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. 2019 May 9;9:7151. doi: 10.1038/s41598-019-43434-w

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Rietveld refinement fit of ideally random powdered vaterite spherulites from an adult Lake Sturgeon otolith, Lake Winnebago, Wisconsin. Crosses are the experimental data, the solid line is the model fit, the vertical bars mark the reflection peak positions, and the lower curve is the difference between the model and the observed intensities. The P6₅22 space group model of Wang and Becker¹⁹ was used, and although not perfect, it is sufficient for analyzing the texture model.