Citation: Ertl, A.; Kolitsch, U.; Prowatke, S.; Dyar, M. D.; Henry, D. J. (2006). The F-analogue of schorl from Grasstein, Trentino - South Tyrol, Italy: crystal structure and chemistry Locality: pegmatite at Grasstein, Trentino-South Tyrol, Italy. European Journal of Mineralogy, 18, pp. 583-588.