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Eitelite in sheared peridotite xenoliths from Udachnaya-East kimberlite pipe (Russia); a new locality and host rock type

Igor S. Sharygin, Alexander V. Golovin, Andrey V. Korsakov and Nikolay P. Pokhilenko
Eitelite in sheared peridotite xenoliths from Udachnaya-East kimberlite pipe (Russia); a new locality and host rock type (in Geo-Raman X, Jean Dubessy (editor))
European Journal of Mineralogy (December 2013) 25 (5): 825-834

Abstract

For the first time eitelite Na (sub 2) Mg(CO (sub 3) ) (sub 2) was observed as a daughter phase in the melt inclusions in olivine from one of the deepest known mantle rocks sampled by kimberlite magma - sheared peridotite xenoliths (190 - 230 km), taken from the Devonian ( approximately 370 Ma) Udachnaya-East kimberlite pipe (Siberian craton, Russia). Eitelite was identified by confocal Raman spectroscopy and confirmed by energy-dispersive X-ray spectroscopy. Raman spectra of eitelite in the melt inclusions are characterized by a very strong band at 1105 cm (super -1) attributed to CO (sub 3) (super 2-) symmetric stretching, and weaker bands at 207-208 and 260-263 cm (super -1) due to lattice vibration. Our findings of eitelite in the melt inclusions entrapped by olivine of mantle xenoliths indicate that this rare carbonate can crystallise from primitive mantle-derived alkaline carbonatite melt.


ISSN: 0935-1221
EISSN: 1617-4011
Serial Title: European Journal of Mineralogy
Serial Volume: 25
Serial Issue: 5
Title: Eitelite in sheared peridotite xenoliths from Udachnaya-East kimberlite pipe (Russia); a new locality and host rock type
Title: Geo-Raman X
Affiliation: Russian Academy of Science, V.S. Sobolev Institute of Geology and Mineralogy, Novosibirsk, Russian Federation
Affiliation: Universite de Lorraine, Nancy, France
Pages: 825-834
Published: 201312
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Germany
Meeting name: 10th Geo-Raman meeting
Meeting location: Nancy, FRA, France
Meeting date: 20120611June 11-13, 2012
References: 64
Accession Number: 2014-004522
Categories: Mineralogy of non-silicates
Document Type: Serial Conference document
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
N66°25'60" - N66°25'60", E112°19'00" - E112°19'00"
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Schweizerbart'sche Verlagsbuchhandlung. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201404
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