ZARTMAN, R.E.; RICHARDSON, S.H.; GURNEY, J.J.; MOORE, R.O. U-Th-Pb ages of megacrystic zircon from the Monastery kimberlite, Free State, South Africa. International Kimberlite Conference: Extended Abstracts, [S. l.], v. 7, n. 1, p. 989–991, 1998. DOI: 10.29173/ikc2956. Disponível em: https://ikcabstracts.com/index.php/ikc/article/view/2956. Acesso em: 18 apr. 2024.