Citation: Fuchs, Y.; Ertl, A.; Hughes, J. M.; Prowatke, S.; Brandstatter, F.; Schuster, R. (2005). Dumortierite from the Gfohl unit, Lower Austria: chemistry, structure, and infra-red spectroscopy Sample: DUM1. European Journal of Mineralogy, 17, pp. 173-183.
Formula: Al6.64 B F0.021 Fe0.04 H0.81 Mg0.09 O17.979 Si2.84 Ti0.07