Инд. авторы: | Kriulina G.Y., Iskrina A.V., Zedgenizov D.A., Bobrov A.V., Garanin V.K. |
Заглавие: | The Compositional Peculiarities of Microinclusions in Diamonds from the Lomonosov Deposit (Arkhangelsk Province) |
Библ. ссылка: | Kriulina G.Y., Iskrina A.V., Zedgenizov D.A., Bobrov A.V., Garanin V.K. The Compositional Peculiarities of Microinclusions in Diamonds from the Lomonosov Deposit (Arkhangelsk Province) // Geochemistry International. - 2019. - Vol.57. - Iss. 9. - P.973-980. - ISSN 0016-7029. - EISSN 1531-8397. |
Внешние системы: | DOI: 10.1134/S0016702919090052; SCOPUS: 2-s2.0-85071519762; WoS: 000483729800004; |
Реферат: | eng: Abstract—: The data on the composition of microinclusions in diamonds from the Lomonosov deposits are reported for the first time. The studied diamonds include “coated” (n = 5) and cubic (n = 5) crystals. The estimated range of the degree of nitrogen aggregation in diamonds (4–39% B1) does not support their direct links with kimberlite magmatism; however, their short occurrence in the mantle at higher temperatures is probable as well. The composition of melt/fluid microinclusions in these samples varies from essentially carbonatitic to significantly silicate. It is shown that the contents of MgO, CaO, Na2O, Cl, and P2O5 decrease with increasing content of silicates and water. Different mechanisms of the generation and evolution of diamond-forming media are discussed to explain the observed variations. © 2019, Pleiades Publishing, Ltd.
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Ключевые слова: | Nitrogen aggregations; Microinclusions; Magmatisms; Direct links; Different mechanisms; Arkhangelsk; Sodium compounds; Silicates; Melting; Magnesia; Fluids; Diamonds; Deposits; Chlorine compounds; microinclusions; melt; fluid; diamond; Arkhangelsk diamond province; Diamond deposits; |
Издано: | 2019 |
Физ. характеристика: | с.973-980 |