Experimental quantification of the Fe-valence state at amosite-asbestos boundaries using acSTEM dual-electron energy-loss spectroscopy by R. Vigliaturo, S. Pollastri, R. Gieré, A.F. Gualtieri, and G. Dražić (December, vol. 104, p. 1820–1828, 2019) Article DOI: https://doi.org/10.2138/am-2019-7218. Erratum DOI: https://doi.org/10.2138/am-2020-E105124.

Table 3 in this article should appear as below. American Mineralogist regrets this error.

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