Genesis of Rb mineralization of the Dongshang rare metal granite in Jiangxi Province

JIANG Junsheng; GUO Xinran; XU Jing; TIAN Liming; XIONG Guangqiang; WANG Liyuan; CHEN Suyu; HUANG Weikun

doi:10.12097/gbc.2021.12.035

2024 Vol. 43, No. 1

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Article navigation > Geological Bulletin of China > 2024 > 43(1): 86-100

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JIANG Junsheng, GUO Xinran, XU Jing, TIAN Liming, XIONG Guangqiang, WANG Liyuan, CHEN Suyu, HUANG Weikun. 2024. Genesis of Rb mineralization of the Dongshang rare metal granite in Jiangxi Province. Geological Bulletin of China, 43(1): 86-100. doi: 10.12097/gbc.2021.12.035

Citation:

JIANG Junsheng, GUO Xinran, XU Jing, TIAN Liming, XIONG Guangqiang, WANG Liyuan, CHEN Suyu, HUANG Weikun. 2024. Genesis of Rb mineralization of the Dongshang rare metal granite in Jiangxi Province. Geological Bulletin of China, 43(1): 86-100. doi: 10.12097/gbc.2021.12.035

Genesis of Rb mineralization of the Dongshang rare metal granite in Jiangxi Province

1.
Wuhan Center, China Geological Survey (Central South China Innovation Center for Geosciences), Wuhan 430205, Hubei, China
2.
Research Center for Petrogenesis and Mineralization of Granitoid Rocks, China Geological Survey, Wuhan 430205, Hubei, China
3.
The Geological Science Education Center of Guangdong, Guangzhou 510000, Guangdong, China
4.
Zijin School of Geology and Mining, Fuzhou University, Fuzhou 350108, Fujian, China
5.
Geophysical and Geochemical Exploration Brigade of Jiangxi, Nanchang 330000, Jiangxi, China
6.
Fujian Yedi Hengyuan Construction Co.Ltd., Fuzhou 350108, Fujian, China

More Information

Corresponding author: XU Jing, xujing3800@126.com

Received Date: 27 December 2021

Revised Date: 17 July 2022

Publish Date: 15 January 2024

Abstract

Abstract

The Ganfang district in the Yifeng County, Jiangxi Province is an important rare metalmetallogenic area. A series of Li-Rb rare metal deposits (mineralization) have been discovered in the Ganfang intrusions, while the mineralization mechanism of rare metals is not clear yet. The detailed mineralogy texture and composition of feldspars and micas from the Dongshang granite have been analyzed by electron microprobe analysis. The results show that micas are the main carriers of Rb (Rb₂O <1.07%), and the contents of Rb in feldspars are lower (Rb₂O <0.11%), particularly in albite. The Rb-bearing micas are mainly phengite to zinnwaldite from muscovite granite, pegmatite, and granitic aplite. The substituted mechanism of Rb in micas is mainly coupled with Na for interlayer cation of K. The mineral textures record both magma crystallization differentiation and fluid metasomatism for the Dongshang granites, however, the former was the key mechanism of the Rb enrichment, while the later has less role on the accumulation of Rb in granites. Together with previous publications, this paper concluded that the Ganfang intrusions have a good metallogenic potential of rare metals, and the subsequent prospecting should focus on the Li, Rb, and other rare metals related to the Early Cretaceous to Late Jurassic (140~150 Ma) highly differentiated granites.
- rare metals /
- granite /
- Rb /
- Dongshang granite /
- Ganfang intrusions /
- Jiangxi Province /
- mineral exploration engineering

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References

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