European Journal of Mineralogy
European Journal of Mineralogy
European Journal of Mineralogy
Articles | Volume 38, issue 4
Articles | Volume 38, issue 4
https://doi.org/10.5194/ejm-38-449-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-38-449-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 38, issue 4
Research article
 | 
21 Jul 2026
Research article |  | 21 Jul 2026

Xianhuaite-(Ce), K2CeNb5O15, a new niobium mineral from the Bayan Obo deposit, China

Bo Yang, Yuan Xue, Li Yang, Ningyue Sun, Guowu Li, Junfang Yu, Guoying Yan, Jianyong Liu, Yonggang Zhao, Wenxiang Meng, Zhenyu Chen, Lei Chen, Ze Liu, Zhao Yan, Xinyu Hou, Xin Ao, and Jinlong Wang

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Short summary
Researchers studying the Bayan Obo deposit in northern China discovered an unknown mineral named xianhuaite-(Ce). The mineral contains the elements potassium, cerium, and niobium. Using microscopes, chemical analyses, and X-ray measurements, the researchers determined its structure and properties. The study shows that this mineral records the formation of rare earth and niobium ores in geological processes, improving our understanding of how these important resources formed.
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