Chalcothallite - A new sulphide of copper and thallium from the Ilímaussaq alkaline intrusion, South Greenland. Bulletin Grønlands Geologiske Undersøgelse, Copenhagen, Denmark, v. 68, p. 12–37, 1967. DOI: 10.34194/bullggu.v68.6606. Disponível em: https://geusjournals.org/index.php/bullggu/article/view/6606. Acesso em: 31 oct. 2025.