Mineralogy of Phoscorites of the Arbarastakh Complex (Republic of Sakha, Yakutia, Russia)
The Arbarastakh ultramafic carbonatite complex is located in the southwestern part of the Siberian Craton and contains ore-bearing carbonatites and phoscorites with Zr-Nb-REE mineralization. Based on the modal composition, textural features, and chemical compositions of minerals, the phoscorites fro...
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ftmdpi:oai:mdpi.com:/2075-163X/11/6/556/ 2023-08-20T04:09:27+02:00 Mineralogy of Phoscorites of the Arbarastakh Complex (Republic of Sakha, Yakutia, Russia) Mikhail Nikolaevich Kruk Anna Gennadievna Doroshkevich Ilya Romanovich Prokopyev Ivan Aleksandrovich Izbrodin agris 2021-05-24 application/pdf https://doi.org/10.3390/min11060556 EN eng Multidisciplinary Digital Publishing Institute Mineral Geochemistry and Geochronology https://dx.doi.org/10.3390/min11060556 https://creativecommons.org/licenses/by/4.0/ Minerals; Volume 11; Issue 6; Pages: 556 phoscorites Arbarastakh alkaline-ultrabasic carbonatite complex complex mineralogy chemical evolution Aldan shield Text 2021 ftmdpi https://doi.org/10.3390/min11060556 2023-08-01T01:47:42Z The Arbarastakh ultramafic carbonatite complex is located in the southwestern part of the Siberian Craton and contains ore-bearing carbonatites and phoscorites with Zr-Nb-REE mineralization. Based on the modal composition, textural features, and chemical compositions of minerals, the phoscorites from Arbarastakh can be subdivided into two groups: FOS 1 and FOS 2. FOS 1 contains the primary minerals olivine, magnetite with isomorphic Ti impurities, phlogopite replaced by tetraferriphlogopite along the rims, and apatite poorly enriched in REE. Baddeleyite predominates among the accessory minerals in FOS 1. Zirconolite enriched with REE and Nb and pyrochlore are found in smaller quantities. FOS 2 has a similar mineral composition but contains much less olivine, magnetite is enriched in Mg, and the phlogopite is enriched in Ba and Al. Of the accessory minerals, pyrochlore predominates and is enriched in Ta, Th, and U; baddeleyite is subordinate and enriched in Nb. Chemical and textural differences suggest that the phoscorites were formed by the sequential introduction of different portions of the melt. The melt that formed the FOS 1 was enriched in Zr and REE relative to the FOS 2 melt; the melt that formed the FOS 2 was enriched in Al, Ba, Nb, Ta, Th, U, and, to a lesser extent, Sr. Text Republic of Sakha Yakutia MDPI Open Access Publishing Sakha Aldan ENVELOPE(129.546,129.546,63.447,63.447) Minerals 11 6 556 |
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Open Polar |
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MDPI Open Access Publishing |
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ftmdpi |
language |
English |
topic |
phoscorites Arbarastakh alkaline-ultrabasic carbonatite complex complex mineralogy chemical evolution Aldan shield |
spellingShingle |
phoscorites Arbarastakh alkaline-ultrabasic carbonatite complex complex mineralogy chemical evolution Aldan shield Mikhail Nikolaevich Kruk Anna Gennadievna Doroshkevich Ilya Romanovich Prokopyev Ivan Aleksandrovich Izbrodin Mineralogy of Phoscorites of the Arbarastakh Complex (Republic of Sakha, Yakutia, Russia) |
topic_facet |
phoscorites Arbarastakh alkaline-ultrabasic carbonatite complex complex mineralogy chemical evolution Aldan shield |
description |
The Arbarastakh ultramafic carbonatite complex is located in the southwestern part of the Siberian Craton and contains ore-bearing carbonatites and phoscorites with Zr-Nb-REE mineralization. Based on the modal composition, textural features, and chemical compositions of minerals, the phoscorites from Arbarastakh can be subdivided into two groups: FOS 1 and FOS 2. FOS 1 contains the primary minerals olivine, magnetite with isomorphic Ti impurities, phlogopite replaced by tetraferriphlogopite along the rims, and apatite poorly enriched in REE. Baddeleyite predominates among the accessory minerals in FOS 1. Zirconolite enriched with REE and Nb and pyrochlore are found in smaller quantities. FOS 2 has a similar mineral composition but contains much less olivine, magnetite is enriched in Mg, and the phlogopite is enriched in Ba and Al. Of the accessory minerals, pyrochlore predominates and is enriched in Ta, Th, and U; baddeleyite is subordinate and enriched in Nb. Chemical and textural differences suggest that the phoscorites were formed by the sequential introduction of different portions of the melt. The melt that formed the FOS 1 was enriched in Zr and REE relative to the FOS 2 melt; the melt that formed the FOS 2 was enriched in Al, Ba, Nb, Ta, Th, U, and, to a lesser extent, Sr. |
format |
Text |
author |
Mikhail Nikolaevich Kruk Anna Gennadievna Doroshkevich Ilya Romanovich Prokopyev Ivan Aleksandrovich Izbrodin |
author_facet |
Mikhail Nikolaevich Kruk Anna Gennadievna Doroshkevich Ilya Romanovich Prokopyev Ivan Aleksandrovich Izbrodin |
author_sort |
Mikhail Nikolaevich Kruk |
title |
Mineralogy of Phoscorites of the Arbarastakh Complex (Republic of Sakha, Yakutia, Russia) |
title_short |
Mineralogy of Phoscorites of the Arbarastakh Complex (Republic of Sakha, Yakutia, Russia) |
title_full |
Mineralogy of Phoscorites of the Arbarastakh Complex (Republic of Sakha, Yakutia, Russia) |
title_fullStr |
Mineralogy of Phoscorites of the Arbarastakh Complex (Republic of Sakha, Yakutia, Russia) |
title_full_unstemmed |
Mineralogy of Phoscorites of the Arbarastakh Complex (Republic of Sakha, Yakutia, Russia) |
title_sort |
mineralogy of phoscorites of the arbarastakh complex (republic of sakha, yakutia, russia) |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/min11060556 |
op_coverage |
agris |
long_lat |
ENVELOPE(129.546,129.546,63.447,63.447) |
geographic |
Sakha Aldan |
geographic_facet |
Sakha Aldan |
genre |
Republic of Sakha Yakutia |
genre_facet |
Republic of Sakha Yakutia |
op_source |
Minerals; Volume 11; Issue 6; Pages: 556 |
op_relation |
Mineral Geochemistry and Geochronology https://dx.doi.org/10.3390/min11060556 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/min11060556 |
container_title |
Minerals |
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11 |
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6 |
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556 |
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1774722408066842624 |