Email this article Olivine in a coesite-bearing eclogite from the Udachnaya kimberlite pipe
- Authors: Mikhailenko D.S.1, Rezvukhin D.I.1, Korsakov A.V.1, Sobolev N.V.1,2
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Affiliations:
- Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
- Novosibirsk State University
- Issue: Vol 489, No 3 (2019)
- Pages: 286-291
- Section: Geochemistry
- URL: https://journals.eco-vector.com/0869-5652/article/view/18596
- DOI: https://doi.org/10.31857/S0869-56524893286-291
- ID: 18596
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Abstract
Olivine (high-Fe forsterite; Fo# 69-76) and associated minerals have been studied in a coesite-bearing diamon-diferous 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 и Al2O3. The coexistence of olivine and coesite is uncommon for mantle xenoliths. The occurrence of olivine and K, Na, Сl-bearing minerals in the studied sample is suggested to have been caused by the interaction of the eclogite with a protokimberlitic melt enriched in alkali components and chlorine.
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About the authors
D. S. Mikhailenko
Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Email: pazilovdenis@igm.nsc.ru
Russian Federation, 3, Koptyug prospect, Novosibirsk, 630090
D. I. Rezvukhin
Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Author for correspondence.
Email: pazilovdenis@igm.nsc.ru
Russian Federation, 3, Koptyug prospect, Novosibirsk, 630090
A. V. Korsakov
Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Email: pazilovdenis@igm.nsc.ru
Russian Federation, 3, Koptyug prospect, Novosibirsk, 630090
N. V. Sobolev
Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University
Email: pazilovdenis@igm.nsc.ru
Academician of the Russian Academy of Sciences
Russian Federation, 3, Koptyug prospect, Novosibirsk, 630090; 1, Pirogova street, Novosibirsk, 630090References
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