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FENG, M. -- SONG, W. -- KYNICKÝ, J. -- SMITH, M. -- COX, C. -- KOTLANOVA, M. -- BRTNICKÝ, M. -- FU, W. -- WEI, C. Primary rare earth element enrichment in carbonatites: Evidence from melt inclusions in Ulgii Khiid carbonatite, Mongolia. Ore Geology Reviews. 2020. v. 117, no. February, ISSN 0169-1368. URL: https://doi.org/10.1016/j.oregeorev.2019.103294

Original name:
Primary rare earth element enrichment in carbonatites: Evidence from melt inclusions in Ulgii Khiid carbonatite, Mongolia
Czech name:
Written by (author):
Meng Feng
Wenlei Song, Ph.D.
doc. Mgr. Jindřich Kynický, Ph.D.
Martin Smith
Clinten Cox
Michaela Kotlanova
Ing. Martin Brtnický
Wei Fu
Chunwan Wei
Department:
Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition
Department of Geology and Pedology
Kind of publication:
article in a professional periodical
Periodical:
Ore Geology Reviews
Nature of article:
paper
Volume no. (year):
117
Periodical number within the volume:
February
Year of publication:
2020
Starting page:
Up to page:
Number of pages: 14
Sub-specification:
článek je obsažen v databázi Web of Science
UT code by Web of Science:
EID code by Scopus:
Form of publication:
printed version
Original language: English
Description in original language:
Carbonatites are abundant in the rare earth elements (REE), and they host the most important REE resources in the world. However, the mechanisms that concentrate these elements during carbonatitic magmatic processes are still poorly constrained. Here, we report the occurrence of apatite-hosted melt inclusions from the Ulgii Khiid carbonatites, Mongolia, and use these to reconstruct the evolution of REE concentrations and patterns in early, primary carbonatite magma. The melt inclusions consist of a varied polycrystalline assemblage of daughter minerals, including calcite, diopside, phlogopite, magnetite, pyrite, monazite, parisite, and a phosphate glass which is remarkably enriched in REE. Heating-quenching experiments show that the homogenization temperatures of the inclusions are above 1200 oC and produce three immiscible liquid phases (i.e., phosphate-, silicate-, and Fe-silicate-melt). The phosphate melt has much higher REE content than the silicate melts. We, therefore, suggest that the melt inclusions trapped a REE-, P- and silicate-enriched carbonate melt produced via carbonate-silicate liquid immiscibility. During this process, both REE and P preferentially incorporated into the carbonate melt. With subsequent crystal fractionation of REE- and P-poor carbonate and silicate minerals, the separated carbonatitic melt becomes P-REE-saturated, forming REE minerals and an immiscible REE-rich phosphate melt. The phosphate melt is highly efficient at concentrating REE during the immiscibility process and plays a crucial role in controlling the REE budget in the P-rich carbonatite magmas.
Description in English:
Description in Czech:
Year of submission:
2020
Year of transmission:
RIV identification number:
URL:
https://doi.org/10.1016/j.oregeorev.2019.103294
 
Entry made by:
Last change:
02/06/2020 14:18 (Markéta Hejčová, DiS.)

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Source specification:

Ore Geology Reviews. Amsterdam: ISSN 0169-1368.

Original name: Ore Geology Reviews
Czech name:
Ore Geology Reviews
Written by (author):
Kind of publication: magazine
ISSN:
0169-1368
Country of publisher:
Kingdom of the Netherlands
Place of publishing: Amsterdam
Publisher:
Elsevier
URL:
http://www.sciencedirect.com/science/journal/01691368
Reviewed magazine:
no
Original language:
English
Description in original language: Ore Geology Reviews aims to familiarize all earth scientists with recent advances in a number of interconnected disciplines related to the study of, and search for, ore deposits.
Description in English:
Description in Czech:
Časopis Ore Geology Reviews si klade za cíl seznámit všechny vědce o aktuálním pokroku v několika vzájemně propojených oborech spojených se studiem rudních ložisek.
Key words:
czech: ložiska rud, vědy o zemi, geologie
english: earth sciences, ore deposits, geology
Field of result: DB
 
Entry made by:
Last change:
03/10/2015 09:45 (Šárka Novotná)

Evaluation of publication:

1
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1
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34
5
bad
 
good
        
uninteresting
 
interesting
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12
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1
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3
45
amateur
 
professional
        
theoretical
 
practical
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