HELMSTAEDT, H. Possible pre-kimberlite serpentinization in ultrabasic xenoliths from Bultfontein and Jagersfontein mines, South Africa. International Kimberlite Conference: Extended Abstracts, [S. l.], v. 3, p. 210–210, 1982. DOI: 10.29173/ikc2269. Disponível em: https://journals.library.ualberta.ca/ikcabstracts.com/index.php/ikc/article/view/2269. Acesso em: 6 feb. 2025.