Textures and Chemical Compositions of Nb-Bearing Minerals and Nb Mineralization in the Shuangshan Nepheline Syenite Pluton, East Qinling, China

The Shuangshan alkaline complex located in the Henan province of China is a newly discovered, potentially giant niobium (Nb) deposit. A variety of Nb-bearing minerals including pyrochlore, zircon, and titanite have been identified in this deposit. Distinct textural and chemical differences of pyroch...

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Autores principales:	Hong Wang, Yong Tang, Yu-Sheng Xu, Hui Zhang, Zheng-Hang Lv, Shan-Xian Qin, Ying-Wei Song
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	alkaline complex Nb deposit pyrochlore zircon alteration Mineralogy QE351-399.2
Acceso en línea:	https://doaj.org/article/ae0e196954884dd281c9658777397b4f
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spelling	oai:doaj.org-article:ae0e196954884dd281c9658777397b4f2021-11-25T18:25:53ZTextures and Chemical Compositions of Nb-Bearing Minerals and Nb Mineralization in the Shuangshan Nepheline Syenite Pluton, East Qinling, China10.3390/min111111632075-163Xhttps://doaj.org/article/ae0e196954884dd281c9658777397b4f2021-10-01T00:00:00Zhttps://www.mdpi.com/2075-163X/11/11/1163https://doaj.org/toc/2075-163XThe Shuangshan alkaline complex located in the Henan province of China is a newly discovered, potentially giant niobium (Nb) deposit. A variety of Nb-bearing minerals including pyrochlore, zircon, and titanite have been identified in this deposit. Distinct textural and chemical differences of pyrochlore and zircon indicate that both have different origins. The magmatic pyrochlore and zircon both have euhedral grains with small sizes. On the other hand, hydrothermal pyrochlore is mainly intergrown on the edge or inside of hydrothermal zircon in the form of an aggregate. Compared with magmatic pyrochlore, the contents of F, Ca, and Na in hydrothermal pyrochlore are obviously high. The texture and composition of hydrothermal pyrochlore and zircon indicate that Ca-bearing hydrothermal alteration resulted in the migration of Nb from Nb-bearing zircon and the reprecipitation of Nb to form aggregate pyrochlore. However, the quantitative calculation shows that the amount of Nb migrated from zircon is very small. Therefore, this study suggests that hydrothermal alteration plays a certain role in the redistribution of Nb, but the enrichment of Nb is limited.Hong WangYong TangYu-Sheng XuHui ZhangZheng-Hang LvShan-Xian QinYing-Wei SongMDPI AGarticlealkaline complexNb depositpyrochlorezirconalterationMineralogyQE351-399.2ENMinerals, Vol 11, Iss 1163, p 1163 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	alkaline complex Nb deposit pyrochlore zircon alteration Mineralogy QE351-399.2
spellingShingle	alkaline complex Nb deposit pyrochlore zircon alteration Mineralogy QE351-399.2 Hong Wang Yong Tang Yu-Sheng Xu Hui Zhang Zheng-Hang Lv Shan-Xian Qin Ying-Wei Song Textures and Chemical Compositions of Nb-Bearing Minerals and Nb Mineralization in the Shuangshan Nepheline Syenite Pluton, East Qinling, China
description	The Shuangshan alkaline complex located in the Henan province of China is a newly discovered, potentially giant niobium (Nb) deposit. A variety of Nb-bearing minerals including pyrochlore, zircon, and titanite have been identified in this deposit. Distinct textural and chemical differences of pyrochlore and zircon indicate that both have different origins. The magmatic pyrochlore and zircon both have euhedral grains with small sizes. On the other hand, hydrothermal pyrochlore is mainly intergrown on the edge or inside of hydrothermal zircon in the form of an aggregate. Compared with magmatic pyrochlore, the contents of F, Ca, and Na in hydrothermal pyrochlore are obviously high. The texture and composition of hydrothermal pyrochlore and zircon indicate that Ca-bearing hydrothermal alteration resulted in the migration of Nb from Nb-bearing zircon and the reprecipitation of Nb to form aggregate pyrochlore. However, the quantitative calculation shows that the amount of Nb migrated from zircon is very small. Therefore, this study suggests that hydrothermal alteration plays a certain role in the redistribution of Nb, but the enrichment of Nb is limited.
format	article
author	Hong Wang Yong Tang Yu-Sheng Xu Hui Zhang Zheng-Hang Lv Shan-Xian Qin Ying-Wei Song
author_facet	Hong Wang Yong Tang Yu-Sheng Xu Hui Zhang Zheng-Hang Lv Shan-Xian Qin Ying-Wei Song
author_sort	Hong Wang
title	Textures and Chemical Compositions of Nb-Bearing Minerals and Nb Mineralization in the Shuangshan Nepheline Syenite Pluton, East Qinling, China
title_short	Textures and Chemical Compositions of Nb-Bearing Minerals and Nb Mineralization in the Shuangshan Nepheline Syenite Pluton, East Qinling, China
title_full	Textures and Chemical Compositions of Nb-Bearing Minerals and Nb Mineralization in the Shuangshan Nepheline Syenite Pluton, East Qinling, China
title_fullStr	Textures and Chemical Compositions of Nb-Bearing Minerals and Nb Mineralization in the Shuangshan Nepheline Syenite Pluton, East Qinling, China
title_full_unstemmed	Textures and Chemical Compositions of Nb-Bearing Minerals and Nb Mineralization in the Shuangshan Nepheline Syenite Pluton, East Qinling, China
title_sort	textures and chemical compositions of nb-bearing minerals and nb mineralization in the shuangshan nepheline syenite pluton, east qinling, china
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/ae0e196954884dd281c9658777397b4f
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Textures and Chemical Compositions of Nb-Bearing Minerals and Nb Mineralization in the Shuangshan Nepheline Syenite Pluton, East Qinling, China

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