Inclusions of Cr- and Cr–Nb-Rutile in pyropes from the Internatsionalnaya kimberlite pipe, Yakutia

D. I. Rezvukhin*, V. G. Malkovets, I. S. Sharygin, D. V. Kuzmin, K. D. Litasov, A. A. Gibsher, N. P. Pokhilenko, N. V. Sobolev

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The results of study of rutile inclusions in pyrope from the Internatsionalnaya kimberlite pipe are presented. Rutile is characterized by unusually high contents of impurities (up to 25 wt %). The presence of Cr2O3 (up to 9.75 wt %) and Nb2O5 (up to 15.57 wt %) are most typical. Rutile inclusions often occur in assemblage with Ti-rich oxides: picroilmenite and crichtonite group minerals. The Cr-pyropes with inclusions of rutile, picroilmenite, and crichtonite group minerals were formed in the lithospheric mantle beneath the Mirnyi field during their joint crystallization from melts enriched in Fe, Ti, and other incompatible elements as a result of metasomatic enrichment of the depleted lithospheric mantle.

Original languageEnglish
Pages (from-to)173-176
Number of pages4
JournalDoklady Earth Sciences
Volume466
Issue number2
DOIs
Publication statusPublished - 1 Feb 2016
Externally publishedYes

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