Email this article Coesite inclusion in diamondferous kyanite-bearing eclogite from kimberlite pipe Udachnaya (Siberian Craton)
- Authors: Mikhailenko D.S.1, Korsakov A.V.1, Rezvukhina O.V.1, Golovin A.V.1, Sobolev N.V.1,2
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Affiliations:
- V. S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
- Novosibirsk State University
- Issue: Vol 487, No 4 (2019)
- Pages: 428-431
- Section: Geochemistry
- URL: https://journals.eco-vector.com/0869-5652/article/view/15836
- DOI: https://doi.org/10.31857/S0869-56524874428-431
- ID: 15836
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Abstract
A find of coesite in a kyanite graphite-diamond-bearing eclogite xenolith from the Udachnaya-Vostochnaya kimberlite pipe is described in this paper. The coesite relics were found in intensely fractured garnet indicating some influence of the kimberlite melt, which is supported by the typical secondary mineral assemblage around this inclusion. These data indicate that shallower diamond-free coesite rocks (2,7 GPa) underwent metamorphism distinct from diamond-bearing coesite eclogites (~4 GPa). The metasomatic alteration of rock interacting with C-O-H fluid during diamond crystallization may be another possible reason for the missing coesite in diamond-bearing xenoliths.
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About the authors
D. S. Mikhailenko
V. S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Email: akorsakov74@gmail.com
Russian Federation, 3, Acad. Koptiuga prospect, Novosibirsk, 630090
A. V. Korsakov
V. S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Author for correspondence.
Email: akorsakov74@gmail.com
Russian Federation, 3, Acad. Koptiuga prospect, Novosibirsk, 630090
O. V. Rezvukhina
V. S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Email: akorsakov74@gmail.com
Russian Federation, 3, Acad. Koptiuga prospect, Novosibirsk, 630090
A. V. Golovin
V. S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Email: akorsakov74@gmail.com
Russian Federation, 3, Acad. Koptiuga prospect, Novosibirsk, 630090
N. V. Sobolev
V. S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University
Email: akorsakov74@gmail.com
Academician of the Russian Academy of Sciences
Russian Federation, 3, Acad. Koptiuga prospect, Novosibirsk, 630090; 1, Pirogova str., Novosibirsk, 630090References
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