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

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:

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

Graphical Abstract

Abstract

ABSTRACT

BACKGROUNDThe 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.OBJECTIVESTo provide new insight for mineralogy using the in-situ observation and analysis technology.METHODSThe 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.RESULTSThe 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.CONCLUSIONSREE 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.

FullText(HTML)

References (36)

Supplements (0)

Cited By

Turn off MathJax

Article Contents

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

ABSTRACT

Catalog

Export File

Citation

Format

Content