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.
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.
the Creative Commons Attribution 4.0 License.
Xianhuaite-(Ce), K2CeNb5O15, a new niobium mineral from the Bayan Obo deposit, China
Bo Yang
Mining Research Institute of Baotou Steel (Group) Corp., Baotou 014030, China
State Key Laboratory of Lithospheric and Environmental Coevolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
China University of Geosciences, Beijing 100083, China
Li Yang
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
Ningyue Sun
China University of Geosciences, Beijing 100083, China
Guowu Li
CORRESPONDING AUTHOR
China University of Geosciences, Beijing 100083, China
Junfang Yu
Mining Research Institute of Baotou Steel (Group) Corp., Baotou 014030, China
Guoying Yan
Mining Research Institute of Baotou Steel (Group) Corp., Baotou 014030, China
Jianyong Liu
Mining Research Institute of Baotou Steel (Group) Corp., Baotou 014030, China
Yonggang Zhao
Baotou Iron and Steel (Group) Co., Ltd., Baotou 014030, China
Wenxiang Meng
Mining Research Institute of Baotou Steel (Group) Corp., Baotou 014030, China
Zhenyu Chen
Institute of Mineral resources, Chinese Academy of Geological Sciences, Beijing 100037, China
Lei Chen
China University of Geosciences, Beijing 100083, China
Ze Liu
Institute of Mineral resources, Chinese Academy of Geological Sciences, Beijing 100037, China
Zhao Yan
Mining Research Institute of Baotou Steel (Group) Corp., Baotou 014030, China
Xinyu Hou
Mining Research Institute of Baotou Steel (Group) Corp., Baotou 014030, China
Xin Ao
Mining Research Institute of Baotou Steel (Group) Corp., Baotou 014030, China
Jinlong Wang
Mining Research Institute of Baotou Steel (Group) Corp., Baotou 014030, China
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Eur. J. Mineral., 38, 519–530, https://doi.org/10.5194/ejm-38-519-2026, https://doi.org/10.5194/ejm-38-519-2026, 2026
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We studied a newly discovered silver-rich mineral from an ore deposit in central China to understand how silver is stored in nature. Using microscopy, chemical, and crystal-structure tests, we found that this mineral is a new species with a unique tellurium-rich structure. Our results show that tellurium helped trap and concentrate silver in hot mineral-forming fluids, offering new clues to how silver-rich deposits form.
Yuan Xue, Ningyue Sun, Hongping He, Aiqing Chen, and Yiping Yang
Eur. J. Mineral., 34, 95–108, https://doi.org/10.5194/ejm-34-95-2022, https://doi.org/10.5194/ejm-34-95-2022, 2022
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Liguowuite, a new member of the non-stoichiometric perovskite group minerals, ideally WO3, has been found in the Panzhihua–Xichang region, China. Liguowuite is monoclinic and is in space group P21 / n, with a = 7.32582(18) Å, b = 7.54767(18) Å, c = 7.71128(18) Å, β = 90.678(3)°, V = 426.348(19) Å3, and Z = 8. According to the hierarchical scheme for perovskite supergroup minerals, liguowuite is the first reported example of A-site vacant single oxide, i.e., a new perovskite subgroup.
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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.
Researchers studying the Bayan Obo deposit in northern China discovered an unknown mineral named...