, while in the Malo-Botubinsky region, the significant part of diamonds was formed at the late phases of lithosphere evolution during metasomatic processes. We also present data on diamond-bearing xenoliths (mainly eclogites) from the Udachnaya and Nyurbinskaya pipes as well as information on the features of the internal structure and variations in the isotopic composition of carbon in diamonds from these unique mantle rocks.
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Sobre autores
Z. Spetsius
Diamond and Precious Metal Geology Institute, Siberian Branch of the Russian Academy of Sciences
Email: spetsiuszv@gmail.com
Yakutsk, Russia
I. Bogush
Scientific Research Geological Enterprise of ALROSA (PJSC)
Email: BogushIN@gmail.com
Mirny, Russia
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