| Инд. авторы: | Mikhailenko D.S., Rezvukhin D.I., Korsakov A.V., Sobolev N.V. |
| Заглавие: | Olivine in a Coesite-bearing Eclogite from the Udachnaya Kimberlite Pipe |
| Библ. ссылка: | Mikhailenko D.S., Rezvukhin D.I., Korsakov A.V., Sobolev N.V. Olivine in a Coesite-bearing Eclogite from the Udachnaya Kimberlite Pipe // Doklady Earth Sciences. - 2019. - Vol.489. - Iss. 1. - P.1358-1362. - ISSN 1028-334X. - EISSN 1531-8354. |
| Внешние системы: | DOI: 10.1134/S1028334X19110242; WoS: 000511725500022; |
| Реферат: | eng: Olivine (high-Fe forsterite; Fo# 69-76) and associated minerals have been studied in a coesite-bearing diamondiferous eclogite from the Udachnaya-East kimberlite pipe. Olivine was identified in the rock interstices together with K-feldspar, sodalite, phlogopite, and djerfisherite. The composition of individual olivine grains varies within the xenolith and is characterized by a consistent presence of P2O5, MnO, CaO, and Al2O3. The coexistence of olivine and coesite is uncommon for mantle xenoliths. The occurrence of olivine and K, Na, and Cl-bearing minerals in the studied sample is suggested to have been caused by the interaction of the eclogite with a protokimberlite melt enriched in alkali components and chlorine.
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| Ключевые слова: | YAKUTIA; INCLUSIONS; DIAMONDS; |
| Издано: | 2019 |
| Физ. характеристика: | с.1358-1362 |