Trace-element geochemistry of sulfides in lherzolite xenoliths from East Antarctica

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F21%3A00000114" target="_blank" >RIV/00025798:_____/21:00000114 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2075-163X/11/7/773" target="_blank" >https://www.mdpi.com/2075-163X/11/7/773</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/min11070773" target="_blank" >10.3390/min11070773</a>

Result language

angličtina

Original language name

Trace-element geochemistry of sulfides in lherzolite xenoliths from East Antarctica

Original language description

Sulfides in upper mantle lherzolite xenoliths from Cretaceous alkaline-ultramafic rocks inthe Jetty Peninsula (East Antarctica) were studied for their major and trace-element compositionsusing SEM and LA-ICP-MS applied in situ. Modal abundance of sulfides is the lowest in Cpx-poorlherzolites Spl-Grt lherzolites <;<; Cpx-rich lherzolites. Most sulfides are either interstitial (i-type) orinclusions in rock-forming minerals (e-type) with minor sulfide phases mostly present in metasomaticveinlets and carbonate-silicate interstitial patches (m-type). The main sulfide assemblage is pentlandite+ chalcopyrite pyrrhotite; minor sulfides are polydymite, millerite, violarite, siegenite, andmonosulfide solution (mss). Sulfide assemblages in the xenolith matrix are a product of the subsolidusre-equilibration of primary mss at temperatures below 300 C. Platinum group elements (PGE)abundances suggest that most e-type sulfides are the residues of melting processes and that the i-typesulfides are crystallization products of sulfide-bearing fluids/liquids. The m-type sulfides might haveresulted from low-temperature metasomatism by percolating sulfide-carbonate-silicate fluids/melts.The PGE in sulfide record processes are related to partial melting in mantle and intramantle meltmigration. Most other trace elements initially partitioned into interstitial sulfide liquid and latermetasomatically re-enriched residual sulfides overprinting their primary signatures. The extent ofelement partitioning into sulfide liquids depends on P, T, fO2, and host peridotite composition

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10505 - Geology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Minerals

ISSN

2075-163X

e-ISSN

—

Volume of the periodical

11

Issue of the periodical within the volume

7 : 773

Country of publishing house

CH - SWITZERLAND

Number of pages

32

Pages from-to

nestránkováno

UT code for WoS article

000676488400001

EID of the result in the Scopus database

2-s2.0-85110085152