On the mineralogy and paragenesis of tugtupite Na8Al2Be2Si8O24(Cl,S)2 from the Ilímaussaq alkaline intrusion, South Greenland. Bulletin Grønlands Geologiske Undersøgelse, Copenhagen, Denmark, v. 95, p. 3–57, 1971. DOI: 10.34194/bullggu.v95.6635. Disponível em: https://geusjournals.org/index.php/bullggu/article/view/6635. Acesso em: 11 nov. 2025.