GARDE, A.; MARKER, M. Corundum crystals with blue-red colour zoning near Kangerdluarssuk, Sukkertoppen district, West Greenland. Rapport Grønlands Geologiske Undersøgelse, Copenhagen, Denmark, v. 140, p. 46–49, 1988. DOI: 10.34194/rapggu.v140.8032. Disponível em: https://geusjournals.org/index.php/rapggu/article/view/8032. Acesso em: 3 jul. 2024.