Articles | Volume 32, issue 6
Eur. J. Mineral., 32, 673–673, 2020
https://doi.org/10.5194/ejm-32-673-2020
Eur. J. Mineral., 32, 673–673, 2020
https://doi.org/10.5194/ejm-32-673-2020

Research article 17 Dec 2020

Research article | 17 Dec 2020

Corrigendum to “Natural mullites: chemical composition, crystal structure, and optical properties” published in Eur. J. Mineral., 31, 353–367, 2019

Corrigendum to “Natural mullites: chemical composition, crystal structure, and optical properties” published in Eur. J. Mineral., 31, 353–367, 2019
Stephan Lenz1, Johannes Birkenstock1, Lennart A. Fischer2, Willi Schüller3, Hartmut Schneider1, and Reinhard X. Fischer1 Stephan Lenz et al.
  • 1Fachbereich Geowissenschaften, Universität Bremen, Klagenfurter Straße 2–4, 28359 Bremen, Germany
  • 2Institut für Mineralogie, Leibniz Universität Hannover, Callinstraße 3, 30167 Hannover, Germany
  • 3Im Straussenpesch 22, 53518 Adenau, Germany

Correspondence: Stephan Lenz (slenz@uni-bremen.de)

The universal mineral formula for natural mullites presented here contains a typing error. The mineral formula, given on p. 358 (Sect. 4.1), in the heading of Table 7a (p. 361) and at the end of Sect. 4.2 (p. 363), is stated as My+Mgz2+Mw2+M4+2x+y+w-2z3+M2-2x-y-2w+z4+O10−x.

However, the indexing of M3+ is erroneous. The parameter w must contain a factor of 2. The correct formula is My+Mgz2+Mw2+M4+2x+y+2w-2z3+M2-2x-y-2w+z4+O10−x.

Consequently, also the formula NayMgzCawAl4.5+y+w-2zSi1.5-y-2w+zO9.75 given on p. 359 must be stated as NayMgzCawAl4.5+y+2w-2zSi1.5-y-2w+zO9.75.

The citation “Angel and Prewitt (1987)” on p. 357 is incorrect. It is “Angel and Prewitt (1986)”.