Genesis of Megacrystalline Uraninite: A Case Study of the Haita Area of the Western Margin of the Yangtze Block, China

Megacrystalline uraninite (up to one centimeter in size) represents one of the most important discoveries in uranium mineralogy in the western margin of the Yangtze Block and even in China in recent years. However, the genesis of megacrystalline uraninite remains controversial. In this study, the me...

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Autores principales:	Zhengqi Xu, Minghui Yin, Youliang Chen, Lu Xiang, Hao Song, Chengjiang Zhang, Jian Yao, Hu Guo
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	megacrystalline uraninite partial melting genesis REE Mineralogy QE351-399.2
Acceso en línea:	https://doaj.org/article/b9b57933a6114469a6981d73177b4877
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spelling	oai:doaj.org-article:b9b57933a6114469a6981d73177b48772021-11-25T18:25:57ZGenesis of Megacrystalline Uraninite: A Case Study of the Haita Area of the Western Margin of the Yangtze Block, China10.3390/min111111732075-163Xhttps://doaj.org/article/b9b57933a6114469a6981d73177b48772021-10-01T00:00:00Zhttps://www.mdpi.com/2075-163X/11/11/1173https://doaj.org/toc/2075-163XMegacrystalline uraninite (up to one centimeter in size) represents one of the most important discoveries in uranium mineralogy in the western margin of the Yangtze Block and even in China in recent years. However, the genesis of megacrystalline uraninite remains controversial. In this study, the megacrystalline uraninite found in the felsic and quartz veins in the Haita area is examined for the first time. The study examined the geochemical characteristics of uraninite in the two veins and resulted in two primary findings. (1) The genesis of the uraninite was likely intrusive and was closely related to partial melting. (2) The quartz vein and feldspar vein are cogenetic and have a simple differentiation evolution relationship. Therefore, the partial melting of felsic materials during migmatization may be the most important mechanism of uranium mineralization in the study area. Furthermore, further simple fractional crystallization may be another important mechanism for the formation of megacrystalline uraninite. This study enriches the REE database of uraninite in uranium deposits worldwide, which is meaningful for studying the genesis of megacrystalline uraninite.Zhengqi XuMinghui YinYouliang ChenLu XiangHao SongChengjiang ZhangJian YaoHu GuoMDPI AGarticlemegacrystalline uraninitepartial meltinggenesisREEMineralogyQE351-399.2ENMinerals, Vol 11, Iss 1173, p 1173 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	megacrystalline uraninite partial melting genesis REE Mineralogy QE351-399.2
spellingShingle	megacrystalline uraninite partial melting genesis REE Mineralogy QE351-399.2 Zhengqi Xu Minghui Yin Youliang Chen Lu Xiang Hao Song Chengjiang Zhang Jian Yao Hu Guo Genesis of Megacrystalline Uraninite: A Case Study of the Haita Area of the Western Margin of the Yangtze Block, China
description	Megacrystalline uraninite (up to one centimeter in size) represents one of the most important discoveries in uranium mineralogy in the western margin of the Yangtze Block and even in China in recent years. However, the genesis of megacrystalline uraninite remains controversial. In this study, the megacrystalline uraninite found in the felsic and quartz veins in the Haita area is examined for the first time. The study examined the geochemical characteristics of uraninite in the two veins and resulted in two primary findings. (1) The genesis of the uraninite was likely intrusive and was closely related to partial melting. (2) The quartz vein and feldspar vein are cogenetic and have a simple differentiation evolution relationship. Therefore, the partial melting of felsic materials during migmatization may be the most important mechanism of uranium mineralization in the study area. Furthermore, further simple fractional crystallization may be another important mechanism for the formation of megacrystalline uraninite. This study enriches the REE database of uraninite in uranium deposits worldwide, which is meaningful for studying the genesis of megacrystalline uraninite.
format	article
author	Zhengqi Xu Minghui Yin Youliang Chen Lu Xiang Hao Song Chengjiang Zhang Jian Yao Hu Guo
author_facet	Zhengqi Xu Minghui Yin Youliang Chen Lu Xiang Hao Song Chengjiang Zhang Jian Yao Hu Guo
author_sort	Zhengqi Xu
title	Genesis of Megacrystalline Uraninite: A Case Study of the Haita Area of the Western Margin of the Yangtze Block, China
title_short	Genesis of Megacrystalline Uraninite: A Case Study of the Haita Area of the Western Margin of the Yangtze Block, China
title_full	Genesis of Megacrystalline Uraninite: A Case Study of the Haita Area of the Western Margin of the Yangtze Block, China
title_fullStr	Genesis of Megacrystalline Uraninite: A Case Study of the Haita Area of the Western Margin of the Yangtze Block, China
title_full_unstemmed	Genesis of Megacrystalline Uraninite: A Case Study of the Haita Area of the Western Margin of the Yangtze Block, China
title_sort	genesis of megacrystalline uraninite: a case study of the haita area of the western margin of the yangtze block, china
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b9b57933a6114469a6981d73177b4877
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Genesis of Megacrystalline Uraninite: A Case Study of the Haita Area of the Western Margin of the Yangtze Block, China

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