Articles | Volume 33, issue 4
https://doi.org/10.5194/ejm-33-357-2021
https://doi.org/10.5194/ejm-33-357-2021
Research article
 | 
02 Jul 2021
Research article |  | 02 Jul 2021

Chapmanite [Fe2Sb(Si2O5)O3(OH)]: thermodynamic properties and formation in low-temperature environments

Juraj Majzlan, Stefan Kiefer, Kristina Lilova, Tamilarasan Subramani, Alexandra Navrotsky, Edgar Dachs, and Artur Benisek

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Cited articles

Abramchuk, M., Lilova, K., Subramani, T., Yoo, R., and Navrotsky, A.: Development of high-temperature oxide melt solution calorimetry for p-block element containing materials, J. Mater. Res., 35, 2239–2246, 2020. a, b, c, d
Amador, J., Gutierrez-Puebla, E., Monge, M. A., Rasines, I., and Ruiz-Valero, C.: Diantimony tetraoxides revisited, Inorg. Chem., 27, 1367–1370, 1988. a
Aspiala, M., Sukhomlinov, D., and Taskinen, P.: Determination of standard thermodynamic properties of Sb2O3 by a solid-oxide electrolyte EMF technique, Solid State Ionics, 265, 80–84, 2014. a
Auffan, M., Rose, J., Proux, O., Borschneck, D., Masion, A., Chaurand, P., Hazemann, J.-L., Chaneac, C., Jolivet, J.-P., Wiesner, M. R., van Geen, A., and Bottero, J.-Y.: Enhanced adsorption of arsenic onto maghemites nanoparticles: As(III) as a probe of the surface structure and heterogeneity, Langmuir, 24, 3215–3222, 2008. a
Ballirano, P., Maras, A., Marchetti, F., Merlino, S., and Perchiazzi, N.: Rietveld refinement of chapmanite SbFe2Si2O8OH, a TO dioctahedral kaolinite-like mineral, Powder Diffr., 13, 44–49, 1998. a, b, c, d, e, f
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Short summary
Chapmanite is a seemingly rare mineral, a silicate of the elements iron and antimony. In this work, we evaluated how stable and how soluble this mineral is. The goal was to determine if this mineral can store the toxic element antimony. Our results show that it is possible, but its formation in nature is hindered and slow. Yet, in some special environments, it could store and keep antimony over longer time.