Publication details

Preliminary results of electron microprobe quantification of the Fe oxidation state in tourmalines

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Year of publication 2021
Type Conference abstract
MU Faculty or unit

Faculty of Science

Description Oxidation state of Fe in natural glasses, crystalline rocks and their minerals reflects the local redox conditions and the crystal-structural constrains of the minerals. It makes the determination of the oxidation state of Fe highly important in geological sciences. Up to date, the EPMA-based Fe3+/?Fe determination methods were developed for silicate glasses, garnet supergroup, amphibole supergroup, micas, spinels and olivines. For the quantitative estimation of the Fe valence in tourmaline we adopted the flank method. Further calibration and verification using other well-characterized samples is planned to obtain more reliable results. However, preliminary data show a great potential of this method to determine Fe oxidation state in a micrometre scale.
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