Articles | Volume 38, issue 1
https://doi.org/10.5194/ejm-38-39-2026
https://doi.org/10.5194/ejm-38-39-2026
New minerals, nomenclature, and classification
 | 
15 Jan 2026
New minerals, nomenclature, and classification |  | 15 Jan 2026

Zhenruite, (MoO3)2 ⋅ H2O, and tianhuixinite, (MoO3)3 ⋅ H2O, two new minerals in the MoO3–MoO3 ⋅ 2H2O system

Xiangping Gu, Hexiong Yang, Ronald B. Gibbs, and Guanghua Liu

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Cited articles

Andersson, G. and Magnéli, A.: On the crystal structure of molybdenum trioxide, Acta Chemica Scandinavica, 4, 793–797, 1950. 
Bénard, P., Sequin, L., Louër, D., and Figlarz, M.: Structure of MoO31/2H2O by conventional X-ray powder diffraction, Journal of Solid State Chemistry, 108, 170–176, 1994. 
Boudjada, N., Rodriguez-Carvajal, J., Anne, M., and Figlarz, M.: Dehydration of MoO3.2H2O: A neutron thermodiffractometry study, Journal of Solid State Chemistry, 105, 211–222, 1993. 
Böschen, V. I. and Krebs, B.: Kristallstruktur der “weissen molybdänsäure” α-MoO3.H2O, Acta Crystallographica, B30, 1795–1800, 1974. 
Bräkken, H.: Die kristallstrukturen der trioxyde von chrom, molybdän und wolfram, Zeitschrift für Kristallographie, 78, 484–488, 1931. 
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Short summary
Two new minerals, zhenruite, ideally (MoO3)2·H2O, and tianhuixinite, ideally (MoO3)3·H2O, are described. Zhenruite is monoclinic with space group P21/m and unit-cell parameters a = 9.6790(6), b = 3.70653(19), c = 7.1029(4) Å, β = 102.391(5)°, V = 248.89(2) Å3, and Z =2. Tianhuixinite is hexagonal with space group P63/m and unit-cell parameters a = 10.5963(12), c = 3.7216(4) Å, V = 361.88(9) Å3, and Z =2. 
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