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Alumino-oxy-rossmanite Al3Al6(BO3)3(Si5AlO18)(OH)3O Crystal Data: Hexagonal. Point Group: 3m. As prismatic... (1) Hengl quarry, near Eibenstein an der Thaya, Waidhofen an der Thaya district, Lower Austria, Austria;...supergroup, X-site vacant group. Occurrence: An early magmatic Al-rich _oxy_-tourmaline indicative of high-temperature...From the Hengl quarry, near Eibenstein an der Thaya, Waidhofen an der Thaya district, Lower Austria, Austria...the Y and W sites in a tourmaline related to rossmanite which honors George R. Rossman, Professor of