Articles | Volume 32, issue 6
https://doi.org/10.5194/ejm-32-673-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-32-673-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Corrigendum to “Natural mullites: chemical composition, crystal structure, and optical properties” published in Eur. J. Mineral., 31, 353–367, 2019
Stephan Lenz
CORRESPONDING AUTHOR
Fachbereich Geowissenschaften, Universität Bremen, Klagenfurter
Straße 2–4, 28359 Bremen, Germany
Johannes Birkenstock
Fachbereich Geowissenschaften, Universität Bremen, Klagenfurter
Straße 2–4, 28359 Bremen, Germany
Lennart A. Fischer
Institut für Mineralogie, Leibniz Universität Hannover,
Callinstraße 3, 30167 Hannover, Germany
Willi Schüller
Im Straussenpesch 22, 53518 Adenau, Germany
Hartmut Schneider
Fachbereich Geowissenschaften, Universität Bremen, Klagenfurter
Straße 2–4, 28359 Bremen, Germany
Reinhard X. Fischer
Fachbereich Geowissenschaften, Universität Bremen, Klagenfurter
Straße 2–4, 28359 Bremen, Germany
Related authors
Stephan Lenz, Johannes Birkenstock, Lennart A. Fischer, Hartmut Schneider, and Reinhard X. Fischer
Eur. J. Mineral., 32, 235–249, https://doi.org/10.5194/ejm-32-235-2020, https://doi.org/10.5194/ejm-32-235-2020, 2020
Short summary
Short summary
A mineral from Ettringer Bellerberg (Eifel, Germany) proved to be a polytype of the important ceramic-phase mullite termed mullite-2c, with – similar to sillimanite – doubling of the c lattice parameter due to strong (Si,Al) order in tetrahedral diclusters and – similar to mullite – presence of oxygen vacancies and tetrahedral triclusters due to Al / Si > 1 in diclusters. Crystals were characterised using single-crystal XRD, electron microprobe
analysis (EMPA) and spindle-stage optical methods.
Stephan Lenz, Johannes Birkenstock, Lennart A. Fischer, Hartmut Schneider, and Reinhard X. Fischer
Eur. J. Mineral., 32, 235–249, https://doi.org/10.5194/ejm-32-235-2020, https://doi.org/10.5194/ejm-32-235-2020, 2020
Short summary
Short summary
A mineral from Ettringer Bellerberg (Eifel, Germany) proved to be a polytype of the important ceramic-phase mullite termed mullite-2c, with – similar to sillimanite – doubling of the c lattice parameter due to strong (Si,Al) order in tetrahedral diclusters and – similar to mullite – presence of oxygen vacancies and tetrahedral triclusters due to Al / Si > 1 in diclusters. Crystals were characterised using single-crystal XRD, electron microprobe
analysis (EMPA) and spindle-stage optical methods.
Reinhard X. Fischer, Manfred Burianek, and Robert D. Shannon
Eur. J. Mineral., 32, 27–40, https://doi.org/10.5194/ejm-32-27-2020, https://doi.org/10.5194/ejm-32-27-2020, 2020
Short summary
Short summary
It is shown here that the H2O content of hydrous minerals can be determined from their mean refractive indices with high accuracy. This is especially important when only small single crystals are available. Such small crystals are generally not suitable for thermal analyses or for other reliable methods of measuring the amount of H2O. The results are compared with the observed H2O content evaluating 157 zeolite-type compounds and 770 non-zeolitic hydrous compounds, showing good agreement.