Olivine in a Coesite-bearing Eclogite from the Udachnaya Kimberlite Pipe

D. S. Mikhailenko, D. I. Rezvukhin, A. V. Korsakov, N. V. Sobolev

Результат исследования: Научные публикации в периодических изданияхстатья

Аннотация

Abstract: 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 Сl-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.

Язык оригиналаанглийский
Страницы (с-по)1358-1362
Число страниц5
ЖурналDoklady Earth Sciences
Том489
Номер выпуска1
DOI
СостояниеОпубликовано - 1 ноя 2019

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