EMPA-SEM Study on the Rare Earth Minerals from the Huayangchuan Uranium Rare Polymetallic Deposit, Shaanxi Province

WAN Jian-jun; PAN Chun-rong; YAN Jie; KANG Qing-qing; HONG Bin-yue; ZHONG Fu-jun; HUANG Hui; DU Jing-yong; YAN Zhao-bin; PAN Jia-yong

doi:10.15898/j.cnki.11-2131/td.202005060009

2021 Vol. 40, No. 1

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WAN Jian-jun, PAN Chun-rong, YAN Jie, KANG Qing-qing, HONG Bin-yue, ZHONG Fu-jun, HUANG Hui, DU Jing-yong, YAN Zhao-bin, PAN Jia-yong. EMPA-SEM Study on the Rare Earth Minerals from the Huayangchuan Uranium Rare Polymetallic Deposit, Shaanxi Province[J]. Rock and Mineral Analysis, 2021, 40(1): 145-155. doi: 10.15898/j.cnki.11-2131/td.202005060009

Citation:

WAN Jian-jun, PAN Chun-rong, YAN Jie, KANG Qing-qing, HONG Bin-yue, ZHONG Fu-jun, HUANG Hui, DU Jing-yong, YAN Zhao-bin, PAN Jia-yong. EMPA-SEM Study on the Rare Earth Minerals from the Huayangchuan Uranium Rare Polymetallic Deposit, Shaanxi Province[J]. Rock and Mineral Analysis, 2021, 40(1): 145-155. doi: 10.15898/j.cnki.11-2131/td.202005060009

EMPA-SEM Study on the Rare Earth Minerals from the Huayangchuan Uranium Rare Polymetallic Deposit, Shaanxi Province

1.
State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
2.
Geological Party No. 224, China-Shaanxi Nuclear Industry Group, Xi'an 710024, China
3.
Fujian Institute of Geological Survey, Fuzhou 350013, China

More Information

Corresponding author: PAN Jia-yong, jypan@ecit.cn

Received Date: 06 April 2020

Revised Date: 01 August 2020

Accepted Date: 19 September 2020

Publish Date: 28 January 2021

Abstract

Abstract

BACKGROUND
The Huayangchua polymetallic deposit is a super-large mineral deposit that has economic endowments of uranium and rare earth resources. The deposit is characterized by the unique ore types and complex mineral assemblage. Systematic mineralogical studies can reveal the main rare-earth minerals and the occurrence of REE, providing an important reference for the comprehensive utilization and metallurgical technology of rare earth elements.
OBJECTIVES
To provide new insight for mineralogy using the in-situ observation and analysis technology.
METHODS
The field emission scanning electron microscope (SEM), electron microprobe analysis (EMPA) and energy dispersive X-ray spectrometer (EDS) were used to systematically study ore minerals of the Huayangchuan deposit.
RESULTS
The rare earth elements in the Huayangchuan deposit mainly occurred in two states. Independent rare-earth minerals included allanite (La₂O₃ 6.49%-7.61%, Ce₂O₃ 11.50%-14.00%), monazite (La₂O₃ 16.30%-21.21%, Ce₂O₃ 32.06%-39.18%), bastnasite (La₂O₃ 12.86%-14.20%, Ce₂O₃ 36.67%-39.90%), fergusonite (La₂O₃ 1.19%-2.11%, Ce₂O₃ 1.29%-2.30%, Y₂O₃ 22.67%-25.88%), and xenotime (La₂O₃ 2.29%-3.58%, Ce₂O₃ 1.89%-2.37%, Y₂O₃ 39.77%-42.80%). REE also occurred as isomorphism in apatite, pyrochlore and sphene.
CONCLUSIONS
REE occurs as rare-earth minerals in the Huayangchuan deposit, including allanite, monazite, bastnasite, fergusonite and xenotime, as well as isomorphism in apatite, pyrochlore and sphene. The REEs in the Huayangchuan deposit are dominated by light rare earth elements, such as La and Ce, with minor heavy rare earth element Y.
- uranium rare polymetallic deposit /
- rare-earth minerals /
- occurrence state /
- Huayangchuan of Shaanxi Province

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References

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