Articles | Volume 37, issue 4
https://doi.org/10.5194/ejm-37-577-2025
https://doi.org/10.5194/ejm-37-577-2025
Research article
 | 
25 Aug 2025
Research article |  | 25 Aug 2025

Cation disordering in ankerite as a function of Fe content

Azzurra Zucchini, Matteo Masotta, Manuela Nazzari, Maximiliano Fastelli, and Paola Comodi

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Cited articles

Angel, R. J., Mazzucchelli, M. L., Baratelli, L., Schweinle, C. F., Balic-Žunic, T., Gonzalez-Platas, J., and Alvaro, M.: Uncertainties of recalculated bond lengths, angles and polyhedral volumes as implemented in the Crystal Palace program for parametric crystal structure analysis, Acta Crystallogr. Sect. A, 81, 202–210, https://doi.org/10.1107/S2053273325002682, 2025. 
Bassett, W. A. and Skalwold, E. A.: Cation Disorder Caused by Olivine-Ringwoodite Phase Transition Mechanism, Possible Explanation for Blue Olivine Inclusion in a Diamond, Minerals, 11, 202, https://doi.org/10.3390/min11020202, 2021. 
Boffa Ballaran, T., Carpenter, M. A., Domeneghetti, M. C., and Tazzoli, V.: Structural mechanisms of solid solution and cation ordering in augite-jadeite pyroxenes: I. A macroscopic perspective, Am. Mineral., 83, 419–433, https://doi.org/10.2138/am-1998-5-602, 1998. 
Bromiley, F. A., Boffa Ballaran, T., Langenhorst, F., and Seifert, F.: Order and miscibility in the otavite–magnesite solid solution, Am. Mineral., 92, 829–836, https://doi.org/10.2138/am.2007.2315, 2007. 
Carpenter, M. A. and Salje, E. K. H.: Elastic anomalies in minerals due to structural phase transitions. Eur. J. Mineral., 10, 693–812, https://doi.org/10.1127/ejm/10/4/0693, 1998. 
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This study investigates the order–disorder phase transition in ankerite samples that vary in Fe content within their crystal structure. Results indicate that both the temperature and the character of the order–disorder phase transition are significantly influenced by the amount of Fe in the mineral's crystal structure. The obtained results might have significant implications for ankerite mineral physics under non-ambient conditions and significance in geophysical modeling of the Earth's mantle.
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